Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
Benny Prijono | a771a51 | 2007-02-19 01:13:53 +0000 | [diff] [blame] | 3 | * Copyright (C) 2003-2007 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 | */ |
| 679 | PJ_DEF(pj_status_t) pjsip_inv_verify_request(pjsip_rx_data *rdata, |
| 680 | unsigned *options, |
| 681 | const pjmedia_sdp_session *l_sdp, |
| 682 | pjsip_dialog *dlg, |
| 683 | pjsip_endpoint *endpt, |
| 684 | pjsip_tx_data **p_tdata) |
| 685 | { |
| 686 | pjsip_msg *msg; |
| 687 | pjsip_allow_hdr *allow; |
| 688 | pjsip_supported_hdr *sup_hdr; |
| 689 | pjsip_require_hdr *req_hdr; |
| 690 | int code = 200; |
| 691 | unsigned rem_option = 0; |
| 692 | pj_status_t status = PJ_SUCCESS; |
| 693 | pjsip_hdr res_hdr_list; |
| 694 | |
| 695 | /* Init return arguments. */ |
| 696 | if (p_tdata) *p_tdata = NULL; |
| 697 | |
| 698 | /* Verify arguments. */ |
| 699 | PJ_ASSERT_RETURN(rdata != NULL && options != NULL, PJ_EINVAL); |
| 700 | |
| 701 | /* Normalize options */ |
| 702 | if (*options & PJSIP_INV_REQUIRE_100REL) |
| 703 | *options |= PJSIP_INV_SUPPORT_100REL; |
| 704 | |
| 705 | if (*options & PJSIP_INV_REQUIRE_TIMER) |
| 706 | *options |= PJSIP_INV_SUPPORT_TIMER; |
| 707 | |
| 708 | /* Get the message in rdata */ |
| 709 | msg = rdata->msg_info.msg; |
| 710 | |
| 711 | /* Must be INVITE request. */ |
| 712 | PJ_ASSERT_RETURN(msg->type == PJSIP_REQUEST_MSG && |
| 713 | msg->line.req.method.id == PJSIP_INVITE_METHOD, |
| 714 | PJ_EINVAL); |
| 715 | |
| 716 | /* If tdata is specified, then either dlg or endpt must be specified */ |
| 717 | PJ_ASSERT_RETURN((!p_tdata) || (endpt || dlg), PJ_EINVAL); |
| 718 | |
| 719 | /* Get the endpoint */ |
| 720 | endpt = endpt ? endpt : dlg->endpt; |
| 721 | |
| 722 | /* Init response header list */ |
| 723 | pj_list_init(&res_hdr_list); |
| 724 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 725 | /* Check the request body, see if it'inv something that we support |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 726 | * (i.e. SDP). |
| 727 | */ |
| 728 | if (msg->body) { |
| 729 | pjsip_msg_body *body = msg->body; |
| 730 | pj_str_t str_application = {"application", 11}; |
| 731 | pj_str_t str_sdp = { "sdp", 3 }; |
| 732 | pjmedia_sdp_session *sdp; |
| 733 | |
| 734 | /* Check content type. */ |
| 735 | if (pj_stricmp(&body->content_type.type, &str_application) != 0 || |
| 736 | pj_stricmp(&body->content_type.subtype, &str_sdp) != 0) |
| 737 | { |
| 738 | /* Not "application/sdp" */ |
| 739 | code = PJSIP_SC_UNSUPPORTED_MEDIA_TYPE; |
| 740 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 741 | |
| 742 | if (p_tdata) { |
| 743 | /* Add Accept header to response */ |
| 744 | pjsip_accept_hdr *acc; |
| 745 | |
| 746 | acc = pjsip_accept_hdr_create(rdata->tp_info.pool); |
| 747 | PJ_ASSERT_RETURN(acc, PJ_ENOMEM); |
| 748 | acc->values[acc->count++] = pj_str("application/sdp"); |
| 749 | pj_list_push_back(&res_hdr_list, acc); |
| 750 | } |
| 751 | |
| 752 | goto on_return; |
| 753 | } |
| 754 | |
| 755 | /* Parse and validate SDP */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 756 | status = pjmedia_sdp_parse(rdata->tp_info.pool, |
| 757 | (char*)body->data, body->len, &sdp); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 758 | if (status == PJ_SUCCESS) |
| 759 | status = pjmedia_sdp_validate(sdp); |
| 760 | |
| 761 | if (status != PJ_SUCCESS) { |
| 762 | /* Unparseable or invalid SDP */ |
| 763 | code = PJSIP_SC_BAD_REQUEST; |
| 764 | |
| 765 | if (p_tdata) { |
| 766 | /* Add Warning header. */ |
| 767 | pjsip_warning_hdr *w; |
| 768 | |
| 769 | w = pjsip_warning_hdr_create_from_status(rdata->tp_info.pool, |
| 770 | pjsip_endpt_name(endpt), |
| 771 | status); |
| 772 | PJ_ASSERT_RETURN(w, PJ_ENOMEM); |
| 773 | |
| 774 | pj_list_push_back(&res_hdr_list, w); |
| 775 | } |
| 776 | |
| 777 | goto on_return; |
| 778 | } |
| 779 | |
| 780 | /* Negotiate with local SDP */ |
| 781 | if (l_sdp) { |
| 782 | pjmedia_sdp_neg *neg; |
| 783 | |
| 784 | /* Local SDP must be valid! */ |
| 785 | PJ_ASSERT_RETURN((status=pjmedia_sdp_validate(l_sdp))==PJ_SUCCESS, |
| 786 | status); |
| 787 | |
| 788 | /* Create SDP negotiator */ |
| 789 | status = pjmedia_sdp_neg_create_w_remote_offer( |
| 790 | rdata->tp_info.pool, l_sdp, sdp, &neg); |
| 791 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, status); |
| 792 | |
| 793 | /* Negotiate SDP */ |
| 794 | status = pjmedia_sdp_neg_negotiate(rdata->tp_info.pool, neg, 0); |
| 795 | if (status != PJ_SUCCESS) { |
| 796 | |
| 797 | /* Incompatible media */ |
| 798 | code = PJSIP_SC_NOT_ACCEPTABLE_HERE; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 799 | |
| 800 | if (p_tdata) { |
| 801 | pjsip_accept_hdr *acc; |
| 802 | pjsip_warning_hdr *w; |
| 803 | |
| 804 | /* Add Warning header. */ |
| 805 | w = pjsip_warning_hdr_create_from_status( |
| 806 | rdata->tp_info.pool, |
| 807 | pjsip_endpt_name(endpt), status); |
| 808 | PJ_ASSERT_RETURN(w, PJ_ENOMEM); |
| 809 | |
| 810 | pj_list_push_back(&res_hdr_list, w); |
| 811 | |
| 812 | /* Add Accept header to response */ |
| 813 | acc = pjsip_accept_hdr_create(rdata->tp_info.pool); |
| 814 | PJ_ASSERT_RETURN(acc, PJ_ENOMEM); |
| 815 | acc->values[acc->count++] = pj_str("application/sdp"); |
| 816 | pj_list_push_back(&res_hdr_list, acc); |
| 817 | |
| 818 | } |
| 819 | |
| 820 | goto on_return; |
| 821 | } |
| 822 | } |
| 823 | } |
| 824 | |
| 825 | /* Check supported methods, see if peer supports UPDATE. |
| 826 | * We just assume that peer supports standard INVITE, ACK, CANCEL, and BYE |
| 827 | * implicitly by sending this INVITE. |
| 828 | */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 829 | 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] | 830 | if (allow) { |
| 831 | unsigned i; |
| 832 | const pj_str_t STR_UPDATE = { "UPDATE", 6 }; |
| 833 | |
| 834 | for (i=0; i<allow->count; ++i) { |
| 835 | if (pj_stricmp(&allow->values[i], &STR_UPDATE)==0) |
| 836 | break; |
| 837 | } |
| 838 | |
| 839 | if (i != allow->count) { |
| 840 | /* UPDATE is present in Allow */ |
| 841 | rem_option |= PJSIP_INV_SUPPORT_UPDATE; |
| 842 | } |
| 843 | |
| 844 | } |
| 845 | |
| 846 | /* Check Supported header */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 847 | sup_hdr = (pjsip_supported_hdr*) |
| 848 | pjsip_msg_find_hdr(msg, PJSIP_H_SUPPORTED, NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 849 | if (sup_hdr) { |
| 850 | unsigned i; |
| 851 | pj_str_t STR_100REL = { "100rel", 6}; |
| 852 | pj_str_t STR_TIMER = { "timer", 5 }; |
| 853 | |
| 854 | for (i=0; i<sup_hdr->count; ++i) { |
| 855 | if (pj_stricmp(&sup_hdr->values[i], &STR_100REL)==0) |
| 856 | rem_option |= PJSIP_INV_SUPPORT_100REL; |
| 857 | else if (pj_stricmp(&sup_hdr->values[i], &STR_TIMER)==0) |
| 858 | rem_option |= PJSIP_INV_SUPPORT_TIMER; |
| 859 | } |
| 860 | } |
| 861 | |
| 862 | /* Check Require header */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 863 | req_hdr = (pjsip_require_hdr*) |
| 864 | pjsip_msg_find_hdr(msg, PJSIP_H_REQUIRE, NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 865 | if (req_hdr) { |
| 866 | unsigned i; |
Benny Prijono | 053f522 | 2006-11-11 16:16:04 +0000 | [diff] [blame] | 867 | const pj_str_t STR_100REL = { "100rel", 6}; |
| 868 | const pj_str_t STR_TIMER = { "timer", 5 }; |
| 869 | const pj_str_t STR_REPLACES = { "replaces", 8 }; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 870 | unsigned unsupp_cnt = 0; |
| 871 | pj_str_t unsupp_tags[PJSIP_GENERIC_ARRAY_MAX_COUNT]; |
| 872 | |
| 873 | for (i=0; i<req_hdr->count; ++i) { |
| 874 | if ((*options & PJSIP_INV_SUPPORT_100REL) && |
| 875 | pj_stricmp(&req_hdr->values[i], &STR_100REL)==0) |
| 876 | { |
| 877 | rem_option |= PJSIP_INV_REQUIRE_100REL; |
| 878 | |
| 879 | } else if ((*options && PJSIP_INV_SUPPORT_TIMER) && |
| 880 | pj_stricmp(&req_hdr->values[i], &STR_TIMER)==0) |
| 881 | { |
| 882 | rem_option |= PJSIP_INV_REQUIRE_TIMER; |
| 883 | |
Benny Prijono | 053f522 | 2006-11-11 16:16:04 +0000 | [diff] [blame] | 884 | } else if (pj_stricmp(&req_hdr->values[i], &STR_REPLACES)==0) { |
| 885 | pj_bool_t supp; |
| 886 | |
| 887 | supp = pjsip_endpt_has_capability(endpt, PJSIP_H_SUPPORTED, |
| 888 | NULL, &STR_REPLACES); |
| 889 | if (!supp) |
| 890 | unsupp_tags[unsupp_cnt++] = req_hdr->values[i]; |
| 891 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 892 | } else { |
| 893 | /* Unknown/unsupported extension tag! */ |
| 894 | unsupp_tags[unsupp_cnt++] = req_hdr->values[i]; |
| 895 | } |
| 896 | } |
| 897 | |
| 898 | /* Check if there are required tags that we don't support */ |
| 899 | if (unsupp_cnt) { |
| 900 | |
| 901 | code = PJSIP_SC_BAD_EXTENSION; |
| 902 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 903 | |
| 904 | if (p_tdata) { |
| 905 | pjsip_unsupported_hdr *unsupp_hdr; |
| 906 | const pjsip_hdr *h; |
| 907 | |
| 908 | /* Add Unsupported header. */ |
| 909 | unsupp_hdr = pjsip_unsupported_hdr_create(rdata->tp_info.pool); |
| 910 | PJ_ASSERT_RETURN(unsupp_hdr != NULL, PJ_ENOMEM); |
| 911 | |
| 912 | unsupp_hdr->count = unsupp_cnt; |
| 913 | for (i=0; i<unsupp_cnt; ++i) |
| 914 | unsupp_hdr->values[i] = unsupp_tags[i]; |
| 915 | |
| 916 | pj_list_push_back(&res_hdr_list, unsupp_hdr); |
| 917 | |
| 918 | /* Add Supported header. */ |
| 919 | h = pjsip_endpt_get_capability(endpt, PJSIP_H_SUPPORTED, |
| 920 | NULL); |
| 921 | pj_assert(h); |
| 922 | if (h) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 923 | sup_hdr = (pjsip_supported_hdr*) |
| 924 | pjsip_hdr_clone(rdata->tp_info.pool, h); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 925 | pj_list_push_back(&res_hdr_list, sup_hdr); |
| 926 | } |
| 927 | } |
| 928 | |
| 929 | goto on_return; |
| 930 | } |
| 931 | } |
| 932 | |
| 933 | /* Check if there are local requirements that are not supported |
| 934 | * by peer. |
| 935 | */ |
| 936 | if ( ((*options & PJSIP_INV_REQUIRE_100REL)!=0 && |
| 937 | (rem_option & PJSIP_INV_SUPPORT_100REL)==0) || |
| 938 | ((*options & PJSIP_INV_REQUIRE_TIMER)!=0 && |
| 939 | (rem_option & PJSIP_INV_SUPPORT_TIMER)==0)) |
| 940 | { |
| 941 | code = PJSIP_SC_EXTENSION_REQUIRED; |
| 942 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 943 | |
| 944 | if (p_tdata) { |
| 945 | const pjsip_hdr *h; |
| 946 | |
| 947 | /* Add Require header. */ |
| 948 | req_hdr = pjsip_require_hdr_create(rdata->tp_info.pool); |
| 949 | PJ_ASSERT_RETURN(req_hdr != NULL, PJ_ENOMEM); |
| 950 | |
| 951 | if (*options & PJSIP_INV_REQUIRE_100REL) |
| 952 | req_hdr->values[req_hdr->count++] = pj_str("100rel"); |
| 953 | |
| 954 | if (*options & PJSIP_INV_REQUIRE_TIMER) |
| 955 | req_hdr->values[req_hdr->count++] = pj_str("timer"); |
| 956 | |
| 957 | pj_list_push_back(&res_hdr_list, req_hdr); |
| 958 | |
| 959 | /* Add Supported header. */ |
| 960 | h = pjsip_endpt_get_capability(endpt, PJSIP_H_SUPPORTED, |
| 961 | NULL); |
| 962 | pj_assert(h); |
| 963 | if (h) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 964 | sup_hdr = (pjsip_supported_hdr*) |
| 965 | pjsip_hdr_clone(rdata->tp_info.pool, h); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 966 | pj_list_push_back(&res_hdr_list, sup_hdr); |
| 967 | } |
| 968 | |
| 969 | } |
| 970 | |
| 971 | goto on_return; |
| 972 | } |
| 973 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 974 | /* If remote Require something that we support, make us Require |
| 975 | * that feature too. |
| 976 | */ |
| 977 | if (rem_option & PJSIP_INV_REQUIRE_100REL) { |
| 978 | pj_assert(*options & PJSIP_INV_SUPPORT_100REL); |
| 979 | *options |= PJSIP_INV_REQUIRE_100REL; |
| 980 | } |
| 981 | if (rem_option & PJSIP_INV_REQUIRE_TIMER) { |
| 982 | pj_assert(*options & PJSIP_INV_SUPPORT_TIMER); |
| 983 | *options |= PJSIP_INV_REQUIRE_TIMER; |
| 984 | } |
| 985 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 986 | on_return: |
| 987 | |
| 988 | /* Create response if necessary */ |
| 989 | if (code != 200 && p_tdata) { |
| 990 | pjsip_tx_data *tdata; |
| 991 | const pjsip_hdr *h; |
| 992 | |
| 993 | if (dlg) { |
| 994 | status = pjsip_dlg_create_response(dlg, rdata, code, NULL, |
| 995 | &tdata); |
| 996 | } else { |
| 997 | status = pjsip_endpt_create_response(endpt, rdata, code, NULL, |
| 998 | &tdata); |
| 999 | } |
| 1000 | |
| 1001 | if (status != PJ_SUCCESS) |
| 1002 | return status; |
| 1003 | |
| 1004 | /* Add response headers. */ |
| 1005 | h = res_hdr_list.next; |
| 1006 | while (h != &res_hdr_list) { |
| 1007 | pjsip_hdr *cloned; |
| 1008 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1009 | cloned = (pjsip_hdr*) pjsip_hdr_clone(tdata->pool, h); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1010 | PJ_ASSERT_RETURN(cloned, PJ_ENOMEM); |
| 1011 | |
| 1012 | pjsip_msg_add_hdr(tdata->msg, cloned); |
| 1013 | |
| 1014 | h = h->next; |
| 1015 | } |
| 1016 | |
| 1017 | *p_tdata = tdata; |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 1018 | |
| 1019 | /* Can not return PJ_SUCCESS when response message is produced. |
| 1020 | * Ref: PROTOS test ~#2490 |
| 1021 | */ |
| 1022 | if (status == PJ_SUCCESS) |
| 1023 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 1024 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1025 | } |
| 1026 | |
| 1027 | return status; |
| 1028 | } |
| 1029 | |
| 1030 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1031 | * Create UAS invite session. |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1032 | */ |
| 1033 | PJ_DEF(pj_status_t) pjsip_inv_create_uas( pjsip_dialog *dlg, |
| 1034 | pjsip_rx_data *rdata, |
| 1035 | const pjmedia_sdp_session *local_sdp, |
| 1036 | unsigned options, |
| 1037 | pjsip_inv_session **p_inv) |
| 1038 | { |
| 1039 | pjsip_inv_session *inv; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1040 | struct tsx_inv_data *tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1041 | pjsip_msg *msg; |
| 1042 | pjmedia_sdp_session *rem_sdp = NULL; |
| 1043 | pj_status_t status; |
| 1044 | |
| 1045 | /* Verify arguments. */ |
| 1046 | PJ_ASSERT_RETURN(dlg && rdata && p_inv, PJ_EINVAL); |
| 1047 | |
| 1048 | /* Dialog MUST have been initialised. */ |
| 1049 | PJ_ASSERT_RETURN(pjsip_rdata_get_tsx(rdata) != NULL, PJ_EINVALIDOP); |
| 1050 | |
| 1051 | msg = rdata->msg_info.msg; |
| 1052 | |
| 1053 | /* rdata MUST contain INVITE request */ |
| 1054 | PJ_ASSERT_RETURN(msg->type == PJSIP_REQUEST_MSG && |
| 1055 | msg->line.req.method.id == PJSIP_INVITE_METHOD, |
| 1056 | PJ_EINVALIDOP); |
| 1057 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1058 | /* Lock dialog */ |
| 1059 | pjsip_dlg_inc_lock(dlg); |
| 1060 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1061 | /* Normalize options */ |
| 1062 | if (options & PJSIP_INV_REQUIRE_100REL) |
| 1063 | options |= PJSIP_INV_SUPPORT_100REL; |
| 1064 | |
| 1065 | if (options & PJSIP_INV_REQUIRE_TIMER) |
| 1066 | options |= PJSIP_INV_SUPPORT_TIMER; |
| 1067 | |
| 1068 | /* Create the session */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1069 | inv = PJ_POOL_ZALLOC_T(dlg->pool, pjsip_inv_session); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1070 | pj_assert(inv != NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1071 | |
| 1072 | inv->pool = dlg->pool; |
| 1073 | inv->role = PJSIP_ROLE_UAS; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1074 | inv->state = PJSIP_INV_STATE_NULL; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1075 | inv->dlg = dlg; |
| 1076 | inv->options = options; |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1077 | inv->notify = PJ_TRUE; |
Benny Prijono | ba5926a | 2007-05-02 11:29:37 +0000 | [diff] [blame] | 1078 | inv->cause = (pjsip_status_code) 0; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1079 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1080 | /* Object name will use the same dialog pointer. */ |
Benny Prijono | ed811d7 | 2006-03-10 12:57:12 +0000 | [diff] [blame] | 1081 | 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] | 1082 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1083 | /* Parse SDP in message body, if present. */ |
| 1084 | if (msg->body) { |
| 1085 | pjsip_msg_body *body = msg->body; |
| 1086 | |
| 1087 | /* Parse and validate SDP */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1088 | status = pjmedia_sdp_parse(inv->pool, (char*)body->data, body->len, |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1089 | &rem_sdp); |
| 1090 | if (status == PJ_SUCCESS) |
| 1091 | status = pjmedia_sdp_validate(rem_sdp); |
| 1092 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1093 | if (status != PJ_SUCCESS) { |
| 1094 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1095 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1096 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1097 | } |
| 1098 | |
| 1099 | /* Create negotiator. */ |
| 1100 | if (rem_sdp) { |
| 1101 | status = pjmedia_sdp_neg_create_w_remote_offer(inv->pool, local_sdp, |
| 1102 | rem_sdp, &inv->neg); |
| 1103 | |
| 1104 | } else if (local_sdp) { |
| 1105 | status = pjmedia_sdp_neg_create_w_local_offer(inv->pool, local_sdp, |
| 1106 | &inv->neg); |
| 1107 | } else { |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1108 | status = PJ_SUCCESS; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1109 | } |
| 1110 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1111 | if (status != PJ_SUCCESS) { |
| 1112 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1113 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1114 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1115 | |
| 1116 | /* Register invite as dialog usage. */ |
| 1117 | status = pjsip_dlg_add_usage(dlg, &mod_inv.mod, inv); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1118 | if (status != PJ_SUCCESS) { |
| 1119 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1120 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1121 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1122 | |
| 1123 | /* Increment session in the dialog. */ |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1124 | pjsip_dlg_inc_session(dlg, &mod_inv.mod); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1125 | |
| 1126 | /* Save the invite transaction. */ |
| 1127 | inv->invite_tsx = pjsip_rdata_get_tsx(rdata); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1128 | |
| 1129 | /* Attach our data to the transaction. */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1130 | 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] | 1131 | tsx_inv_data->inv = inv; |
| 1132 | inv->invite_tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1133 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1134 | /* Create 100rel handler */ |
| 1135 | if (inv->options & PJSIP_INV_REQUIRE_100REL) { |
| 1136 | pjsip_100rel_attach(inv); |
| 1137 | } |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1138 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1139 | /* Done */ |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 1140 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1141 | *p_inv = inv; |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1142 | |
| 1143 | PJ_LOG(5,(inv->obj_name, "UAS invite session created for dialog %s", |
| 1144 | dlg->obj_name)); |
| 1145 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1146 | return PJ_SUCCESS; |
| 1147 | } |
| 1148 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1149 | /* |
| 1150 | * Forcefully terminate the session. |
| 1151 | */ |
| 1152 | PJ_DEF(pj_status_t) pjsip_inv_terminate( pjsip_inv_session *inv, |
| 1153 | int st_code, |
| 1154 | pj_bool_t notify) |
| 1155 | { |
| 1156 | PJ_ASSERT_RETURN(inv, PJ_EINVAL); |
| 1157 | |
| 1158 | /* Lock dialog. */ |
| 1159 | pjsip_dlg_inc_lock(inv->dlg); |
| 1160 | |
| 1161 | /* Set callback notify flag. */ |
| 1162 | inv->notify = notify; |
| 1163 | |
| 1164 | /* If there's pending transaction, terminate the transaction. |
| 1165 | * This may subsequently set the INVITE session state to |
| 1166 | * disconnected. |
| 1167 | */ |
| 1168 | if (inv->invite_tsx && |
| 1169 | inv->invite_tsx->state <= PJSIP_TSX_STATE_COMPLETED) |
| 1170 | { |
| 1171 | pjsip_tsx_terminate(inv->invite_tsx, st_code); |
| 1172 | |
| 1173 | } |
| 1174 | |
| 1175 | /* Set cause. */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 1176 | inv_set_cause(inv, st_code, NULL); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1177 | |
| 1178 | /* Forcefully terminate the session if state is not DISCONNECTED */ |
| 1179 | if (inv->state != PJSIP_INV_STATE_DISCONNECTED) { |
| 1180 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, NULL); |
| 1181 | } |
| 1182 | |
| 1183 | /* Done. |
| 1184 | * The dec_lock() below will actually destroys the dialog if it |
| 1185 | * has no other session. |
| 1186 | */ |
| 1187 | pjsip_dlg_dec_lock(inv->dlg); |
| 1188 | |
| 1189 | return PJ_SUCCESS; |
| 1190 | } |
| 1191 | |
| 1192 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1193 | static void *clone_sdp(pj_pool_t *pool, const void *data, unsigned len) |
| 1194 | { |
| 1195 | PJ_UNUSED_ARG(len); |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1196 | return pjmedia_sdp_session_clone(pool, (const pjmedia_sdp_session*)data); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1197 | } |
| 1198 | |
| 1199 | static int print_sdp(pjsip_msg_body *body, char *buf, pj_size_t len) |
| 1200 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1201 | return pjmedia_sdp_print((const pjmedia_sdp_session*)body->data, buf, len); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1202 | } |
| 1203 | |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1204 | |
| 1205 | PJ_DEF(pj_status_t) pjsip_create_sdp_body( pj_pool_t *pool, |
| 1206 | pjmedia_sdp_session *sdp, |
| 1207 | pjsip_msg_body **p_body) |
| 1208 | { |
| 1209 | const pj_str_t STR_APPLICATION = { "application", 11}; |
| 1210 | const pj_str_t STR_SDP = { "sdp", 3 }; |
| 1211 | pjsip_msg_body *body; |
| 1212 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1213 | body = PJ_POOL_ZALLOC_T(pool, pjsip_msg_body); |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1214 | PJ_ASSERT_RETURN(body != NULL, PJ_ENOMEM); |
| 1215 | |
| 1216 | body->content_type.type = STR_APPLICATION; |
| 1217 | body->content_type.subtype = STR_SDP; |
| 1218 | body->data = sdp; |
| 1219 | body->len = 0; |
| 1220 | body->clone_data = &clone_sdp; |
| 1221 | body->print_body = &print_sdp; |
| 1222 | |
| 1223 | *p_body = body; |
| 1224 | |
| 1225 | return PJ_SUCCESS; |
| 1226 | } |
| 1227 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1228 | static pjsip_msg_body *create_sdp_body(pj_pool_t *pool, |
| 1229 | const pjmedia_sdp_session *c_sdp) |
| 1230 | { |
| 1231 | pjsip_msg_body *body; |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1232 | pj_status_t status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1233 | |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1234 | status = pjsip_create_sdp_body(pool, |
| 1235 | pjmedia_sdp_session_clone(pool, c_sdp), |
| 1236 | &body); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1237 | |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1238 | if (status != PJ_SUCCESS) |
| 1239 | return NULL; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1240 | |
| 1241 | return body; |
| 1242 | } |
| 1243 | |
| 1244 | /* |
| 1245 | * Create initial INVITE request. |
| 1246 | */ |
| 1247 | PJ_DEF(pj_status_t) pjsip_inv_invite( pjsip_inv_session *inv, |
| 1248 | pjsip_tx_data **p_tdata ) |
| 1249 | { |
| 1250 | pjsip_tx_data *tdata; |
| 1251 | const pjsip_hdr *hdr; |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1252 | pj_bool_t has_sdp; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1253 | pj_status_t status; |
| 1254 | |
| 1255 | /* Verify arguments. */ |
| 1256 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1257 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1258 | /* State MUST be NULL or CONFIRMED. */ |
| 1259 | PJ_ASSERT_RETURN(inv->state == PJSIP_INV_STATE_NULL || |
| 1260 | inv->state == PJSIP_INV_STATE_CONFIRMED, |
| 1261 | PJ_EINVALIDOP); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1262 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1263 | /* Lock dialog. */ |
| 1264 | pjsip_dlg_inc_lock(inv->dlg); |
| 1265 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1266 | /* Create the INVITE request. */ |
Benny Prijono | 1f61a8f | 2007-08-16 10:11:44 +0000 | [diff] [blame] | 1267 | status = pjsip_dlg_create_request(inv->dlg, pjsip_get_invite_method(), -1, |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1268 | &tdata); |
| 1269 | if (status != PJ_SUCCESS) |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1270 | goto on_return; |
| 1271 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1272 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1273 | /* If this is the first INVITE, then copy the headers from inv_hdr. |
| 1274 | * These are the headers parsed from the request URI when the |
| 1275 | * dialog was created. |
| 1276 | */ |
| 1277 | if (inv->state == PJSIP_INV_STATE_NULL) { |
| 1278 | hdr = inv->dlg->inv_hdr.next; |
| 1279 | |
| 1280 | while (hdr != &inv->dlg->inv_hdr) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1281 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1282 | pjsip_hdr_shallow_clone(tdata->pool, hdr)); |
| 1283 | hdr = hdr->next; |
| 1284 | } |
| 1285 | } |
| 1286 | |
| 1287 | /* See if we have SDP to send. */ |
| 1288 | if (inv->neg) { |
| 1289 | pjmedia_sdp_neg_state neg_state; |
| 1290 | |
| 1291 | neg_state = pjmedia_sdp_neg_get_state(inv->neg); |
| 1292 | |
| 1293 | has_sdp = (neg_state == PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER || |
| 1294 | (neg_state == PJMEDIA_SDP_NEG_STATE_WAIT_NEGO && |
| 1295 | pjmedia_sdp_neg_has_local_answer(inv->neg))); |
| 1296 | |
| 1297 | |
| 1298 | } else { |
| 1299 | has_sdp = PJ_FALSE; |
| 1300 | } |
| 1301 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1302 | /* Add SDP, if any. */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1303 | if (has_sdp) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1304 | const pjmedia_sdp_session *offer; |
| 1305 | |
| 1306 | status = pjmedia_sdp_neg_get_neg_local(inv->neg, &offer); |
| 1307 | if (status != PJ_SUCCESS) |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1308 | goto on_return; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1309 | |
| 1310 | tdata->msg->body = create_sdp_body(tdata->pool, offer); |
| 1311 | } |
| 1312 | |
| 1313 | /* Add Allow header. */ |
Benny Prijono | 1f61a8f | 2007-08-16 10:11:44 +0000 | [diff] [blame] | 1314 | if (inv->dlg->add_allow) { |
Benny Prijono | 95673f3 | 2007-06-26 08:23:18 +0000 | [diff] [blame] | 1315 | hdr = pjsip_endpt_get_capability(inv->dlg->endpt, PJSIP_H_ALLOW, NULL); |
| 1316 | if (hdr) { |
| 1317 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) |
| 1318 | pjsip_hdr_shallow_clone(tdata->pool, hdr)); |
| 1319 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1320 | } |
| 1321 | |
| 1322 | /* Add Supported header */ |
| 1323 | hdr = pjsip_endpt_get_capability(inv->dlg->endpt, PJSIP_H_SUPPORTED, NULL); |
| 1324 | if (hdr) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1325 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1326 | pjsip_hdr_shallow_clone(tdata->pool, hdr)); |
| 1327 | } |
| 1328 | |
| 1329 | /* Add Require header. */ |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1330 | if (inv->options & PJSIP_INV_REQUIRE_100REL) { |
| 1331 | const pj_str_t HREQ = { "Require", 7 }; |
| 1332 | const pj_str_t tag_100rel = { "100rel", 6 }; |
| 1333 | pjsip_generic_string_hdr *hreq; |
| 1334 | |
| 1335 | hreq = pjsip_generic_string_hdr_create(tdata->pool, &HREQ, |
| 1336 | &tag_100rel); |
| 1337 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) hreq); |
| 1338 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1339 | |
| 1340 | /* Done. */ |
| 1341 | *p_tdata = tdata; |
| 1342 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1343 | |
| 1344 | on_return: |
| 1345 | pjsip_dlg_dec_lock(inv->dlg); |
| 1346 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1347 | } |
| 1348 | |
| 1349 | |
| 1350 | /* |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 1351 | * Initiate SDP negotiation in the SDP negotiator. |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1352 | */ |
| 1353 | static pj_status_t inv_negotiate_sdp( pjsip_inv_session *inv ) |
| 1354 | { |
| 1355 | pj_status_t status; |
| 1356 | |
| 1357 | PJ_ASSERT_RETURN(pjmedia_sdp_neg_get_state(inv->neg) == |
| 1358 | PJMEDIA_SDP_NEG_STATE_WAIT_NEGO, |
| 1359 | PJMEDIA_SDPNEG_EINSTATE); |
| 1360 | |
| 1361 | status = pjmedia_sdp_neg_negotiate(inv->pool, inv->neg, 0); |
| 1362 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1363 | PJ_LOG(5,(inv->obj_name, "SDP negotiation done, status=%d", status)); |
| 1364 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1365 | if (mod_inv.cb.on_media_update && inv->notify) |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1366 | (*mod_inv.cb.on_media_update)(inv, status); |
| 1367 | |
| 1368 | return status; |
| 1369 | } |
| 1370 | |
| 1371 | /* |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1372 | * Check in incoming message for SDP offer/answer. |
| 1373 | */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1374 | static pj_status_t inv_check_sdp_in_incoming_msg( pjsip_inv_session *inv, |
| 1375 | pjsip_transaction *tsx, |
| 1376 | pjsip_rx_data *rdata) |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1377 | { |
| 1378 | struct tsx_inv_data *tsx_inv_data; |
| 1379 | static const pj_str_t str_application = { "application", 11 }; |
| 1380 | static const pj_str_t str_sdp = { "sdp", 3 }; |
| 1381 | pj_status_t status; |
| 1382 | pjsip_msg *msg; |
| 1383 | pjmedia_sdp_session *sdp; |
| 1384 | |
| 1385 | /* Get/attach invite session's transaction data */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1386 | 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] | 1387 | if (tsx_inv_data == NULL) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1388 | 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] | 1389 | tsx_inv_data->inv = inv; |
| 1390 | tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
| 1391 | } |
| 1392 | |
| 1393 | /* MUST NOT do multiple SDP offer/answer in a single transaction. |
| 1394 | */ |
| 1395 | |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 1396 | if (tsx_inv_data->sdp_done) { |
| 1397 | if (rdata->msg_info.msg->body) { |
| 1398 | PJ_LOG(4,(inv->obj_name, "SDP negotiation done, message " |
| 1399 | "body is ignored")); |
| 1400 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1401 | return PJ_SUCCESS; |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 1402 | } |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1403 | |
| 1404 | /* Check if SDP is present in the message. */ |
| 1405 | |
| 1406 | msg = rdata->msg_info.msg; |
| 1407 | if (msg->body == NULL) { |
| 1408 | /* Message doesn't have body. */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1409 | return PJ_SUCCESS; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1410 | } |
| 1411 | |
| 1412 | if (pj_stricmp(&msg->body->content_type.type, &str_application) || |
| 1413 | pj_stricmp(&msg->body->content_type.subtype, &str_sdp)) |
| 1414 | { |
| 1415 | /* Message body is not "application/sdp" */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1416 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1417 | } |
| 1418 | |
| 1419 | /* Parse the SDP body. */ |
| 1420 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1421 | status = pjmedia_sdp_parse(rdata->tp_info.pool, |
| 1422 | (char*)msg->body->data, |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1423 | msg->body->len, &sdp); |
Benny Prijono | c1b1c0a | 2007-11-06 08:48:02 +0000 | [diff] [blame] | 1424 | if (status == PJ_SUCCESS) |
| 1425 | status = pjmedia_sdp_validate(sdp); |
| 1426 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1427 | if (status != PJ_SUCCESS) { |
| 1428 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 1429 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 1430 | PJ_LOG(4,(THIS_FILE, "Error parsing SDP in %s: %s", |
| 1431 | pjsip_rx_data_get_info(rdata), errmsg)); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1432 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1433 | } |
| 1434 | |
| 1435 | /* The SDP can be an offer or answer, depending on negotiator's state */ |
| 1436 | |
| 1437 | if (inv->neg == NULL || |
| 1438 | pjmedia_sdp_neg_get_state(inv->neg) == PJMEDIA_SDP_NEG_STATE_DONE) |
| 1439 | { |
| 1440 | |
| 1441 | /* This is an offer. */ |
| 1442 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1443 | PJ_LOG(5,(inv->obj_name, "Got SDP offer in %s", |
| 1444 | pjsip_rx_data_get_info(rdata))); |
| 1445 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1446 | if (inv->neg == NULL) { |
| 1447 | status=pjmedia_sdp_neg_create_w_remote_offer(inv->pool, NULL, |
| 1448 | sdp, &inv->neg); |
| 1449 | } else { |
| 1450 | status=pjmedia_sdp_neg_set_remote_offer(inv->pool, inv->neg, sdp); |
| 1451 | } |
| 1452 | |
| 1453 | if (status != PJ_SUCCESS) { |
| 1454 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 1455 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 1456 | PJ_LOG(4,(THIS_FILE, "Error processing SDP offer in %s: %s", |
| 1457 | pjsip_rx_data_get_info(rdata), errmsg)); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1458 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1459 | } |
| 1460 | |
| 1461 | /* Inform application about remote offer. */ |
| 1462 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1463 | if (mod_inv.cb.on_rx_offer && inv->notify) { |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1464 | |
| 1465 | (*mod_inv.cb.on_rx_offer)(inv, sdp); |
| 1466 | |
| 1467 | } |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1468 | |
| 1469 | } else if (pjmedia_sdp_neg_get_state(inv->neg) == |
| 1470 | PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) |
| 1471 | { |
| 1472 | |
| 1473 | /* This is an answer. |
| 1474 | * Process and negotiate remote answer. |
| 1475 | */ |
| 1476 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1477 | PJ_LOG(5,(inv->obj_name, "Got SDP answer in %s", |
| 1478 | pjsip_rx_data_get_info(rdata))); |
| 1479 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1480 | status = pjmedia_sdp_neg_set_remote_answer(inv->pool, inv->neg, sdp); |
| 1481 | |
| 1482 | if (status != PJ_SUCCESS) { |
| 1483 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 1484 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 1485 | PJ_LOG(4,(THIS_FILE, "Error processing SDP answer in %s: %s", |
| 1486 | pjsip_rx_data_get_info(rdata), errmsg)); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1487 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1488 | } |
| 1489 | |
| 1490 | /* Negotiate SDP */ |
| 1491 | |
| 1492 | inv_negotiate_sdp(inv); |
| 1493 | |
| 1494 | /* Mark this transaction has having SDP offer/answer done. */ |
| 1495 | |
| 1496 | tsx_inv_data->sdp_done = 1; |
| 1497 | |
| 1498 | } else { |
| 1499 | |
| 1500 | PJ_LOG(5,(THIS_FILE, "Ignored SDP in %s: negotiator state is %s", |
| 1501 | pjsip_rx_data_get_info(rdata), |
| 1502 | pjmedia_sdp_neg_state_str(pjmedia_sdp_neg_get_state(inv->neg)))); |
| 1503 | } |
| 1504 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1505 | return PJ_SUCCESS; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1506 | } |
| 1507 | |
| 1508 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1509 | /* |
| 1510 | * Process INVITE answer, for both initial and subsequent re-INVITE |
| 1511 | */ |
| 1512 | static pj_status_t process_answer( pjsip_inv_session *inv, |
| 1513 | int st_code, |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1514 | pjsip_tx_data *tdata, |
| 1515 | const pjmedia_sdp_session *local_sdp) |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1516 | { |
| 1517 | pj_status_t status; |
Benny Prijono | ab7399b | 2006-02-27 00:40:31 +0000 | [diff] [blame] | 1518 | const pjmedia_sdp_session *sdp = NULL; |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1519 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1520 | /* If local_sdp is specified, then we MUST NOT have answered the |
| 1521 | * offer before. |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1522 | */ |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1523 | if (local_sdp && (st_code/100==1 || st_code/100==2)) { |
| 1524 | |
| 1525 | if (inv->neg == NULL) { |
| 1526 | status = pjmedia_sdp_neg_create_w_local_offer(inv->pool, local_sdp, |
| 1527 | &inv->neg); |
| 1528 | } else if (pjmedia_sdp_neg_get_state(inv->neg)== |
| 1529 | PJMEDIA_SDP_NEG_STATE_REMOTE_OFFER) |
| 1530 | { |
| 1531 | status = pjmedia_sdp_neg_set_local_answer(inv->pool, inv->neg, |
| 1532 | local_sdp); |
| 1533 | } else { |
| 1534 | |
| 1535 | /* Can not specify local SDP at this state. */ |
| 1536 | pj_assert(0); |
| 1537 | status = PJMEDIA_SDPNEG_EINSTATE; |
| 1538 | } |
| 1539 | |
| 1540 | if (status != PJ_SUCCESS) |
| 1541 | return status; |
| 1542 | |
| 1543 | } |
| 1544 | |
| 1545 | |
| 1546 | /* If SDP negotiator is ready, start negotiation. */ |
| 1547 | if (st_code/100==2 || (st_code/10==18 && st_code!=180)) { |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1548 | |
| 1549 | pjmedia_sdp_neg_state neg_state; |
| 1550 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1551 | /* Start nego when appropriate. */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1552 | neg_state = inv->neg ? pjmedia_sdp_neg_get_state(inv->neg) : |
| 1553 | PJMEDIA_SDP_NEG_STATE_NULL; |
| 1554 | |
| 1555 | if (neg_state == PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) { |
| 1556 | |
| 1557 | status = pjmedia_sdp_neg_get_neg_local(inv->neg, &sdp); |
| 1558 | |
| 1559 | } else if (neg_state == PJMEDIA_SDP_NEG_STATE_WAIT_NEGO && |
| 1560 | pjmedia_sdp_neg_has_local_answer(inv->neg) ) |
| 1561 | { |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 1562 | struct tsx_inv_data *tsx_inv_data; |
| 1563 | |
| 1564 | /* Get invite session's transaction data */ |
| 1565 | tsx_inv_data = (struct tsx_inv_data*) |
| 1566 | inv->invite_tsx->mod_data[mod_inv.mod.id]; |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1567 | |
| 1568 | status = inv_negotiate_sdp(inv); |
| 1569 | if (status != PJ_SUCCESS) |
| 1570 | return status; |
| 1571 | |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 1572 | /* Mark this transaction has having SDP offer/answer done. */ |
| 1573 | tsx_inv_data->sdp_done = 1; |
| 1574 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1575 | status = pjmedia_sdp_neg_get_active_local(inv->neg, &sdp); |
| 1576 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1577 | } |
| 1578 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1579 | /* 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] | 1580 | * Subsequent response will include this SDP. |
Benny Prijono | 48ab2b7 | 2007-11-08 09:24:30 +0000 | [diff] [blame] | 1581 | * |
| 1582 | * Note note: |
| 1583 | * - When offer/answer has been completed in reliable 183, we MUST NOT |
| 1584 | * send SDP in 2xx response. So if we don't have SDP to send, clear |
| 1585 | * the SDP in the message body ONLY if 100rel is active in this |
| 1586 | * session. |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1587 | */ |
| 1588 | if (sdp) { |
| 1589 | tdata->msg->body = create_sdp_body(tdata->pool, sdp); |
Benny Prijono | 48ab2b7 | 2007-11-08 09:24:30 +0000 | [diff] [blame] | 1590 | } else { |
| 1591 | if (inv->options & PJSIP_INV_REQUIRE_100REL) { |
| 1592 | tdata->msg->body = NULL; |
| 1593 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1594 | } |
| 1595 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1596 | |
| 1597 | return PJ_SUCCESS; |
| 1598 | } |
| 1599 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1600 | |
| 1601 | /* |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1602 | * Create first response to INVITE |
| 1603 | */ |
| 1604 | PJ_DEF(pj_status_t) pjsip_inv_initial_answer( pjsip_inv_session *inv, |
| 1605 | pjsip_rx_data *rdata, |
| 1606 | int st_code, |
| 1607 | const pj_str_t *st_text, |
| 1608 | const pjmedia_sdp_session *sdp, |
| 1609 | pjsip_tx_data **p_tdata) |
| 1610 | { |
| 1611 | pjsip_tx_data *tdata; |
| 1612 | pj_status_t status; |
| 1613 | |
| 1614 | /* Verify arguments. */ |
| 1615 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1616 | |
| 1617 | /* Must have INVITE transaction. */ |
| 1618 | PJ_ASSERT_RETURN(inv->invite_tsx, PJ_EBUG); |
| 1619 | |
| 1620 | pjsip_dlg_inc_lock(inv->dlg); |
| 1621 | |
| 1622 | /* Create response */ |
| 1623 | status = pjsip_dlg_create_response(inv->dlg, rdata, st_code, st_text, |
| 1624 | &tdata); |
| 1625 | if (status != PJ_SUCCESS) |
| 1626 | goto on_return; |
| 1627 | |
| 1628 | /* Process SDP in answer */ |
| 1629 | status = process_answer(inv, st_code, tdata, sdp); |
| 1630 | if (status != PJ_SUCCESS) { |
| 1631 | pjsip_tx_data_dec_ref(tdata); |
| 1632 | goto on_return; |
| 1633 | } |
| 1634 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1635 | /* Save this answer */ |
| 1636 | inv->last_answer = tdata; |
| 1637 | pjsip_tx_data_add_ref(inv->last_answer); |
| 1638 | PJ_LOG(5,(inv->dlg->obj_name, "Initial answer %s", |
| 1639 | pjsip_tx_data_get_info(inv->last_answer))); |
| 1640 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1641 | *p_tdata = tdata; |
| 1642 | |
| 1643 | on_return: |
| 1644 | pjsip_dlg_dec_lock(inv->dlg); |
| 1645 | return status; |
| 1646 | } |
| 1647 | |
| 1648 | |
| 1649 | /* |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1650 | * Answer initial INVITE |
| 1651 | * Re-INVITE will be answered automatically, and will not use this function. |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1652 | */ |
| 1653 | PJ_DEF(pj_status_t) pjsip_inv_answer( pjsip_inv_session *inv, |
| 1654 | int st_code, |
| 1655 | const pj_str_t *st_text, |
| 1656 | const pjmedia_sdp_session *local_sdp, |
| 1657 | pjsip_tx_data **p_tdata ) |
| 1658 | { |
| 1659 | pjsip_tx_data *last_res; |
| 1660 | pj_status_t status; |
| 1661 | |
| 1662 | /* Verify arguments. */ |
| 1663 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1664 | |
| 1665 | /* Must have INVITE transaction. */ |
| 1666 | PJ_ASSERT_RETURN(inv->invite_tsx, PJ_EBUG); |
| 1667 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1668 | /* Must have created an answer before */ |
| 1669 | PJ_ASSERT_RETURN(inv->last_answer, PJ_EINVALIDOP); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1670 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1671 | pjsip_dlg_inc_lock(inv->dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1672 | |
| 1673 | /* Modify last response. */ |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1674 | last_res = inv->last_answer; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1675 | status = pjsip_dlg_modify_response(inv->dlg, last_res, st_code, st_text); |
| 1676 | if (status != PJ_SUCCESS) |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1677 | goto on_return; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1678 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 1679 | /* For non-2xx final response, strip message body */ |
| 1680 | if (st_code >= 300) { |
| 1681 | last_res->msg->body = NULL; |
| 1682 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1683 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1684 | /* Process SDP in answer */ |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1685 | status = process_answer(inv, st_code, last_res, local_sdp); |
| 1686 | if (status != PJ_SUCCESS) { |
| 1687 | pjsip_tx_data_dec_ref(last_res); |
| 1688 | goto on_return; |
| 1689 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1690 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1691 | |
| 1692 | *p_tdata = last_res; |
| 1693 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1694 | on_return: |
| 1695 | pjsip_dlg_dec_lock(inv->dlg); |
| 1696 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1697 | } |
| 1698 | |
| 1699 | |
| 1700 | /* |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1701 | * Set SDP answer. |
| 1702 | */ |
| 1703 | PJ_DEF(pj_status_t) pjsip_inv_set_sdp_answer( pjsip_inv_session *inv, |
| 1704 | const pjmedia_sdp_session *sdp ) |
| 1705 | { |
| 1706 | pj_status_t status; |
| 1707 | |
| 1708 | PJ_ASSERT_RETURN(inv && sdp, PJ_EINVAL); |
| 1709 | |
| 1710 | pjsip_dlg_inc_lock(inv->dlg); |
| 1711 | status = pjmedia_sdp_neg_set_local_answer( inv->pool, inv->neg, sdp); |
| 1712 | pjsip_dlg_dec_lock(inv->dlg); |
| 1713 | |
| 1714 | return status; |
| 1715 | } |
| 1716 | |
| 1717 | |
| 1718 | /* |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1719 | * End session. |
| 1720 | */ |
| 1721 | PJ_DEF(pj_status_t) pjsip_inv_end_session( pjsip_inv_session *inv, |
| 1722 | int st_code, |
| 1723 | const pj_str_t *st_text, |
| 1724 | pjsip_tx_data **p_tdata ) |
| 1725 | { |
| 1726 | pjsip_tx_data *tdata; |
| 1727 | pj_status_t status; |
| 1728 | |
| 1729 | /* Verify arguments. */ |
| 1730 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1731 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1732 | /* Set cause code. */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 1733 | inv_set_cause(inv, st_code, st_text); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1734 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1735 | /* Create appropriate message. */ |
| 1736 | switch (inv->state) { |
| 1737 | case PJSIP_INV_STATE_CALLING: |
| 1738 | case PJSIP_INV_STATE_EARLY: |
| 1739 | case PJSIP_INV_STATE_INCOMING: |
| 1740 | |
| 1741 | if (inv->role == PJSIP_ROLE_UAC) { |
| 1742 | |
| 1743 | /* For UAC when session has not been confirmed, create CANCEL. */ |
| 1744 | |
| 1745 | /* MUST have the original UAC INVITE transaction. */ |
| 1746 | PJ_ASSERT_RETURN(inv->invite_tsx != NULL, PJ_EBUG); |
| 1747 | |
| 1748 | /* But CANCEL should only be called when we have received a |
| 1749 | * provisional response. If we haven't received any responses, |
| 1750 | * just destroy the transaction. |
| 1751 | */ |
| 1752 | if (inv->invite_tsx->status_code < 100) { |
| 1753 | |
Benny Prijono | 1dc8be0 | 2007-05-30 04:26:40 +0000 | [diff] [blame] | 1754 | pjsip_tsx_stop_retransmit(inv->invite_tsx); |
| 1755 | inv->cancelling = PJ_TRUE; |
| 1756 | inv->pending_cancel = PJ_TRUE; |
Benny Prijono | fccab71 | 2006-02-22 22:23:22 +0000 | [diff] [blame] | 1757 | *p_tdata = NULL; |
Benny Prijono | 1dc8be0 | 2007-05-30 04:26:40 +0000 | [diff] [blame] | 1758 | PJ_LOG(4, (inv->obj_name, "Stopping retransmission, " |
| 1759 | "delaying CANCEL")); |
Benny Prijono | fccab71 | 2006-02-22 22:23:22 +0000 | [diff] [blame] | 1760 | return PJ_SUCCESS; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1761 | } |
| 1762 | |
| 1763 | /* The CSeq here assumes that the dialog is started with an |
| 1764 | * INVITE session. This may not be correct; dialog can be |
| 1765 | * started as SUBSCRIBE session. |
| 1766 | * So fix this! |
| 1767 | */ |
| 1768 | status = pjsip_endpt_create_cancel(inv->dlg->endpt, |
| 1769 | inv->invite_tsx->last_tx, |
| 1770 | &tdata); |
| 1771 | |
| 1772 | } else { |
| 1773 | |
| 1774 | /* For UAS, send a final response. */ |
| 1775 | tdata = inv->invite_tsx->last_tx; |
| 1776 | PJ_ASSERT_RETURN(tdata != NULL, PJ_EINVALIDOP); |
| 1777 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1778 | //status = pjsip_dlg_modify_response(inv->dlg, tdata, st_code, |
| 1779 | // st_text); |
| 1780 | status = pjsip_inv_answer(inv, st_code, st_text, NULL, &tdata); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1781 | } |
| 1782 | break; |
| 1783 | |
| 1784 | case PJSIP_INV_STATE_CONNECTING: |
| 1785 | case PJSIP_INV_STATE_CONFIRMED: |
| 1786 | /* For established dialog, send BYE */ |
Benny Prijono | 1f61a8f | 2007-08-16 10:11:44 +0000 | [diff] [blame] | 1787 | status = pjsip_dlg_create_request(inv->dlg, pjsip_get_bye_method(), |
| 1788 | -1, &tdata); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1789 | break; |
| 1790 | |
| 1791 | case PJSIP_INV_STATE_DISCONNECTED: |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1792 | /* No need to do anything. */ |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1793 | return PJSIP_ESESSIONTERMINATED; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1794 | |
| 1795 | default: |
| 1796 | pj_assert("!Invalid operation!"); |
| 1797 | return PJ_EINVALIDOP; |
| 1798 | } |
| 1799 | |
| 1800 | if (status != PJ_SUCCESS) |
| 1801 | return status; |
| 1802 | |
| 1803 | |
| 1804 | /* Done */ |
| 1805 | |
Benny Prijono | 0606e70 | 2007-05-22 12:21:40 +0000 | [diff] [blame] | 1806 | inv->cancelling = PJ_TRUE; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1807 | *p_tdata = tdata; |
| 1808 | |
| 1809 | return PJ_SUCCESS; |
| 1810 | } |
| 1811 | |
| 1812 | |
| 1813 | /* |
| 1814 | * Create re-INVITE. |
| 1815 | */ |
| 1816 | PJ_DEF(pj_status_t) pjsip_inv_reinvite( pjsip_inv_session *inv, |
| 1817 | const pj_str_t *new_contact, |
| 1818 | const pjmedia_sdp_session *new_offer, |
| 1819 | pjsip_tx_data **p_tdata ) |
| 1820 | { |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1821 | pj_status_t status; |
| 1822 | pjsip_contact_hdr *contact_hdr = NULL; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1823 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1824 | /* Check arguments. */ |
| 1825 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1826 | |
| 1827 | /* Must NOT have a pending INVITE transaction */ |
Benny Prijono | 2b78782 | 2007-06-12 15:29:52 +0000 | [diff] [blame] | 1828 | if (inv->invite_tsx!=NULL) |
| 1829 | return PJ_EINVALIDOP; |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1830 | |
| 1831 | |
| 1832 | pjsip_dlg_inc_lock(inv->dlg); |
| 1833 | |
| 1834 | if (new_contact) { |
| 1835 | pj_str_t tmp; |
| 1836 | const pj_str_t STR_CONTACT = { "Contact", 7 }; |
| 1837 | |
| 1838 | pj_strdup_with_null(inv->dlg->pool, &tmp, new_contact); |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 1839 | contact_hdr = (pjsip_contact_hdr*) |
| 1840 | pjsip_parse_hdr(inv->dlg->pool, &STR_CONTACT, |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1841 | tmp.ptr, tmp.slen, NULL); |
| 1842 | if (!contact_hdr) { |
| 1843 | status = PJSIP_EINVALIDURI; |
| 1844 | goto on_return; |
| 1845 | } |
| 1846 | } |
| 1847 | |
| 1848 | |
| 1849 | if (new_offer) { |
| 1850 | if (!inv->neg) { |
| 1851 | status = pjmedia_sdp_neg_create_w_local_offer(inv->pool, new_offer, |
| 1852 | &inv->neg); |
| 1853 | if (status != PJ_SUCCESS) |
| 1854 | goto on_return; |
| 1855 | |
| 1856 | } else switch (pjmedia_sdp_neg_get_state(inv->neg)) { |
| 1857 | |
| 1858 | case PJMEDIA_SDP_NEG_STATE_NULL: |
| 1859 | pj_assert(!"Unexpected SDP neg state NULL"); |
| 1860 | status = PJ_EBUG; |
| 1861 | goto on_return; |
| 1862 | |
| 1863 | case PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER: |
| 1864 | PJ_LOG(4,(inv->obj_name, |
| 1865 | "pjsip_inv_reinvite: already have an offer, new " |
| 1866 | "offer is ignored")); |
| 1867 | break; |
| 1868 | |
| 1869 | case PJMEDIA_SDP_NEG_STATE_REMOTE_OFFER: |
| 1870 | status = pjmedia_sdp_neg_set_local_answer(inv->pool, inv->neg, |
| 1871 | new_offer); |
| 1872 | if (status != PJ_SUCCESS) |
| 1873 | goto on_return; |
| 1874 | break; |
| 1875 | |
| 1876 | case PJMEDIA_SDP_NEG_STATE_WAIT_NEGO: |
| 1877 | PJ_LOG(4,(inv->obj_name, |
| 1878 | "pjsip_inv_reinvite: SDP in WAIT_NEGO state, new " |
| 1879 | "offer is ignored")); |
| 1880 | break; |
| 1881 | |
| 1882 | case PJMEDIA_SDP_NEG_STATE_DONE: |
| 1883 | status = pjmedia_sdp_neg_modify_local_offer(inv->pool,inv->neg, |
| 1884 | new_offer); |
| 1885 | if (status != PJ_SUCCESS) |
| 1886 | goto on_return; |
| 1887 | break; |
| 1888 | } |
| 1889 | } |
| 1890 | |
| 1891 | if (contact_hdr) |
| 1892 | inv->dlg->local.contact = contact_hdr; |
| 1893 | |
| 1894 | status = pjsip_inv_invite(inv, p_tdata); |
| 1895 | |
| 1896 | on_return: |
| 1897 | pjsip_dlg_dec_lock(inv->dlg); |
| 1898 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1899 | } |
| 1900 | |
| 1901 | /* |
| 1902 | * Create UPDATE. |
| 1903 | */ |
| 1904 | PJ_DEF(pj_status_t) pjsip_inv_update ( pjsip_inv_session *inv, |
| 1905 | const pj_str_t *new_contact, |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 1906 | const pjmedia_sdp_session *offer, |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1907 | pjsip_tx_data **p_tdata ) |
| 1908 | { |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 1909 | pjsip_contact_hdr *contact_hdr = NULL; |
| 1910 | pjsip_tx_data *tdata = NULL; |
| 1911 | pjmedia_sdp_session *sdp_copy; |
| 1912 | pj_status_t status = PJ_SUCCESS; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1913 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 1914 | /* Verify arguments. */ |
| 1915 | PJ_ASSERT_RETURN(inv && p_tdata && offer, PJ_EINVAL); |
| 1916 | |
| 1917 | /* Dialog must have been established */ |
| 1918 | PJ_ASSERT_RETURN(inv->dlg->state == PJSIP_DIALOG_STATE_ESTABLISHED, |
| 1919 | PJ_EINVALIDOP); |
| 1920 | |
| 1921 | /* Invite session must not have been disconnected */ |
| 1922 | PJ_ASSERT_RETURN(inv->state < PJSIP_INV_STATE_DISCONNECTED, |
| 1923 | PJ_EINVALIDOP); |
| 1924 | |
| 1925 | /* Lock dialog. */ |
| 1926 | pjsip_dlg_inc_lock(inv->dlg); |
| 1927 | |
| 1928 | /* Process offer */ |
| 1929 | if (pjmedia_sdp_neg_get_state(inv->neg)!=PJMEDIA_SDP_NEG_STATE_DONE) { |
| 1930 | PJ_LOG(4,(inv->dlg->obj_name, |
| 1931 | "Invalid SDP offer/answer state for UPDATE")); |
| 1932 | status = PJ_EINVALIDOP; |
| 1933 | goto on_error; |
| 1934 | } |
| 1935 | |
| 1936 | status = pjmedia_sdp_neg_modify_local_offer(inv->pool,inv->neg, |
| 1937 | offer); |
| 1938 | if (status != PJ_SUCCESS) |
| 1939 | goto on_error; |
| 1940 | |
| 1941 | |
| 1942 | /* Update Contact if required */ |
| 1943 | if (new_contact) { |
| 1944 | pj_str_t tmp; |
| 1945 | const pj_str_t STR_CONTACT = { "Contact", 7 }; |
| 1946 | |
| 1947 | pj_strdup_with_null(inv->dlg->pool, &tmp, new_contact); |
| 1948 | contact_hdr = (pjsip_contact_hdr*) |
| 1949 | pjsip_parse_hdr(inv->dlg->pool, &STR_CONTACT, |
| 1950 | tmp.ptr, tmp.slen, NULL); |
| 1951 | if (!contact_hdr) { |
| 1952 | status = PJSIP_EINVALIDURI; |
| 1953 | goto on_error; |
| 1954 | } |
| 1955 | |
| 1956 | inv->dlg->local.contact = contact_hdr; |
| 1957 | } |
| 1958 | |
| 1959 | /* Create request */ |
| 1960 | status = pjsip_dlg_create_request(inv->dlg, &pjsip_update_method, |
| 1961 | -1, &tdata); |
| 1962 | if (status != PJ_SUCCESS) |
| 1963 | goto on_error; |
| 1964 | |
| 1965 | /* Attach SDP body */ |
| 1966 | sdp_copy = pjmedia_sdp_session_clone(tdata->pool, offer); |
| 1967 | pjsip_create_sdp_body(tdata->pool, sdp_copy, &tdata->msg->body); |
| 1968 | |
| 1969 | /* Unlock dialog. */ |
| 1970 | pjsip_dlg_dec_lock(inv->dlg); |
| 1971 | |
| 1972 | *p_tdata = tdata; |
| 1973 | |
| 1974 | return PJ_SUCCESS; |
| 1975 | |
| 1976 | on_error: |
| 1977 | if (tdata) |
| 1978 | pjsip_tx_data_dec_ref(tdata); |
| 1979 | |
| 1980 | /* Unlock dialog. */ |
| 1981 | pjsip_dlg_dec_lock(inv->dlg); |
| 1982 | |
| 1983 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1984 | } |
| 1985 | |
| 1986 | /* |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame^] | 1987 | * Create an ACK request. |
| 1988 | */ |
| 1989 | PJ_DEF(pj_status_t) pjsip_inv_create_ack(pjsip_inv_session *inv, |
| 1990 | int cseq, |
| 1991 | pjsip_tx_data **p_tdata) |
| 1992 | { |
| 1993 | const pjmedia_sdp_session *sdp = NULL; |
| 1994 | pj_status_t status; |
| 1995 | |
| 1996 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1997 | |
| 1998 | /* Lock dialog. */ |
| 1999 | pjsip_dlg_inc_lock(inv->dlg); |
| 2000 | |
| 2001 | /* Destroy last_ack */ |
| 2002 | if (inv->last_ack) { |
| 2003 | pjsip_tx_data_dec_ref(inv->last_ack); |
| 2004 | inv->last_ack = NULL; |
| 2005 | } |
| 2006 | |
| 2007 | /* Create new ACK request */ |
| 2008 | status = pjsip_dlg_create_request(inv->dlg, pjsip_get_ack_method(), |
| 2009 | cseq, &inv->last_ack); |
| 2010 | if (status != PJ_SUCCESS) { |
| 2011 | pjsip_dlg_dec_lock(inv->dlg); |
| 2012 | return status; |
| 2013 | } |
| 2014 | |
| 2015 | /* See if we have pending SDP answer to send */ |
| 2016 | sdp = inv_has_pending_answer(inv, inv->invite_tsx); |
| 2017 | if (sdp) { |
| 2018 | inv->last_ack->msg->body = create_sdp_body(inv->last_ack->pool, sdp); |
| 2019 | } |
| 2020 | |
| 2021 | /* Keep this for subsequent response retransmission */ |
| 2022 | inv->last_ack_cseq = cseq; |
| 2023 | pjsip_tx_data_add_ref(inv->last_ack); |
| 2024 | |
| 2025 | /* Done */ |
| 2026 | *p_tdata = inv->last_ack; |
| 2027 | |
| 2028 | /* Unlock dialog. */ |
| 2029 | pjsip_dlg_dec_lock(inv->dlg); |
| 2030 | |
| 2031 | return PJ_SUCCESS; |
| 2032 | } |
| 2033 | |
| 2034 | /* |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2035 | * Send a request or response message. |
| 2036 | */ |
| 2037 | 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] | 2038 | pjsip_tx_data *tdata) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2039 | { |
| 2040 | pj_status_t status; |
| 2041 | |
| 2042 | /* Verify arguments. */ |
| 2043 | PJ_ASSERT_RETURN(inv && tdata, PJ_EINVAL); |
| 2044 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2045 | PJ_LOG(5,(inv->obj_name, "Sending %s", |
| 2046 | pjsip_tx_data_get_info(tdata))); |
| 2047 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2048 | if (tdata->msg->type == PJSIP_REQUEST_MSG) { |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2049 | struct tsx_inv_data *tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2050 | |
Benny Prijono | 64158af | 2006-04-04 11:06:34 +0000 | [diff] [blame] | 2051 | pjsip_dlg_inc_lock(inv->dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2052 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 2053 | 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] | 2054 | tsx_inv_data->inv = inv; |
| 2055 | |
Benny Prijono | 64158af | 2006-04-04 11:06:34 +0000 | [diff] [blame] | 2056 | pjsip_dlg_dec_lock(inv->dlg); |
| 2057 | |
| 2058 | status = pjsip_dlg_send_request(inv->dlg, tdata, mod_inv.mod.id, |
| 2059 | tsx_inv_data); |
| 2060 | if (status != PJ_SUCCESS) |
| 2061 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2062 | |
| 2063 | } else { |
| 2064 | pjsip_cseq_hdr *cseq; |
| 2065 | |
| 2066 | /* Can only do this to send response to original INVITE |
| 2067 | * request. |
| 2068 | */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 2069 | 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] | 2070 | && (cseq->cseq == inv->invite_tsx->cseq), |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2071 | PJ_EINVALIDOP); |
| 2072 | |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 2073 | if (inv->options & PJSIP_INV_REQUIRE_100REL) { |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2074 | status = pjsip_100rel_tx_response(inv, tdata); |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 2075 | } else |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 2076 | { |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2077 | status = pjsip_dlg_send_response(inv->dlg, inv->invite_tsx, tdata); |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 2078 | } |
| 2079 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2080 | if (status != PJ_SUCCESS) |
| 2081 | return status; |
| 2082 | } |
| 2083 | |
| 2084 | /* Done (?) */ |
| 2085 | return PJ_SUCCESS; |
| 2086 | } |
| 2087 | |
| 2088 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2089 | /* |
| 2090 | * Respond to incoming CANCEL request. |
| 2091 | */ |
| 2092 | static void inv_respond_incoming_cancel(pjsip_inv_session *inv, |
| 2093 | pjsip_transaction *cancel_tsx, |
| 2094 | pjsip_rx_data *rdata) |
| 2095 | { |
| 2096 | pjsip_tx_data *tdata; |
| 2097 | pjsip_transaction *invite_tsx; |
| 2098 | pj_str_t key; |
| 2099 | pj_status_t status; |
| 2100 | |
| 2101 | /* See if we have matching INVITE server transaction: */ |
| 2102 | |
| 2103 | pjsip_tsx_create_key(rdata->tp_info.pool, &key, PJSIP_ROLE_UAS, |
Benny Prijono | 1f61a8f | 2007-08-16 10:11:44 +0000 | [diff] [blame] | 2104 | pjsip_get_invite_method(), rdata); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2105 | invite_tsx = pjsip_tsx_layer_find_tsx(&key, PJ_TRUE); |
| 2106 | |
| 2107 | if (invite_tsx == NULL) { |
| 2108 | |
| 2109 | /* Invite transaction not found! |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2110 | * Respond CANCEL with 481 (RFC 3261 Section 9.2 page 55) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2111 | */ |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2112 | status = pjsip_dlg_create_response( inv->dlg, rdata, 481, NULL, |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2113 | &tdata); |
| 2114 | |
| 2115 | } else { |
| 2116 | /* Always answer CANCEL will 200 (OK) regardless of |
| 2117 | * the state of the INVITE transaction. |
| 2118 | */ |
| 2119 | status = pjsip_dlg_create_response( inv->dlg, rdata, 200, NULL, |
| 2120 | &tdata); |
| 2121 | } |
| 2122 | |
| 2123 | /* See if we have created the response successfully. */ |
| 2124 | if (status != PJ_SUCCESS) return; |
| 2125 | |
| 2126 | /* Send the CANCEL response */ |
| 2127 | status = pjsip_dlg_send_response(inv->dlg, cancel_tsx, tdata); |
| 2128 | if (status != PJ_SUCCESS) return; |
| 2129 | |
| 2130 | |
| 2131 | /* See if we need to terminate the UAS INVITE transaction |
| 2132 | * with 487 (Request Terminated) response. |
| 2133 | */ |
| 2134 | if (invite_tsx && invite_tsx->status_code < 200) { |
| 2135 | |
| 2136 | pj_assert(invite_tsx->last_tx != NULL); |
| 2137 | |
| 2138 | tdata = invite_tsx->last_tx; |
| 2139 | |
| 2140 | status = pjsip_dlg_modify_response(inv->dlg, tdata, 487, NULL); |
Benny Prijono | fc8bb14 | 2007-11-08 09:56:50 +0000 | [diff] [blame] | 2141 | if (status == PJ_SUCCESS) { |
| 2142 | /* Remove the message body */ |
| 2143 | tdata->msg->body = NULL; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2144 | pjsip_dlg_send_response(inv->dlg, invite_tsx, tdata); |
Benny Prijono | fc8bb14 | 2007-11-08 09:56:50 +0000 | [diff] [blame] | 2145 | } |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2146 | } |
| 2147 | |
| 2148 | if (invite_tsx) |
| 2149 | pj_mutex_unlock(invite_tsx->mutex); |
| 2150 | } |
| 2151 | |
| 2152 | |
| 2153 | /* |
| 2154 | * Respond to incoming BYE request. |
| 2155 | */ |
| 2156 | static void inv_respond_incoming_bye( pjsip_inv_session *inv, |
| 2157 | pjsip_transaction *bye_tsx, |
| 2158 | pjsip_rx_data *rdata, |
| 2159 | pjsip_event *e ) |
| 2160 | { |
| 2161 | pj_status_t status; |
| 2162 | pjsip_tx_data *tdata; |
| 2163 | |
| 2164 | /* Respond BYE with 200: */ |
| 2165 | |
| 2166 | status = pjsip_dlg_create_response(inv->dlg, rdata, 200, NULL, &tdata); |
| 2167 | if (status != PJ_SUCCESS) return; |
| 2168 | |
| 2169 | status = pjsip_dlg_send_response(inv->dlg, bye_tsx, tdata); |
| 2170 | if (status != PJ_SUCCESS) return; |
| 2171 | |
| 2172 | /* Terminate session: */ |
| 2173 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2174 | if (inv->state != PJSIP_INV_STATE_DISCONNECTED) { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2175 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2176 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2177 | } |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2178 | } |
| 2179 | |
| 2180 | /* |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2181 | * Respond to BYE request. |
| 2182 | */ |
| 2183 | static void inv_handle_bye_response( pjsip_inv_session *inv, |
| 2184 | pjsip_transaction *tsx, |
| 2185 | pjsip_rx_data *rdata, |
| 2186 | pjsip_event *e ) |
| 2187 | { |
| 2188 | pj_status_t status; |
| 2189 | |
| 2190 | if (e->body.tsx_state.type != PJSIP_EVENT_RX_MSG) { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2191 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2192 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2193 | return; |
| 2194 | } |
| 2195 | |
| 2196 | /* Handle 401/407 challenge. */ |
| 2197 | if (tsx->status_code == 401 || tsx->status_code == 407) { |
| 2198 | |
| 2199 | pjsip_tx_data *tdata; |
| 2200 | |
| 2201 | status = pjsip_auth_clt_reinit_req( &inv->dlg->auth_sess, |
| 2202 | rdata, |
| 2203 | tsx->last_tx, |
| 2204 | &tdata); |
| 2205 | |
| 2206 | if (status != PJ_SUCCESS) { |
| 2207 | |
| 2208 | /* Does not have proper credentials. |
| 2209 | * End the session anyway. |
| 2210 | */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2211 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2212 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2213 | |
| 2214 | } else { |
| 2215 | /* Re-send BYE. */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 2216 | status = pjsip_inv_send_msg(inv, tdata); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2217 | } |
| 2218 | |
| 2219 | } else { |
| 2220 | |
| 2221 | /* End the session. */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2222 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2223 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2224 | } |
| 2225 | |
| 2226 | } |
| 2227 | |
| 2228 | /* |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2229 | * Respond to incoming UPDATE request. |
| 2230 | */ |
| 2231 | static void inv_respond_incoming_update(pjsip_inv_session *inv, |
| 2232 | pjsip_rx_data *rdata) |
| 2233 | { |
| 2234 | pjmedia_sdp_neg_state neg_state; |
| 2235 | pj_status_t status; |
| 2236 | pjsip_tx_data *tdata = NULL; |
| 2237 | |
| 2238 | neg_state = pjmedia_sdp_neg_get_state(inv->neg); |
| 2239 | |
| 2240 | /* Send 491 if we receive UPDATE while we're waiting for an answer */ |
| 2241 | if (neg_state == PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) { |
| 2242 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 2243 | PJSIP_SC_REQUEST_PENDING, NULL, |
| 2244 | &tdata); |
| 2245 | } |
| 2246 | /* Send 500 with Retry-After header set randomly between 0 and 10 if we |
| 2247 | * receive UPDATE while we haven't sent answer. |
| 2248 | */ |
| 2249 | else if (neg_state == PJMEDIA_SDP_NEG_STATE_REMOTE_OFFER || |
| 2250 | neg_state == PJMEDIA_SDP_NEG_STATE_WAIT_NEGO) { |
| 2251 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 2252 | PJSIP_SC_INTERNAL_SERVER_ERROR, |
| 2253 | NULL, &tdata); |
| 2254 | |
Benny Prijono | c5cbc05 | 2007-11-08 09:44:08 +0000 | [diff] [blame] | 2255 | /* If UPDATE doesn't contain SDP, just respond with 200/OK. |
| 2256 | * This is a valid scenario according to session-timer draft. |
| 2257 | */ |
| 2258 | } else if (rdata->msg_info.msg->body == NULL) { |
| 2259 | |
| 2260 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 2261 | 200, NULL, &tdata); |
| 2262 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2263 | } else { |
| 2264 | /* We receive new offer from remote */ |
| 2265 | inv_check_sdp_in_incoming_msg(inv, pjsip_rdata_get_tsx(rdata), rdata); |
| 2266 | |
| 2267 | /* Application MUST have supplied the answer by now. |
| 2268 | * If so, negotiate the SDP. |
| 2269 | */ |
| 2270 | neg_state = pjmedia_sdp_neg_get_state(inv->neg); |
| 2271 | if (neg_state != PJMEDIA_SDP_NEG_STATE_WAIT_NEGO || |
| 2272 | (status=inv_negotiate_sdp(inv)) != PJ_SUCCESS) |
| 2273 | { |
| 2274 | /* Negotiation has failed */ |
| 2275 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 2276 | PJSIP_SC_NOT_ACCEPTABLE_HERE, |
| 2277 | NULL, &tdata); |
| 2278 | } else { |
| 2279 | /* New media has been negotiated successfully, send 200/OK */ |
| 2280 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 2281 | PJSIP_SC_OK, NULL, &tdata); |
| 2282 | if (status == PJ_SUCCESS) { |
Benny Prijono | 9569a0b | 2007-10-04 15:35:26 +0000 | [diff] [blame] | 2283 | const pjmedia_sdp_session *sdp; |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2284 | status = pjmedia_sdp_neg_get_active_local(inv->neg, &sdp); |
| 2285 | if (status == PJ_SUCCESS) |
| 2286 | tdata->msg->body = create_sdp_body(tdata->pool, sdp); |
| 2287 | } |
| 2288 | } |
| 2289 | } |
| 2290 | |
| 2291 | if (status != PJ_SUCCESS) { |
| 2292 | if (tdata != NULL) { |
| 2293 | pjsip_tx_data_dec_ref(tdata); |
| 2294 | tdata = NULL; |
| 2295 | } |
| 2296 | return; |
| 2297 | } |
| 2298 | |
| 2299 | pjsip_dlg_send_response(inv->dlg, pjsip_rdata_get_tsx(rdata), tdata); |
| 2300 | } |
| 2301 | |
| 2302 | |
| 2303 | /* |
| 2304 | * Handle incoming response to UAC UPDATE request. |
| 2305 | */ |
| 2306 | static void inv_handle_update_response( pjsip_inv_session *inv, |
| 2307 | pjsip_event *e) |
| 2308 | { |
| 2309 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2310 | struct tsx_inv_data *tsx_inv_data = NULL; |
| 2311 | pj_status_t status = -1; |
| 2312 | |
Benny Prijono | 48ab2b7 | 2007-11-08 09:24:30 +0000 | [diff] [blame] | 2313 | /* Handle 401/407 challenge. */ |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2314 | if (tsx->state == PJSIP_TSX_STATE_COMPLETED && |
Benny Prijono | 48ab2b7 | 2007-11-08 09:24:30 +0000 | [diff] [blame] | 2315 | (tsx->status_code == 401 || tsx->status_code == 407)) { |
| 2316 | |
| 2317 | pjsip_tx_data *tdata; |
| 2318 | |
| 2319 | status = pjsip_auth_clt_reinit_req( &inv->dlg->auth_sess, |
| 2320 | e->body.tsx_state.src.rdata, |
| 2321 | tsx->last_tx, |
| 2322 | &tdata); |
| 2323 | |
| 2324 | if (status != PJ_SUCCESS) { |
| 2325 | |
| 2326 | /* Does not have proper credentials. |
| 2327 | * End the session anyway. |
| 2328 | */ |
| 2329 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
| 2330 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2331 | |
| 2332 | } else { |
| 2333 | /* Re-send BYE. */ |
| 2334 | status = pjsip_inv_send_msg(inv, tdata); |
| 2335 | } |
| 2336 | |
| 2337 | /* Process 2xx response */ |
| 2338 | } else if (tsx->state == PJSIP_TSX_STATE_COMPLETED && |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2339 | tsx->status_code/100 == 2 && |
| 2340 | e->body.tsx_state.src.rdata->msg_info.msg->body) |
| 2341 | { |
| 2342 | status = inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2343 | e->body.tsx_state.src.rdata); |
| 2344 | |
| 2345 | } else { |
| 2346 | /* Get/attach invite session's transaction data */ |
| 2347 | tsx_inv_data = (struct tsx_inv_data*)tsx->mod_data[mod_inv.mod.id]; |
| 2348 | if (tsx_inv_data == NULL) { |
| 2349 | tsx_inv_data=PJ_POOL_ZALLOC_T(tsx->pool, struct tsx_inv_data); |
| 2350 | tsx_inv_data->inv = inv; |
| 2351 | tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
| 2352 | } |
| 2353 | } |
| 2354 | |
| 2355 | /* Otherwise if we don't get successful response, cancel |
| 2356 | * our negotiator. |
| 2357 | */ |
| 2358 | if (status != PJ_SUCCESS && |
| 2359 | pjmedia_sdp_neg_get_state(inv->neg)==PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER && |
| 2360 | tsx_inv_data && tsx_inv_data->sdp_done == PJ_FALSE) |
| 2361 | { |
| 2362 | pjmedia_sdp_neg_cancel_offer(inv->neg); |
| 2363 | |
| 2364 | /* Prevent from us cancelling different offer! */ |
| 2365 | tsx_inv_data->sdp_done = PJ_TRUE; |
| 2366 | } |
| 2367 | } |
| 2368 | |
| 2369 | |
| 2370 | /* |
| 2371 | * Handle incoming reliable response. |
| 2372 | */ |
| 2373 | static void inv_handle_incoming_reliable_response(pjsip_inv_session *inv, |
| 2374 | pjsip_rx_data *rdata) |
| 2375 | { |
| 2376 | pjsip_tx_data *tdata; |
Benny Prijono | 9569a0b | 2007-10-04 15:35:26 +0000 | [diff] [blame] | 2377 | const pjmedia_sdp_session *sdp; |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2378 | pj_status_t status; |
| 2379 | |
| 2380 | /* Create PRACK */ |
| 2381 | status = pjsip_100rel_create_prack(inv, rdata, &tdata); |
| 2382 | if (status != PJ_SUCCESS) |
| 2383 | return; |
| 2384 | |
| 2385 | /* See if we need to attach SDP answer on the PRACK request */ |
| 2386 | sdp = inv_has_pending_answer(inv, pjsip_rdata_get_tsx(rdata)); |
| 2387 | if (sdp) { |
| 2388 | tdata->msg->body = create_sdp_body(tdata->pool, sdp); |
| 2389 | } |
| 2390 | |
| 2391 | /* Send PRACK (must be using 100rel module!) */ |
| 2392 | pjsip_100rel_send_prack(inv, tdata); |
| 2393 | } |
| 2394 | |
| 2395 | |
| 2396 | /* |
| 2397 | * Handle incoming PRACK. |
| 2398 | */ |
| 2399 | static void inv_respond_incoming_prack(pjsip_inv_session *inv, |
| 2400 | pjsip_rx_data *rdata) |
| 2401 | { |
| 2402 | pj_status_t status; |
| 2403 | |
| 2404 | /* Run through 100rel module to see if we can accept this |
| 2405 | * PRACK request. The 100rel will send 200/OK to PRACK request. |
| 2406 | */ |
| 2407 | status = pjsip_100rel_on_rx_prack(inv, rdata); |
| 2408 | if (status != PJ_SUCCESS) |
| 2409 | return; |
| 2410 | |
| 2411 | /* Now check for SDP answer in the PRACK request */ |
| 2412 | if (rdata->msg_info.msg->body) { |
| 2413 | status = inv_check_sdp_in_incoming_msg(inv, |
| 2414 | pjsip_rdata_get_tsx(rdata), rdata); |
| 2415 | } else { |
| 2416 | /* No SDP body */ |
| 2417 | status = -1; |
| 2418 | } |
| 2419 | |
| 2420 | /* If SDP negotiation has been successful, also mark the |
| 2421 | * SDP negotiation flag in the invite transaction to be |
| 2422 | * done too. |
| 2423 | */ |
| 2424 | if (status == PJ_SUCCESS && inv->invite_tsx) { |
| 2425 | struct tsx_inv_data *tsx_inv_data; |
| 2426 | |
| 2427 | /* Get/attach invite session's transaction data */ |
| 2428 | tsx_inv_data = (struct tsx_inv_data*) |
| 2429 | inv->invite_tsx->mod_data[mod_inv.mod.id]; |
| 2430 | if (tsx_inv_data == NULL) { |
| 2431 | tsx_inv_data = PJ_POOL_ZALLOC_T(inv->invite_tsx->pool, |
| 2432 | struct tsx_inv_data); |
| 2433 | tsx_inv_data->inv = inv; |
| 2434 | inv->invite_tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
| 2435 | } |
| 2436 | |
| 2437 | tsx_inv_data->sdp_done = PJ_TRUE; |
| 2438 | } |
| 2439 | } |
| 2440 | |
| 2441 | |
| 2442 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2443 | * State NULL is before anything is sent/received. |
| 2444 | */ |
| 2445 | 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] | 2446 | { |
| 2447 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2448 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2449 | |
| 2450 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2451 | |
| 2452 | if (tsx->method.id == PJSIP_INVITE_METHOD) { |
| 2453 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2454 | /* Keep the initial INVITE transaction. */ |
| 2455 | if (inv->invite_tsx == NULL) |
| 2456 | inv->invite_tsx = tsx; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2457 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2458 | if (dlg->role == PJSIP_ROLE_UAC) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2459 | |
| 2460 | switch (tsx->state) { |
| 2461 | case PJSIP_TSX_STATE_CALLING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2462 | inv_set_state(inv, PJSIP_INV_STATE_CALLING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2463 | break; |
| 2464 | default: |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2465 | inv_on_state_calling(inv, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2466 | break; |
| 2467 | } |
| 2468 | |
| 2469 | } else { |
| 2470 | switch (tsx->state) { |
| 2471 | case PJSIP_TSX_STATE_TRYING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2472 | inv_set_state(inv, PJSIP_INV_STATE_INCOMING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2473 | break; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2474 | case PJSIP_TSX_STATE_PROCEEDING: |
| 2475 | inv_set_state(inv, PJSIP_INV_STATE_INCOMING, e); |
| 2476 | if (tsx->status_code > 100) |
| 2477 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
| 2478 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2479 | default: |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2480 | inv_on_state_incoming(inv, e); |
| 2481 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2482 | } |
| 2483 | } |
| 2484 | |
| 2485 | } else { |
| 2486 | pj_assert(!"Unexpected transaction type"); |
| 2487 | } |
| 2488 | } |
| 2489 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2490 | /* |
| 2491 | * State CALLING is after sending initial INVITE request but before |
| 2492 | * any response (with tag) is received. |
| 2493 | */ |
| 2494 | 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] | 2495 | { |
| 2496 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2497 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2498 | pj_status_t status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2499 | |
| 2500 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2501 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2502 | if (tsx == inv->invite_tsx) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2503 | |
| 2504 | switch (tsx->state) { |
| 2505 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2506 | case PJSIP_TSX_STATE_CALLING: |
| 2507 | inv_set_state(inv, PJSIP_INV_STATE_CALLING, e); |
| 2508 | break; |
| 2509 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2510 | case PJSIP_TSX_STATE_PROCEEDING: |
Benny Prijono | 1dc8be0 | 2007-05-30 04:26:40 +0000 | [diff] [blame] | 2511 | if (inv->pending_cancel) { |
| 2512 | pjsip_tx_data *cancel; |
| 2513 | |
| 2514 | inv->pending_cancel = PJ_FALSE; |
| 2515 | |
| 2516 | status = pjsip_inv_end_session(inv, 487, NULL, &cancel); |
| 2517 | if (status == PJ_SUCCESS && cancel) |
| 2518 | status = pjsip_inv_send_msg(inv, cancel); |
| 2519 | } |
| 2520 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2521 | if (dlg->remote.info->tag.slen) { |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2522 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2523 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2524 | |
| 2525 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2526 | e->body.tsx_state.src.rdata); |
| 2527 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2528 | if (pjsip_100rel_is_reliable(e->body.tsx_state.src.rdata)) { |
| 2529 | inv_handle_incoming_reliable_response( |
| 2530 | inv, e->body.tsx_state.src.rdata); |
| 2531 | } |
| 2532 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2533 | } else { |
| 2534 | /* Ignore 100 (Trying) response, as it doesn't change |
| 2535 | * session state. It only ceases retransmissions. |
| 2536 | */ |
| 2537 | } |
| 2538 | break; |
| 2539 | |
| 2540 | case PJSIP_TSX_STATE_COMPLETED: |
| 2541 | if (tsx->status_code/100 == 2) { |
| 2542 | |
| 2543 | /* This should not happen. |
| 2544 | * When transaction receives 2xx, it should be terminated |
| 2545 | */ |
| 2546 | pj_assert(0); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2547 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2548 | |
| 2549 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2550 | e->body.tsx_state.src.rdata); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2551 | |
Benny Prijono | 0606e70 | 2007-05-22 12:21:40 +0000 | [diff] [blame] | 2552 | } else if ((tsx->status_code==401 || tsx->status_code==407) && |
| 2553 | !inv->cancelling) |
| 2554 | { |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2555 | |
| 2556 | /* Handle authentication failure: |
| 2557 | * Resend the request with Authorization header. |
| 2558 | */ |
| 2559 | pjsip_tx_data *tdata; |
| 2560 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2561 | status = pjsip_auth_clt_reinit_req(&inv->dlg->auth_sess, |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2562 | e->body.tsx_state.src.rdata, |
| 2563 | tsx->last_tx, |
| 2564 | &tdata); |
| 2565 | |
| 2566 | if (status != PJ_SUCCESS) { |
| 2567 | |
| 2568 | /* Does not have proper credentials. |
| 2569 | * End the session. |
| 2570 | */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2571 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2572 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2573 | |
| 2574 | } else { |
| 2575 | |
| 2576 | /* Restart session. */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2577 | inv->state = PJSIP_INV_STATE_NULL; |
| 2578 | inv->invite_tsx = NULL; |
Benny Prijono | dcfc0ba | 2007-09-30 16:50:27 +0000 | [diff] [blame] | 2579 | if (inv->last_answer) { |
| 2580 | pjsip_tx_data_dec_ref(inv->last_answer); |
| 2581 | inv->last_answer = NULL; |
| 2582 | } |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2583 | |
| 2584 | /* Send the request. */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 2585 | status = pjsip_inv_send_msg(inv, tdata); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2586 | } |
| 2587 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2588 | } else { |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2589 | |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2590 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2591 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2592 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2593 | } |
| 2594 | break; |
| 2595 | |
| 2596 | case PJSIP_TSX_STATE_TERMINATED: |
| 2597 | /* INVITE transaction can be terminated either because UAC |
| 2598 | * transaction received 2xx response or because of transport |
| 2599 | * error. |
| 2600 | */ |
| 2601 | if (tsx->status_code/100 == 2) { |
| 2602 | /* This must be receipt of 2xx response */ |
| 2603 | |
| 2604 | /* Set state to CONNECTING */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2605 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2606 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2607 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2608 | e->body.tsx_state.src.rdata); |
| 2609 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2610 | /* Send ACK */ |
| 2611 | pj_assert(e->body.tsx_state.type == PJSIP_EVENT_RX_MSG); |
| 2612 | |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame^] | 2613 | inv_send_ack(inv, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2614 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2615 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2616 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2617 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2618 | } |
| 2619 | break; |
| 2620 | |
Benny Prijono | 34a404e | 2006-02-09 14:38:30 +0000 | [diff] [blame] | 2621 | default: |
| 2622 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2623 | } |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2624 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2625 | } else if (tsx->role == PJSIP_ROLE_UAC) { |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2626 | /* |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2627 | * Handle case when outgoing request is answered with 481 (Call/ |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2628 | * Transaction Does Not Exist), 408, or when it's timed out. In these |
| 2629 | * cases, disconnect session (i.e. dialog usage only). |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2630 | * Note that 481 response to CANCEL does not terminate dialog usage, |
| 2631 | * but only the transaction. |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2632 | */ |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2633 | if ((tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST && |
| 2634 | tsx->method.id != PJSIP_CANCEL_METHOD) || |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2635 | tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT || |
| 2636 | tsx->status_code == PJSIP_SC_TSX_TIMEOUT || |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2637 | tsx->status_code == PJSIP_SC_TSX_TRANSPORT_ERROR) |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2638 | { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2639 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2640 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2641 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2642 | } |
| 2643 | } |
| 2644 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2645 | /* |
| 2646 | * State INCOMING is after we received the request, but before |
| 2647 | * responses with tag are sent. |
| 2648 | */ |
| 2649 | 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] | 2650 | { |
| 2651 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2652 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2653 | |
| 2654 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2655 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2656 | if (tsx == inv->invite_tsx) { |
| 2657 | |
| 2658 | /* |
| 2659 | * Handle the INVITE state transition. |
| 2660 | */ |
| 2661 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2662 | switch (tsx->state) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2663 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2664 | case PJSIP_TSX_STATE_TRYING: |
| 2665 | inv_set_state(inv, PJSIP_INV_STATE_INCOMING, e); |
| 2666 | break; |
| 2667 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2668 | case PJSIP_TSX_STATE_PROCEEDING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2669 | /* |
| 2670 | * Transaction sent provisional response. |
| 2671 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2672 | if (tsx->status_code > 100) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2673 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2674 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2675 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2676 | case PJSIP_TSX_STATE_COMPLETED: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2677 | /* |
| 2678 | * Transaction sent final response. |
| 2679 | */ |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2680 | if (tsx->status_code/100 == 2) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2681 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2682 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2683 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2684 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2685 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2686 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2687 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2688 | case PJSIP_TSX_STATE_TERMINATED: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2689 | /* |
| 2690 | * This happens on transport error (e.g. failed to send |
| 2691 | * response) |
| 2692 | */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2693 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2694 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2695 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2696 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2697 | default: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2698 | pj_assert(!"Unexpected INVITE state"); |
| 2699 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2700 | } |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2701 | |
| 2702 | } else if (tsx->method.id == PJSIP_CANCEL_METHOD && |
| 2703 | tsx->role == PJSIP_ROLE_UAS && |
| 2704 | tsx->state < PJSIP_TSX_STATE_COMPLETED && |
| 2705 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG ) |
| 2706 | { |
| 2707 | |
| 2708 | /* |
| 2709 | * Handle incoming CANCEL request. |
| 2710 | */ |
| 2711 | |
| 2712 | inv_respond_incoming_cancel(inv, tsx, e->body.tsx_state.src.rdata); |
| 2713 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2714 | } |
| 2715 | } |
| 2716 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2717 | /* |
| 2718 | * State EARLY is for both UAS and UAC, after response with To tag |
| 2719 | * is sent/received. |
| 2720 | */ |
| 2721 | 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] | 2722 | { |
| 2723 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2724 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2725 | |
| 2726 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2727 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2728 | if (tsx == inv->invite_tsx) { |
| 2729 | |
| 2730 | /* |
| 2731 | * Handle the INVITE state progress. |
| 2732 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2733 | |
| 2734 | switch (tsx->state) { |
| 2735 | |
| 2736 | case PJSIP_TSX_STATE_PROCEEDING: |
| 2737 | /* Send/received another provisional response. */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2738 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2739 | |
| 2740 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 2741 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2742 | e->body.tsx_state.src.rdata); |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2743 | |
| 2744 | if (pjsip_100rel_is_reliable(e->body.tsx_state.src.rdata)) { |
| 2745 | inv_handle_incoming_reliable_response( |
| 2746 | inv, e->body.tsx_state.src.rdata); |
| 2747 | } |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2748 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2749 | break; |
| 2750 | |
| 2751 | case PJSIP_TSX_STATE_COMPLETED: |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2752 | if (tsx->status_code/100 == 2) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2753 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2754 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 2755 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2756 | e->body.tsx_state.src.rdata); |
| 2757 | } |
| 2758 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2759 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2760 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2761 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2762 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2763 | break; |
| 2764 | |
Benny Prijono | f319507 | 2006-02-14 21:15:30 +0000 | [diff] [blame] | 2765 | case PJSIP_TSX_STATE_CONFIRMED: |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 2766 | /* For some reason can go here (maybe when ACK for 2xx has |
| 2767 | * the same branch value as the INVITE transaction) */ |
Benny Prijono | f319507 | 2006-02-14 21:15:30 +0000 | [diff] [blame] | 2768 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2769 | case PJSIP_TSX_STATE_TERMINATED: |
| 2770 | /* INVITE transaction can be terminated either because UAC |
| 2771 | * transaction received 2xx response or because of transport |
| 2772 | * error. |
| 2773 | */ |
| 2774 | if (tsx->status_code/100 == 2) { |
| 2775 | |
| 2776 | /* This must be receipt of 2xx response */ |
| 2777 | |
| 2778 | /* Set state to CONNECTING */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2779 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2780 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2781 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 2782 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2783 | e->body.tsx_state.src.rdata); |
| 2784 | } |
| 2785 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2786 | /* if UAC, send ACK and move state to confirmed. */ |
| 2787 | if (tsx->role == PJSIP_ROLE_UAC) { |
| 2788 | pj_assert(e->body.tsx_state.type == PJSIP_EVENT_RX_MSG); |
| 2789 | |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame^] | 2790 | inv_send_ack(inv, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2791 | } |
| 2792 | |
| 2793 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2794 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2795 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2796 | } |
| 2797 | break; |
| 2798 | |
| 2799 | default: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2800 | pj_assert(!"Unexpected INVITE tsx state"); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2801 | } |
| 2802 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2803 | } else if (inv->role == PJSIP_ROLE_UAS && |
| 2804 | tsx->role == PJSIP_ROLE_UAS && |
| 2805 | tsx->method.id == PJSIP_CANCEL_METHOD && |
| 2806 | tsx->state < PJSIP_TSX_STATE_COMPLETED && |
| 2807 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG ) |
| 2808 | { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2809 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2810 | /* |
| 2811 | * Handle incoming CANCEL request. |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2812 | */ |
| 2813 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2814 | inv_respond_incoming_cancel(inv, tsx, e->body.tsx_state.src.rdata); |
| 2815 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2816 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 2817 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 2818 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2819 | { |
| 2820 | /* |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2821 | * Handle incoming UPDATE |
| 2822 | */ |
| 2823 | inv_respond_incoming_update(inv, e->body.tsx_state.src.rdata); |
| 2824 | |
| 2825 | |
| 2826 | } else if (tsx->role == PJSIP_ROLE_UAC && |
| 2827 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 2828 | tsx->state == PJSIP_TSX_STATE_TERMINATED) && |
| 2829 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
| 2830 | { |
| 2831 | /* |
| 2832 | * Handle response to outgoing UPDATE request. |
| 2833 | */ |
| 2834 | inv_handle_update_response(inv, e); |
| 2835 | |
| 2836 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 2837 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 2838 | pjsip_method_cmp(&tsx->method, &pjsip_prack_method)==0) |
| 2839 | { |
| 2840 | /* |
| 2841 | * Handle incoming PRACK |
| 2842 | */ |
| 2843 | inv_respond_incoming_prack(inv, e->body.tsx_state.src.rdata); |
| 2844 | |
| 2845 | } else if (tsx->role == PJSIP_ROLE_UAC) { |
| 2846 | /* |
| 2847 | * Handle case when outgoing request is answered with 481 (Call/ |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2848 | * Transaction Does Not Exist), 408, or when it's timed out. In these |
| 2849 | * cases, disconnect session (i.e. dialog usage only). |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2850 | * Note that 481 response to CANCEL does not terminate dialog usage, |
| 2851 | * but only the transaction. |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2852 | */ |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2853 | if ((tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST && |
| 2854 | tsx->method.id != PJSIP_CANCEL_METHOD) || |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2855 | tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT || |
| 2856 | tsx->status_code == PJSIP_SC_TSX_TIMEOUT || |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2857 | tsx->status_code == PJSIP_SC_TSX_TRANSPORT_ERROR) |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2858 | { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2859 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2860 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2861 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2862 | } |
| 2863 | } |
| 2864 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2865 | /* |
| 2866 | * State CONNECTING is after 2xx response to INVITE is sent/received. |
| 2867 | */ |
| 2868 | 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] | 2869 | { |
| 2870 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2871 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2872 | |
| 2873 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2874 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2875 | if (tsx == inv->invite_tsx) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2876 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2877 | /* |
| 2878 | * Handle INVITE state progression. |
| 2879 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2880 | switch (tsx->state) { |
| 2881 | |
| 2882 | case PJSIP_TSX_STATE_CONFIRMED: |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 2883 | /* It can only go here if incoming ACK request has the same Via |
| 2884 | * branch parameter as the INVITE transaction. |
| 2885 | */ |
| 2886 | if (tsx->status_code/100 == 2) { |
| 2887 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 2888 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2889 | e->body.tsx_state.src.rdata); |
| 2890 | } |
| 2891 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2892 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, e); |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 2893 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2894 | break; |
| 2895 | |
| 2896 | case PJSIP_TSX_STATE_TERMINATED: |
| 2897 | /* INVITE transaction can be terminated either because UAC |
| 2898 | * transaction received 2xx response or because of transport |
| 2899 | * error. |
| 2900 | */ |
| 2901 | if (tsx->status_code/100 != 2) { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2902 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2903 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2904 | } |
| 2905 | break; |
| 2906 | |
| 2907 | case PJSIP_TSX_STATE_DESTROYED: |
| 2908 | /* Do nothing. */ |
| 2909 | break; |
| 2910 | |
| 2911 | default: |
| 2912 | pj_assert(!"Unexpected state"); |
| 2913 | } |
| 2914 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2915 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 2916 | tsx->method.id == PJSIP_BYE_METHOD && |
| 2917 | tsx->status_code < 200 && |
| 2918 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 2919 | { |
| 2920 | |
| 2921 | /* |
| 2922 | * Handle incoming BYE. |
| 2923 | */ |
| 2924 | |
| 2925 | inv_respond_incoming_bye( inv, tsx, e->body.tsx_state.src.rdata, e ); |
| 2926 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2927 | } else if (tsx->method.id == PJSIP_BYE_METHOD && |
| 2928 | tsx->role == PJSIP_ROLE_UAC && |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2929 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 2930 | tsx->state == PJSIP_TSX_STATE_TERMINATED)) |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2931 | { |
| 2932 | |
| 2933 | /* |
| 2934 | * Outgoing BYE |
| 2935 | */ |
| 2936 | inv_handle_bye_response( inv, tsx, e->body.tsx_state.src.rdata, e); |
| 2937 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2938 | } |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 2939 | else if (tsx->method.id == PJSIP_CANCEL_METHOD && |
| 2940 | tsx->role == PJSIP_ROLE_UAS && |
| 2941 | tsx->status_code < 200 && |
| 2942 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 2943 | { |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2944 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 2945 | /* |
| 2946 | * Handle strandled incoming CANCEL. |
| 2947 | */ |
| 2948 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
| 2949 | pjsip_tx_data *tdata; |
| 2950 | pj_status_t status; |
| 2951 | |
| 2952 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 2953 | if (status != PJ_SUCCESS) return; |
| 2954 | |
| 2955 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 2956 | if (status != PJ_SUCCESS) return; |
| 2957 | |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2958 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 2959 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 2960 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
| 2961 | { |
| 2962 | /* |
| 2963 | * Handle incoming UPDATE |
| 2964 | */ |
| 2965 | inv_respond_incoming_update(inv, e->body.tsx_state.src.rdata); |
| 2966 | |
| 2967 | |
| 2968 | } else if (tsx->role == PJSIP_ROLE_UAC && |
| 2969 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 2970 | tsx->state == PJSIP_TSX_STATE_TERMINATED) && |
| 2971 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
| 2972 | { |
| 2973 | /* |
| 2974 | * Handle response to outgoing UPDATE request. |
| 2975 | */ |
| 2976 | inv_handle_update_response(inv, e); |
| 2977 | |
| 2978 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 2979 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 2980 | pjsip_method_cmp(&tsx->method, &pjsip_prack_method)==0) |
| 2981 | { |
| 2982 | /* |
| 2983 | * Handle incoming PRACK |
| 2984 | */ |
| 2985 | inv_respond_incoming_prack(inv, e->body.tsx_state.src.rdata); |
| 2986 | |
| 2987 | } else if (tsx->role == PJSIP_ROLE_UAC) { |
| 2988 | /* |
| 2989 | * Handle case when outgoing request is answered with 481 (Call/ |
| 2990 | * Transaction Does Not Exist), 408, or when it's timed out. In these |
| 2991 | * cases, disconnect session (i.e. dialog usage only). |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2992 | * Note that 481 response to CANCEL does not terminate dialog usage, |
| 2993 | * but only the transaction. |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2994 | */ |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 2995 | if ((tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST && |
| 2996 | tsx->method.id != PJSIP_CANCEL_METHOD) || |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 2997 | tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT || |
| 2998 | tsx->status_code == PJSIP_SC_TSX_TIMEOUT || |
| 2999 | tsx->status_code == PJSIP_SC_TSX_TRANSPORT_ERROR) |
| 3000 | { |
| 3001 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
| 3002 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 3003 | } |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3004 | } |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3005 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3006 | } |
| 3007 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3008 | /* |
| 3009 | * State CONFIRMED is after ACK is sent/received. |
| 3010 | */ |
| 3011 | 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] | 3012 | { |
| 3013 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 3014 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 3015 | |
| 3016 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 3017 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3018 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3019 | if (tsx->method.id == PJSIP_BYE_METHOD && |
| 3020 | tsx->role == PJSIP_ROLE_UAC && |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 3021 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 3022 | tsx->state == PJSIP_TSX_STATE_TERMINATED)) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3023 | { |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 3024 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3025 | /* |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 3026 | * Outgoing BYE |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3027 | */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3028 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 3029 | 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] | 3030 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3031 | } |
| 3032 | else if (tsx->method.id == PJSIP_BYE_METHOD && |
| 3033 | tsx->role == PJSIP_ROLE_UAS && |
| 3034 | tsx->status_code < 200 && |
| 3035 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 3036 | { |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 3037 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3038 | /* |
| 3039 | * Handle incoming BYE. |
| 3040 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3041 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3042 | inv_respond_incoming_bye( inv, tsx, e->body.tsx_state.src.rdata, e ); |
| 3043 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3044 | } |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3045 | else if (tsx->method.id == PJSIP_CANCEL_METHOD && |
| 3046 | tsx->role == PJSIP_ROLE_UAS && |
| 3047 | tsx->status_code < 200 && |
| 3048 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 3049 | { |
| 3050 | |
| 3051 | /* |
| 3052 | * Handle strandled incoming CANCEL. |
| 3053 | */ |
| 3054 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
| 3055 | pjsip_tx_data *tdata; |
| 3056 | pj_status_t status; |
| 3057 | |
| 3058 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 3059 | if (status != PJ_SUCCESS) return; |
| 3060 | |
| 3061 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 3062 | if (status != PJ_SUCCESS) return; |
| 3063 | |
| 3064 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3065 | else if (tsx->method.id == PJSIP_INVITE_METHOD && |
| 3066 | tsx->role == PJSIP_ROLE_UAS) |
| 3067 | { |
| 3068 | |
| 3069 | /* |
| 3070 | * Handle incoming re-INVITE |
| 3071 | */ |
| 3072 | if (tsx->state == PJSIP_TSX_STATE_TRYING) { |
| 3073 | |
| 3074 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
| 3075 | pjsip_tx_data *tdata; |
| 3076 | pj_status_t status; |
| 3077 | |
| 3078 | /* Check if we have INVITE pending. */ |
| 3079 | if (inv->invite_tsx && inv->invite_tsx!=tsx) { |
Benny Prijono | 4624994 | 2007-02-19 22:23:14 +0000 | [diff] [blame] | 3080 | pj_str_t reason; |
| 3081 | |
| 3082 | reason = pj_str("Another INVITE transaction in progress"); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3083 | |
| 3084 | /* Can not receive re-INVITE while another one is pending. */ |
Benny Prijono | 4624994 | 2007-02-19 22:23:14 +0000 | [diff] [blame] | 3085 | status = pjsip_dlg_create_response( inv->dlg, rdata, 500, |
| 3086 | &reason, &tdata); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3087 | if (status != PJ_SUCCESS) |
| 3088 | return; |
| 3089 | |
| 3090 | status = pjsip_dlg_send_response( inv->dlg, tsx, tdata); |
| 3091 | |
| 3092 | |
| 3093 | return; |
| 3094 | } |
| 3095 | |
| 3096 | /* Save the invite transaction. */ |
| 3097 | inv->invite_tsx = tsx; |
| 3098 | |
| 3099 | /* Process SDP in incoming message. */ |
| 3100 | status = inv_check_sdp_in_incoming_msg(inv, tsx, rdata); |
| 3101 | |
| 3102 | if (status != PJ_SUCCESS) { |
| 3103 | |
| 3104 | /* Not Acceptable */ |
| 3105 | const pjsip_hdr *accept; |
| 3106 | |
| 3107 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 3108 | 488, NULL, &tdata); |
| 3109 | if (status != PJ_SUCCESS) |
| 3110 | return; |
| 3111 | |
| 3112 | |
| 3113 | accept = pjsip_endpt_get_capability(dlg->endpt, PJSIP_H_ACCEPT, |
| 3114 | NULL); |
| 3115 | if (accept) { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 3116 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3117 | pjsip_hdr_clone(tdata->pool, accept)); |
| 3118 | } |
| 3119 | |
| 3120 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 3121 | |
| 3122 | return; |
| 3123 | } |
| 3124 | |
| 3125 | /* Create 2xx ANSWER */ |
| 3126 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 3127 | if (status != PJ_SUCCESS) |
| 3128 | return; |
| 3129 | |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 3130 | /* If the INVITE request has SDP body, send answer. |
| 3131 | * Otherwise generate offer from local active SDP. |
| 3132 | */ |
| 3133 | if (rdata->msg_info.msg->body != NULL) { |
| 3134 | status = process_answer(inv, 200, tdata, NULL); |
| 3135 | } else { |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 3136 | /* INVITE does not have SDP. |
| 3137 | * If on_create_offer() callback is implemented, ask app. |
| 3138 | * to generate an offer, otherwise just send active local |
| 3139 | * SDP to signal that nothing gets modified. |
| 3140 | */ |
| 3141 | pjmedia_sdp_session *sdp = NULL; |
| 3142 | |
| 3143 | if (mod_inv.cb.on_create_offer) { |
| 3144 | (*mod_inv.cb.on_create_offer)(inv, &sdp); |
| 3145 | if (sdp) { |
| 3146 | status = pjmedia_sdp_neg_modify_local_offer(dlg->pool, |
| 3147 | inv->neg, |
| 3148 | sdp); |
| 3149 | } |
| 3150 | } |
| 3151 | |
| 3152 | if (sdp == NULL) { |
| 3153 | const pjmedia_sdp_session *active_sdp = NULL; |
| 3154 | status = pjmedia_sdp_neg_send_local_offer(dlg->pool, |
| 3155 | inv->neg, |
| 3156 | &active_sdp); |
| 3157 | if (status == PJ_SUCCESS) |
| 3158 | sdp = (pjmedia_sdp_session*) active_sdp; |
| 3159 | } |
| 3160 | |
| 3161 | if (sdp) { |
| 3162 | tdata->msg->body = create_sdp_body(tdata->pool, sdp); |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 3163 | } |
| 3164 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3165 | |
Benny Prijono | 1d9b9a4 | 2006-09-25 13:40:12 +0000 | [diff] [blame] | 3166 | if (status != PJ_SUCCESS) { |
| 3167 | /* |
| 3168 | * SDP negotiation has failed. |
| 3169 | */ |
| 3170 | pj_status_t rc; |
| 3171 | pj_str_t reason; |
| 3172 | |
| 3173 | /* Delete the 2xx answer */ |
| 3174 | pjsip_tx_data_dec_ref(tdata); |
| 3175 | |
| 3176 | /* Create 500 response */ |
| 3177 | reason = pj_str("SDP negotiation failed"); |
| 3178 | rc = pjsip_dlg_create_response(dlg, rdata, 500, &reason, |
| 3179 | &tdata); |
| 3180 | if (rc == PJ_SUCCESS) { |
| 3181 | pjsip_warning_hdr *w; |
| 3182 | const pj_str_t *endpt_name; |
| 3183 | |
| 3184 | endpt_name = pjsip_endpt_name(dlg->endpt); |
| 3185 | w = pjsip_warning_hdr_create_from_status(tdata->pool, |
| 3186 | endpt_name, |
| 3187 | status); |
| 3188 | if (w) |
| 3189 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)w); |
| 3190 | |
| 3191 | pjsip_inv_send_msg(inv, tdata); |
| 3192 | } |
| 3193 | return; |
| 3194 | } |
| 3195 | |
| 3196 | /* Send 2xx regardless of the status of negotiation */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 3197 | status = pjsip_inv_send_msg(inv, tdata); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3198 | |
Benny Prijono | 7d91009 | 2007-06-20 04:19:46 +0000 | [diff] [blame] | 3199 | } else if (tsx->state == PJSIP_TSX_STATE_CONFIRMED) { |
| 3200 | /* This is the case where ACK has the same branch as |
| 3201 | * the INVITE request. |
| 3202 | */ |
| 3203 | if (tsx->status_code/100 == 2 && |
| 3204 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 3205 | { |
| 3206 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 3207 | e->body.tsx_state.src.rdata); |
| 3208 | } |
| 3209 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3210 | } |
| 3211 | |
| 3212 | } |
| 3213 | else if (tsx->method.id == PJSIP_INVITE_METHOD && |
| 3214 | tsx->role == PJSIP_ROLE_UAC) |
| 3215 | { |
| 3216 | /* |
| 3217 | * Handle outgoing re-INVITE |
| 3218 | */ |
| 3219 | if (tsx->state == PJSIP_TSX_STATE_TERMINATED && |
| 3220 | tsx->status_code/100 == 2) |
| 3221 | { |
| 3222 | |
| 3223 | /* Re-INVITE was accepted. */ |
| 3224 | |
| 3225 | /* Process SDP */ |
| 3226 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 3227 | e->body.tsx_state.src.rdata); |
| 3228 | |
| 3229 | /* Send ACK */ |
Benny Prijono | d5f9f42 | 2007-11-25 04:40:07 +0000 | [diff] [blame^] | 3230 | inv_send_ack(inv, e); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3231 | |
| 3232 | } else if (tsx->state == PJSIP_TSX_STATE_COMPLETED && |
| 3233 | (tsx->status_code==401 || tsx->status_code==407)) |
| 3234 | { |
| 3235 | pjsip_tx_data *tdata; |
| 3236 | pj_status_t status; |
| 3237 | |
| 3238 | /* Handle authentication challenge. */ |
| 3239 | status = pjsip_auth_clt_reinit_req( &dlg->auth_sess, |
| 3240 | e->body.tsx_state.src.rdata, |
| 3241 | tsx->last_tx, |
| 3242 | &tdata); |
| 3243 | if (status != PJ_SUCCESS) |
| 3244 | return; |
| 3245 | |
| 3246 | /* Send re-INVITE */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 3247 | status = pjsip_inv_send_msg( inv, tdata); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3248 | |
| 3249 | } else if (tsx->status_code==PJSIP_SC_CALL_TSX_DOES_NOT_EXIST || |
| 3250 | tsx->status_code==PJSIP_SC_REQUEST_TIMEOUT || |
| 3251 | tsx->status_code >= 700) |
| 3252 | { |
| 3253 | /* |
| 3254 | * Handle responses that terminates dialog. |
| 3255 | */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 3256 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3257 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 77998ce | 2007-06-20 10:03:46 +0000 | [diff] [blame] | 3258 | |
| 3259 | } else if (tsx->status_code >= 300 && tsx->status_code < 700) { |
| 3260 | |
| 3261 | pjmedia_sdp_neg_state neg_state; |
| 3262 | |
| 3263 | /* Outgoing INVITE transaction has failed, cancel SDP nego */ |
| 3264 | neg_state = pjmedia_sdp_neg_get_state(inv->neg); |
| 3265 | if (neg_state == PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) { |
| 3266 | pjmedia_sdp_neg_cancel_offer(inv->neg); |
| 3267 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3268 | } |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3269 | |
| 3270 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 3271 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 3272 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
| 3273 | { |
| 3274 | /* |
| 3275 | * Handle incoming UPDATE |
| 3276 | */ |
| 3277 | inv_respond_incoming_update(inv, e->body.tsx_state.src.rdata); |
| 3278 | |
| 3279 | } else if (tsx->role == PJSIP_ROLE_UAC && |
| 3280 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 3281 | tsx->state == PJSIP_TSX_STATE_TERMINATED) && |
| 3282 | pjsip_method_cmp(&tsx->method, &pjsip_update_method)==0) |
| 3283 | { |
| 3284 | /* |
| 3285 | * Handle response to outgoing UPDATE request. |
| 3286 | */ |
| 3287 | inv_handle_update_response(inv, e); |
| 3288 | |
| 3289 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 3290 | tsx->state == PJSIP_TSX_STATE_TRYING && |
| 3291 | pjsip_method_cmp(&tsx->method, &pjsip_prack_method)==0) |
| 3292 | { |
| 3293 | /* |
| 3294 | * Handle strandled incoming PRACK |
| 3295 | */ |
| 3296 | inv_respond_incoming_prack(inv, e->body.tsx_state.src.rdata); |
| 3297 | |
| 3298 | } else if (tsx->role == PJSIP_ROLE_UAC) { |
| 3299 | /* |
| 3300 | * Handle case when outgoing request is answered with 481 (Call/ |
| 3301 | * Transaction Does Not Exist), 408, or when it's timed out. In these |
| 3302 | * cases, disconnect session (i.e. dialog usage only). |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 3303 | * Note that 481 response to CANCEL does not terminate dialog usage, |
| 3304 | * but only the transaction. |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3305 | */ |
Benny Prijono | c514576 | 2007-11-23 12:04:40 +0000 | [diff] [blame] | 3306 | if ((tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST && |
| 3307 | tsx->method.id != PJSIP_CANCEL_METHOD) || |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3308 | tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT || |
| 3309 | tsx->status_code == PJSIP_SC_TSX_TIMEOUT || |
| 3310 | tsx->status_code == PJSIP_SC_TSX_TRANSPORT_ERROR) |
| 3311 | { |
| 3312 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
| 3313 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 3314 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 3315 | } |
Benny Prijono | 1f7767b | 2007-10-03 18:28:49 +0000 | [diff] [blame] | 3316 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3317 | } |
| 3318 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3319 | /* |
| 3320 | * After session has been terminated, but before dialog is destroyed |
| 3321 | * (because dialog has other usages, or because dialog is waiting for |
| 3322 | * the last transaction to terminate). |
| 3323 | */ |
| 3324 | 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] | 3325 | { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3326 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 3327 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3328 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3329 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 3330 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3331 | if (tsx->role == PJSIP_ROLE_UAS && |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3332 | tsx->status_code < 200 && |
| 3333 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 3334 | { |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3335 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3336 | |
| 3337 | /* |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3338 | * Respond BYE with 200/OK |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3339 | */ |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3340 | if (tsx->method.id == PJSIP_BYE_METHOD) { |
| 3341 | inv_respond_incoming_bye( inv, tsx, rdata, e ); |
| 3342 | } else if (tsx->method.id == PJSIP_CANCEL_METHOD) { |
| 3343 | /* |
| 3344 | * Respond CANCEL with 200/OK too. |
| 3345 | */ |
| 3346 | pjsip_tx_data *tdata; |
| 3347 | pj_status_t status; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3348 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3349 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 3350 | if (status != PJ_SUCCESS) return; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3351 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 3352 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 3353 | if (status != PJ_SUCCESS) return; |
| 3354 | |
| 3355 | } |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 3356 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 3357 | } |
| 3358 | |