Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
Benny Prijono | 32177c0 | 2008-06-20 22:44:47 +0000 | [diff] [blame] | 3 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | #include <pjsip-ua/sip_inv.h> |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 20 | #include <pjsip-ua/sip_100rel.h> |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 21 | #include <pjsip/sip_module.h> |
| 22 | #include <pjsip/sip_endpoint.h> |
| 23 | #include <pjsip/sip_event.h> |
| 24 | #include <pjsip/sip_transaction.h> |
| 25 | #include <pjmedia/sdp.h> |
| 26 | #include <pjmedia/sdp_neg.h> |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 27 | #include <pjmedia/errno.h> |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 28 | #include <pj/string.h> |
| 29 | #include <pj/pool.h> |
| 30 | #include <pj/assert.h> |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 31 | #include <pj/os.h> |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 32 | #include <pj/log.h> |
| 33 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 34 | /* |
| 35 | * Note on offer/answer: |
| 36 | * |
| 37 | * The offer/answer framework in this implementation assumes the occurence |
| 38 | * of SDP in a particular request/response according to this table: |
| 39 | |
| 40 | offer answer Note: |
| 41 | ======================================================================== |
| 42 | INVITE X INVITE may contain offer |
| 43 | 18x/INVITE X X Response may contain offer or answer |
| 44 | 2xx/INVITE X X Response may contain offer or answer |
| 45 | ACK X ACK may contain answer |
| 46 | |
| 47 | PRACK X PRACK can only contain answer |
| 48 | 2xx/PRACK Response may not have offer nor answer |
| 49 | |
| 50 | UPDATE X UPDATE may only contain offer |
| 51 | 2xx/UPDATE X Response may only contain answer |
| 52 | ======================================================================== |
| 53 | |
| 54 | * |
| 55 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 56 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 57 | #define THIS_FILE "sip_inv.c" |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 58 | |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 59 | static const char *inv_state_names[] = |
| 60 | { |
Benny Prijono | 4be63b5 | 2006-11-25 14:50:25 +0000 | [diff] [blame] | 61 | "NULL", |
| 62 | "CALLING", |
| 63 | "INCOMING", |
| 64 | "EARLY", |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 65 | "CONNECTING", |
Benny Prijono | c505570 | 2007-01-13 23:20:18 +0000 | [diff] [blame] | 66 | "CONFIRMED", |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 67 | "DISCONNCTD", |
| 68 | "TERMINATED", |
| 69 | }; |
| 70 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 71 | /* UPDATE method */ |
| 72 | const pjsip_method pjsip_update_method = |
| 73 | { |
| 74 | PJSIP_OTHER_METHOD, |
| 75 | { "UPDATE", 6 } |
| 76 | }; |
| 77 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 78 | /* |
| 79 | * Static prototypes. |
| 80 | */ |
| 81 | static pj_status_t mod_inv_load(pjsip_endpoint *endpt); |
| 82 | static pj_status_t mod_inv_unload(void); |
| 83 | static pj_bool_t mod_inv_on_rx_request(pjsip_rx_data *rdata); |
| 84 | static pj_bool_t mod_inv_on_rx_response(pjsip_rx_data *rdata); |
| 85 | static void mod_inv_on_tsx_state(pjsip_transaction*, pjsip_event*); |
| 86 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 87 | static void inv_on_state_null( pjsip_inv_session *inv, pjsip_event *e); |
| 88 | static void inv_on_state_calling( pjsip_inv_session *inv, pjsip_event *e); |
| 89 | static void inv_on_state_incoming( pjsip_inv_session *inv, pjsip_event *e); |
| 90 | static void inv_on_state_early( pjsip_inv_session *inv, pjsip_event *e); |
| 91 | static void inv_on_state_connecting( pjsip_inv_session *inv, pjsip_event *e); |
| 92 | static void inv_on_state_confirmed( pjsip_inv_session *inv, pjsip_event *e); |
| 93 | static void inv_on_state_disconnected( pjsip_inv_session *inv, pjsip_event *e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 94 | |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 95 | static pj_status_t inv_check_sdp_in_incoming_msg( pjsip_inv_session *inv, |
| 96 | pjsip_transaction *tsx, |
| 97 | pjsip_rx_data *rdata); |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 98 | static pj_status_t inv_negotiate_sdp( pjsip_inv_session *inv ); |
| 99 | static pjsip_msg_body *create_sdp_body(pj_pool_t *pool, |
| 100 | const pjmedia_sdp_session *c_sdp); |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 101 | static pj_status_t process_answer( pjsip_inv_session *inv, |
| 102 | int st_code, |
| 103 | pjsip_tx_data *tdata, |
| 104 | const pjmedia_sdp_session *local_sdp); |
| 105 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 106 | static void (*inv_state_handler[])( pjsip_inv_session *inv, pjsip_event *e) = |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 107 | { |
| 108 | &inv_on_state_null, |
| 109 | &inv_on_state_calling, |
| 110 | &inv_on_state_incoming, |
| 111 | &inv_on_state_early, |
| 112 | &inv_on_state_connecting, |
| 113 | &inv_on_state_confirmed, |
| 114 | &inv_on_state_disconnected, |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 115 | }; |
| 116 | |
| 117 | static struct mod_inv |
| 118 | { |
| 119 | pjsip_module mod; |
| 120 | pjsip_endpoint *endpt; |
| 121 | pjsip_inv_callback cb; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 122 | } mod_inv = |
| 123 | { |
| 124 | { |
Benny Prijono | 2f8992b | 2006-02-25 21:16:36 +0000 | [diff] [blame] | 125 | NULL, NULL, /* prev, next. */ |
| 126 | { "mod-invite", 10 }, /* Name. */ |
| 127 | -1, /* Id */ |
| 128 | PJSIP_MOD_PRIORITY_DIALOG_USAGE, /* Priority */ |
| 129 | &mod_inv_load, /* load() */ |
| 130 | NULL, /* start() */ |
| 131 | NULL, /* stop() */ |
| 132 | &mod_inv_unload, /* unload() */ |
| 133 | &mod_inv_on_rx_request, /* on_rx_request() */ |
| 134 | &mod_inv_on_rx_response, /* on_rx_response() */ |
| 135 | NULL, /* on_tx_request. */ |
| 136 | NULL, /* on_tx_response() */ |
| 137 | &mod_inv_on_tsx_state, /* on_tsx_state() */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 138 | } |
| 139 | }; |
| 140 | |
| 141 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 142 | /* Invite session data to be attached to transaction. */ |
| 143 | struct tsx_inv_data |
| 144 | { |
| 145 | pjsip_inv_session *inv; |
| 146 | pj_bool_t sdp_done; |
| 147 | }; |
| 148 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 149 | /* |
| 150 | * Module load() |
| 151 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 152 | static pj_status_t mod_inv_load(pjsip_endpoint *endpt) |
| 153 | { |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 154 | pj_str_t allowed[] = {{"INVITE", 6}, {"ACK",3}, {"BYE",3}, {"CANCEL",6}, |
| 155 | { "UPDATE", 6}}; |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 156 | pj_str_t accepted = { "application/sdp", 15 }; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 157 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 158 | /* Register supported methods: INVITE, ACK, BYE, CANCEL, UPDATE */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 159 | pjsip_endpt_add_capability(endpt, &mod_inv.mod, PJSIP_H_ALLOW, NULL, |
| 160 | PJ_ARRAY_SIZE(allowed), allowed); |
| 161 | |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 162 | /* Register "application/sdp" in Accept header */ |
| 163 | pjsip_endpt_add_capability(endpt, &mod_inv.mod, PJSIP_H_ACCEPT, NULL, |
| 164 | 1, &accepted); |
| 165 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 166 | return PJ_SUCCESS; |
| 167 | } |
| 168 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 169 | /* |
| 170 | * Module unload() |
| 171 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 172 | static pj_status_t mod_inv_unload(void) |
| 173 | { |
| 174 | /* Should remove capability here */ |
| 175 | return PJ_SUCCESS; |
| 176 | } |
| 177 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 178 | /* |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 179 | * Set session state. |
| 180 | */ |
| 181 | void inv_set_state(pjsip_inv_session *inv, pjsip_inv_state state, |
| 182 | pjsip_event *e) |
| 183 | { |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 184 | pjsip_inv_state prev_state = inv->state; |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 185 | pj_status_t status; |
| 186 | |
| 187 | |
| 188 | /* If state is confirmed, check that SDP negotiation is done, |
| 189 | * otherwise disconnect the session. |
| 190 | */ |
| 191 | if (state == PJSIP_INV_STATE_CONFIRMED) { |
| 192 | if (pjmedia_sdp_neg_get_state(inv->neg)!=PJMEDIA_SDP_NEG_STATE_DONE) { |
| 193 | pjsip_tx_data *bye; |
| 194 | |
| 195 | PJ_LOG(4,(inv->obj_name, "SDP offer/answer incomplete, ending the " |
| 196 | "session")); |
| 197 | |
| 198 | status = pjsip_inv_end_session(inv, PJSIP_SC_NOT_ACCEPTABLE, |
| 199 | NULL, &bye); |
| 200 | if (status == PJ_SUCCESS && bye) |
| 201 | status = pjsip_inv_send_msg(inv, bye); |
| 202 | |
| 203 | return; |
| 204 | } |
| 205 | } |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 206 | |
| 207 | /* Set state. */ |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 208 | inv->state = state; |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 209 | |
| 210 | /* If state is DISCONNECTED, cause code MUST have been set. */ |
| 211 | pj_assert(inv->state != PJSIP_INV_STATE_DISCONNECTED || |
| 212 | inv->cause != 0); |
| 213 | |
| 214 | /* Call on_state_changed() callback. */ |
| 215 | if (mod_inv.cb.on_state_changed && inv->notify) |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 216 | (*mod_inv.cb.on_state_changed)(inv, e); |
| 217 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 218 | /* Only decrement when previous state is not already DISCONNECTED */ |
| 219 | if (inv->state == PJSIP_INV_STATE_DISCONNECTED && |
| 220 | prev_state != PJSIP_INV_STATE_DISCONNECTED) |
| 221 | { |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 222 | if (inv->last_ack) { |
| 223 | pjsip_tx_data_dec_ref(inv->last_ack); |
| 224 | inv->last_ack = NULL; |
| 225 | } |
| 226 | pjsip_100rel_end_session(inv); |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 227 | pjsip_dlg_dec_session(inv->dlg, &mod_inv.mod); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 228 | } |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 229 | } |
| 230 | |
| 231 | |
| 232 | /* |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 233 | * Set cause code. |
| 234 | */ |
| 235 | void inv_set_cause(pjsip_inv_session *inv, int cause_code, |
| 236 | const pj_str_t *cause_text) |
| 237 | { |
| 238 | if (cause_code > inv->cause) { |
Benny Prijono | ba5926a | 2007-05-02 11:29:37 +0000 | [diff] [blame] | 239 | inv->cause = (pjsip_status_code) cause_code; |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 240 | if (cause_text) |
| 241 | pj_strdup(inv->pool, &inv->cause_text, cause_text); |
| 242 | else if (cause_code/100 == 2) |
| 243 | inv->cause_text = pj_str("Normal call clearing"); |
| 244 | else |
| 245 | inv->cause_text = *pjsip_get_status_text(cause_code); |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 250 | /* |
| 251 | * Check if outgoing request needs to have SDP answer. |
| 252 | * This applies for both ACK and PRACK requests. |
| 253 | */ |
Benny Prijono | 9569a0b | 2007-10-04 15:35:26 +0000 | [diff] [blame] | 254 | static const pjmedia_sdp_session *inv_has_pending_answer(pjsip_inv_session *inv, |
| 255 | pjsip_transaction *tsx) |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 256 | { |
| 257 | pjmedia_sdp_neg_state neg_state; |
Benny Prijono | 9569a0b | 2007-10-04 15:35:26 +0000 | [diff] [blame] | 258 | const pjmedia_sdp_session *sdp = NULL; |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 259 | pj_status_t status; |
| 260 | |
| 261 | /* If SDP negotiator is ready, start negotiation. */ |
| 262 | |
| 263 | /* Start nego when appropriate. */ |
| 264 | neg_state = inv->neg ? pjmedia_sdp_neg_get_state(inv->neg) : |
| 265 | PJMEDIA_SDP_NEG_STATE_NULL; |
| 266 | |
| 267 | if (neg_state == PJMEDIA_SDP_NEG_STATE_DONE) { |
| 268 | |
| 269 | /* Nothing to do */ |
| 270 | |
| 271 | } else if (neg_state == PJMEDIA_SDP_NEG_STATE_WAIT_NEGO && |
| 272 | pjmedia_sdp_neg_has_local_answer(inv->neg) ) |
| 273 | { |
| 274 | struct tsx_inv_data *tsx_inv_data; |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 275 | struct tsx_inv_data dummy; |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 276 | |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 277 | /* Get invite session's transaction data. |
| 278 | * Note that tsx may be NULL, for example when application sends |
| 279 | * delayed ACK request (at this time, the original INVITE |
| 280 | * transaction may have been destroyed. |
| 281 | */ |
| 282 | if (tsx) { |
| 283 | tsx_inv_data = (struct tsx_inv_data*)tsx->mod_data[mod_inv.mod.id]; |
| 284 | } else { |
| 285 | tsx_inv_data = &dummy; |
| 286 | pj_bzero(&dummy, sizeof(dummy)); |
| 287 | dummy.inv = inv; |
| 288 | } |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 289 | |
| 290 | status = inv_negotiate_sdp(inv); |
| 291 | if (status != PJ_SUCCESS) |
| 292 | return NULL; |
| 293 | |
| 294 | /* Mark this transaction has having SDP offer/answer done. */ |
| 295 | tsx_inv_data->sdp_done = 1; |
| 296 | |
| 297 | status = pjmedia_sdp_neg_get_active_local(inv->neg, &sdp); |
| 298 | |
| 299 | } else { |
| 300 | /* This remark is only valid for ACK. |
| 301 | PJ_LOG(4,(inv->dlg->obj_name, |
| 302 | "FYI, the SDP negotiator state (%s) is in a mess " |
| 303 | "when sending this ACK/PRACK request", |
| 304 | pjmedia_sdp_neg_state_str(neg_state))); |
| 305 | */ |
| 306 | } |
| 307 | |
| 308 | return sdp; |
| 309 | } |
| 310 | |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 311 | |
| 312 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 313 | * Send ACK for 2xx response. |
| 314 | */ |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 315 | static pj_status_t inv_send_ack(pjsip_inv_session *inv, pjsip_event *e) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 316 | { |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 317 | pjsip_rx_data *rdata; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 318 | pj_status_t status; |
| 319 | |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 320 | if (e->type == PJSIP_EVENT_TSX_STATE) |
| 321 | rdata = e->body.tsx_state.src.rdata; |
| 322 | else if (e->type == PJSIP_EVENT_RX_MSG) |
| 323 | rdata = e->body.rx_msg.rdata; |
| 324 | else { |
| 325 | pj_assert(!"Unsupported event type"); |
| 326 | return PJ_EBUG; |
| 327 | } |
| 328 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 329 | PJ_LOG(5,(inv->obj_name, "Received %s, sending ACK", |
| 330 | pjsip_rx_data_get_info(rdata))); |
| 331 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 332 | /* Check if we have cached ACK request */ |
| 333 | if (inv->last_ack && rdata->msg_info.cseq->cseq == inv->last_ack_cseq) { |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 334 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 335 | pjsip_tx_data_add_ref(inv->last_ack); |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 336 | |
| 337 | } else if (mod_inv.cb.on_send_ack) { |
| 338 | /* If application handles ACK transmission manually, just notify the |
| 339 | * callback |
| 340 | */ |
| 341 | PJ_LOG(5,(inv->obj_name, "Received %s, notifying application callback", |
| 342 | pjsip_rx_data_get_info(rdata))); |
| 343 | |
| 344 | (*mod_inv.cb.on_send_ack)(inv, rdata); |
| 345 | return PJ_SUCCESS; |
| 346 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 347 | } else { |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 348 | status = pjsip_inv_create_ack(inv, rdata->msg_info.cseq->cseq, |
| 349 | &inv->last_ack); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 350 | } |
| 351 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 352 | /* Send ACK */ |
| 353 | status = pjsip_dlg_send_request(inv->dlg, inv->last_ack, -1, NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 354 | if (status != PJ_SUCCESS) { |
| 355 | /* Better luck next time */ |
| 356 | pj_assert(!"Unable to send ACK!"); |
| 357 | return status; |
| 358 | } |
| 359 | |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 360 | |
| 361 | /* Set state to CONFIRMED (if we're not in CONFIRMED yet) */ |
| 362 | if (inv->state != PJSIP_INV_STATE_CONFIRMED) { |
| 363 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, e); |
| 364 | } |
| 365 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 366 | return PJ_SUCCESS; |
| 367 | } |
| 368 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 369 | /* |
| 370 | * Module on_rx_request() |
| 371 | * |
| 372 | * This callback is called for these events: |
| 373 | * - endpoint receives request which was unhandled by higher priority |
| 374 | * modules (e.g. transaction layer, dialog layer). |
| 375 | * - dialog distributes incoming request to its usages. |
| 376 | */ |
| 377 | static pj_bool_t mod_inv_on_rx_request(pjsip_rx_data *rdata) |
| 378 | { |
| 379 | pjsip_method *method; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 380 | pjsip_dialog *dlg; |
| 381 | pjsip_inv_session *inv; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 382 | |
| 383 | /* Only wants to receive request from a dialog. */ |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 384 | dlg = pjsip_rdata_get_dlg(rdata); |
| 385 | if (dlg == NULL) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 386 | return PJ_FALSE; |
| 387 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 388 | inv = (pjsip_inv_session*) dlg->mod_data[mod_inv.mod.id]; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 389 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 390 | /* Report to dialog that we handle INVITE, CANCEL, BYE, ACK. |
| 391 | * If we need to send response, it will be sent in the state |
| 392 | * handlers. |
| 393 | */ |
| 394 | method = &rdata->msg_info.msg->line.req.method; |
| 395 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 396 | if (method->id == PJSIP_INVITE_METHOD) { |
| 397 | return PJ_TRUE; |
| 398 | } |
| 399 | |
| 400 | /* BYE and CANCEL must have existing invite session */ |
| 401 | if (method->id == PJSIP_BYE_METHOD || |
| 402 | method->id == PJSIP_CANCEL_METHOD) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 403 | { |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 404 | if (inv == NULL) |
| 405 | return PJ_FALSE; |
| 406 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 407 | return PJ_TRUE; |
| 408 | } |
| 409 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 410 | /* On receipt ACK request, when state is CONNECTING, |
| 411 | * move state to CONFIRMED. |
| 412 | */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 413 | if (method->id == PJSIP_ACK_METHOD && inv) { |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 414 | |
Benny Prijono | f521eb0 | 2006-08-06 23:07:25 +0000 | [diff] [blame] | 415 | /* Ignore ACK if pending INVITE transaction has not finished. */ |
| 416 | if (inv->invite_tsx && |
| 417 | inv->invite_tsx->state < PJSIP_TSX_STATE_COMPLETED) |
| 418 | { |
| 419 | return PJ_TRUE; |
| 420 | } |
| 421 | |
Benny Prijono | 5eff043 | 2006-02-09 14:14:21 +0000 | [diff] [blame] | 422 | /* Terminate INVITE transaction, if it's still present. */ |
| 423 | if (inv->invite_tsx && |
| 424 | inv->invite_tsx->state <= PJSIP_TSX_STATE_COMPLETED) |
| 425 | { |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 426 | /* Before we terminate INVITE transaction, process the SDP |
| 427 | * in the ACK request, if any. |
| 428 | */ |
| 429 | inv_check_sdp_in_incoming_msg(inv, inv->invite_tsx, rdata); |
| 430 | |
| 431 | /* Now we can terminate the INVITE transaction */ |
Benny Prijono | f521eb0 | 2006-08-06 23:07:25 +0000 | [diff] [blame] | 432 | pj_assert(inv->invite_tsx->status_code >= 200); |
Benny Prijono | 5eff043 | 2006-02-09 14:14:21 +0000 | [diff] [blame] | 433 | pjsip_tsx_terminate(inv->invite_tsx, |
| 434 | inv->invite_tsx->status_code); |
| 435 | inv->invite_tsx = NULL; |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 436 | if (inv->last_answer) { |
| 437 | pjsip_tx_data_dec_ref(inv->last_answer); |
| 438 | inv->last_answer = NULL; |
| 439 | } |
Benny Prijono | 5eff043 | 2006-02-09 14:14:21 +0000 | [diff] [blame] | 440 | } |
| 441 | |
Benny Prijono | 32ac8fe | 2006-03-02 21:16:55 +0000 | [diff] [blame] | 442 | /* On receipt of ACK, only set state to confirmed when state |
| 443 | * is CONNECTING (e.g. we don't want to set the state to confirmed |
| 444 | * when we receive ACK retransmission after sending non-2xx!) |
| 445 | */ |
| 446 | if (inv->state == PJSIP_INV_STATE_CONNECTING) { |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 447 | pjsip_event event; |
| 448 | |
| 449 | PJSIP_EVENT_INIT_RX_MSG(event, rdata); |
| 450 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, &event); |
| 451 | } |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 452 | } |
| 453 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 454 | return PJ_FALSE; |
| 455 | } |
| 456 | |
| 457 | /* |
| 458 | * Module on_rx_response(). |
| 459 | * |
| 460 | * This callback is called for these events: |
| 461 | * - dialog distributes incoming 2xx response to INVITE (outside |
| 462 | * transaction) to its usages. |
| 463 | * - endpoint distributes strayed responses. |
| 464 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 465 | static pj_bool_t mod_inv_on_rx_response(pjsip_rx_data *rdata) |
| 466 | { |
| 467 | pjsip_dialog *dlg; |
| 468 | pjsip_inv_session *inv; |
| 469 | pjsip_msg *msg = rdata->msg_info.msg; |
| 470 | |
| 471 | dlg = pjsip_rdata_get_dlg(rdata); |
| 472 | |
| 473 | /* Ignore responses outside dialog */ |
| 474 | if (dlg == NULL) |
| 475 | return PJ_FALSE; |
| 476 | |
| 477 | /* Ignore responses not belonging to invite session */ |
| 478 | inv = pjsip_dlg_get_inv_session(dlg); |
| 479 | if (inv == NULL) |
| 480 | return PJ_FALSE; |
| 481 | |
| 482 | /* This MAY be retransmission of 2xx response to INVITE. |
| 483 | * If it is, we need to send ACK. |
| 484 | */ |
| 485 | if (msg->type == PJSIP_RESPONSE_MSG && msg->line.status.code/100==2 && |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 486 | rdata->msg_info.cseq->method.id == PJSIP_INVITE_METHOD && |
| 487 | inv->invite_tsx == NULL) |
| 488 | { |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 489 | pjsip_event e; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 490 | |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 491 | PJSIP_EVENT_INIT_RX_MSG(e, rdata); |
| 492 | inv_send_ack(inv, &e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 493 | return PJ_TRUE; |
| 494 | |
| 495 | } |
| 496 | |
| 497 | /* No other processing needs to be done here. */ |
| 498 | return PJ_FALSE; |
| 499 | } |
| 500 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 501 | /* |
| 502 | * Module on_tsx_state() |
| 503 | * |
| 504 | * This callback is called by dialog framework for all transactions |
| 505 | * inside the dialog for all its dialog usages. |
| 506 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 507 | static void mod_inv_on_tsx_state(pjsip_transaction *tsx, pjsip_event *e) |
| 508 | { |
| 509 | pjsip_dialog *dlg; |
| 510 | pjsip_inv_session *inv; |
| 511 | |
| 512 | dlg = pjsip_tsx_get_dlg(tsx); |
| 513 | if (dlg == NULL) |
| 514 | return; |
| 515 | |
| 516 | inv = pjsip_dlg_get_inv_session(dlg); |
| 517 | if (inv == NULL) |
| 518 | return; |
| 519 | |
| 520 | /* Call state handler for the invite session. */ |
| 521 | (*inv_state_handler[inv->state])(inv, e); |
| 522 | |
| 523 | /* Call on_tsx_state */ |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 524 | if (mod_inv.cb.on_tsx_state_changed && inv->notify) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 525 | (*mod_inv.cb.on_tsx_state_changed)(inv, tsx, e); |
| 526 | |
Benny Prijono | 4624994 | 2007-02-19 22:23:14 +0000 | [diff] [blame] | 527 | /* Clear invite transaction when tsx is confirmed. |
| 528 | * Previously we set invite_tsx to NULL only when transaction has |
| 529 | * terminated, but this didn't work when ACK has the same Via branch |
| 530 | * value as the INVITE (see http://www.pjsip.org/trac/ticket/113) |
| 531 | */ |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 532 | if (tsx->state>=PJSIP_TSX_STATE_CONFIRMED && tsx == inv->invite_tsx) { |
Benny Prijono | 4624994 | 2007-02-19 22:23:14 +0000 | [diff] [blame] | 533 | inv->invite_tsx = NULL; |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 534 | if (inv->last_answer) { |
| 535 | pjsip_tx_data_dec_ref(inv->last_answer); |
| 536 | inv->last_answer = NULL; |
| 537 | } |
| 538 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 539 | } |
| 540 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 541 | |
| 542 | /* |
| 543 | * Initialize the invite module. |
| 544 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 545 | PJ_DEF(pj_status_t) pjsip_inv_usage_init( pjsip_endpoint *endpt, |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 546 | const pjsip_inv_callback *cb) |
| 547 | { |
| 548 | pj_status_t status; |
| 549 | |
| 550 | /* Check arguments. */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 551 | PJ_ASSERT_RETURN(endpt && cb, PJ_EINVAL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 552 | |
| 553 | /* Some callbacks are mandatory */ |
| 554 | PJ_ASSERT_RETURN(cb->on_state_changed && cb->on_new_session, PJ_EINVAL); |
| 555 | |
| 556 | /* Check if module already registered. */ |
| 557 | PJ_ASSERT_RETURN(mod_inv.mod.id == -1, PJ_EINVALIDOP); |
| 558 | |
| 559 | /* Copy param. */ |
| 560 | pj_memcpy(&mod_inv.cb, cb, sizeof(pjsip_inv_callback)); |
| 561 | |
| 562 | mod_inv.endpt = endpt; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 563 | |
| 564 | /* Register the module. */ |
| 565 | status = pjsip_endpt_register_module(endpt, &mod_inv.mod); |
Benny Prijono | 053f522 | 2006-11-11 16:16:04 +0000 | [diff] [blame] | 566 | if (status != PJ_SUCCESS) |
| 567 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 568 | |
Benny Prijono | 053f522 | 2006-11-11 16:16:04 +0000 | [diff] [blame] | 569 | return PJ_SUCCESS; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 570 | } |
| 571 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 572 | /* |
| 573 | * Get the instance of invite module. |
| 574 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 575 | PJ_DEF(pjsip_module*) pjsip_inv_usage_instance(void) |
| 576 | { |
| 577 | return &mod_inv.mod; |
| 578 | } |
| 579 | |
| 580 | |
Benny Prijono | 632ce71 | 2006-02-09 14:01:40 +0000 | [diff] [blame] | 581 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 582 | /* |
| 583 | * Return the invite session for the specified dialog. |
| 584 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 585 | PJ_DEF(pjsip_inv_session*) pjsip_dlg_get_inv_session(pjsip_dialog *dlg) |
| 586 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 587 | return (pjsip_inv_session*) dlg->mod_data[mod_inv.mod.id]; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 588 | } |
| 589 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 590 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 591 | /* |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 592 | * Get INVITE state name. |
| 593 | */ |
| 594 | PJ_DEF(const char *) pjsip_inv_state_name(pjsip_inv_state state) |
| 595 | { |
| 596 | PJ_ASSERT_RETURN(state >= PJSIP_INV_STATE_NULL && |
| 597 | state <= PJSIP_INV_STATE_DISCONNECTED, |
| 598 | "??"); |
| 599 | |
| 600 | return inv_state_names[state]; |
| 601 | } |
| 602 | |
| 603 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 604 | * Create UAC invite session. |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 605 | */ |
| 606 | PJ_DEF(pj_status_t) pjsip_inv_create_uac( pjsip_dialog *dlg, |
| 607 | const pjmedia_sdp_session *local_sdp, |
| 608 | unsigned options, |
| 609 | pjsip_inv_session **p_inv) |
| 610 | { |
| 611 | pjsip_inv_session *inv; |
| 612 | pj_status_t status; |
| 613 | |
| 614 | /* Verify arguments. */ |
| 615 | PJ_ASSERT_RETURN(dlg && p_inv, PJ_EINVAL); |
| 616 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 617 | /* Must lock dialog first */ |
| 618 | pjsip_dlg_inc_lock(dlg); |
| 619 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 620 | /* Normalize options */ |
| 621 | if (options & PJSIP_INV_REQUIRE_100REL) |
| 622 | options |= PJSIP_INV_SUPPORT_100REL; |
| 623 | |
| 624 | if (options & PJSIP_INV_REQUIRE_TIMER) |
| 625 | options |= PJSIP_INV_SUPPORT_TIMER; |
| 626 | |
| 627 | /* Create the session */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 628 | inv = PJ_POOL_ZALLOC_T(dlg->pool, pjsip_inv_session); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 629 | pj_assert(inv != NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 630 | |
| 631 | inv->pool = dlg->pool; |
| 632 | inv->role = PJSIP_ROLE_UAC; |
| 633 | inv->state = PJSIP_INV_STATE_NULL; |
| 634 | inv->dlg = dlg; |
| 635 | inv->options = options; |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 636 | inv->notify = PJ_TRUE; |
Benny Prijono | ba5926a | 2007-05-02 11:29:37 +0000 | [diff] [blame] | 637 | inv->cause = (pjsip_status_code) 0; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 638 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 639 | /* Object name will use the same dialog pointer. */ |
Benny Prijono | ed811d7 | 2006-03-10 12:57:12 +0000 | [diff] [blame] | 640 | pj_ansi_snprintf(inv->obj_name, PJ_MAX_OBJ_NAME, "inv%p", dlg); |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 641 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 642 | /* Create negotiator if local_sdp is specified. */ |
| 643 | if (local_sdp) { |
| 644 | status = pjmedia_sdp_neg_create_w_local_offer(dlg->pool, local_sdp, |
| 645 | &inv->neg); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 646 | if (status != PJ_SUCCESS) { |
| 647 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 648 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 649 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 650 | } |
| 651 | |
| 652 | /* Register invite as dialog usage. */ |
| 653 | status = pjsip_dlg_add_usage(dlg, &mod_inv.mod, inv); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 654 | if (status != PJ_SUCCESS) { |
| 655 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 656 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 657 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 658 | |
| 659 | /* Increment dialog session */ |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 660 | pjsip_dlg_inc_session(dlg, &mod_inv.mod); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 661 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 662 | /* Create 100rel handler */ |
| 663 | pjsip_100rel_attach(inv); |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 664 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 665 | /* Done */ |
| 666 | *p_inv = inv; |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 667 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 668 | pjsip_dlg_dec_lock(dlg); |
| 669 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 670 | PJ_LOG(5,(inv->obj_name, "UAC invite session created for dialog %s", |
| 671 | dlg->obj_name)); |
| 672 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 673 | return PJ_SUCCESS; |
| 674 | } |
| 675 | |
| 676 | /* |
| 677 | * Verify incoming INVITE request. |
| 678 | */ |
Benny Prijono | 87a9021 | 2008-01-23 20:29:30 +0000 | [diff] [blame] | 679 | PJ_DEF(pj_status_t) pjsip_inv_verify_request2(pjsip_rx_data *rdata, |
| 680 | unsigned *options, |
| 681 | const pjmedia_sdp_session *r_sdp, |
| 682 | const pjmedia_sdp_session *l_sdp, |
| 683 | pjsip_dialog *dlg, |
| 684 | pjsip_endpoint *endpt, |
| 685 | pjsip_tx_data **p_tdata) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 686 | { |
| 687 | pjsip_msg *msg; |
| 688 | pjsip_allow_hdr *allow; |
| 689 | pjsip_supported_hdr *sup_hdr; |
| 690 | pjsip_require_hdr *req_hdr; |
| 691 | int code = 200; |
| 692 | unsigned rem_option = 0; |
| 693 | pj_status_t status = PJ_SUCCESS; |
| 694 | pjsip_hdr res_hdr_list; |
| 695 | |
| 696 | /* Init return arguments. */ |
| 697 | if (p_tdata) *p_tdata = NULL; |
| 698 | |
| 699 | /* Verify arguments. */ |
| 700 | PJ_ASSERT_RETURN(rdata != NULL && options != NULL, PJ_EINVAL); |
| 701 | |
| 702 | /* Normalize options */ |
| 703 | if (*options & PJSIP_INV_REQUIRE_100REL) |
| 704 | *options |= PJSIP_INV_SUPPORT_100REL; |
| 705 | |
| 706 | if (*options & PJSIP_INV_REQUIRE_TIMER) |
| 707 | *options |= PJSIP_INV_SUPPORT_TIMER; |
| 708 | |
| 709 | /* Get the message in rdata */ |
| 710 | msg = rdata->msg_info.msg; |
| 711 | |
| 712 | /* Must be INVITE request. */ |
| 713 | PJ_ASSERT_RETURN(msg->type == PJSIP_REQUEST_MSG && |
| 714 | msg->line.req.method.id == PJSIP_INVITE_METHOD, |
| 715 | PJ_EINVAL); |
| 716 | |
| 717 | /* If tdata is specified, then either dlg or endpt must be specified */ |
| 718 | PJ_ASSERT_RETURN((!p_tdata) || (endpt || dlg), PJ_EINVAL); |
| 719 | |
| 720 | /* Get the endpoint */ |
| 721 | endpt = endpt ? endpt : dlg->endpt; |
| 722 | |
| 723 | /* Init response header list */ |
| 724 | pj_list_init(&res_hdr_list); |
| 725 | |
Benny Prijono | 87a9021 | 2008-01-23 20:29:30 +0000 | [diff] [blame] | 726 | /* Check the request body, see if it's something that we support, |
| 727 | * only when the body hasn't been parsed before. |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 728 | */ |
Benny Prijono | 87a9021 | 2008-01-23 20:29:30 +0000 | [diff] [blame] | 729 | if (r_sdp==NULL && msg->body) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 730 | pjsip_msg_body *body = msg->body; |
| 731 | pj_str_t str_application = {"application", 11}; |
| 732 | pj_str_t str_sdp = { "sdp", 3 }; |
| 733 | pjmedia_sdp_session *sdp; |
| 734 | |
| 735 | /* Check content type. */ |
| 736 | if (pj_stricmp(&body->content_type.type, &str_application) != 0 || |
| 737 | pj_stricmp(&body->content_type.subtype, &str_sdp) != 0) |
| 738 | { |
| 739 | /* Not "application/sdp" */ |
| 740 | code = PJSIP_SC_UNSUPPORTED_MEDIA_TYPE; |
| 741 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 742 | |
| 743 | if (p_tdata) { |
| 744 | /* Add Accept header to response */ |
| 745 | pjsip_accept_hdr *acc; |
| 746 | |
| 747 | acc = pjsip_accept_hdr_create(rdata->tp_info.pool); |
| 748 | PJ_ASSERT_RETURN(acc, PJ_ENOMEM); |
| 749 | acc->values[acc->count++] = pj_str("application/sdp"); |
| 750 | pj_list_push_back(&res_hdr_list, acc); |
| 751 | } |
| 752 | |
| 753 | goto on_return; |
| 754 | } |
| 755 | |
| 756 | /* Parse and validate SDP */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 757 | status = pjmedia_sdp_parse(rdata->tp_info.pool, |
| 758 | (char*)body->data, body->len, &sdp); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 759 | if (status == PJ_SUCCESS) |
| 760 | status = pjmedia_sdp_validate(sdp); |
| 761 | |
| 762 | if (status != PJ_SUCCESS) { |
| 763 | /* Unparseable or invalid SDP */ |
| 764 | code = PJSIP_SC_BAD_REQUEST; |
| 765 | |
| 766 | if (p_tdata) { |
| 767 | /* Add Warning header. */ |
| 768 | pjsip_warning_hdr *w; |
| 769 | |
| 770 | w = pjsip_warning_hdr_create_from_status(rdata->tp_info.pool, |
| 771 | pjsip_endpt_name(endpt), |
| 772 | status); |
| 773 | PJ_ASSERT_RETURN(w, PJ_ENOMEM); |
| 774 | |
| 775 | pj_list_push_back(&res_hdr_list, w); |
| 776 | } |
| 777 | |
| 778 | goto on_return; |
| 779 | } |
| 780 | |
Benny Prijono | 87a9021 | 2008-01-23 20:29:30 +0000 | [diff] [blame] | 781 | r_sdp = sdp; |
| 782 | } |
| 783 | |
| 784 | if (r_sdp) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 785 | /* Negotiate with local SDP */ |
| 786 | if (l_sdp) { |
| 787 | pjmedia_sdp_neg *neg; |
| 788 | |
| 789 | /* Local SDP must be valid! */ |
| 790 | PJ_ASSERT_RETURN((status=pjmedia_sdp_validate(l_sdp))==PJ_SUCCESS, |
| 791 | status); |
| 792 | |
| 793 | /* Create SDP negotiator */ |
| 794 | status = pjmedia_sdp_neg_create_w_remote_offer( |
Benny Prijono | 87a9021 | 2008-01-23 20:29:30 +0000 | [diff] [blame] | 795 | rdata->tp_info.pool, l_sdp, r_sdp, &neg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 796 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, status); |
| 797 | |
| 798 | /* Negotiate SDP */ |
| 799 | status = pjmedia_sdp_neg_negotiate(rdata->tp_info.pool, neg, 0); |
| 800 | if (status != PJ_SUCCESS) { |
| 801 | |
| 802 | /* Incompatible media */ |
| 803 | code = PJSIP_SC_NOT_ACCEPTABLE_HERE; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 804 | |
| 805 | if (p_tdata) { |
| 806 | pjsip_accept_hdr *acc; |
| 807 | pjsip_warning_hdr *w; |
| 808 | |
| 809 | /* Add Warning header. */ |
| 810 | w = pjsip_warning_hdr_create_from_status( |
| 811 | rdata->tp_info.pool, |
| 812 | pjsip_endpt_name(endpt), status); |
| 813 | PJ_ASSERT_RETURN(w, PJ_ENOMEM); |
| 814 | |
| 815 | pj_list_push_back(&res_hdr_list, w); |
| 816 | |
| 817 | /* Add Accept header to response */ |
| 818 | acc = pjsip_accept_hdr_create(rdata->tp_info.pool); |
| 819 | PJ_ASSERT_RETURN(acc, PJ_ENOMEM); |
| 820 | acc->values[acc->count++] = pj_str("application/sdp"); |
| 821 | pj_list_push_back(&res_hdr_list, acc); |
| 822 | |
| 823 | } |
| 824 | |
| 825 | goto on_return; |
| 826 | } |
| 827 | } |
| 828 | } |
| 829 | |
| 830 | /* Check supported methods, see if peer supports UPDATE. |
| 831 | * We just assume that peer supports standard INVITE, ACK, CANCEL, and BYE |
| 832 | * implicitly by sending this INVITE. |
| 833 | */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 834 | allow = (pjsip_allow_hdr*) pjsip_msg_find_hdr(msg, PJSIP_H_ALLOW, NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 835 | if (allow) { |
| 836 | unsigned i; |
| 837 | const pj_str_t STR_UPDATE = { "UPDATE", 6 }; |
| 838 | |
| 839 | for (i=0; i<allow->count; ++i) { |
| 840 | if (pj_stricmp(&allow->values[i], &STR_UPDATE)==0) |
| 841 | break; |
| 842 | } |
| 843 | |
| 844 | if (i != allow->count) { |
| 845 | /* UPDATE is present in Allow */ |
| 846 | rem_option |= PJSIP_INV_SUPPORT_UPDATE; |
| 847 | } |
| 848 | |
| 849 | } |
| 850 | |
| 851 | /* Check Supported header */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 852 | sup_hdr = (pjsip_supported_hdr*) |
| 853 | pjsip_msg_find_hdr(msg, PJSIP_H_SUPPORTED, NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 854 | if (sup_hdr) { |
| 855 | unsigned i; |
| 856 | pj_str_t STR_100REL = { "100rel", 6}; |
| 857 | pj_str_t STR_TIMER = { "timer", 5 }; |
| 858 | |
| 859 | for (i=0; i<sup_hdr->count; ++i) { |
| 860 | if (pj_stricmp(&sup_hdr->values[i], &STR_100REL)==0) |
| 861 | rem_option |= PJSIP_INV_SUPPORT_100REL; |
| 862 | else if (pj_stricmp(&sup_hdr->values[i], &STR_TIMER)==0) |
| 863 | rem_option |= PJSIP_INV_SUPPORT_TIMER; |
| 864 | } |
| 865 | } |
| 866 | |
| 867 | /* Check Require header */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 868 | req_hdr = (pjsip_require_hdr*) |
| 869 | pjsip_msg_find_hdr(msg, PJSIP_H_REQUIRE, NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 870 | if (req_hdr) { |
| 871 | unsigned i; |
Benny Prijono | 053f522 | 2006-11-11 16:16:04 +0000 | [diff] [blame] | 872 | const pj_str_t STR_100REL = { "100rel", 6}; |
| 873 | const pj_str_t STR_TIMER = { "timer", 5 }; |
| 874 | const pj_str_t STR_REPLACES = { "replaces", 8 }; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 875 | unsigned unsupp_cnt = 0; |
| 876 | pj_str_t unsupp_tags[PJSIP_GENERIC_ARRAY_MAX_COUNT]; |
| 877 | |
| 878 | for (i=0; i<req_hdr->count; ++i) { |
| 879 | if ((*options & PJSIP_INV_SUPPORT_100REL) && |
| 880 | pj_stricmp(&req_hdr->values[i], &STR_100REL)==0) |
| 881 | { |
| 882 | rem_option |= PJSIP_INV_REQUIRE_100REL; |
| 883 | |
| 884 | } else if ((*options && PJSIP_INV_SUPPORT_TIMER) && |
| 885 | pj_stricmp(&req_hdr->values[i], &STR_TIMER)==0) |
| 886 | { |
| 887 | rem_option |= PJSIP_INV_REQUIRE_TIMER; |
| 888 | |
Benny Prijono | 053f522 | 2006-11-11 16:16:04 +0000 | [diff] [blame] | 889 | } else if (pj_stricmp(&req_hdr->values[i], &STR_REPLACES)==0) { |
| 890 | pj_bool_t supp; |
| 891 | |
| 892 | supp = pjsip_endpt_has_capability(endpt, PJSIP_H_SUPPORTED, |
| 893 | NULL, &STR_REPLACES); |
| 894 | if (!supp) |
| 895 | unsupp_tags[unsupp_cnt++] = req_hdr->values[i]; |
| 896 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 897 | } else { |
| 898 | /* Unknown/unsupported extension tag! */ |
| 899 | unsupp_tags[unsupp_cnt++] = req_hdr->values[i]; |
| 900 | } |
| 901 | } |
| 902 | |
| 903 | /* Check if there are required tags that we don't support */ |
| 904 | if (unsupp_cnt) { |
| 905 | |
| 906 | code = PJSIP_SC_BAD_EXTENSION; |
| 907 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 908 | |
| 909 | if (p_tdata) { |
| 910 | pjsip_unsupported_hdr *unsupp_hdr; |
| 911 | const pjsip_hdr *h; |
| 912 | |
| 913 | /* Add Unsupported header. */ |
| 914 | unsupp_hdr = pjsip_unsupported_hdr_create(rdata->tp_info.pool); |
| 915 | PJ_ASSERT_RETURN(unsupp_hdr != NULL, PJ_ENOMEM); |
| 916 | |
| 917 | unsupp_hdr->count = unsupp_cnt; |
| 918 | for (i=0; i<unsupp_cnt; ++i) |
| 919 | unsupp_hdr->values[i] = unsupp_tags[i]; |
| 920 | |
| 921 | pj_list_push_back(&res_hdr_list, unsupp_hdr); |
| 922 | |
| 923 | /* Add Supported header. */ |
| 924 | h = pjsip_endpt_get_capability(endpt, PJSIP_H_SUPPORTED, |
| 925 | NULL); |
| 926 | pj_assert(h); |
| 927 | if (h) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 928 | sup_hdr = (pjsip_supported_hdr*) |
| 929 | pjsip_hdr_clone(rdata->tp_info.pool, h); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 930 | pj_list_push_back(&res_hdr_list, sup_hdr); |
| 931 | } |
| 932 | } |
| 933 | |
| 934 | goto on_return; |
| 935 | } |
| 936 | } |
| 937 | |
| 938 | /* Check if there are local requirements that are not supported |
| 939 | * by peer. |
| 940 | */ |
| 941 | if ( ((*options & PJSIP_INV_REQUIRE_100REL)!=0 && |
| 942 | (rem_option & PJSIP_INV_SUPPORT_100REL)==0) || |
| 943 | ((*options & PJSIP_INV_REQUIRE_TIMER)!=0 && |
| 944 | (rem_option & PJSIP_INV_SUPPORT_TIMER)==0)) |
| 945 | { |
| 946 | code = PJSIP_SC_EXTENSION_REQUIRED; |
| 947 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 948 | |
| 949 | if (p_tdata) { |
| 950 | const pjsip_hdr *h; |
| 951 | |
| 952 | /* Add Require header. */ |
| 953 | req_hdr = pjsip_require_hdr_create(rdata->tp_info.pool); |
| 954 | PJ_ASSERT_RETURN(req_hdr != NULL, PJ_ENOMEM); |
| 955 | |
| 956 | if (*options & PJSIP_INV_REQUIRE_100REL) |
| 957 | req_hdr->values[req_hdr->count++] = pj_str("100rel"); |
| 958 | |
| 959 | if (*options & PJSIP_INV_REQUIRE_TIMER) |
| 960 | req_hdr->values[req_hdr->count++] = pj_str("timer"); |
| 961 | |
| 962 | pj_list_push_back(&res_hdr_list, req_hdr); |
| 963 | |
| 964 | /* Add Supported header. */ |
| 965 | h = pjsip_endpt_get_capability(endpt, PJSIP_H_SUPPORTED, |
| 966 | NULL); |
| 967 | pj_assert(h); |
| 968 | if (h) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 969 | sup_hdr = (pjsip_supported_hdr*) |
| 970 | pjsip_hdr_clone(rdata->tp_info.pool, h); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 971 | pj_list_push_back(&res_hdr_list, sup_hdr); |
| 972 | } |
| 973 | |
| 974 | } |
| 975 | |
| 976 | goto on_return; |
| 977 | } |
| 978 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 979 | /* If remote Require something that we support, make us Require |
| 980 | * that feature too. |
| 981 | */ |
| 982 | if (rem_option & PJSIP_INV_REQUIRE_100REL) { |
| 983 | pj_assert(*options & PJSIP_INV_SUPPORT_100REL); |
| 984 | *options |= PJSIP_INV_REQUIRE_100REL; |
| 985 | } |
| 986 | if (rem_option & PJSIP_INV_REQUIRE_TIMER) { |
| 987 | pj_assert(*options & PJSIP_INV_SUPPORT_TIMER); |
| 988 | *options |= PJSIP_INV_REQUIRE_TIMER; |
| 989 | } |
| 990 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 991 | on_return: |
| 992 | |
| 993 | /* Create response if necessary */ |
| 994 | if (code != 200 && p_tdata) { |
| 995 | pjsip_tx_data *tdata; |
| 996 | const pjsip_hdr *h; |
| 997 | |
| 998 | if (dlg) { |
| 999 | status = pjsip_dlg_create_response(dlg, rdata, code, NULL, |
| 1000 | &tdata); |
| 1001 | } else { |
| 1002 | status = pjsip_endpt_create_response(endpt, rdata, code, NULL, |
| 1003 | &tdata); |
| 1004 | } |
| 1005 | |
| 1006 | if (status != PJ_SUCCESS) |
| 1007 | return status; |
| 1008 | |
| 1009 | /* Add response headers. */ |
| 1010 | h = res_hdr_list.next; |
| 1011 | while (h != &res_hdr_list) { |
| 1012 | pjsip_hdr *cloned; |
| 1013 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1014 | cloned = (pjsip_hdr*) pjsip_hdr_clone(tdata->pool, h); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1015 | PJ_ASSERT_RETURN(cloned, PJ_ENOMEM); |
| 1016 | |
| 1017 | pjsip_msg_add_hdr(tdata->msg, cloned); |
| 1018 | |
| 1019 | h = h->next; |
| 1020 | } |
| 1021 | |
| 1022 | *p_tdata = tdata; |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 1023 | |
| 1024 | /* Can not return PJ_SUCCESS when response message is produced. |
| 1025 | * Ref: PROTOS test ~#2490 |
| 1026 | */ |
| 1027 | if (status == PJ_SUCCESS) |
| 1028 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 1029 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1030 | } |
| 1031 | |
| 1032 | return status; |
| 1033 | } |
| 1034 | |
Benny Prijono | 87a9021 | 2008-01-23 20:29:30 +0000 | [diff] [blame] | 1035 | |
| 1036 | /* |
| 1037 | * Verify incoming INVITE request. |
| 1038 | */ |
| 1039 | PJ_DEF(pj_status_t) pjsip_inv_verify_request( pjsip_rx_data *rdata, |
| 1040 | unsigned *options, |
| 1041 | const pjmedia_sdp_session *l_sdp, |
| 1042 | pjsip_dialog *dlg, |
| 1043 | pjsip_endpoint *endpt, |
| 1044 | pjsip_tx_data **p_tdata) |
| 1045 | { |
| 1046 | return pjsip_inv_verify_request2(rdata, options, NULL, l_sdp, dlg, |
| 1047 | endpt, p_tdata); |
| 1048 | } |
| 1049 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1050 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1051 | * Create UAS invite session. |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1052 | */ |
| 1053 | PJ_DEF(pj_status_t) pjsip_inv_create_uas( pjsip_dialog *dlg, |
| 1054 | pjsip_rx_data *rdata, |
| 1055 | const pjmedia_sdp_session *local_sdp, |
| 1056 | unsigned options, |
| 1057 | pjsip_inv_session **p_inv) |
| 1058 | { |
| 1059 | pjsip_inv_session *inv; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1060 | struct tsx_inv_data *tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1061 | pjsip_msg *msg; |
| 1062 | pjmedia_sdp_session *rem_sdp = NULL; |
| 1063 | pj_status_t status; |
| 1064 | |
| 1065 | /* Verify arguments. */ |
| 1066 | PJ_ASSERT_RETURN(dlg && rdata && p_inv, PJ_EINVAL); |
| 1067 | |
| 1068 | /* Dialog MUST have been initialised. */ |
| 1069 | PJ_ASSERT_RETURN(pjsip_rdata_get_tsx(rdata) != NULL, PJ_EINVALIDOP); |
| 1070 | |
| 1071 | msg = rdata->msg_info.msg; |
| 1072 | |
| 1073 | /* rdata MUST contain INVITE request */ |
| 1074 | PJ_ASSERT_RETURN(msg->type == PJSIP_REQUEST_MSG && |
| 1075 | msg->line.req.method.id == PJSIP_INVITE_METHOD, |
| 1076 | PJ_EINVALIDOP); |
| 1077 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1078 | /* Lock dialog */ |
| 1079 | pjsip_dlg_inc_lock(dlg); |
| 1080 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1081 | /* Normalize options */ |
| 1082 | if (options & PJSIP_INV_REQUIRE_100REL) |
| 1083 | options |= PJSIP_INV_SUPPORT_100REL; |
| 1084 | |
| 1085 | if (options & PJSIP_INV_REQUIRE_TIMER) |
| 1086 | options |= PJSIP_INV_SUPPORT_TIMER; |
| 1087 | |
| 1088 | /* Create the session */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1089 | inv = PJ_POOL_ZALLOC_T(dlg->pool, pjsip_inv_session); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1090 | pj_assert(inv != NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1091 | |
| 1092 | inv->pool = dlg->pool; |
| 1093 | inv->role = PJSIP_ROLE_UAS; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1094 | inv->state = PJSIP_INV_STATE_NULL; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1095 | inv->dlg = dlg; |
| 1096 | inv->options = options; |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1097 | inv->notify = PJ_TRUE; |
Benny Prijono | ba5926a | 2007-05-02 11:29:37 +0000 | [diff] [blame] | 1098 | inv->cause = (pjsip_status_code) 0; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1099 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1100 | /* Object name will use the same dialog pointer. */ |
Benny Prijono | ed811d7 | 2006-03-10 12:57:12 +0000 | [diff] [blame] | 1101 | pj_ansi_snprintf(inv->obj_name, PJ_MAX_OBJ_NAME, "inv%p", dlg); |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1102 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1103 | /* Parse SDP in message body, if present. */ |
| 1104 | if (msg->body) { |
| 1105 | pjsip_msg_body *body = msg->body; |
| 1106 | |
| 1107 | /* Parse and validate SDP */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1108 | status = pjmedia_sdp_parse(inv->pool, (char*)body->data, body->len, |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1109 | &rem_sdp); |
| 1110 | if (status == PJ_SUCCESS) |
| 1111 | status = pjmedia_sdp_validate(rem_sdp); |
| 1112 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1113 | if (status != PJ_SUCCESS) { |
| 1114 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1115 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1116 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1117 | } |
| 1118 | |
| 1119 | /* Create negotiator. */ |
| 1120 | if (rem_sdp) { |
| 1121 | status = pjmedia_sdp_neg_create_w_remote_offer(inv->pool, local_sdp, |
| 1122 | rem_sdp, &inv->neg); |
| 1123 | |
| 1124 | } else if (local_sdp) { |
| 1125 | status = pjmedia_sdp_neg_create_w_local_offer(inv->pool, local_sdp, |
| 1126 | &inv->neg); |
| 1127 | } else { |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1128 | status = PJ_SUCCESS; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1129 | } |
| 1130 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1131 | if (status != PJ_SUCCESS) { |
| 1132 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1133 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1134 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1135 | |
| 1136 | /* Register invite as dialog usage. */ |
| 1137 | status = pjsip_dlg_add_usage(dlg, &mod_inv.mod, inv); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1138 | if (status != PJ_SUCCESS) { |
| 1139 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1140 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1141 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1142 | |
| 1143 | /* Increment session in the dialog. */ |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1144 | pjsip_dlg_inc_session(dlg, &mod_inv.mod); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1145 | |
| 1146 | /* Save the invite transaction. */ |
| 1147 | inv->invite_tsx = pjsip_rdata_get_tsx(rdata); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1148 | |
| 1149 | /* Attach our data to the transaction. */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1150 | tsx_inv_data = PJ_POOL_ZALLOC_T(inv->invite_tsx->pool, struct tsx_inv_data); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1151 | tsx_inv_data->inv = inv; |
| 1152 | inv->invite_tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1153 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1154 | /* Create 100rel handler */ |
| 1155 | if (inv->options & PJSIP_INV_REQUIRE_100REL) { |
| 1156 | pjsip_100rel_attach(inv); |
| 1157 | } |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1158 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1159 | /* Done */ |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1160 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1161 | *p_inv = inv; |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1162 | |
| 1163 | PJ_LOG(5,(inv->obj_name, "UAS invite session created for dialog %s", |
| 1164 | dlg->obj_name)); |
| 1165 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1166 | return PJ_SUCCESS; |
| 1167 | } |
| 1168 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1169 | /* |
| 1170 | * Forcefully terminate the session. |
| 1171 | */ |
| 1172 | PJ_DEF(pj_status_t) pjsip_inv_terminate( pjsip_inv_session *inv, |
| 1173 | int st_code, |
| 1174 | pj_bool_t notify) |
| 1175 | { |
| 1176 | PJ_ASSERT_RETURN(inv, PJ_EINVAL); |
| 1177 | |
| 1178 | /* Lock dialog. */ |
| 1179 | pjsip_dlg_inc_lock(inv->dlg); |
| 1180 | |
| 1181 | /* Set callback notify flag. */ |
| 1182 | inv->notify = notify; |
| 1183 | |
| 1184 | /* If there's pending transaction, terminate the transaction. |
| 1185 | * This may subsequently set the INVITE session state to |
| 1186 | * disconnected. |
| 1187 | */ |
| 1188 | if (inv->invite_tsx && |
| 1189 | inv->invite_tsx->state <= PJSIP_TSX_STATE_COMPLETED) |
| 1190 | { |
| 1191 | pjsip_tsx_terminate(inv->invite_tsx, st_code); |
| 1192 | |
| 1193 | } |
| 1194 | |
| 1195 | /* Set cause. */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 1196 | inv_set_cause(inv, st_code, NULL); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1197 | |
| 1198 | /* Forcefully terminate the session if state is not DISCONNECTED */ |
| 1199 | if (inv->state != PJSIP_INV_STATE_DISCONNECTED) { |
| 1200 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, NULL); |
| 1201 | } |
| 1202 | |
| 1203 | /* Done. |
| 1204 | * The dec_lock() below will actually destroys the dialog if it |
| 1205 | * has no other session. |
| 1206 | */ |
| 1207 | pjsip_dlg_dec_lock(inv->dlg); |
| 1208 | |
| 1209 | return PJ_SUCCESS; |
| 1210 | } |
| 1211 | |
| 1212 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1213 | static void *clone_sdp(pj_pool_t *pool, const void *data, unsigned len) |
| 1214 | { |
| 1215 | PJ_UNUSED_ARG(len); |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1216 | return pjmedia_sdp_session_clone(pool, (const pjmedia_sdp_session*)data); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1217 | } |
| 1218 | |
| 1219 | static int print_sdp(pjsip_msg_body *body, char *buf, pj_size_t len) |
| 1220 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1221 | return pjmedia_sdp_print((const pjmedia_sdp_session*)body->data, buf, len); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1222 | } |
| 1223 | |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1224 | |
| 1225 | PJ_DEF(pj_status_t) pjsip_create_sdp_body( pj_pool_t *pool, |
| 1226 | pjmedia_sdp_session *sdp, |
| 1227 | pjsip_msg_body **p_body) |
| 1228 | { |
| 1229 | const pj_str_t STR_APPLICATION = { "application", 11}; |
| 1230 | const pj_str_t STR_SDP = { "sdp", 3 }; |
| 1231 | pjsip_msg_body *body; |
| 1232 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1233 | body = PJ_POOL_ZALLOC_T(pool, pjsip_msg_body); |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1234 | PJ_ASSERT_RETURN(body != NULL, PJ_ENOMEM); |
| 1235 | |
| 1236 | body->content_type.type = STR_APPLICATION; |
| 1237 | body->content_type.subtype = STR_SDP; |
| 1238 | body->data = sdp; |
| 1239 | body->len = 0; |
| 1240 | body->clone_data = &clone_sdp; |
| 1241 | body->print_body = &print_sdp; |
| 1242 | |
| 1243 | *p_body = body; |
| 1244 | |
| 1245 | return PJ_SUCCESS; |
| 1246 | } |
| 1247 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1248 | static pjsip_msg_body *create_sdp_body(pj_pool_t *pool, |
| 1249 | const pjmedia_sdp_session *c_sdp) |
| 1250 | { |
| 1251 | pjsip_msg_body *body; |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1252 | pj_status_t status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1253 | |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1254 | status = pjsip_create_sdp_body(pool, |
| 1255 | pjmedia_sdp_session_clone(pool, c_sdp), |
| 1256 | &body); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1257 | |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1258 | if (status != PJ_SUCCESS) |
| 1259 | return NULL; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1260 | |
| 1261 | return body; |
| 1262 | } |
| 1263 | |
| 1264 | /* |
| 1265 | * Create initial INVITE request. |
| 1266 | */ |
| 1267 | PJ_DEF(pj_status_t) pjsip_inv_invite( pjsip_inv_session *inv, |
| 1268 | pjsip_tx_data **p_tdata ) |
| 1269 | { |
| 1270 | pjsip_tx_data *tdata; |
| 1271 | const pjsip_hdr *hdr; |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1272 | pj_bool_t has_sdp; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1273 | pj_status_t status; |
| 1274 | |
| 1275 | /* Verify arguments. */ |
| 1276 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1277 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1278 | /* State MUST be NULL or CONFIRMED. */ |
| 1279 | PJ_ASSERT_RETURN(inv->state == PJSIP_INV_STATE_NULL || |
| 1280 | inv->state == PJSIP_INV_STATE_CONFIRMED, |
| 1281 | PJ_EINVALIDOP); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1282 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1283 | /* Lock dialog. */ |
| 1284 | pjsip_dlg_inc_lock(inv->dlg); |
| 1285 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1286 | /* Create the INVITE request. */ |
Benny Prijono | 1f61a8f | 2007-08-16 10:11:44 +0000 | [diff] [blame] | 1287 | status = pjsip_dlg_create_request(inv->dlg, pjsip_get_invite_method(), -1, |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1288 | &tdata); |
| 1289 | if (status != PJ_SUCCESS) |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1290 | goto on_return; |
| 1291 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1292 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1293 | /* If this is the first INVITE, then copy the headers from inv_hdr. |
| 1294 | * These are the headers parsed from the request URI when the |
| 1295 | * dialog was created. |
| 1296 | */ |
| 1297 | if (inv->state == PJSIP_INV_STATE_NULL) { |
| 1298 | hdr = inv->dlg->inv_hdr.next; |
| 1299 | |
| 1300 | while (hdr != &inv->dlg->inv_hdr) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1301 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1302 | pjsip_hdr_shallow_clone(tdata->pool, hdr)); |
| 1303 | hdr = hdr->next; |
| 1304 | } |
| 1305 | } |
| 1306 | |
| 1307 | /* See if we have SDP to send. */ |
| 1308 | if (inv->neg) { |
| 1309 | pjmedia_sdp_neg_state neg_state; |
| 1310 | |
| 1311 | neg_state = pjmedia_sdp_neg_get_state(inv->neg); |
| 1312 | |
| 1313 | has_sdp = (neg_state == PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER || |
| 1314 | (neg_state == PJMEDIA_SDP_NEG_STATE_WAIT_NEGO && |
| 1315 | pjmedia_sdp_neg_has_local_answer(inv->neg))); |
| 1316 | |
| 1317 | |
| 1318 | } else { |
| 1319 | has_sdp = PJ_FALSE; |
| 1320 | } |
| 1321 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1322 | /* Add SDP, if any. */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1323 | if (has_sdp) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1324 | const pjmedia_sdp_session *offer; |
| 1325 | |
| 1326 | status = pjmedia_sdp_neg_get_neg_local(inv->neg, &offer); |
| 1327 | if (status != PJ_SUCCESS) |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1328 | goto on_return; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1329 | |
| 1330 | tdata->msg->body = create_sdp_body(tdata->pool, offer); |
| 1331 | } |
| 1332 | |
| 1333 | /* Add Allow header. */ |
Benny Prijono | 1f61a8f | 2007-08-16 10:11:44 +0000 | [diff] [blame] | 1334 | if (inv->dlg->add_allow) { |
Benny Prijono | 95673f3 | 2007-06-26 08:23:18 +0000 | [diff] [blame] | 1335 | hdr = pjsip_endpt_get_capability(inv->dlg->endpt, PJSIP_H_ALLOW, NULL); |
| 1336 | if (hdr) { |
| 1337 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) |
| 1338 | pjsip_hdr_shallow_clone(tdata->pool, hdr)); |
| 1339 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1340 | } |
| 1341 | |
| 1342 | /* Add Supported header */ |
| 1343 | hdr = pjsip_endpt_get_capability(inv->dlg->endpt, PJSIP_H_SUPPORTED, NULL); |
| 1344 | if (hdr) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1345 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1346 | pjsip_hdr_shallow_clone(tdata->pool, hdr)); |
| 1347 | } |
| 1348 | |
| 1349 | /* Add Require header. */ |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1350 | if (inv->options & PJSIP_INV_REQUIRE_100REL) { |
| 1351 | const pj_str_t HREQ = { "Require", 7 }; |
| 1352 | const pj_str_t tag_100rel = { "100rel", 6 }; |
| 1353 | pjsip_generic_string_hdr *hreq; |
| 1354 | |
| 1355 | hreq = pjsip_generic_string_hdr_create(tdata->pool, &HREQ, |
| 1356 | &tag_100rel); |
| 1357 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) hreq); |
| 1358 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1359 | |
| 1360 | /* Done. */ |
| 1361 | *p_tdata = tdata; |
| 1362 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1363 | |
| 1364 | on_return: |
| 1365 | pjsip_dlg_dec_lock(inv->dlg); |
| 1366 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1367 | } |
| 1368 | |
| 1369 | |
| 1370 | /* |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 1371 | * Initiate SDP negotiation in the SDP negotiator. |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1372 | */ |
| 1373 | static pj_status_t inv_negotiate_sdp( pjsip_inv_session *inv ) |
| 1374 | { |
| 1375 | pj_status_t status; |
| 1376 | |
| 1377 | PJ_ASSERT_RETURN(pjmedia_sdp_neg_get_state(inv->neg) == |
| 1378 | PJMEDIA_SDP_NEG_STATE_WAIT_NEGO, |
| 1379 | PJMEDIA_SDPNEG_EINSTATE); |
| 1380 | |
| 1381 | status = pjmedia_sdp_neg_negotiate(inv->pool, inv->neg, 0); |
| 1382 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1383 | PJ_LOG(5,(inv->obj_name, "SDP negotiation done, status=%d", status)); |
| 1384 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1385 | if (mod_inv.cb.on_media_update && inv->notify) |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1386 | (*mod_inv.cb.on_media_update)(inv, status); |
| 1387 | |
| 1388 | return status; |
| 1389 | } |
| 1390 | |
| 1391 | /* |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1392 | * Check in incoming message for SDP offer/answer. |
| 1393 | */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1394 | static pj_status_t inv_check_sdp_in_incoming_msg( pjsip_inv_session *inv, |
| 1395 | pjsip_transaction *tsx, |
| 1396 | pjsip_rx_data *rdata) |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1397 | { |
| 1398 | struct tsx_inv_data *tsx_inv_data; |
| 1399 | static const pj_str_t str_application = { "application", 11 }; |
| 1400 | static const pj_str_t str_sdp = { "sdp", 3 }; |
| 1401 | pj_status_t status; |
| 1402 | pjsip_msg *msg; |
| 1403 | pjmedia_sdp_session *sdp; |
| 1404 | |
| 1405 | /* Get/attach invite session's transaction data */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1406 | tsx_inv_data = (struct tsx_inv_data*) tsx->mod_data[mod_inv.mod.id]; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1407 | if (tsx_inv_data == NULL) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1408 | tsx_inv_data = PJ_POOL_ZALLOC_T(tsx->pool, struct tsx_inv_data); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1409 | tsx_inv_data->inv = inv; |
| 1410 | tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
| 1411 | } |
| 1412 | |
| 1413 | /* MUST NOT do multiple SDP offer/answer in a single transaction. |
| 1414 | */ |
| 1415 | |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 1416 | if (tsx_inv_data->sdp_done) { |
| 1417 | if (rdata->msg_info.msg->body) { |
| 1418 | PJ_LOG(4,(inv->obj_name, "SDP negotiation done, message " |
| 1419 | "body is ignored")); |
| 1420 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1421 | return PJ_SUCCESS; |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 1422 | } |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1423 | |
| 1424 | /* Check if SDP is present in the message. */ |
| 1425 | |
| 1426 | msg = rdata->msg_info.msg; |
| 1427 | if (msg->body == NULL) { |
| 1428 | /* Message doesn't have body. */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1429 | return PJ_SUCCESS; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1430 | } |
| 1431 | |
| 1432 | if (pj_stricmp(&msg->body->content_type.type, &str_application) || |
| 1433 | pj_stricmp(&msg->body->content_type.subtype, &str_sdp)) |
| 1434 | { |
| 1435 | /* Message body is not "application/sdp" */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1436 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1437 | } |
| 1438 | |
| 1439 | /* Parse the SDP body. */ |
| 1440 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1441 | status = pjmedia_sdp_parse(rdata->tp_info.pool, |
| 1442 | (char*)msg->body->data, |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1443 | msg->body->len, &sdp); |
Benny Prijono | c1b1c0a | 2007-11-06 08:48:02 +0000 | [diff] [blame] | 1444 | if (status == PJ_SUCCESS) |
| 1445 | status = pjmedia_sdp_validate(sdp); |
| 1446 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1447 | if (status != PJ_SUCCESS) { |
| 1448 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 1449 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 1450 | PJ_LOG(4,(THIS_FILE, "Error parsing SDP in %s: %s", |
| 1451 | pjsip_rx_data_get_info(rdata), errmsg)); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1452 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1453 | } |
| 1454 | |
| 1455 | /* The SDP can be an offer or answer, depending on negotiator's state */ |
| 1456 | |
| 1457 | if (inv->neg == NULL || |
| 1458 | pjmedia_sdp_neg_get_state(inv->neg) == PJMEDIA_SDP_NEG_STATE_DONE) |
| 1459 | { |
| 1460 | |
| 1461 | /* This is an offer. */ |
| 1462 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1463 | PJ_LOG(5,(inv->obj_name, "Got SDP offer in %s", |
| 1464 | pjsip_rx_data_get_info(rdata))); |
| 1465 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1466 | if (inv->neg == NULL) { |
| 1467 | status=pjmedia_sdp_neg_create_w_remote_offer(inv->pool, NULL, |
| 1468 | sdp, &inv->neg); |
| 1469 | } else { |
| 1470 | status=pjmedia_sdp_neg_set_remote_offer(inv->pool, inv->neg, sdp); |
| 1471 | } |
| 1472 | |
| 1473 | if (status != PJ_SUCCESS) { |
| 1474 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 1475 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 1476 | PJ_LOG(4,(THIS_FILE, "Error processing SDP offer in %s: %s", |
| 1477 | pjsip_rx_data_get_info(rdata), errmsg)); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1478 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1479 | } |
| 1480 | |
| 1481 | /* Inform application about remote offer. */ |
| 1482 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1483 | if (mod_inv.cb.on_rx_offer && inv->notify) { |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1484 | |
| 1485 | (*mod_inv.cb.on_rx_offer)(inv, sdp); |
| 1486 | |
| 1487 | } |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1488 | |
| 1489 | } else if (pjmedia_sdp_neg_get_state(inv->neg) == |
| 1490 | PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) |
| 1491 | { |
| 1492 | |
| 1493 | /* This is an answer. |
| 1494 | * Process and negotiate remote answer. |
| 1495 | */ |
| 1496 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1497 | PJ_LOG(5,(inv->obj_name, "Got SDP answer in %s", |
| 1498 | pjsip_rx_data_get_info(rdata))); |
| 1499 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1500 | status = pjmedia_sdp_neg_set_remote_answer(inv->pool, inv->neg, sdp); |
| 1501 | |
| 1502 | if (status != PJ_SUCCESS) { |
| 1503 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 1504 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 1505 | PJ_LOG(4,(THIS_FILE, "Error processing SDP answer in %s: %s", |
| 1506 | pjsip_rx_data_get_info(rdata), errmsg)); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1507 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1508 | } |
| 1509 | |
| 1510 | /* Negotiate SDP */ |
| 1511 | |
| 1512 | inv_negotiate_sdp(inv); |
| 1513 | |
| 1514 | /* Mark this transaction has having SDP offer/answer done. */ |
| 1515 | |
| 1516 | tsx_inv_data->sdp_done = 1; |
| 1517 | |
| 1518 | } else { |
| 1519 | |
| 1520 | PJ_LOG(5,(THIS_FILE, "Ignored SDP in %s: negotiator state is %s", |
| 1521 | pjsip_rx_data_get_info(rdata), |
| 1522 | pjmedia_sdp_neg_state_str(pjmedia_sdp_neg_get_state(inv->neg)))); |
| 1523 | } |
| 1524 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1525 | return PJ_SUCCESS; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1526 | } |
| 1527 | |
| 1528 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1529 | /* |
| 1530 | * Process INVITE answer, for both initial and subsequent re-INVITE |
| 1531 | */ |
| 1532 | static pj_status_t process_answer( pjsip_inv_session *inv, |
| 1533 | int st_code, |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1534 | pjsip_tx_data *tdata, |
| 1535 | const pjmedia_sdp_session *local_sdp) |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1536 | { |
| 1537 | pj_status_t status; |
Benny Prijono | ab7399b | 2006-02-27 00:40:31 +0000 | [diff] [blame] | 1538 | const pjmedia_sdp_session *sdp = NULL; |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1539 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1540 | /* If local_sdp is specified, then we MUST NOT have answered the |
| 1541 | * offer before. |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1542 | */ |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1543 | if (local_sdp && (st_code/100==1 || st_code/100==2)) { |
| 1544 | |
| 1545 | if (inv->neg == NULL) { |
| 1546 | status = pjmedia_sdp_neg_create_w_local_offer(inv->pool, local_sdp, |
| 1547 | &inv->neg); |
| 1548 | } else if (pjmedia_sdp_neg_get_state(inv->neg)== |
| 1549 | PJMEDIA_SDP_NEG_STATE_REMOTE_OFFER) |
| 1550 | { |
| 1551 | status = pjmedia_sdp_neg_set_local_answer(inv->pool, inv->neg, |
| 1552 | local_sdp); |
| 1553 | } else { |
| 1554 | |
| 1555 | /* Can not specify local SDP at this state. */ |
| 1556 | pj_assert(0); |
| 1557 | status = PJMEDIA_SDPNEG_EINSTATE; |
| 1558 | } |
| 1559 | |
| 1560 | if (status != PJ_SUCCESS) |
| 1561 | return status; |
| 1562 | |
| 1563 | } |
| 1564 | |
| 1565 | |
| 1566 | /* If SDP negotiator is ready, start negotiation. */ |
| 1567 | if (st_code/100==2 || (st_code/10==18 && st_code!=180)) { |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1568 | |
| 1569 | pjmedia_sdp_neg_state neg_state; |
| 1570 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1571 | /* Start nego when appropriate. */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1572 | neg_state = inv->neg ? pjmedia_sdp_neg_get_state(inv->neg) : |
| 1573 | PJMEDIA_SDP_NEG_STATE_NULL; |
| 1574 | |
| 1575 | if (neg_state == PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) { |
| 1576 | |
| 1577 | status = pjmedia_sdp_neg_get_neg_local(inv->neg, &sdp); |
| 1578 | |
| 1579 | } else if (neg_state == PJMEDIA_SDP_NEG_STATE_WAIT_NEGO && |
| 1580 | pjmedia_sdp_neg_has_local_answer(inv->neg) ) |
| 1581 | { |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 1582 | struct tsx_inv_data *tsx_inv_data; |
| 1583 | |
| 1584 | /* Get invite session's transaction data */ |
| 1585 | tsx_inv_data = (struct tsx_inv_data*) |
| 1586 | inv->invite_tsx->mod_data[mod_inv.mod.id]; |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1587 | |
| 1588 | status = inv_negotiate_sdp(inv); |
| 1589 | if (status != PJ_SUCCESS) |
| 1590 | return status; |
| 1591 | |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 1592 | /* Mark this transaction has having SDP offer/answer done. */ |
| 1593 | tsx_inv_data->sdp_done = 1; |
| 1594 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1595 | status = pjmedia_sdp_neg_get_active_local(inv->neg, &sdp); |
| 1596 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1597 | } |
| 1598 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1599 | /* Include SDP when it's available for 2xx and 18x (but not 180) response. |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1600 | * Subsequent response will include this SDP. |
Benny Prijono | 48ab2b7 | 2007-11-08 09:24:30 +0000 | [diff] [blame] | 1601 | * |
| 1602 | * Note note: |
| 1603 | * - When offer/answer has been completed in reliable 183, we MUST NOT |
| 1604 | * send SDP in 2xx response. So if we don't have SDP to send, clear |
| 1605 | * the SDP in the message body ONLY if 100rel is active in this |
| 1606 | * session. |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1607 | */ |
| 1608 | if (sdp) { |
| 1609 | tdata->msg->body = create_sdp_body(tdata->pool, sdp); |
Benny Prijono | 48ab2b7 | 2007-11-08 09:24:30 +0000 | [diff] [blame] | 1610 | } else { |
| 1611 | if (inv->options & PJSIP_INV_REQUIRE_100REL) { |
| 1612 | tdata->msg->body = NULL; |
| 1613 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1614 | } |
| 1615 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1616 | |
| 1617 | return PJ_SUCCESS; |
| 1618 | } |
| 1619 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1620 | |
| 1621 | /* |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1622 | * Create first response to INVITE |
| 1623 | */ |
| 1624 | PJ_DEF(pj_status_t) pjsip_inv_initial_answer( pjsip_inv_session *inv, |
| 1625 | pjsip_rx_data *rdata, |
| 1626 | int st_code, |
| 1627 | const pj_str_t *st_text, |
| 1628 | const pjmedia_sdp_session *sdp, |
| 1629 | pjsip_tx_data **p_tdata) |
| 1630 | { |
| 1631 | pjsip_tx_data *tdata; |
| 1632 | pj_status_t status; |
| 1633 | |
| 1634 | /* Verify arguments. */ |
| 1635 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1636 | |
| 1637 | /* Must have INVITE transaction. */ |
| 1638 | PJ_ASSERT_RETURN(inv->invite_tsx, PJ_EBUG); |
| 1639 | |
| 1640 | pjsip_dlg_inc_lock(inv->dlg); |
| 1641 | |
| 1642 | /* Create response */ |
| 1643 | status = pjsip_dlg_create_response(inv->dlg, rdata, st_code, st_text, |
| 1644 | &tdata); |
| 1645 | if (status != PJ_SUCCESS) |
| 1646 | goto on_return; |
| 1647 | |
| 1648 | /* Process SDP in answer */ |
| 1649 | status = process_answer(inv, st_code, tdata, sdp); |
| 1650 | if (status != PJ_SUCCESS) { |
| 1651 | pjsip_tx_data_dec_ref(tdata); |
| 1652 | goto on_return; |
| 1653 | } |
| 1654 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1655 | /* Save this answer */ |
| 1656 | inv->last_answer = tdata; |
| 1657 | pjsip_tx_data_add_ref(inv->last_answer); |
| 1658 | PJ_LOG(5,(inv->dlg->obj_name, "Initial answer %s", |
| 1659 | pjsip_tx_data_get_info(inv->last_answer))); |
| 1660 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1661 | *p_tdata = tdata; |
| 1662 | |
| 1663 | on_return: |
| 1664 | pjsip_dlg_dec_lock(inv->dlg); |
| 1665 | return status; |
| 1666 | } |
| 1667 | |
| 1668 | |
| 1669 | /* |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1670 | * Answer initial INVITE |
| 1671 | * Re-INVITE will be answered automatically, and will not use this function. |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1672 | */ |
| 1673 | PJ_DEF(pj_status_t) pjsip_inv_answer( pjsip_inv_session *inv, |
| 1674 | int st_code, |
| 1675 | const pj_str_t *st_text, |
| 1676 | const pjmedia_sdp_session *local_sdp, |
| 1677 | pjsip_tx_data **p_tdata ) |
| 1678 | { |
| 1679 | pjsip_tx_data *last_res; |
| 1680 | pj_status_t status; |
| 1681 | |
| 1682 | /* Verify arguments. */ |
| 1683 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1684 | |
| 1685 | /* Must have INVITE transaction. */ |
| 1686 | PJ_ASSERT_RETURN(inv->invite_tsx, PJ_EBUG); |
| 1687 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1688 | /* Must have created an answer before */ |
| 1689 | PJ_ASSERT_RETURN(inv->last_answer, PJ_EINVALIDOP); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1690 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1691 | pjsip_dlg_inc_lock(inv->dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1692 | |
| 1693 | /* Modify last response. */ |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1694 | last_res = inv->last_answer; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1695 | status = pjsip_dlg_modify_response(inv->dlg, last_res, st_code, st_text); |
| 1696 | if (status != PJ_SUCCESS) |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1697 | goto on_return; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1698 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1699 | /* For non-2xx final response, strip message body */ |
| 1700 | if (st_code >= 300) { |
| 1701 | last_res->msg->body = NULL; |
| 1702 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1703 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1704 | /* Process SDP in answer */ |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1705 | status = process_answer(inv, st_code, last_res, local_sdp); |
| 1706 | if (status != PJ_SUCCESS) { |
| 1707 | pjsip_tx_data_dec_ref(last_res); |
| 1708 | goto on_return; |
| 1709 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1710 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1711 | |
| 1712 | *p_tdata = last_res; |
| 1713 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1714 | on_return: |
| 1715 | pjsip_dlg_dec_lock(inv->dlg); |
| 1716 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1717 | } |
| 1718 | |
| 1719 | |
| 1720 | /* |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1721 | * Set SDP answer. |
| 1722 | */ |
| 1723 | PJ_DEF(pj_status_t) pjsip_inv_set_sdp_answer( pjsip_inv_session *inv, |
| 1724 | const pjmedia_sdp_session *sdp ) |
| 1725 | { |
| 1726 | pj_status_t status; |
| 1727 | |
| 1728 | PJ_ASSERT_RETURN(inv && sdp, PJ_EINVAL); |
| 1729 | |
| 1730 | pjsip_dlg_inc_lock(inv->dlg); |
| 1731 | status = pjmedia_sdp_neg_set_local_answer( inv->pool, inv->neg, sdp); |
| 1732 | pjsip_dlg_dec_lock(inv->dlg); |
| 1733 | |
| 1734 | return status; |
| 1735 | } |
| 1736 | |
| 1737 | |
| 1738 | /* |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1739 | * End session. |
| 1740 | */ |
| 1741 | PJ_DEF(pj_status_t) pjsip_inv_end_session( pjsip_inv_session *inv, |
| 1742 | int st_code, |
| 1743 | const pj_str_t *st_text, |
| 1744 | pjsip_tx_data **p_tdata ) |
| 1745 | { |
| 1746 | pjsip_tx_data *tdata; |
| 1747 | pj_status_t status; |
| 1748 | |
| 1749 | /* Verify arguments. */ |
| 1750 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1751 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1752 | /* Set cause code. */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 1753 | inv_set_cause(inv, st_code, st_text); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1754 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1755 | /* Create appropriate message. */ |
| 1756 | switch (inv->state) { |
| 1757 | case PJSIP_INV_STATE_CALLING: |
| 1758 | case PJSIP_INV_STATE_EARLY: |
| 1759 | case PJSIP_INV_STATE_INCOMING: |
| 1760 | |
| 1761 | if (inv->role == PJSIP_ROLE_UAC) { |
| 1762 | |
| 1763 | /* For UAC when session has not been confirmed, create CANCEL. */ |
| 1764 | |
| 1765 | /* MUST have the original UAC INVITE transaction. */ |
| 1766 | PJ_ASSERT_RETURN(inv->invite_tsx != NULL, PJ_EBUG); |
| 1767 | |
| 1768 | /* But CANCEL should only be called when we have received a |
| 1769 | * provisional response. If we haven't received any responses, |
| 1770 | * just destroy the transaction. |
| 1771 | */ |
| 1772 | if (inv->invite_tsx->status_code < 100) { |
| 1773 | |
Benny Prijono | 1dc8be0 | 2007-05-30 04:26:40 +0000 | [diff] [blame] | 1774 | pjsip_tsx_stop_retransmit(inv->invite_tsx); |
| 1775 | inv->cancelling = PJ_TRUE; |
| 1776 | inv->pending_cancel = PJ_TRUE; |
Benny Prijono | fccab71 | 2006-02-22 22:23:22 +0000 | [diff] [blame] | 1777 | *p_tdata = NULL; |
Benny Prijono | 1dc8be0 | 2007-05-30 04:26:40 +0000 | [diff] [blame] | 1778 | PJ_LOG(4, (inv->obj_name, "Stopping retransmission, " |
| 1779 | "delaying CANCEL")); |
Benny Prijono | fccab71 | 2006-02-22 22:23:22 +0000 | [diff] [blame] | 1780 | return PJ_SUCCESS; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1781 | } |
| 1782 | |
| 1783 | /* The CSeq here assumes that the dialog is started with an |
| 1784 | * INVITE session. This may not be correct; dialog can be |
| 1785 | * started as SUBSCRIBE session. |
| 1786 | * So fix this! |
| 1787 | */ |
| 1788 | status = pjsip_endpt_create_cancel(inv->dlg->endpt, |
| 1789 | inv->invite_tsx->last_tx, |
| 1790 | &tdata); |
| 1791 | |
| 1792 | } else { |
| 1793 | |
| 1794 | /* For UAS, send a final response. */ |
| 1795 | tdata = inv->invite_tsx->last_tx; |
| 1796 | PJ_ASSERT_RETURN(tdata != NULL, PJ_EINVALIDOP); |
| 1797 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1798 | //status = pjsip_dlg_modify_response(inv->dlg, tdata, st_code, |
| 1799 | // st_text); |
| 1800 | status = pjsip_inv_answer(inv, st_code, st_text, NULL, &tdata); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1801 | } |
| 1802 | break; |
| 1803 | |
| 1804 | case PJSIP_INV_STATE_CONNECTING: |
| 1805 | case PJSIP_INV_STATE_CONFIRMED: |
| 1806 | /* For established dialog, send BYE */ |
Benny Prijono | 1f61a8f | 2007-08-16 10:11:44 +0000 | [diff] [blame] | 1807 | status = pjsip_dlg_create_request(inv->dlg, pjsip_get_bye_method(), |
| 1808 | -1, &tdata); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1809 | break; |
| 1810 | |
| 1811 | case PJSIP_INV_STATE_DISCONNECTED: |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1812 | /* No need to do anything. */ |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1813 | return PJSIP_ESESSIONTERMINATED; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1814 | |
| 1815 | default: |
| 1816 | pj_assert("!Invalid operation!"); |
| 1817 | return PJ_EINVALIDOP; |
| 1818 | } |
| 1819 | |
| 1820 | if (status != PJ_SUCCESS) |
| 1821 | return status; |
| 1822 | |
| 1823 | |
| 1824 | /* Done */ |
| 1825 | |
Benny Prijono | 0606e70 | 2007-05-22 12:21:40 +0000 | [diff] [blame] | 1826 | inv->cancelling = PJ_TRUE; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1827 | *p_tdata = tdata; |
| 1828 | |
| 1829 | return PJ_SUCCESS; |
| 1830 | } |
| 1831 | |
| 1832 | |
| 1833 | /* |
| 1834 | * Create re-INVITE. |
| 1835 | */ |
| 1836 | PJ_DEF(pj_status_t) pjsip_inv_reinvite( pjsip_inv_session *inv, |
| 1837 | const pj_str_t *new_contact, |
| 1838 | const pjmedia_sdp_session *new_offer, |
| 1839 | pjsip_tx_data **p_tdata ) |
| 1840 | { |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1841 | pj_status_t status; |
| 1842 | pjsip_contact_hdr *contact_hdr = NULL; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1843 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1844 | /* Check arguments. */ |
| 1845 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1846 | |
| 1847 | /* Must NOT have a pending INVITE transaction */ |
Benny Prijono | 2b78782 | 2007-06-12 15:29:52 +0000 | [diff] [blame] | 1848 | if (inv->invite_tsx!=NULL) |
| 1849 | return PJ_EINVALIDOP; |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1850 | |
| 1851 | |
| 1852 | pjsip_dlg_inc_lock(inv->dlg); |
| 1853 | |
| 1854 | if (new_contact) { |
| 1855 | pj_str_t tmp; |
| 1856 | const pj_str_t STR_CONTACT = { "Contact", 7 }; |
| 1857 | |
| 1858 | pj_strdup_with_null(inv->dlg->pool, &tmp, new_contact); |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1859 | contact_hdr = (pjsip_contact_hdr*) |
| 1860 | pjsip_parse_hdr(inv->dlg->pool, &STR_CONTACT, |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1861 | tmp.ptr, tmp.slen, NULL); |
| 1862 | if (!contact_hdr) { |
| 1863 | status = PJSIP_EINVALIDURI; |
| 1864 | goto on_return; |
| 1865 | } |
| 1866 | } |
| 1867 | |
| 1868 | |
| 1869 | if (new_offer) { |
| 1870 | if (!inv->neg) { |
| 1871 | status = pjmedia_sdp_neg_create_w_local_offer(inv->pool, new_offer, |
| 1872 | &inv->neg); |
| 1873 | if (status != PJ_SUCCESS) |
| 1874 | goto on_return; |
| 1875 | |
| 1876 | } else switch (pjmedia_sdp_neg_get_state(inv->neg)) { |
| 1877 | |
| 1878 | case PJMEDIA_SDP_NEG_STATE_NULL: |
| 1879 | pj_assert(!"Unexpected SDP neg state NULL"); |
| 1880 | status = PJ_EBUG; |
| 1881 | goto on_return; |
| 1882 | |
| 1883 | case PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER: |
| 1884 | PJ_LOG(4,(inv->obj_name, |
| 1885 | "pjsip_inv_reinvite: already have an offer, new " |
| 1886 | "offer is ignored")); |
| 1887 | break; |
| 1888 | |
| 1889 | case PJMEDIA_SDP_NEG_STATE_REMOTE_OFFER: |
| 1890 | status = pjmedia_sdp_neg_set_local_answer(inv->pool, inv->neg, |
| 1891 | new_offer); |
| 1892 | if (status != PJ_SUCCESS) |
| 1893 | goto on_return; |
| 1894 | break; |
| 1895 | |
| 1896 | case PJMEDIA_SDP_NEG_STATE_WAIT_NEGO: |
| 1897 | PJ_LOG(4,(inv->obj_name, |
| 1898 | "pjsip_inv_reinvite: SDP in WAIT_NEGO state, new " |
| 1899 | "offer is ignored")); |
| 1900 | break; |
| 1901 | |
| 1902 | case PJMEDIA_SDP_NEG_STATE_DONE: |
| 1903 | status = pjmedia_sdp_neg_modify_local_offer(inv->pool,inv->neg, |
| 1904 | new_offer); |
| 1905 | if (status != PJ_SUCCESS) |
| 1906 | goto on_return; |
| 1907 | break; |
| 1908 | } |
| 1909 | } |
| 1910 | |
| 1911 | if (contact_hdr) |
| 1912 | inv->dlg->local.contact = contact_hdr; |
| 1913 | |
| 1914 | status = pjsip_inv_invite(inv, p_tdata); |
| 1915 | |
| 1916 | on_return: |
| 1917 | pjsip_dlg_dec_lock(inv->dlg); |
| 1918 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1919 | } |
| 1920 | |
| 1921 | /* |
| 1922 | * Create UPDATE. |
| 1923 | */ |
| 1924 | PJ_DEF(pj_status_t) pjsip_inv_update ( pjsip_inv_session *inv, |
| 1925 | const pj_str_t *new_contact, |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 1926 | const pjmedia_sdp_session *offer, |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1927 | pjsip_tx_data **p_tdata ) |
| 1928 | { |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 1929 | pjsip_contact_hdr *contact_hdr = NULL; |
| 1930 | pjsip_tx_data *tdata = NULL; |
| 1931 | pjmedia_sdp_session *sdp_copy; |
| 1932 | pj_status_t status = PJ_SUCCESS; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1933 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 1934 | /* Verify arguments. */ |
| 1935 | PJ_ASSERT_RETURN(inv && p_tdata && offer, PJ_EINVAL); |
| 1936 | |
| 1937 | /* Dialog must have been established */ |
| 1938 | PJ_ASSERT_RETURN(inv->dlg->state == PJSIP_DIALOG_STATE_ESTABLISHED, |
| 1939 | PJ_EINVALIDOP); |
| 1940 | |
| 1941 | /* Invite session must not have been disconnected */ |
| 1942 | PJ_ASSERT_RETURN(inv->state < PJSIP_INV_STATE_DISCONNECTED, |
| 1943 | PJ_EINVALIDOP); |
| 1944 | |
| 1945 | /* Lock dialog. */ |
| 1946 | pjsip_dlg_inc_lock(inv->dlg); |
| 1947 | |
| 1948 | /* Process offer */ |
| 1949 | if (pjmedia_sdp_neg_get_state(inv->neg)!=PJMEDIA_SDP_NEG_STATE_DONE) { |
| 1950 | PJ_LOG(4,(inv->dlg->obj_name, |
| 1951 | "Invalid SDP offer/answer state for UPDATE")); |
| 1952 | status = PJ_EINVALIDOP; |
| 1953 | goto on_error; |
| 1954 | } |
| 1955 | |
| 1956 | status = pjmedia_sdp_neg_modify_local_offer(inv->pool,inv->neg, |
| 1957 | offer); |
| 1958 | if (status != PJ_SUCCESS) |
| 1959 | goto on_error; |
| 1960 | |
| 1961 | |
| 1962 | /* Update Contact if required */ |
| 1963 | if (new_contact) { |
| 1964 | pj_str_t tmp; |
| 1965 | const pj_str_t STR_CONTACT = { "Contact", 7 }; |
| 1966 | |
| 1967 | pj_strdup_with_null(inv->dlg->pool, &tmp, new_contact); |
| 1968 | contact_hdr = (pjsip_contact_hdr*) |
| 1969 | pjsip_parse_hdr(inv->dlg->pool, &STR_CONTACT, |
| 1970 | tmp.ptr, tmp.slen, NULL); |
| 1971 | if (!contact_hdr) { |
| 1972 | status = PJSIP_EINVALIDURI; |
| 1973 | goto on_error; |
| 1974 | } |
| 1975 | |
| 1976 | inv->dlg->local.contact = contact_hdr; |
| 1977 | } |
| 1978 | |
| 1979 | /* Create request */ |
| 1980 | status = pjsip_dlg_create_request(inv->dlg, &pjsip_update_method, |
| 1981 | -1, &tdata); |
| 1982 | if (status != PJ_SUCCESS) |
| 1983 | goto on_error; |
| 1984 | |
| 1985 | /* Attach SDP body */ |
| 1986 | sdp_copy = pjmedia_sdp_session_clone(tdata->pool, offer); |
| 1987 | pjsip_create_sdp_body(tdata->pool, sdp_copy, &tdata->msg->body); |
| 1988 | |
| 1989 | /* Unlock dialog. */ |
| 1990 | pjsip_dlg_dec_lock(inv->dlg); |
| 1991 | |
| 1992 | *p_tdata = tdata; |
| 1993 | |
| 1994 | return PJ_SUCCESS; |
| 1995 | |
| 1996 | on_error: |
| 1997 | if (tdata) |
| 1998 | pjsip_tx_data_dec_ref(tdata); |
| 1999 | |
| 2000 | /* Unlock dialog. */ |
| 2001 | pjsip_dlg_dec_lock(inv->dlg); |
| 2002 | |
| 2003 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2004 | } |
| 2005 | |
| 2006 | /* |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 2007 | * Create an ACK request. |
| 2008 | */ |
| 2009 | PJ_DEF(pj_status_t) pjsip_inv_create_ack(pjsip_inv_session *inv, |
| 2010 | int cseq, |
| 2011 | pjsip_tx_data **p_tdata) |
| 2012 | { |
| 2013 | const pjmedia_sdp_session *sdp = NULL; |
| 2014 | pj_status_t status; |
| 2015 | |
| 2016 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 2017 | |
| 2018 | /* Lock dialog. */ |
| 2019 | pjsip_dlg_inc_lock(inv->dlg); |
| 2020 | |
| 2021 | /* Destroy last_ack */ |
| 2022 | if (inv->last_ack) { |
| 2023 | pjsip_tx_data_dec_ref(inv->last_ack); |
| 2024 | inv->last_ack = NULL; |
| 2025 | } |
| 2026 | |
| 2027 | /* Create new ACK request */ |
| 2028 | status = pjsip_dlg_create_request(inv->dlg, pjsip_get_ack_method(), |
| 2029 | cseq, &inv->last_ack); |
| 2030 | if (status != PJ_SUCCESS) { |
| 2031 | pjsip_dlg_dec_lock(inv->dlg); |
| 2032 | return status; |
| 2033 | } |
| 2034 | |
| 2035 | /* See if we have pending SDP answer to send */ |
| 2036 | sdp = inv_has_pending_answer(inv, inv->invite_tsx); |
| 2037 | if (sdp) { |
| 2038 | inv->last_ack->msg->body = create_sdp_body(inv->last_ack->pool, sdp); |
| 2039 | } |
| 2040 | |
| 2041 | /* Keep this for subsequent response retransmission */ |
| 2042 | inv->last_ack_cseq = cseq; |
| 2043 | pjsip_tx_data_add_ref(inv->last_ack); |
| 2044 | |
| 2045 | /* Done */ |
| 2046 | *p_tdata = inv->last_ack; |
| 2047 | |
| 2048 | /* Unlock dialog. */ |
| 2049 | pjsip_dlg_dec_lock(inv->dlg); |
| 2050 | |
| 2051 | return PJ_SUCCESS; |
| 2052 | } |
| 2053 | |
| 2054 | /* |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2055 | * Send a request or response message. |
| 2056 | */ |
| 2057 | PJ_DEF(pj_status_t) pjsip_inv_send_msg( pjsip_inv_session *inv, |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 2058 | pjsip_tx_data *tdata) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2059 | { |
| 2060 | pj_status_t status; |
| 2061 | |
| 2062 | /* Verify arguments. */ |
| 2063 | PJ_ASSERT_RETURN(inv && tdata, PJ_EINVAL); |
| 2064 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2065 | PJ_LOG(5,(inv->obj_name, "Sending %s", |
| 2066 | pjsip_tx_data_get_info(tdata))); |
| 2067 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2068 | if (tdata->msg->type == PJSIP_REQUEST_MSG) { |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2069 | struct tsx_inv_data *tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2070 | |
Benny Prijono | 64158af | 2006-04-04 11:06:34 +0000 | [diff] [blame] | 2071 | pjsip_dlg_inc_lock(inv->dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2072 | |
Benny Prijono | 22e48c9 | 2008-03-20 14:40:50 +0000 | [diff] [blame] | 2073 | /* Check again that we didn't receive incoming re-INVITE */ |
Benny Prijono | 9ae5dfc | 2008-03-27 17:30:51 +0000 | [diff] [blame] | 2074 | if (tdata->msg->line.req.method.id==PJSIP_INVITE_METHOD && |
| 2075 | inv->invite_tsx) |
| 2076 | { |
Benny Prijono | 22e48c9 | 2008-03-20 14:40:50 +0000 | [diff] [blame] | 2077 | pjsip_tx_data_dec_ref(tdata); |
| 2078 | pjsip_dlg_dec_lock(inv->dlg); |
| 2079 | return PJ_EINVALIDOP; |
| 2080 | } |
| 2081 | |
| 2082 | /* Associate our data in outgoing invite transaction */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 2083 | tsx_inv_data = PJ_POOL_ZALLOC_T(inv->pool, struct tsx_inv_data); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2084 | tsx_inv_data->inv = inv; |
| 2085 | |
Benny Prijono | 64158af | 2006-04-04 11:06:34 +0000 | [diff] [blame] | 2086 | pjsip_dlg_dec_lock(inv->dlg); |
| 2087 | |
| 2088 | status = pjsip_dlg_send_request(inv->dlg, tdata, mod_inv.mod.id, |
| 2089 | tsx_inv_data); |
| 2090 | if (status != PJ_SUCCESS) |
| 2091 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2092 | |
| 2093 | } else { |
| 2094 | pjsip_cseq_hdr *cseq; |
| 2095 | |
| 2096 | /* Can only do this to send response to original INVITE |
| 2097 | * request. |
| 2098 | */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 2099 | PJ_ASSERT_RETURN((cseq=(pjsip_cseq_hdr*)pjsip_msg_find_hdr(tdata->msg, PJSIP_H_CSEQ, NULL))!=NULL |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2100 | && (cseq->cseq == inv->invite_tsx->cseq), |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2101 | PJ_EINVALIDOP); |
| 2102 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 2103 | if (inv->options & PJSIP_INV_REQUIRE_100REL) { |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2104 | status = pjsip_100rel_tx_response(inv, tdata); |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 2105 | } else |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 2106 | { |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2107 | status = pjsip_dlg_send_response(inv->dlg, inv->invite_tsx, tdata); |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 2108 | } |
| 2109 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2110 | if (status != PJ_SUCCESS) |
| 2111 | return status; |
| 2112 | } |
| 2113 | |
| 2114 | /* Done (?) */ |
| 2115 | return PJ_SUCCESS; |
| 2116 | } |
| 2117 | |
| 2118 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2119 | /* |
| 2120 | * Respond to incoming CANCEL request. |
| 2121 | */ |
| 2122 | static void inv_respond_incoming_cancel(pjsip_inv_session *inv, |
| 2123 | pjsip_transaction *cancel_tsx, |
| 2124 | pjsip_rx_data *rdata) |
| 2125 | { |
| 2126 | pjsip_tx_data *tdata; |
| 2127 | pjsip_transaction *invite_tsx; |
| 2128 | pj_str_t key; |
| 2129 | pj_status_t status; |
| 2130 | |
| 2131 | /* See if we have matching INVITE server transaction: */ |
| 2132 | |
| 2133 | pjsip_tsx_create_key(rdata->tp_info.pool, &key, PJSIP_ROLE_UAS, |
Benny Prijono | 1f61a8f | 2007-08-16 10:11:44 +0000 | [diff] [blame] | 2134 | pjsip_get_invite_method(), rdata); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2135 | invite_tsx = pjsip_tsx_layer_find_tsx(&key, PJ_TRUE); |
| 2136 | |
| 2137 | if (invite_tsx == NULL) { |
| 2138 | |
| 2139 | /* Invite transaction not found! |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2140 | * Respond CANCEL with 481 (RFC 3261 Section 9.2 page 55) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2141 | */ |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2142 | status = pjsip_dlg_create_response( inv->dlg, rdata, 481, NULL, |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2143 | &tdata); |
| 2144 | |
| 2145 | } else { |
| 2146 | /* Always answer CANCEL will 200 (OK) regardless of |
| 2147 | * the state of the INVITE transaction. |
| 2148 | */ |
| 2149 | status = pjsip_dlg_create_response( inv->dlg, rdata, 200, NULL, |
| 2150 | &tdata); |
| 2151 | } |
| 2152 | |
| 2153 | /* See if we have created the response successfully. */ |
| 2154 | if (status != PJ_SUCCESS) return; |
| 2155 | |
| 2156 | /* Send the CANCEL response */ |
| 2157 | status = pjsip_dlg_send_response(inv->dlg, cancel_tsx, tdata); |
| 2158 | if (status != PJ_SUCCESS) return; |
| 2159 | |
| 2160 | |
| 2161 | /* See if we need to terminate the UAS INVITE transaction |
| 2162 | * with 487 (Request Terminated) response. |
| 2163 | */ |
| 2164 | if (invite_tsx && invite_tsx->status_code < 200) { |
| 2165 | |
| 2166 | pj_assert(invite_tsx->last_tx != NULL); |
| 2167 | |
| 2168 | tdata = invite_tsx->last_tx; |
| 2169 | |
| 2170 | status = pjsip_dlg_modify_response(inv->dlg, tdata, 487, NULL); |
Benny Prijono | fc8bb14 | 2007-11-08 09:56:50 +0000 | [diff] [blame] | 2171 | if (status == PJ_SUCCESS) { |
| 2172 | /* Remove the message body */ |
| 2173 | tdata->msg->body = NULL; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2174 | pjsip_dlg_send_response(inv->dlg, invite_tsx, tdata); |
Benny Prijono | fc8bb14 | 2007-11-08 09:56:50 +0000 | [diff] [blame] | 2175 | } |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2176 | } |
| 2177 | |
| 2178 | if (invite_tsx) |
| 2179 | pj_mutex_unlock(invite_tsx->mutex); |
| 2180 | } |
| 2181 | |
| 2182 | |
| 2183 | /* |
| 2184 | * Respond to incoming BYE request. |
| 2185 | */ |
| 2186 | static void inv_respond_incoming_bye( pjsip_inv_session *inv, |
| 2187 | pjsip_transaction *bye_tsx, |
| 2188 | pjsip_rx_data *rdata, |
| 2189 | pjsip_event *e ) |
| 2190 | { |
| 2191 | pj_status_t status; |
| 2192 | pjsip_tx_data *tdata; |
| 2193 | |
| 2194 | /* Respond BYE with 200: */ |
| 2195 | |
| 2196 | status = pjsip_dlg_create_response(inv->dlg, rdata, 200, NULL, &tdata); |
| 2197 | if (status != PJ_SUCCESS) return; |
| 2198 | |
| 2199 | status = pjsip_dlg_send_response(inv->dlg, bye_tsx, tdata); |
| 2200 | if (status != PJ_SUCCESS) return; |
| 2201 | |
| 2202 | /* Terminate session: */ |
| 2203 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2204 | if (inv->state != PJSIP_INV_STATE_DISCONNECTED) { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2205 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2206 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2207 | } |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2208 | } |
| 2209 | |
| 2210 | /* |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2211 | * Respond to BYE request. |
| 2212 | */ |
| 2213 | static void inv_handle_bye_response( pjsip_inv_session *inv, |
| 2214 | pjsip_transaction *tsx, |
| 2215 | pjsip_rx_data *rdata, |
| 2216 | pjsip_event *e ) |
| 2217 | { |
| 2218 | pj_status_t status; |
| 2219 | |
| 2220 | if (e->body.tsx_state.type != PJSIP_EVENT_RX_MSG) { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2221 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2222 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2223 | return; |
| 2224 | } |
| 2225 | |
| 2226 | /* Handle 401/407 challenge. */ |
| 2227 | if (tsx->status_code == 401 || tsx->status_code == 407) { |
| 2228 | |
| 2229 | pjsip_tx_data *tdata; |
| 2230 | |
| 2231 | status = pjsip_auth_clt_reinit_req( &inv->dlg->auth_sess, |
| 2232 | rdata, |
| 2233 | tsx->last_tx, |
| 2234 | &tdata); |
| 2235 | |
| 2236 | if (status != PJ_SUCCESS) { |
| 2237 | |
| 2238 | /* Does not have proper credentials. |
| 2239 | * End the session anyway. |
| 2240 | */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2241 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2242 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2243 | |
| 2244 | } else { |
| 2245 | /* Re-send BYE. */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 2246 | status = pjsip_inv_send_msg(inv, tdata); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2247 | } |
| 2248 | |
| 2249 | } else { |
| 2250 | |
| 2251 | /* End the session. */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2252 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2253 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2254 | } |
| 2255 | |
| 2256 | } |
| 2257 | |
| 2258 | /* |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2259 | * Respond to incoming UPDATE request. |
| 2260 | */ |
| 2261 | static void inv_respond_incoming_update(pjsip_inv_session *inv, |
| 2262 | pjsip_rx_data *rdata) |
| 2263 | { |
| 2264 | pjmedia_sdp_neg_state neg_state; |
| 2265 | pj_status_t status; |
| 2266 | pjsip_tx_data *tdata = NULL; |
| 2267 | |
| 2268 | neg_state = pjmedia_sdp_neg_get_state(inv->neg); |
| 2269 | |
| 2270 | /* Send 491 if we receive UPDATE while we're waiting for an answer */ |
| 2271 | if (neg_state == PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) { |
| 2272 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 2273 | PJSIP_SC_REQUEST_PENDING, NULL, |
| 2274 | &tdata); |
| 2275 | } |
| 2276 | /* Send 500 with Retry-After header set randomly between 0 and 10 if we |
| 2277 | * receive UPDATE while we haven't sent answer. |
| 2278 | */ |
| 2279 | else if (neg_state == PJMEDIA_SDP_NEG_STATE_REMOTE_OFFER || |
| 2280 | neg_state == PJMEDIA_SDP_NEG_STATE_WAIT_NEGO) { |
| 2281 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 2282 | PJSIP_SC_INTERNAL_SERVER_ERROR, |
| 2283 | NULL, &tdata); |
| 2284 | |
Benny Prijono | c5cbc05 | 2007-11-08 09:44:08 +0000 | [diff] [blame] | 2285 | /* If UPDATE doesn't contain SDP, just respond with 200/OK. |
| 2286 | * This is a valid scenario according to session-timer draft. |
| 2287 | */ |
| 2288 | } else if (rdata->msg_info.msg->body == NULL) { |
| 2289 | |
| 2290 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 2291 | 200, NULL, &tdata); |
| 2292 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2293 | } else { |
| 2294 | /* We receive new offer from remote */ |
| 2295 | inv_check_sdp_in_incoming_msg(inv, pjsip_rdata_get_tsx(rdata), rdata); |
| 2296 | |
| 2297 | /* Application MUST have supplied the answer by now. |
| 2298 | * If so, negotiate the SDP. |
| 2299 | */ |
| 2300 | neg_state = pjmedia_sdp_neg_get_state(inv->neg); |
| 2301 | if (neg_state != PJMEDIA_SDP_NEG_STATE_WAIT_NEGO || |
| 2302 | (status=inv_negotiate_sdp(inv)) != PJ_SUCCESS) |
| 2303 | { |
| 2304 | /* Negotiation has failed */ |
| 2305 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 2306 | PJSIP_SC_NOT_ACCEPTABLE_HERE, |
| 2307 | NULL, &tdata); |
| 2308 | } else { |
| 2309 | /* New media has been negotiated successfully, send 200/OK */ |
| 2310 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 2311 | PJSIP_SC_OK, NULL, &tdata); |
| 2312 | if (status == PJ_SUCCESS) { |
Benny Prijono | 9569a0b | 2007-10-04 15:35:26 +0000 | [diff] [blame] | 2313 | const pjmedia_sdp_session *sdp; |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2314 | status = pjmedia_sdp_neg_get_active_local(inv->neg, &sdp); |
| 2315 | if (status == PJ_SUCCESS) |
| 2316 | tdata->msg->body = create_sdp_body(tdata->pool, sdp); |
| 2317 | } |
| 2318 | } |
| 2319 | } |
| 2320 | |
| 2321 | if (status != PJ_SUCCESS) { |
| 2322 | if (tdata != NULL) { |
| 2323 | pjsip_tx_data_dec_ref(tdata); |
| 2324 | tdata = NULL; |
| 2325 | } |
| 2326 | return; |
| 2327 | } |
| 2328 | |
| 2329 | pjsip_dlg_send_response(inv->dlg, pjsip_rdata_get_tsx(rdata), tdata); |
| 2330 | } |
| 2331 | |
| 2332 | |
| 2333 | /* |
| 2334 | * Handle incoming response to UAC UPDATE request. |
| 2335 | */ |
| 2336 | static void inv_handle_update_response( pjsip_inv_session *inv, |
| 2337 | pjsip_event *e) |
| 2338 | { |
| 2339 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2340 | struct tsx_inv_data *tsx_inv_data = NULL; |
| 2341 | pj_status_t status = -1; |
| 2342 | |
Benny Prijono | 48ab2b7 | 2007-11-08 09:24:30 +0000 | [diff] [blame] | 2343 | /* Handle 401/407 challenge. */ |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2344 | if (tsx->state == PJSIP_TSX_STATE_COMPLETED && |
Benny Prijono | 48ab2b7 | 2007-11-08 09:24:30 +0000 | [diff] [blame] | 2345 | (tsx->status_code == 401 || tsx->status_code == 407)) { |
| 2346 | |
| 2347 | pjsip_tx_data *tdata; |
| 2348 | |
| 2349 | status = pjsip_auth_clt_reinit_req( &inv->dlg->auth_sess, |
| 2350 | e->body.tsx_state.src.rdata, |
| 2351 | tsx->last_tx, |
| 2352 | &tdata); |
| 2353 | |
| 2354 | if (status != PJ_SUCCESS) { |
| 2355 | |
| 2356 | /* Does not have proper credentials. |
| 2357 | * End the session anyway. |
| 2358 | */ |
| 2359 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
| 2360 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2361 | |
| 2362 | } else { |
Benny Prijono | 0b4c57b | 2008-06-25 10:15:01 +0000 | [diff] [blame] | 2363 | /* Re-send request. */ |
Benny Prijono | 48ab2b7 | 2007-11-08 09:24:30 +0000 | [diff] [blame] | 2364 | status = pjsip_inv_send_msg(inv, tdata); |
| 2365 | } |
| 2366 | |
| 2367 | /* Process 2xx response */ |
| 2368 | } else if (tsx->state == PJSIP_TSX_STATE_COMPLETED && |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2369 | tsx->status_code/100 == 2 && |
| 2370 | e->body.tsx_state.src.rdata->msg_info.msg->body) |
| 2371 | { |
| 2372 | status = inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2373 | e->body.tsx_state.src.rdata); |
| 2374 | |
| 2375 | } else { |
| 2376 | /* Get/attach invite session's transaction data */ |
| 2377 | tsx_inv_data = (struct tsx_inv_data*)tsx->mod_data[mod_inv.mod.id]; |
| 2378 | if (tsx_inv_data == NULL) { |
| 2379 | tsx_inv_data=PJ_POOL_ZALLOC_T(tsx->pool, struct tsx_inv_data); |
| 2380 | tsx_inv_data->inv = inv; |
| 2381 | tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
| 2382 | } |
| 2383 | } |
| 2384 | |
| 2385 | /* Otherwise if we don't get successful response, cancel |
| 2386 | * our negotiator. |
| 2387 | */ |
| 2388 | if (status != PJ_SUCCESS && |
| 2389 | pjmedia_sdp_neg_get_state(inv->neg)==PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER && |
| 2390 | tsx_inv_data && tsx_inv_data->sdp_done == PJ_FALSE) |
| 2391 | { |
| 2392 | pjmedia_sdp_neg_cancel_offer(inv->neg); |
| 2393 | |
| 2394 | /* Prevent from us cancelling different offer! */ |
| 2395 | tsx_inv_data->sdp_done = PJ_TRUE; |
| 2396 | } |
| 2397 | } |
| 2398 | |
| 2399 | |
| 2400 | /* |
| 2401 | * Handle incoming reliable response. |
| 2402 | */ |
| 2403 | static void inv_handle_incoming_reliable_response(pjsip_inv_session *inv, |
| 2404 | pjsip_rx_data *rdata) |
| 2405 | { |
| 2406 | pjsip_tx_data *tdata; |
Benny Prijono | 9569a0b | 2007-10-04 15:35:26 +0000 | [diff] [blame] | 2407 | const pjmedia_sdp_session *sdp; |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2408 | pj_status_t status; |
| 2409 | |
| 2410 | /* Create PRACK */ |
| 2411 | status = pjsip_100rel_create_prack(inv, rdata, &tdata); |
| 2412 | if (status != PJ_SUCCESS) |
| 2413 | return; |
| 2414 | |
| 2415 | /* See if we need to attach SDP answer on the PRACK request */ |
| 2416 | sdp = inv_has_pending_answer(inv, pjsip_rdata_get_tsx(rdata)); |
| 2417 | if (sdp) { |
| 2418 | tdata->msg->body = create_sdp_body(tdata->pool, sdp); |
| 2419 | } |
| 2420 | |
| 2421 | /* Send PRACK (must be using 100rel module!) */ |
| 2422 | pjsip_100rel_send_prack(inv, tdata); |
| 2423 | } |
| 2424 | |
| 2425 | |
| 2426 | /* |
| 2427 | * Handle incoming PRACK. |
| 2428 | */ |
| 2429 | static void inv_respond_incoming_prack(pjsip_inv_session *inv, |
| 2430 | pjsip_rx_data *rdata) |
| 2431 | { |
| 2432 | pj_status_t status; |
| 2433 | |
| 2434 | /* Run through 100rel module to see if we can accept this |
| 2435 | * PRACK request. The 100rel will send 200/OK to PRACK request. |
| 2436 | */ |
| 2437 | status = pjsip_100rel_on_rx_prack(inv, rdata); |
| 2438 | if (status != PJ_SUCCESS) |
| 2439 | return; |
| 2440 | |
| 2441 | /* Now check for SDP answer in the PRACK request */ |
| 2442 | if (rdata->msg_info.msg->body) { |
| 2443 | status = inv_check_sdp_in_incoming_msg(inv, |
| 2444 | pjsip_rdata_get_tsx(rdata), rdata); |
| 2445 | } else { |
| 2446 | /* No SDP body */ |
| 2447 | status = -1; |
| 2448 | } |
| 2449 | |
| 2450 | /* If SDP negotiation has been successful, also mark the |
| 2451 | * SDP negotiation flag in the invite transaction to be |
| 2452 | * done too. |
| 2453 | */ |
| 2454 | if (status == PJ_SUCCESS && inv->invite_tsx) { |
| 2455 | struct tsx_inv_data *tsx_inv_data; |
| 2456 | |
| 2457 | /* Get/attach invite session's transaction data */ |
| 2458 | tsx_inv_data = (struct tsx_inv_data*) |
| 2459 | inv->invite_tsx->mod_data[mod_inv.mod.id]; |
| 2460 | if (tsx_inv_data == NULL) { |
| 2461 | tsx_inv_data = PJ_POOL_ZALLOC_T(inv->invite_tsx->pool, |
| 2462 | struct tsx_inv_data); |
| 2463 | tsx_inv_data->inv = inv; |
| 2464 | inv->invite_tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
| 2465 | } |
| 2466 | |
| 2467 | tsx_inv_data->sdp_done = PJ_TRUE; |
| 2468 | } |
| 2469 | } |
| 2470 | |
| 2471 | |
| 2472 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2473 | * State NULL is before anything is sent/received. |
| 2474 | */ |
| 2475 | static void inv_on_state_null( pjsip_inv_session *inv, pjsip_event *e) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2476 | { |
| 2477 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2478 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2479 | |
| 2480 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2481 | |
| 2482 | if (tsx->method.id == PJSIP_INVITE_METHOD) { |
| 2483 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2484 | /* Keep the initial INVITE transaction. */ |
| 2485 | if (inv->invite_tsx == NULL) |
| 2486 | inv->invite_tsx = tsx; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2487 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2488 | if (dlg->role == PJSIP_ROLE_UAC) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2489 | |
| 2490 | switch (tsx->state) { |
| 2491 | case PJSIP_TSX_STATE_CALLING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2492 | inv_set_state(inv, PJSIP_INV_STATE_CALLING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2493 | break; |
| 2494 | default: |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2495 | inv_on_state_calling(inv, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2496 | break; |
| 2497 | } |
| 2498 | |
| 2499 | } else { |
| 2500 | switch (tsx->state) { |
| 2501 | case PJSIP_TSX_STATE_TRYING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2502 | inv_set_state(inv, PJSIP_INV_STATE_INCOMING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2503 | break; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2504 | case PJSIP_TSX_STATE_PROCEEDING: |
| 2505 | inv_set_state(inv, PJSIP_INV_STATE_INCOMING, e); |
| 2506 | if (tsx->status_code > 100) |
| 2507 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
| 2508 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2509 | default: |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2510 | inv_on_state_incoming(inv, e); |
| 2511 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2512 | } |
| 2513 | } |
| 2514 | |
| 2515 | } else { |
| 2516 | pj_assert(!"Unexpected transaction type"); |
| 2517 | } |
| 2518 | } |
| 2519 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2520 | /* |
Benny Prijono | 0b4c57b | 2008-06-25 10:15:01 +0000 | [diff] [blame] | 2521 | * Generic UAC transaction handler: |
| 2522 | * - resend request on 401 or 407 response. |
| 2523 | * - terminate dialog on 408 and 481 response. |
| 2524 | */ |
| 2525 | static pj_bool_t handle_uac_tsx_response(pjsip_inv_session *inv, |
| 2526 | pjsip_event *e) |
| 2527 | { |
| 2528 | /* RFC 3261 Section 12.2.1.2: |
| 2529 | * If the response for a request within a dialog is a 481 |
| 2530 | * (Call/Transaction Does Not Exist) or a 408 (Request Timeout), the UAC |
| 2531 | * SHOULD terminate the dialog. A UAC SHOULD also terminate a dialog if |
| 2532 | * no response at all is received for the request (the client |
| 2533 | * transaction would inform the TU about the timeout.) |
| 2534 | * |
| 2535 | * For INVITE initiated dialogs, terminating the dialog consists of |
| 2536 | * sending a BYE. |
| 2537 | * |
| 2538 | * Note: |
| 2539 | * according to X, this should terminate dialog usage only, not the |
| 2540 | * dialog. |
| 2541 | */ |
| 2542 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2543 | |
| 2544 | pj_assert(tsx->role == PJSIP_UAC_ROLE); |
| 2545 | |
| 2546 | /* Note that 481 response to CANCEL does not terminate dialog usage, |
| 2547 | * but only the transaction. |
| 2548 | */ |
Benny Prijono | 61fc5e6 | 2008-06-25 18:35:31 +0000 | [diff] [blame^] | 2549 | if (inv->state != PJSIP_INV_STATE_DISCONNECTED && |
| 2550 | ((tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST && |
Benny Prijono | 0b4c57b | 2008-06-25 10:15:01 +0000 | [diff] [blame] | 2551 | tsx->method.id != PJSIP_CANCEL_METHOD) || |
Benny Prijono | 61fc5e6 | 2008-06-25 18:35:31 +0000 | [diff] [blame^] | 2552 | tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT || |
| 2553 | tsx->status_code == PJSIP_SC_TSX_TIMEOUT || |
| 2554 | tsx->status_code == PJSIP_SC_TSX_TRANSPORT_ERROR)) |
Benny Prijono | 0b4c57b | 2008-06-25 10:15:01 +0000 | [diff] [blame] | 2555 | { |
| 2556 | pjsip_tx_data *bye; |
| 2557 | pj_status_t status; |
| 2558 | |
| 2559 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
| 2560 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2561 | |
| 2562 | /* Send BYE */ |
| 2563 | status = pjsip_dlg_create_request(inv->dlg, pjsip_get_bye_method(), |
| 2564 | -1, &bye); |
| 2565 | if (status == PJ_SUCCESS) { |
| 2566 | pjsip_inv_send_msg(inv, bye); |
| 2567 | } |
| 2568 | |
| 2569 | return PJ_TRUE; /* Handled */ |
| 2570 | |
| 2571 | } |
| 2572 | /* Handle 401/407 challenge. */ |
| 2573 | else if (tsx->state == PJSIP_TSX_STATE_COMPLETED && |
| 2574 | (tsx->status_code == PJSIP_SC_UNAUTHORIZED || |
| 2575 | tsx->status_code == PJSIP_SC_PROXY_AUTHENTICATION_REQUIRED)) |
| 2576 | { |
| 2577 | |
| 2578 | pjsip_tx_data *tdata; |
| 2579 | pj_status_t status; |
| 2580 | |
| 2581 | status = pjsip_auth_clt_reinit_req( &inv->dlg->auth_sess, |
| 2582 | e->body.tsx_state.src.rdata, |
| 2583 | tsx->last_tx, &tdata); |
| 2584 | |
| 2585 | if (status != PJ_SUCCESS) { |
| 2586 | /* Does not have proper credentials. End the session. */ |
| 2587 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
| 2588 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2589 | |
| 2590 | } else { |
| 2591 | /* Re-send request. */ |
| 2592 | if (tsx->method.id == PJSIP_INVITE_METHOD) |
| 2593 | inv->invite_tsx = NULL; |
| 2594 | |
| 2595 | status = pjsip_inv_send_msg(inv, tdata); |
| 2596 | } |
| 2597 | |
| 2598 | return PJ_TRUE; /* Handled */ |
| 2599 | |
| 2600 | } else { |
| 2601 | return PJ_FALSE; /* Unhandled */ |
| 2602 | } |
| 2603 | } |
| 2604 | |
| 2605 | |
| 2606 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2607 | * State CALLING is after sending initial INVITE request but before |
| 2608 | * any response (with tag) is received. |
| 2609 | */ |
| 2610 | static void inv_on_state_calling( pjsip_inv_session *inv, pjsip_event *e) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2611 | { |
| 2612 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2613 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2614 | pj_status_t status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2615 | |
| 2616 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2617 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2618 | if (tsx == inv->invite_tsx) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2619 | |
| 2620 | switch (tsx->state) { |
| 2621 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2622 | case PJSIP_TSX_STATE_CALLING: |
| 2623 | inv_set_state(inv, PJSIP_INV_STATE_CALLING, e); |
| 2624 | break; |
| 2625 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2626 | case PJSIP_TSX_STATE_PROCEEDING: |
Benny Prijono | 1dc8be0 | 2007-05-30 04:26:40 +0000 | [diff] [blame] | 2627 | if (inv->pending_cancel) { |
| 2628 | pjsip_tx_data *cancel; |
| 2629 | |
| 2630 | inv->pending_cancel = PJ_FALSE; |
| 2631 | |
| 2632 | status = pjsip_inv_end_session(inv, 487, NULL, &cancel); |
| 2633 | if (status == PJ_SUCCESS && cancel) |
| 2634 | status = pjsip_inv_send_msg(inv, cancel); |
| 2635 | } |
| 2636 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2637 | if (dlg->remote.info->tag.slen) { |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2638 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2639 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2640 | |
| 2641 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2642 | e->body.tsx_state.src.rdata); |
| 2643 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2644 | if (pjsip_100rel_is_reliable(e->body.tsx_state.src.rdata)) { |
| 2645 | inv_handle_incoming_reliable_response( |
| 2646 | inv, e->body.tsx_state.src.rdata); |
| 2647 | } |
| 2648 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2649 | } else { |
| 2650 | /* Ignore 100 (Trying) response, as it doesn't change |
| 2651 | * session state. It only ceases retransmissions. |
| 2652 | */ |
| 2653 | } |
| 2654 | break; |
| 2655 | |
| 2656 | case PJSIP_TSX_STATE_COMPLETED: |
| 2657 | if (tsx->status_code/100 == 2) { |
| 2658 | |
| 2659 | /* This should not happen. |
| 2660 | * When transaction receives 2xx, it should be terminated |
| 2661 | */ |
| 2662 | pj_assert(0); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2663 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2664 | |
| 2665 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2666 | e->body.tsx_state.src.rdata); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2667 | |
Benny Prijono | 0606e70 | 2007-05-22 12:21:40 +0000 | [diff] [blame] | 2668 | } else if ((tsx->status_code==401 || tsx->status_code==407) && |
| 2669 | !inv->cancelling) |
| 2670 | { |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2671 | |
| 2672 | /* Handle authentication failure: |
| 2673 | * Resend the request with Authorization header. |
| 2674 | */ |
| 2675 | pjsip_tx_data *tdata; |
| 2676 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2677 | status = pjsip_auth_clt_reinit_req(&inv->dlg->auth_sess, |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2678 | e->body.tsx_state.src.rdata, |
| 2679 | tsx->last_tx, |
| 2680 | &tdata); |
| 2681 | |
| 2682 | if (status != PJ_SUCCESS) { |
| 2683 | |
| 2684 | /* Does not have proper credentials. |
| 2685 | * End the session. |
| 2686 | */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2687 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2688 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2689 | |
| 2690 | } else { |
| 2691 | |
| 2692 | /* Restart session. */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2693 | inv->state = PJSIP_INV_STATE_NULL; |
| 2694 | inv->invite_tsx = NULL; |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 2695 | if (inv->last_answer) { |
| 2696 | pjsip_tx_data_dec_ref(inv->last_answer); |
| 2697 | inv->last_answer = NULL; |
| 2698 | } |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2699 | |
| 2700 | /* Send the request. */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 2701 | status = pjsip_inv_send_msg(inv, tdata); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2702 | } |
| 2703 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2704 | } else { |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2705 | |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2706 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2707 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2708 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2709 | } |
| 2710 | break; |
| 2711 | |
| 2712 | case PJSIP_TSX_STATE_TERMINATED: |
| 2713 | /* INVITE transaction can be terminated either because UAC |
| 2714 | * transaction received 2xx response or because of transport |
| 2715 | * error. |
| 2716 | */ |
| 2717 | if (tsx->status_code/100 == 2) { |
| 2718 | /* This must be receipt of 2xx response */ |
| 2719 | |
| 2720 | /* Set state to CONNECTING */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2721 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2722 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2723 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2724 | e->body.tsx_state.src.rdata); |
| 2725 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2726 | /* Send ACK */ |
| 2727 | pj_assert(e->body.tsx_state.type == PJSIP_EVENT_RX_MSG); |
| 2728 | |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 2729 | inv_send_ack(inv, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2730 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2731 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2732 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2733 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2734 | } |
| 2735 | break; |
| 2736 | |
Benny Prijono | 34a404e | 2006-02-09 14:38:30 +0000 | [diff] [blame] | 2737 | default: |
| 2738 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2739 | } |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2740 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2741 | } else if (tsx->role == PJSIP_ROLE_UAC) { |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2742 | /* |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2743 | * Handle case when outgoing request is answered with 481 (Call/ |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2744 | * Transaction Does Not Exist), 408, or when it's timed out. In these |
| 2745 | * cases, disconnect session (i.e. dialog usage only). |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2746 | * Note that 481 response to CANCEL does not terminate dialog usage, |
| 2747 | * but only the transaction. |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2748 | */ |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2749 | if ((tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST && |
| 2750 | tsx->method.id != PJSIP_CANCEL_METHOD) || |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2751 | tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT || |
| 2752 | tsx->status_code == PJSIP_SC_TSX_TIMEOUT || |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2753 | tsx->status_code == PJSIP_SC_TSX_TRANSPORT_ERROR) |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2754 | { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2755 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2756 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2757 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2758 | } |
| 2759 | } |
| 2760 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2761 | /* |
| 2762 | * State INCOMING is after we received the request, but before |
| 2763 | * responses with tag are sent. |
| 2764 | */ |
| 2765 | static void inv_on_state_incoming( pjsip_inv_session *inv, pjsip_event *e) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2766 | { |
| 2767 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2768 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2769 | |
| 2770 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2771 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2772 | if (tsx == inv->invite_tsx) { |
| 2773 | |
| 2774 | /* |
| 2775 | * Handle the INVITE state transition. |
| 2776 | */ |
| 2777 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2778 | switch (tsx->state) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2779 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2780 | case PJSIP_TSX_STATE_TRYING: |
| 2781 | inv_set_state(inv, PJSIP_INV_STATE_INCOMING, e); |
| 2782 | break; |
| 2783 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2784 | case PJSIP_TSX_STATE_PROCEEDING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2785 | /* |
| 2786 | * Transaction sent provisional response. |
| 2787 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2788 | if (tsx->status_code > 100) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2789 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2790 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2791 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2792 | case PJSIP_TSX_STATE_COMPLETED: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2793 | /* |
| 2794 | * Transaction sent final response. |
| 2795 | */ |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2796 | if (tsx->status_code/100 == 2) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2797 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2798 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2799 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2800 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2801 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2802 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2803 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2804 | case PJSIP_TSX_STATE_TERMINATED: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2805 | /* |
| 2806 | * This happens on transport error (e.g. failed to send |
| 2807 | * response) |
| 2808 | */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2809 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2810 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2811 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2812 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2813 | default: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2814 | pj_assert(!"Unexpected INVITE state"); |
| 2815 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2816 | } |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2817 | |
| 2818 | } else if (tsx->method.id == PJSIP_CANCEL_METHOD && |
| 2819 | tsx->role == PJSIP_ROLE_UAS && |
| 2820 | tsx->state < PJSIP_TSX_STATE_COMPLETED && |
| 2821 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG ) |
| 2822 | { |
| 2823 | |
| 2824 | /* |
| 2825 | * Handle incoming CANCEL request. |
| 2826 | */ |
| 2827 | |
| 2828 | inv_respond_incoming_cancel(inv, tsx, e->body.tsx_state.src.rdata); |
| 2829 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2830 | } |
| 2831 | } |
| 2832 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2833 | /* |
| 2834 | * State EARLY is for both UAS and UAC, after response with To tag |
| 2835 | * is sent/received. |
| 2836 | */ |
| 2837 | static void inv_on_state_early( pjsip_inv_session *inv, pjsip_event *e) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2838 | { |
| 2839 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2840 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2841 | |
| 2842 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2843 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2844 | if (tsx == inv->invite_tsx) { |
| 2845 | |
| 2846 | /* |
| 2847 | * Handle the INVITE state progress. |
| 2848 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2849 | |
| 2850 | switch (tsx->state) { |
| 2851 | |
| 2852 | case PJSIP_TSX_STATE_PROCEEDING: |
| 2853 | /* Send/received another provisional response. */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2854 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2855 | |
| 2856 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 2857 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2858 | e->body.tsx_state.src.rdata); |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2859 | |
| 2860 | if (pjsip_100rel_is_reliable(e->body.tsx_state.src.rdata)) { |
| 2861 | inv_handle_incoming_reliable_response( |
| 2862 | inv, e->body.tsx_state.src.rdata); |
| 2863 | } |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2864 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2865 | break; |
| 2866 | |
| 2867 | case PJSIP_TSX_STATE_COMPLETED: |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2868 | if (tsx->status_code/100 == 2) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2869 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2870 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 2871 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2872 | e->body.tsx_state.src.rdata); |
| 2873 | } |
| 2874 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2875 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2876 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2877 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2878 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2879 | break; |
| 2880 | |
Benny Prijono | f319507 | 2006-02-14 21:15:30 +0000 | [diff] [blame] | 2881 | case PJSIP_TSX_STATE_CONFIRMED: |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 2882 | /* For some reason can go here (maybe when ACK for 2xx has |
| 2883 | * the same branch value as the INVITE transaction) */ |
Benny Prijono | f319507 | 2006-02-14 21:15:30 +0000 | [diff] [blame] | 2884 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2885 | case PJSIP_TSX_STATE_TERMINATED: |
| 2886 | /* INVITE transaction can be terminated either because UAC |
| 2887 | * transaction received 2xx response or because of transport |
| 2888 | * error. |
| 2889 | */ |
| 2890 | if (tsx->status_code/100 == 2) { |
| 2891 | |
| 2892 | /* This must be receipt of 2xx response */ |
| 2893 | |
| 2894 | /* Set state to CONNECTING */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2895 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2896 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2897 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 2898 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2899 | e->body.tsx_state.src.rdata); |
| 2900 | } |
| 2901 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2902 | /* if UAC, send ACK and move state to confirmed. */ |
| 2903 | if (tsx->role == PJSIP_ROLE_UAC) { |
| 2904 | pj_assert(e->body.tsx_state.type == PJSIP_EVENT_RX_MSG); |
| 2905 | |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 2906 | inv_send_ack(inv, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2907 | } |
| 2908 | |
| 2909 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2910 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2911 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2912 | } |
| 2913 | break; |
| 2914 | |
| 2915 | default: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2916 | pj_assert(!"Unexpected INVITE tsx state"); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2917 | } |
| 2918 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2919 | } else if (inv->role == PJSIP_ROLE_UAS && |
| 2920 | tsx->role == PJSIP_ROLE_UAS && |
| 2921 | tsx->method.id == PJSIP_CANCEL_METHOD && |
| 2922 | tsx->state < PJSIP_TSX_STATE_COMPLETED && |
| 2923 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG ) |
| 2924 | { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2925 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2926 | /* |
| 2927 | * Handle incoming CANCEL request. |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2928 | */ |
| 2929 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2930 | inv_respond_incoming_cancel(inv, tsx, e->body.tsx_state.src.rdata); |
| 2931 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2932 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 2933 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 2934 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2935 | { |
| 2936 | /* |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2937 | * Handle incoming UPDATE |
| 2938 | */ |
| 2939 | inv_respond_incoming_update(inv, e->body.tsx_state.src.rdata); |
| 2940 | |
| 2941 | |
| 2942 | } else if (tsx->role == PJSIP_ROLE_UAC && |
| 2943 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 2944 | tsx->state == PJSIP_TSX_STATE_TERMINATED) && |
| 2945 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
| 2946 | { |
| 2947 | /* |
| 2948 | * Handle response to outgoing UPDATE request. |
| 2949 | */ |
| 2950 | inv_handle_update_response(inv, e); |
| 2951 | |
| 2952 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 2953 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 2954 | pjsip_method_cmp(&tsx->method, &pjsip_prack_method)==0) |
| 2955 | { |
| 2956 | /* |
| 2957 | * Handle incoming PRACK |
| 2958 | */ |
| 2959 | inv_respond_incoming_prack(inv, e->body.tsx_state.src.rdata); |
| 2960 | |
| 2961 | } else if (tsx->role == PJSIP_ROLE_UAC) { |
Benny Prijono | 0b4c57b | 2008-06-25 10:15:01 +0000 | [diff] [blame] | 2962 | |
| 2963 | /* Generic handling for UAC tsx completion */ |
| 2964 | handle_uac_tsx_response(inv, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2965 | } |
| 2966 | } |
| 2967 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2968 | /* |
| 2969 | * State CONNECTING is after 2xx response to INVITE is sent/received. |
| 2970 | */ |
| 2971 | static void inv_on_state_connecting( pjsip_inv_session *inv, pjsip_event *e) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2972 | { |
| 2973 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2974 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2975 | |
| 2976 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2977 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2978 | if (tsx == inv->invite_tsx) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2979 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2980 | /* |
| 2981 | * Handle INVITE state progression. |
| 2982 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2983 | switch (tsx->state) { |
| 2984 | |
| 2985 | case PJSIP_TSX_STATE_CONFIRMED: |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 2986 | /* It can only go here if incoming ACK request has the same Via |
| 2987 | * branch parameter as the INVITE transaction. |
| 2988 | */ |
| 2989 | if (tsx->status_code/100 == 2) { |
| 2990 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 2991 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2992 | e->body.tsx_state.src.rdata); |
| 2993 | } |
| 2994 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2995 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, e); |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 2996 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2997 | break; |
| 2998 | |
| 2999 | case PJSIP_TSX_STATE_TERMINATED: |
| 3000 | /* INVITE transaction can be terminated either because UAC |
| 3001 | * transaction received 2xx response or because of transport |
| 3002 | * error. |
| 3003 | */ |
| 3004 | if (tsx->status_code/100 != 2) { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 3005 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3006 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3007 | } |
| 3008 | break; |
| 3009 | |
| 3010 | case PJSIP_TSX_STATE_DESTROYED: |
| 3011 | /* Do nothing. */ |
| 3012 | break; |
| 3013 | |
| 3014 | default: |
| 3015 | pj_assert(!"Unexpected state"); |
| 3016 | } |
| 3017 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3018 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 3019 | tsx->method.id == PJSIP_BYE_METHOD && |
| 3020 | tsx->status_code < 200 && |
| 3021 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 3022 | { |
| 3023 | |
| 3024 | /* |
| 3025 | * Handle incoming BYE. |
| 3026 | */ |
| 3027 | |
| 3028 | inv_respond_incoming_bye( inv, tsx, e->body.tsx_state.src.rdata, e ); |
| 3029 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 3030 | } else if (tsx->method.id == PJSIP_BYE_METHOD && |
| 3031 | tsx->role == PJSIP_ROLE_UAC && |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 3032 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 3033 | tsx->state == PJSIP_TSX_STATE_TERMINATED)) |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 3034 | { |
| 3035 | |
| 3036 | /* |
| 3037 | * Outgoing BYE |
| 3038 | */ |
| 3039 | inv_handle_bye_response( inv, tsx, e->body.tsx_state.src.rdata, e); |
| 3040 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3041 | } |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3042 | else if (tsx->method.id == PJSIP_CANCEL_METHOD && |
| 3043 | tsx->role == PJSIP_ROLE_UAS && |
| 3044 | tsx->status_code < 200 && |
| 3045 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 3046 | { |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 3047 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3048 | /* |
| 3049 | * Handle strandled incoming CANCEL. |
| 3050 | */ |
| 3051 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
| 3052 | pjsip_tx_data *tdata; |
| 3053 | pj_status_t status; |
| 3054 | |
| 3055 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 3056 | if (status != PJ_SUCCESS) return; |
| 3057 | |
| 3058 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 3059 | if (status != PJ_SUCCESS) return; |
| 3060 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3061 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 3062 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 3063 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
| 3064 | { |
| 3065 | /* |
| 3066 | * Handle incoming UPDATE |
| 3067 | */ |
| 3068 | inv_respond_incoming_update(inv, e->body.tsx_state.src.rdata); |
| 3069 | |
| 3070 | |
| 3071 | } else if (tsx->role == PJSIP_ROLE_UAC && |
| 3072 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 3073 | tsx->state == PJSIP_TSX_STATE_TERMINATED) && |
| 3074 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
| 3075 | { |
| 3076 | /* |
| 3077 | * Handle response to outgoing UPDATE request. |
| 3078 | */ |
Benny Prijono | 0b4c57b | 2008-06-25 10:15:01 +0000 | [diff] [blame] | 3079 | if (handle_uac_tsx_response(inv, e) == PJ_FALSE) |
Benny Prijono | 8740238 | 2008-02-21 19:28:21 +0000 | [diff] [blame] | 3080 | inv_handle_update_response(inv, e); |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3081 | |
| 3082 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 3083 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 3084 | pjsip_method_cmp(&tsx->method, &pjsip_prack_method)==0) |
| 3085 | { |
| 3086 | /* |
| 3087 | * Handle incoming PRACK |
| 3088 | */ |
| 3089 | inv_respond_incoming_prack(inv, e->body.tsx_state.src.rdata); |
| 3090 | |
| 3091 | } else if (tsx->role == PJSIP_ROLE_UAC) { |
Benny Prijono | 8740238 | 2008-02-21 19:28:21 +0000 | [diff] [blame] | 3092 | |
Benny Prijono | 0b4c57b | 2008-06-25 10:15:01 +0000 | [diff] [blame] | 3093 | /* Generic handling for UAC tsx completion */ |
| 3094 | handle_uac_tsx_response(inv, e); |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3095 | } |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3096 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3097 | } |
| 3098 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3099 | /* |
| 3100 | * State CONFIRMED is after ACK is sent/received. |
| 3101 | */ |
| 3102 | static void inv_on_state_confirmed( pjsip_inv_session *inv, pjsip_event *e) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3103 | { |
| 3104 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 3105 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 3106 | |
| 3107 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 3108 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3109 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3110 | if (tsx->method.id == PJSIP_BYE_METHOD && |
| 3111 | tsx->role == PJSIP_ROLE_UAC && |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 3112 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 3113 | tsx->state == PJSIP_TSX_STATE_TERMINATED)) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3114 | { |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 3115 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3116 | /* |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 3117 | * Outgoing BYE |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3118 | */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3119 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 3120 | inv_handle_bye_response( inv, tsx, e->body.tsx_state.src.rdata, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3121 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3122 | } |
| 3123 | else if (tsx->method.id == PJSIP_BYE_METHOD && |
| 3124 | tsx->role == PJSIP_ROLE_UAS && |
| 3125 | tsx->status_code < 200 && |
| 3126 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 3127 | { |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 3128 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3129 | /* |
| 3130 | * Handle incoming BYE. |
| 3131 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3132 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3133 | inv_respond_incoming_bye( inv, tsx, e->body.tsx_state.src.rdata, e ); |
| 3134 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3135 | } |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3136 | else if (tsx->method.id == PJSIP_CANCEL_METHOD && |
| 3137 | tsx->role == PJSIP_ROLE_UAS && |
| 3138 | tsx->status_code < 200 && |
| 3139 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 3140 | { |
| 3141 | |
| 3142 | /* |
| 3143 | * Handle strandled incoming CANCEL. |
| 3144 | */ |
| 3145 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
| 3146 | pjsip_tx_data *tdata; |
| 3147 | pj_status_t status; |
| 3148 | |
| 3149 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 3150 | if (status != PJ_SUCCESS) return; |
| 3151 | |
| 3152 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 3153 | if (status != PJ_SUCCESS) return; |
| 3154 | |
| 3155 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3156 | else if (tsx->method.id == PJSIP_INVITE_METHOD && |
| 3157 | tsx->role == PJSIP_ROLE_UAS) |
| 3158 | { |
| 3159 | |
| 3160 | /* |
| 3161 | * Handle incoming re-INVITE |
| 3162 | */ |
| 3163 | if (tsx->state == PJSIP_TSX_STATE_TRYING) { |
| 3164 | |
| 3165 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
| 3166 | pjsip_tx_data *tdata; |
| 3167 | pj_status_t status; |
| 3168 | |
| 3169 | /* Check if we have INVITE pending. */ |
| 3170 | if (inv->invite_tsx && inv->invite_tsx!=tsx) { |
Benny Prijono | 4624994 | 2007-02-19 22:23:14 +0000 | [diff] [blame] | 3171 | pj_str_t reason; |
| 3172 | |
| 3173 | reason = pj_str("Another INVITE transaction in progress"); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3174 | |
| 3175 | /* Can not receive re-INVITE while another one is pending. */ |
Benny Prijono | 4624994 | 2007-02-19 22:23:14 +0000 | [diff] [blame] | 3176 | status = pjsip_dlg_create_response( inv->dlg, rdata, 500, |
| 3177 | &reason, &tdata); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3178 | if (status != PJ_SUCCESS) |
| 3179 | return; |
| 3180 | |
| 3181 | status = pjsip_dlg_send_response( inv->dlg, tsx, tdata); |
| 3182 | |
| 3183 | |
| 3184 | return; |
| 3185 | } |
| 3186 | |
| 3187 | /* Save the invite transaction. */ |
| 3188 | inv->invite_tsx = tsx; |
| 3189 | |
| 3190 | /* Process SDP in incoming message. */ |
| 3191 | status = inv_check_sdp_in_incoming_msg(inv, tsx, rdata); |
| 3192 | |
| 3193 | if (status != PJ_SUCCESS) { |
| 3194 | |
| 3195 | /* Not Acceptable */ |
| 3196 | const pjsip_hdr *accept; |
| 3197 | |
| 3198 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 3199 | 488, NULL, &tdata); |
| 3200 | if (status != PJ_SUCCESS) |
| 3201 | return; |
| 3202 | |
| 3203 | |
| 3204 | accept = pjsip_endpt_get_capability(dlg->endpt, PJSIP_H_ACCEPT, |
| 3205 | NULL); |
| 3206 | if (accept) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 3207 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3208 | pjsip_hdr_clone(tdata->pool, accept)); |
| 3209 | } |
| 3210 | |
| 3211 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 3212 | |
| 3213 | return; |
| 3214 | } |
| 3215 | |
| 3216 | /* Create 2xx ANSWER */ |
| 3217 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 3218 | if (status != PJ_SUCCESS) |
| 3219 | return; |
| 3220 | |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 3221 | /* If the INVITE request has SDP body, send answer. |
| 3222 | * Otherwise generate offer from local active SDP. |
| 3223 | */ |
| 3224 | if (rdata->msg_info.msg->body != NULL) { |
| 3225 | status = process_answer(inv, 200, tdata, NULL); |
| 3226 | } else { |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 3227 | /* INVITE does not have SDP. |
| 3228 | * If on_create_offer() callback is implemented, ask app. |
| 3229 | * to generate an offer, otherwise just send active local |
| 3230 | * SDP to signal that nothing gets modified. |
| 3231 | */ |
| 3232 | pjmedia_sdp_session *sdp = NULL; |
| 3233 | |
| 3234 | if (mod_inv.cb.on_create_offer) { |
| 3235 | (*mod_inv.cb.on_create_offer)(inv, &sdp); |
| 3236 | if (sdp) { |
| 3237 | status = pjmedia_sdp_neg_modify_local_offer(dlg->pool, |
| 3238 | inv->neg, |
| 3239 | sdp); |
| 3240 | } |
| 3241 | } |
| 3242 | |
| 3243 | if (sdp == NULL) { |
| 3244 | const pjmedia_sdp_session *active_sdp = NULL; |
| 3245 | status = pjmedia_sdp_neg_send_local_offer(dlg->pool, |
| 3246 | inv->neg, |
| 3247 | &active_sdp); |
| 3248 | if (status == PJ_SUCCESS) |
| 3249 | sdp = (pjmedia_sdp_session*) active_sdp; |
| 3250 | } |
| 3251 | |
| 3252 | if (sdp) { |
| 3253 | tdata->msg->body = create_sdp_body(tdata->pool, sdp); |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 3254 | } |
| 3255 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3256 | |
Benny Prijono | 1d9b9a4 | 2006-09-25 13:40:12 +0000 | [diff] [blame] | 3257 | if (status != PJ_SUCCESS) { |
| 3258 | /* |
| 3259 | * SDP negotiation has failed. |
| 3260 | */ |
| 3261 | pj_status_t rc; |
| 3262 | pj_str_t reason; |
| 3263 | |
| 3264 | /* Delete the 2xx answer */ |
| 3265 | pjsip_tx_data_dec_ref(tdata); |
| 3266 | |
| 3267 | /* Create 500 response */ |
| 3268 | reason = pj_str("SDP negotiation failed"); |
| 3269 | rc = pjsip_dlg_create_response(dlg, rdata, 500, &reason, |
| 3270 | &tdata); |
| 3271 | if (rc == PJ_SUCCESS) { |
| 3272 | pjsip_warning_hdr *w; |
| 3273 | const pj_str_t *endpt_name; |
| 3274 | |
| 3275 | endpt_name = pjsip_endpt_name(dlg->endpt); |
| 3276 | w = pjsip_warning_hdr_create_from_status(tdata->pool, |
| 3277 | endpt_name, |
| 3278 | status); |
| 3279 | if (w) |
| 3280 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)w); |
| 3281 | |
| 3282 | pjsip_inv_send_msg(inv, tdata); |
| 3283 | } |
| 3284 | return; |
| 3285 | } |
| 3286 | |
| 3287 | /* Send 2xx regardless of the status of negotiation */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 3288 | status = pjsip_inv_send_msg(inv, tdata); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3289 | |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 3290 | } else if (tsx->state == PJSIP_TSX_STATE_CONFIRMED) { |
| 3291 | /* This is the case where ACK has the same branch as |
| 3292 | * the INVITE request. |
| 3293 | */ |
| 3294 | if (tsx->status_code/100 == 2 && |
| 3295 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 3296 | { |
| 3297 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 3298 | e->body.tsx_state.src.rdata); |
| 3299 | } |
| 3300 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3301 | } |
| 3302 | |
| 3303 | } |
| 3304 | else if (tsx->method.id == PJSIP_INVITE_METHOD && |
| 3305 | tsx->role == PJSIP_ROLE_UAC) |
| 3306 | { |
Benny Prijono | 22e48c9 | 2008-03-20 14:40:50 +0000 | [diff] [blame] | 3307 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3308 | /* |
| 3309 | * Handle outgoing re-INVITE |
| 3310 | */ |
Benny Prijono | 22e48c9 | 2008-03-20 14:40:50 +0000 | [diff] [blame] | 3311 | if (tsx->state == PJSIP_TSX_STATE_CALLING) { |
| 3312 | |
Benny Prijono | 61fc5e6 | 2008-06-25 18:35:31 +0000 | [diff] [blame^] | 3313 | /* Must not have other pending INVITE transaction */ |
| 3314 | pj_assert(inv->invite_tsx==NULL || tsx==inv->invite_tsx); |
| 3315 | |
Benny Prijono | 22e48c9 | 2008-03-20 14:40:50 +0000 | [diff] [blame] | 3316 | /* Save pending invite transaction */ |
| 3317 | inv->invite_tsx = tsx; |
| 3318 | |
| 3319 | } else if (tsx->state == PJSIP_TSX_STATE_TERMINATED && |
| 3320 | tsx->status_code/100 == 2) |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3321 | { |
| 3322 | |
| 3323 | /* Re-INVITE was accepted. */ |
| 3324 | |
| 3325 | /* Process SDP */ |
| 3326 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 3327 | e->body.tsx_state.src.rdata); |
| 3328 | |
| 3329 | /* Send ACK */ |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame] | 3330 | inv_send_ack(inv, e); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3331 | |
Benny Prijono | 0b4c57b | 2008-06-25 10:15:01 +0000 | [diff] [blame] | 3332 | } else if (handle_uac_tsx_response(inv, e)) { |
Benny Prijono | 8740238 | 2008-02-21 19:28:21 +0000 | [diff] [blame] | 3333 | |
| 3334 | /* Handle response that terminates dialog */ |
| 3335 | /* Nothing to do (already handled) */ |
| 3336 | |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 3337 | } else if (tsx->status_code >= 300 && tsx->status_code < 700) { |
| 3338 | |
| 3339 | pjmedia_sdp_neg_state neg_state; |
| 3340 | |
| 3341 | /* Outgoing INVITE transaction has failed, cancel SDP nego */ |
| 3342 | neg_state = pjmedia_sdp_neg_get_state(inv->neg); |
| 3343 | if (neg_state == PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) { |
| 3344 | pjmedia_sdp_neg_cancel_offer(inv->neg); |
| 3345 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3346 | } |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3347 | |
| 3348 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 3349 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 3350 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
| 3351 | { |
| 3352 | /* |
| 3353 | * Handle incoming UPDATE |
| 3354 | */ |
| 3355 | inv_respond_incoming_update(inv, e->body.tsx_state.src.rdata); |
| 3356 | |
| 3357 | } else if (tsx->role == PJSIP_ROLE_UAC && |
| 3358 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 3359 | tsx->state == PJSIP_TSX_STATE_TERMINATED) && |
| 3360 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
| 3361 | { |
| 3362 | /* |
| 3363 | * Handle response to outgoing UPDATE request. |
| 3364 | */ |
Benny Prijono | 0b4c57b | 2008-06-25 10:15:01 +0000 | [diff] [blame] | 3365 | if (handle_uac_tsx_response(inv, e) == PJ_FALSE) |
Benny Prijono | 8740238 | 2008-02-21 19:28:21 +0000 | [diff] [blame] | 3366 | inv_handle_update_response(inv, e); |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3367 | |
| 3368 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 3369 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 3370 | pjsip_method_cmp(&tsx->method, &pjsip_prack_method)==0) |
| 3371 | { |
| 3372 | /* |
| 3373 | * Handle strandled incoming PRACK |
| 3374 | */ |
| 3375 | inv_respond_incoming_prack(inv, e->body.tsx_state.src.rdata); |
| 3376 | |
| 3377 | } else if (tsx->role == PJSIP_ROLE_UAC) { |
| 3378 | /* |
Benny Prijono | 0b4c57b | 2008-06-25 10:15:01 +0000 | [diff] [blame] | 3379 | * Handle 401/407/408/481 response |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3380 | */ |
Benny Prijono | 0b4c57b | 2008-06-25 10:15:01 +0000 | [diff] [blame] | 3381 | handle_uac_tsx_response(inv, e); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3382 | } |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3383 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3384 | } |
| 3385 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3386 | /* |
| 3387 | * After session has been terminated, but before dialog is destroyed |
| 3388 | * (because dialog has other usages, or because dialog is waiting for |
| 3389 | * the last transaction to terminate). |
| 3390 | */ |
| 3391 | static void inv_on_state_disconnected( pjsip_inv_session *inv, pjsip_event *e) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3392 | { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3393 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 3394 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3395 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3396 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 3397 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3398 | if (tsx->role == PJSIP_ROLE_UAS && |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3399 | tsx->status_code < 200 && |
| 3400 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 3401 | { |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3402 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3403 | |
| 3404 | /* |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3405 | * Respond BYE with 200/OK |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3406 | */ |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3407 | if (tsx->method.id == PJSIP_BYE_METHOD) { |
| 3408 | inv_respond_incoming_bye( inv, tsx, rdata, e ); |
| 3409 | } else if (tsx->method.id == PJSIP_CANCEL_METHOD) { |
| 3410 | /* |
| 3411 | * Respond CANCEL with 200/OK too. |
| 3412 | */ |
| 3413 | pjsip_tx_data *tdata; |
| 3414 | pj_status_t status; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3415 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3416 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 3417 | if (status != PJ_SUCCESS) return; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3418 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3419 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 3420 | if (status != PJ_SUCCESS) return; |
| 3421 | |
| 3422 | } |
Benny Prijono | 61fc5e6 | 2008-06-25 18:35:31 +0000 | [diff] [blame^] | 3423 | |
| 3424 | } else if (tsx->role == PJSIP_ROLE_UAC) { |
| 3425 | /* |
| 3426 | * Handle 401/407/408/481 response |
| 3427 | */ |
| 3428 | handle_uac_tsx_response(inv, e); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3429 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3430 | } |
| 3431 | |