Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2003-2006 Benny Prijono <benny@prijono.org> |
| 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> |
| 20 | #include <pjsip/sip_module.h> |
| 21 | #include <pjsip/sip_endpoint.h> |
| 22 | #include <pjsip/sip_event.h> |
| 23 | #include <pjsip/sip_transaction.h> |
| 24 | #include <pjmedia/sdp.h> |
| 25 | #include <pjmedia/sdp_neg.h> |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 26 | #include <pjmedia/errno.h> |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 27 | #include <pj/string.h> |
| 28 | #include <pj/pool.h> |
| 29 | #include <pj/assert.h> |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 30 | #include <pj/os.h> |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 31 | #include <pj/log.h> |
| 32 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 33 | |
| 34 | #define THIS_FILE "sip_invite_session.c" |
| 35 | |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 36 | static const char *inv_state_names[] = |
| 37 | { |
Benny Prijono | 4be63b5 | 2006-11-25 14:50:25 +0000 | [diff] [blame] | 38 | "NULL", |
| 39 | "CALLING", |
| 40 | "INCOMING", |
| 41 | "EARLY", |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 42 | "CONNECTING", |
| 43 | "CONFIRMED ", |
| 44 | "DISCONNCTD", |
| 45 | "TERMINATED", |
| 46 | }; |
| 47 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 48 | /* |
| 49 | * Static prototypes. |
| 50 | */ |
| 51 | static pj_status_t mod_inv_load(pjsip_endpoint *endpt); |
| 52 | static pj_status_t mod_inv_unload(void); |
| 53 | static pj_bool_t mod_inv_on_rx_request(pjsip_rx_data *rdata); |
| 54 | static pj_bool_t mod_inv_on_rx_response(pjsip_rx_data *rdata); |
| 55 | static void mod_inv_on_tsx_state(pjsip_transaction*, pjsip_event*); |
| 56 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 57 | static void inv_on_state_null( pjsip_inv_session *inv, pjsip_event *e); |
| 58 | static void inv_on_state_calling( pjsip_inv_session *inv, pjsip_event *e); |
| 59 | static void inv_on_state_incoming( pjsip_inv_session *inv, pjsip_event *e); |
| 60 | static void inv_on_state_early( pjsip_inv_session *inv, pjsip_event *e); |
| 61 | static void inv_on_state_connecting( pjsip_inv_session *inv, pjsip_event *e); |
| 62 | static void inv_on_state_confirmed( pjsip_inv_session *inv, pjsip_event *e); |
| 63 | 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] | 64 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 65 | static void (*inv_state_handler[])( pjsip_inv_session *inv, pjsip_event *e) = |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 66 | { |
| 67 | &inv_on_state_null, |
| 68 | &inv_on_state_calling, |
| 69 | &inv_on_state_incoming, |
| 70 | &inv_on_state_early, |
| 71 | &inv_on_state_connecting, |
| 72 | &inv_on_state_confirmed, |
| 73 | &inv_on_state_disconnected, |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 74 | }; |
| 75 | |
| 76 | static struct mod_inv |
| 77 | { |
| 78 | pjsip_module mod; |
| 79 | pjsip_endpoint *endpt; |
| 80 | pjsip_inv_callback cb; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 81 | } mod_inv = |
| 82 | { |
| 83 | { |
Benny Prijono | 2f8992b | 2006-02-25 21:16:36 +0000 | [diff] [blame] | 84 | NULL, NULL, /* prev, next. */ |
| 85 | { "mod-invite", 10 }, /* Name. */ |
| 86 | -1, /* Id */ |
| 87 | PJSIP_MOD_PRIORITY_DIALOG_USAGE, /* Priority */ |
| 88 | &mod_inv_load, /* load() */ |
| 89 | NULL, /* start() */ |
| 90 | NULL, /* stop() */ |
| 91 | &mod_inv_unload, /* unload() */ |
| 92 | &mod_inv_on_rx_request, /* on_rx_request() */ |
| 93 | &mod_inv_on_rx_response, /* on_rx_response() */ |
| 94 | NULL, /* on_tx_request. */ |
| 95 | NULL, /* on_tx_response() */ |
| 96 | &mod_inv_on_tsx_state, /* on_tsx_state() */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 97 | } |
| 98 | }; |
| 99 | |
| 100 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 101 | /* Invite session data to be attached to transaction. */ |
| 102 | struct tsx_inv_data |
| 103 | { |
| 104 | pjsip_inv_session *inv; |
| 105 | pj_bool_t sdp_done; |
| 106 | }; |
| 107 | |
| 108 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 109 | /* |
| 110 | * Module load() |
| 111 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 112 | static pj_status_t mod_inv_load(pjsip_endpoint *endpt) |
| 113 | { |
| 114 | pj_str_t allowed[] = {{"INVITE", 6}, {"ACK",3}, {"BYE",3}, {"CANCEL",6}}; |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 115 | pj_str_t accepted = { "application/sdp", 15 }; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 116 | |
| 117 | /* Register supported methods: INVITE, ACK, BYE, CANCEL */ |
| 118 | pjsip_endpt_add_capability(endpt, &mod_inv.mod, PJSIP_H_ALLOW, NULL, |
| 119 | PJ_ARRAY_SIZE(allowed), allowed); |
| 120 | |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 121 | /* Register "application/sdp" in Accept header */ |
| 122 | pjsip_endpt_add_capability(endpt, &mod_inv.mod, PJSIP_H_ACCEPT, NULL, |
| 123 | 1, &accepted); |
| 124 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 125 | return PJ_SUCCESS; |
| 126 | } |
| 127 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 128 | /* |
| 129 | * Module unload() |
| 130 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 131 | static pj_status_t mod_inv_unload(void) |
| 132 | { |
| 133 | /* Should remove capability here */ |
| 134 | return PJ_SUCCESS; |
| 135 | } |
| 136 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 137 | /* |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 138 | * Set session state. |
| 139 | */ |
| 140 | void inv_set_state(pjsip_inv_session *inv, pjsip_inv_state state, |
| 141 | pjsip_event *e) |
| 142 | { |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 143 | pjsip_inv_state prev_state = inv->state; |
| 144 | |
| 145 | /* Set state. */ |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 146 | inv->state = state; |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 147 | |
| 148 | /* If state is DISCONNECTED, cause code MUST have been set. */ |
| 149 | pj_assert(inv->state != PJSIP_INV_STATE_DISCONNECTED || |
| 150 | inv->cause != 0); |
| 151 | |
| 152 | /* Call on_state_changed() callback. */ |
| 153 | if (mod_inv.cb.on_state_changed && inv->notify) |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 154 | (*mod_inv.cb.on_state_changed)(inv, e); |
| 155 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 156 | /* Only decrement when previous state is not already DISCONNECTED */ |
| 157 | if (inv->state == PJSIP_INV_STATE_DISCONNECTED && |
| 158 | prev_state != PJSIP_INV_STATE_DISCONNECTED) |
| 159 | { |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 160 | pjsip_dlg_dec_session(inv->dlg, &mod_inv.mod); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 161 | } |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | |
| 165 | /* |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 166 | * Set cause code. |
| 167 | */ |
| 168 | void inv_set_cause(pjsip_inv_session *inv, int cause_code, |
| 169 | const pj_str_t *cause_text) |
| 170 | { |
| 171 | if (cause_code > inv->cause) { |
| 172 | inv->cause = cause_code; |
| 173 | if (cause_text) |
| 174 | pj_strdup(inv->pool, &inv->cause_text, cause_text); |
| 175 | else if (cause_code/100 == 2) |
| 176 | inv->cause_text = pj_str("Normal call clearing"); |
| 177 | else |
| 178 | inv->cause_text = *pjsip_get_status_text(cause_code); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | |
| 183 | |
| 184 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 185 | * Send ACK for 2xx response. |
| 186 | */ |
| 187 | static pj_status_t inv_send_ack(pjsip_inv_session *inv, pjsip_rx_data *rdata) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 188 | { |
| 189 | pjsip_tx_data *tdata; |
| 190 | pj_status_t status; |
| 191 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 192 | PJ_LOG(5,(inv->obj_name, "Received %s, sending ACK", |
| 193 | pjsip_rx_data_get_info(rdata))); |
| 194 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 195 | status = pjsip_dlg_create_request(inv->dlg, &pjsip_ack_method, |
| 196 | rdata->msg_info.cseq->cseq, &tdata); |
| 197 | if (status != PJ_SUCCESS) { |
| 198 | /* Better luck next time */ |
| 199 | pj_assert(!"Unable to create ACK!"); |
| 200 | return status; |
| 201 | } |
| 202 | |
Benny Prijono | 64158af | 2006-04-04 11:06:34 +0000 | [diff] [blame] | 203 | status = pjsip_dlg_send_request(inv->dlg, tdata, -1, NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 204 | if (status != PJ_SUCCESS) { |
| 205 | /* Better luck next time */ |
| 206 | pj_assert(!"Unable to send ACK!"); |
| 207 | return status; |
| 208 | } |
| 209 | |
| 210 | return PJ_SUCCESS; |
| 211 | } |
| 212 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 213 | /* |
| 214 | * Module on_rx_request() |
| 215 | * |
| 216 | * This callback is called for these events: |
| 217 | * - endpoint receives request which was unhandled by higher priority |
| 218 | * modules (e.g. transaction layer, dialog layer). |
| 219 | * - dialog distributes incoming request to its usages. |
| 220 | */ |
| 221 | static pj_bool_t mod_inv_on_rx_request(pjsip_rx_data *rdata) |
| 222 | { |
| 223 | pjsip_method *method; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 224 | pjsip_dialog *dlg; |
| 225 | pjsip_inv_session *inv; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 226 | |
| 227 | /* Only wants to receive request from a dialog. */ |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 228 | dlg = pjsip_rdata_get_dlg(rdata); |
| 229 | if (dlg == NULL) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 230 | return PJ_FALSE; |
| 231 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 232 | inv = dlg->mod_data[mod_inv.mod.id]; |
| 233 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 234 | /* Report to dialog that we handle INVITE, CANCEL, BYE, ACK. |
| 235 | * If we need to send response, it will be sent in the state |
| 236 | * handlers. |
| 237 | */ |
| 238 | method = &rdata->msg_info.msg->line.req.method; |
| 239 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 240 | if (method->id == PJSIP_INVITE_METHOD) { |
| 241 | return PJ_TRUE; |
| 242 | } |
| 243 | |
| 244 | /* BYE and CANCEL must have existing invite session */ |
| 245 | if (method->id == PJSIP_BYE_METHOD || |
| 246 | method->id == PJSIP_CANCEL_METHOD) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 247 | { |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 248 | if (inv == NULL) |
| 249 | return PJ_FALSE; |
| 250 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 251 | return PJ_TRUE; |
| 252 | } |
| 253 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 254 | /* On receipt ACK request, when state is CONNECTING, |
| 255 | * move state to CONFIRMED. |
| 256 | */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 257 | if (method->id == PJSIP_ACK_METHOD && inv) { |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 258 | |
Benny Prijono | f521eb0 | 2006-08-06 23:07:25 +0000 | [diff] [blame] | 259 | /* Ignore ACK if pending INVITE transaction has not finished. */ |
| 260 | if (inv->invite_tsx && |
| 261 | inv->invite_tsx->state < PJSIP_TSX_STATE_COMPLETED) |
| 262 | { |
| 263 | return PJ_TRUE; |
| 264 | } |
| 265 | |
Benny Prijono | 5eff043 | 2006-02-09 14:14:21 +0000 | [diff] [blame] | 266 | /* Terminate INVITE transaction, if it's still present. */ |
| 267 | if (inv->invite_tsx && |
| 268 | inv->invite_tsx->state <= PJSIP_TSX_STATE_COMPLETED) |
| 269 | { |
Benny Prijono | f521eb0 | 2006-08-06 23:07:25 +0000 | [diff] [blame] | 270 | pj_assert(inv->invite_tsx->status_code >= 200); |
Benny Prijono | 5eff043 | 2006-02-09 14:14:21 +0000 | [diff] [blame] | 271 | pjsip_tsx_terminate(inv->invite_tsx, |
| 272 | inv->invite_tsx->status_code); |
| 273 | inv->invite_tsx = NULL; |
| 274 | } |
| 275 | |
Benny Prijono | 32ac8fe | 2006-03-02 21:16:55 +0000 | [diff] [blame] | 276 | /* On receipt of ACK, only set state to confirmed when state |
| 277 | * is CONNECTING (e.g. we don't want to set the state to confirmed |
| 278 | * when we receive ACK retransmission after sending non-2xx!) |
| 279 | */ |
| 280 | if (inv->state == PJSIP_INV_STATE_CONNECTING) { |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 281 | pjsip_event event; |
| 282 | |
| 283 | PJSIP_EVENT_INIT_RX_MSG(event, rdata); |
| 284 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, &event); |
| 285 | } |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 286 | } |
| 287 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 288 | return PJ_FALSE; |
| 289 | } |
| 290 | |
| 291 | /* |
| 292 | * Module on_rx_response(). |
| 293 | * |
| 294 | * This callback is called for these events: |
| 295 | * - dialog distributes incoming 2xx response to INVITE (outside |
| 296 | * transaction) to its usages. |
| 297 | * - endpoint distributes strayed responses. |
| 298 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 299 | static pj_bool_t mod_inv_on_rx_response(pjsip_rx_data *rdata) |
| 300 | { |
| 301 | pjsip_dialog *dlg; |
| 302 | pjsip_inv_session *inv; |
| 303 | pjsip_msg *msg = rdata->msg_info.msg; |
| 304 | |
| 305 | dlg = pjsip_rdata_get_dlg(rdata); |
| 306 | |
| 307 | /* Ignore responses outside dialog */ |
| 308 | if (dlg == NULL) |
| 309 | return PJ_FALSE; |
| 310 | |
| 311 | /* Ignore responses not belonging to invite session */ |
| 312 | inv = pjsip_dlg_get_inv_session(dlg); |
| 313 | if (inv == NULL) |
| 314 | return PJ_FALSE; |
| 315 | |
| 316 | /* This MAY be retransmission of 2xx response to INVITE. |
| 317 | * If it is, we need to send ACK. |
| 318 | */ |
| 319 | if (msg->type == PJSIP_RESPONSE_MSG && msg->line.status.code/100==2 && |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 320 | rdata->msg_info.cseq->method.id == PJSIP_INVITE_METHOD && |
| 321 | inv->invite_tsx == NULL) |
| 322 | { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 323 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 324 | inv_send_ack(inv, rdata); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 325 | return PJ_TRUE; |
| 326 | |
| 327 | } |
| 328 | |
| 329 | /* No other processing needs to be done here. */ |
| 330 | return PJ_FALSE; |
| 331 | } |
| 332 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 333 | /* |
| 334 | * Module on_tsx_state() |
| 335 | * |
| 336 | * This callback is called by dialog framework for all transactions |
| 337 | * inside the dialog for all its dialog usages. |
| 338 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 339 | static void mod_inv_on_tsx_state(pjsip_transaction *tsx, pjsip_event *e) |
| 340 | { |
| 341 | pjsip_dialog *dlg; |
| 342 | pjsip_inv_session *inv; |
| 343 | |
| 344 | dlg = pjsip_tsx_get_dlg(tsx); |
| 345 | if (dlg == NULL) |
| 346 | return; |
| 347 | |
| 348 | inv = pjsip_dlg_get_inv_session(dlg); |
| 349 | if (inv == NULL) |
| 350 | return; |
| 351 | |
| 352 | /* Call state handler for the invite session. */ |
| 353 | (*inv_state_handler[inv->state])(inv, e); |
| 354 | |
| 355 | /* Call on_tsx_state */ |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 356 | if (mod_inv.cb.on_tsx_state_changed && inv->notify) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 357 | (*mod_inv.cb.on_tsx_state_changed)(inv, tsx, e); |
| 358 | |
| 359 | /* Clear invite transaction when tsx is terminated. */ |
| 360 | if (tsx->state==PJSIP_TSX_STATE_TERMINATED && tsx == inv->invite_tsx) |
| 361 | inv->invite_tsx = NULL; |
| 362 | } |
| 363 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 364 | |
| 365 | /* |
| 366 | * Initialize the invite module. |
| 367 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 368 | PJ_DEF(pj_status_t) pjsip_inv_usage_init( pjsip_endpoint *endpt, |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 369 | const pjsip_inv_callback *cb) |
| 370 | { |
| 371 | pj_status_t status; |
| 372 | |
| 373 | /* Check arguments. */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 374 | PJ_ASSERT_RETURN(endpt && cb, PJ_EINVAL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 375 | |
| 376 | /* Some callbacks are mandatory */ |
| 377 | PJ_ASSERT_RETURN(cb->on_state_changed && cb->on_new_session, PJ_EINVAL); |
| 378 | |
| 379 | /* Check if module already registered. */ |
| 380 | PJ_ASSERT_RETURN(mod_inv.mod.id == -1, PJ_EINVALIDOP); |
| 381 | |
| 382 | /* Copy param. */ |
| 383 | pj_memcpy(&mod_inv.cb, cb, sizeof(pjsip_inv_callback)); |
| 384 | |
| 385 | mod_inv.endpt = endpt; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 386 | |
| 387 | /* Register the module. */ |
| 388 | status = pjsip_endpt_register_module(endpt, &mod_inv.mod); |
Benny Prijono | 053f522 | 2006-11-11 16:16:04 +0000 | [diff] [blame] | 389 | if (status != PJ_SUCCESS) |
| 390 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 391 | |
Benny Prijono | 053f522 | 2006-11-11 16:16:04 +0000 | [diff] [blame] | 392 | return PJ_SUCCESS; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 393 | } |
| 394 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 395 | /* |
| 396 | * Get the instance of invite module. |
| 397 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 398 | PJ_DEF(pjsip_module*) pjsip_inv_usage_instance(void) |
| 399 | { |
| 400 | return &mod_inv.mod; |
| 401 | } |
| 402 | |
| 403 | |
Benny Prijono | 632ce71 | 2006-02-09 14:01:40 +0000 | [diff] [blame] | 404 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 405 | /* |
| 406 | * Return the invite session for the specified dialog. |
| 407 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 408 | PJ_DEF(pjsip_inv_session*) pjsip_dlg_get_inv_session(pjsip_dialog *dlg) |
| 409 | { |
| 410 | return dlg->mod_data[mod_inv.mod.id]; |
| 411 | } |
| 412 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 413 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 414 | /* |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 415 | * Get INVITE state name. |
| 416 | */ |
| 417 | PJ_DEF(const char *) pjsip_inv_state_name(pjsip_inv_state state) |
| 418 | { |
| 419 | PJ_ASSERT_RETURN(state >= PJSIP_INV_STATE_NULL && |
| 420 | state <= PJSIP_INV_STATE_DISCONNECTED, |
| 421 | "??"); |
| 422 | |
| 423 | return inv_state_names[state]; |
| 424 | } |
| 425 | |
| 426 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 427 | * Create UAC invite session. |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 428 | */ |
| 429 | PJ_DEF(pj_status_t) pjsip_inv_create_uac( pjsip_dialog *dlg, |
| 430 | const pjmedia_sdp_session *local_sdp, |
| 431 | unsigned options, |
| 432 | pjsip_inv_session **p_inv) |
| 433 | { |
| 434 | pjsip_inv_session *inv; |
| 435 | pj_status_t status; |
| 436 | |
| 437 | /* Verify arguments. */ |
| 438 | PJ_ASSERT_RETURN(dlg && p_inv, PJ_EINVAL); |
| 439 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 440 | /* Must lock dialog first */ |
| 441 | pjsip_dlg_inc_lock(dlg); |
| 442 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 443 | /* Normalize options */ |
| 444 | if (options & PJSIP_INV_REQUIRE_100REL) |
| 445 | options |= PJSIP_INV_SUPPORT_100REL; |
| 446 | |
| 447 | if (options & PJSIP_INV_REQUIRE_TIMER) |
| 448 | options |= PJSIP_INV_SUPPORT_TIMER; |
| 449 | |
| 450 | /* Create the session */ |
| 451 | inv = pj_pool_zalloc(dlg->pool, sizeof(pjsip_inv_session)); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 452 | pj_assert(inv != NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 453 | |
| 454 | inv->pool = dlg->pool; |
| 455 | inv->role = PJSIP_ROLE_UAC; |
| 456 | inv->state = PJSIP_INV_STATE_NULL; |
| 457 | inv->dlg = dlg; |
| 458 | inv->options = options; |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 459 | inv->notify = PJ_TRUE; |
| 460 | inv->cause = 0; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 461 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 462 | /* Object name will use the same dialog pointer. */ |
Benny Prijono | ed811d7 | 2006-03-10 12:57:12 +0000 | [diff] [blame] | 463 | 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] | 464 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 465 | /* Create negotiator if local_sdp is specified. */ |
| 466 | if (local_sdp) { |
| 467 | status = pjmedia_sdp_neg_create_w_local_offer(dlg->pool, local_sdp, |
| 468 | &inv->neg); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 469 | if (status != PJ_SUCCESS) { |
| 470 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 471 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 472 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 473 | } |
| 474 | |
| 475 | /* Register invite as dialog usage. */ |
| 476 | status = pjsip_dlg_add_usage(dlg, &mod_inv.mod, inv); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 477 | if (status != PJ_SUCCESS) { |
| 478 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 479 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 480 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 481 | |
| 482 | /* Increment dialog session */ |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 483 | pjsip_dlg_inc_session(dlg, &mod_inv.mod); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 484 | |
| 485 | /* Done */ |
| 486 | *p_inv = inv; |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 487 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 488 | pjsip_dlg_dec_lock(dlg); |
| 489 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 490 | PJ_LOG(5,(inv->obj_name, "UAC invite session created for dialog %s", |
| 491 | dlg->obj_name)); |
| 492 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 493 | return PJ_SUCCESS; |
| 494 | } |
| 495 | |
| 496 | /* |
| 497 | * Verify incoming INVITE request. |
| 498 | */ |
| 499 | PJ_DEF(pj_status_t) pjsip_inv_verify_request(pjsip_rx_data *rdata, |
| 500 | unsigned *options, |
| 501 | const pjmedia_sdp_session *l_sdp, |
| 502 | pjsip_dialog *dlg, |
| 503 | pjsip_endpoint *endpt, |
| 504 | pjsip_tx_data **p_tdata) |
| 505 | { |
| 506 | pjsip_msg *msg; |
| 507 | pjsip_allow_hdr *allow; |
| 508 | pjsip_supported_hdr *sup_hdr; |
| 509 | pjsip_require_hdr *req_hdr; |
| 510 | int code = 200; |
| 511 | unsigned rem_option = 0; |
| 512 | pj_status_t status = PJ_SUCCESS; |
| 513 | pjsip_hdr res_hdr_list; |
| 514 | |
| 515 | /* Init return arguments. */ |
| 516 | if (p_tdata) *p_tdata = NULL; |
| 517 | |
| 518 | /* Verify arguments. */ |
| 519 | PJ_ASSERT_RETURN(rdata != NULL && options != NULL, PJ_EINVAL); |
| 520 | |
| 521 | /* Normalize options */ |
| 522 | if (*options & PJSIP_INV_REQUIRE_100REL) |
| 523 | *options |= PJSIP_INV_SUPPORT_100REL; |
| 524 | |
| 525 | if (*options & PJSIP_INV_REQUIRE_TIMER) |
| 526 | *options |= PJSIP_INV_SUPPORT_TIMER; |
| 527 | |
| 528 | /* Get the message in rdata */ |
| 529 | msg = rdata->msg_info.msg; |
| 530 | |
| 531 | /* Must be INVITE request. */ |
| 532 | PJ_ASSERT_RETURN(msg->type == PJSIP_REQUEST_MSG && |
| 533 | msg->line.req.method.id == PJSIP_INVITE_METHOD, |
| 534 | PJ_EINVAL); |
| 535 | |
| 536 | /* If tdata is specified, then either dlg or endpt must be specified */ |
| 537 | PJ_ASSERT_RETURN((!p_tdata) || (endpt || dlg), PJ_EINVAL); |
| 538 | |
| 539 | /* Get the endpoint */ |
| 540 | endpt = endpt ? endpt : dlg->endpt; |
| 541 | |
| 542 | /* Init response header list */ |
| 543 | pj_list_init(&res_hdr_list); |
| 544 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 545 | /* Check the request body, see if it'inv something that we support |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 546 | * (i.e. SDP). |
| 547 | */ |
| 548 | if (msg->body) { |
| 549 | pjsip_msg_body *body = msg->body; |
| 550 | pj_str_t str_application = {"application", 11}; |
| 551 | pj_str_t str_sdp = { "sdp", 3 }; |
| 552 | pjmedia_sdp_session *sdp; |
| 553 | |
| 554 | /* Check content type. */ |
| 555 | if (pj_stricmp(&body->content_type.type, &str_application) != 0 || |
| 556 | pj_stricmp(&body->content_type.subtype, &str_sdp) != 0) |
| 557 | { |
| 558 | /* Not "application/sdp" */ |
| 559 | code = PJSIP_SC_UNSUPPORTED_MEDIA_TYPE; |
| 560 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 561 | |
| 562 | if (p_tdata) { |
| 563 | /* Add Accept header to response */ |
| 564 | pjsip_accept_hdr *acc; |
| 565 | |
| 566 | acc = pjsip_accept_hdr_create(rdata->tp_info.pool); |
| 567 | PJ_ASSERT_RETURN(acc, PJ_ENOMEM); |
| 568 | acc->values[acc->count++] = pj_str("application/sdp"); |
| 569 | pj_list_push_back(&res_hdr_list, acc); |
| 570 | } |
| 571 | |
| 572 | goto on_return; |
| 573 | } |
| 574 | |
| 575 | /* Parse and validate SDP */ |
| 576 | status = pjmedia_sdp_parse(rdata->tp_info.pool, body->data, body->len, |
| 577 | &sdp); |
| 578 | if (status == PJ_SUCCESS) |
| 579 | status = pjmedia_sdp_validate(sdp); |
| 580 | |
| 581 | if (status != PJ_SUCCESS) { |
| 582 | /* Unparseable or invalid SDP */ |
| 583 | code = PJSIP_SC_BAD_REQUEST; |
| 584 | |
| 585 | if (p_tdata) { |
| 586 | /* Add Warning header. */ |
| 587 | pjsip_warning_hdr *w; |
| 588 | |
| 589 | w = pjsip_warning_hdr_create_from_status(rdata->tp_info.pool, |
| 590 | pjsip_endpt_name(endpt), |
| 591 | status); |
| 592 | PJ_ASSERT_RETURN(w, PJ_ENOMEM); |
| 593 | |
| 594 | pj_list_push_back(&res_hdr_list, w); |
| 595 | } |
| 596 | |
| 597 | goto on_return; |
| 598 | } |
| 599 | |
| 600 | /* Negotiate with local SDP */ |
| 601 | if (l_sdp) { |
| 602 | pjmedia_sdp_neg *neg; |
| 603 | |
| 604 | /* Local SDP must be valid! */ |
| 605 | PJ_ASSERT_RETURN((status=pjmedia_sdp_validate(l_sdp))==PJ_SUCCESS, |
| 606 | status); |
| 607 | |
| 608 | /* Create SDP negotiator */ |
| 609 | status = pjmedia_sdp_neg_create_w_remote_offer( |
| 610 | rdata->tp_info.pool, l_sdp, sdp, &neg); |
| 611 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, status); |
| 612 | |
| 613 | /* Negotiate SDP */ |
| 614 | status = pjmedia_sdp_neg_negotiate(rdata->tp_info.pool, neg, 0); |
| 615 | if (status != PJ_SUCCESS) { |
| 616 | |
| 617 | /* Incompatible media */ |
| 618 | code = PJSIP_SC_NOT_ACCEPTABLE_HERE; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 619 | |
| 620 | if (p_tdata) { |
| 621 | pjsip_accept_hdr *acc; |
| 622 | pjsip_warning_hdr *w; |
| 623 | |
| 624 | /* Add Warning header. */ |
| 625 | w = pjsip_warning_hdr_create_from_status( |
| 626 | rdata->tp_info.pool, |
| 627 | pjsip_endpt_name(endpt), status); |
| 628 | PJ_ASSERT_RETURN(w, PJ_ENOMEM); |
| 629 | |
| 630 | pj_list_push_back(&res_hdr_list, w); |
| 631 | |
| 632 | /* Add Accept header to response */ |
| 633 | acc = pjsip_accept_hdr_create(rdata->tp_info.pool); |
| 634 | PJ_ASSERT_RETURN(acc, PJ_ENOMEM); |
| 635 | acc->values[acc->count++] = pj_str("application/sdp"); |
| 636 | pj_list_push_back(&res_hdr_list, acc); |
| 637 | |
| 638 | } |
| 639 | |
| 640 | goto on_return; |
| 641 | } |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | /* Check supported methods, see if peer supports UPDATE. |
| 646 | * We just assume that peer supports standard INVITE, ACK, CANCEL, and BYE |
| 647 | * implicitly by sending this INVITE. |
| 648 | */ |
| 649 | allow = pjsip_msg_find_hdr(msg, PJSIP_H_ALLOW, NULL); |
| 650 | if (allow) { |
| 651 | unsigned i; |
| 652 | const pj_str_t STR_UPDATE = { "UPDATE", 6 }; |
| 653 | |
| 654 | for (i=0; i<allow->count; ++i) { |
| 655 | if (pj_stricmp(&allow->values[i], &STR_UPDATE)==0) |
| 656 | break; |
| 657 | } |
| 658 | |
| 659 | if (i != allow->count) { |
| 660 | /* UPDATE is present in Allow */ |
| 661 | rem_option |= PJSIP_INV_SUPPORT_UPDATE; |
| 662 | } |
| 663 | |
| 664 | } |
| 665 | |
| 666 | /* Check Supported header */ |
| 667 | sup_hdr = pjsip_msg_find_hdr(msg, PJSIP_H_SUPPORTED, NULL); |
| 668 | if (sup_hdr) { |
| 669 | unsigned i; |
| 670 | pj_str_t STR_100REL = { "100rel", 6}; |
| 671 | pj_str_t STR_TIMER = { "timer", 5 }; |
| 672 | |
| 673 | for (i=0; i<sup_hdr->count; ++i) { |
| 674 | if (pj_stricmp(&sup_hdr->values[i], &STR_100REL)==0) |
| 675 | rem_option |= PJSIP_INV_SUPPORT_100REL; |
| 676 | else if (pj_stricmp(&sup_hdr->values[i], &STR_TIMER)==0) |
| 677 | rem_option |= PJSIP_INV_SUPPORT_TIMER; |
| 678 | } |
| 679 | } |
| 680 | |
| 681 | /* Check Require header */ |
| 682 | req_hdr = pjsip_msg_find_hdr(msg, PJSIP_H_REQUIRE, NULL); |
| 683 | if (req_hdr) { |
| 684 | unsigned i; |
Benny Prijono | 053f522 | 2006-11-11 16:16:04 +0000 | [diff] [blame] | 685 | const pj_str_t STR_100REL = { "100rel", 6}; |
| 686 | const pj_str_t STR_TIMER = { "timer", 5 }; |
| 687 | const pj_str_t STR_REPLACES = { "replaces", 8 }; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 688 | unsigned unsupp_cnt = 0; |
| 689 | pj_str_t unsupp_tags[PJSIP_GENERIC_ARRAY_MAX_COUNT]; |
| 690 | |
| 691 | for (i=0; i<req_hdr->count; ++i) { |
| 692 | if ((*options & PJSIP_INV_SUPPORT_100REL) && |
| 693 | pj_stricmp(&req_hdr->values[i], &STR_100REL)==0) |
| 694 | { |
| 695 | rem_option |= PJSIP_INV_REQUIRE_100REL; |
| 696 | |
| 697 | } else if ((*options && PJSIP_INV_SUPPORT_TIMER) && |
| 698 | pj_stricmp(&req_hdr->values[i], &STR_TIMER)==0) |
| 699 | { |
| 700 | rem_option |= PJSIP_INV_REQUIRE_TIMER; |
| 701 | |
Benny Prijono | 053f522 | 2006-11-11 16:16:04 +0000 | [diff] [blame] | 702 | } else if (pj_stricmp(&req_hdr->values[i], &STR_REPLACES)==0) { |
| 703 | pj_bool_t supp; |
| 704 | |
| 705 | supp = pjsip_endpt_has_capability(endpt, PJSIP_H_SUPPORTED, |
| 706 | NULL, &STR_REPLACES); |
| 707 | if (!supp) |
| 708 | unsupp_tags[unsupp_cnt++] = req_hdr->values[i]; |
| 709 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 710 | } else { |
| 711 | /* Unknown/unsupported extension tag! */ |
| 712 | unsupp_tags[unsupp_cnt++] = req_hdr->values[i]; |
| 713 | } |
| 714 | } |
| 715 | |
| 716 | /* Check if there are required tags that we don't support */ |
| 717 | if (unsupp_cnt) { |
| 718 | |
| 719 | code = PJSIP_SC_BAD_EXTENSION; |
| 720 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 721 | |
| 722 | if (p_tdata) { |
| 723 | pjsip_unsupported_hdr *unsupp_hdr; |
| 724 | const pjsip_hdr *h; |
| 725 | |
| 726 | /* Add Unsupported header. */ |
| 727 | unsupp_hdr = pjsip_unsupported_hdr_create(rdata->tp_info.pool); |
| 728 | PJ_ASSERT_RETURN(unsupp_hdr != NULL, PJ_ENOMEM); |
| 729 | |
| 730 | unsupp_hdr->count = unsupp_cnt; |
| 731 | for (i=0; i<unsupp_cnt; ++i) |
| 732 | unsupp_hdr->values[i] = unsupp_tags[i]; |
| 733 | |
| 734 | pj_list_push_back(&res_hdr_list, unsupp_hdr); |
| 735 | |
| 736 | /* Add Supported header. */ |
| 737 | h = pjsip_endpt_get_capability(endpt, PJSIP_H_SUPPORTED, |
| 738 | NULL); |
| 739 | pj_assert(h); |
| 740 | if (h) { |
| 741 | sup_hdr = pjsip_hdr_clone(rdata->tp_info.pool, h); |
| 742 | pj_list_push_back(&res_hdr_list, sup_hdr); |
| 743 | } |
| 744 | } |
| 745 | |
| 746 | goto on_return; |
| 747 | } |
| 748 | } |
| 749 | |
| 750 | /* Check if there are local requirements that are not supported |
| 751 | * by peer. |
| 752 | */ |
| 753 | if ( ((*options & PJSIP_INV_REQUIRE_100REL)!=0 && |
| 754 | (rem_option & PJSIP_INV_SUPPORT_100REL)==0) || |
| 755 | ((*options & PJSIP_INV_REQUIRE_TIMER)!=0 && |
| 756 | (rem_option & PJSIP_INV_SUPPORT_TIMER)==0)) |
| 757 | { |
| 758 | code = PJSIP_SC_EXTENSION_REQUIRED; |
| 759 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 760 | |
| 761 | if (p_tdata) { |
| 762 | const pjsip_hdr *h; |
| 763 | |
| 764 | /* Add Require header. */ |
| 765 | req_hdr = pjsip_require_hdr_create(rdata->tp_info.pool); |
| 766 | PJ_ASSERT_RETURN(req_hdr != NULL, PJ_ENOMEM); |
| 767 | |
| 768 | if (*options & PJSIP_INV_REQUIRE_100REL) |
| 769 | req_hdr->values[req_hdr->count++] = pj_str("100rel"); |
| 770 | |
| 771 | if (*options & PJSIP_INV_REQUIRE_TIMER) |
| 772 | req_hdr->values[req_hdr->count++] = pj_str("timer"); |
| 773 | |
| 774 | pj_list_push_back(&res_hdr_list, req_hdr); |
| 775 | |
| 776 | /* Add Supported header. */ |
| 777 | h = pjsip_endpt_get_capability(endpt, PJSIP_H_SUPPORTED, |
| 778 | NULL); |
| 779 | pj_assert(h); |
| 780 | if (h) { |
| 781 | sup_hdr = pjsip_hdr_clone(rdata->tp_info.pool, h); |
| 782 | pj_list_push_back(&res_hdr_list, sup_hdr); |
| 783 | } |
| 784 | |
| 785 | } |
| 786 | |
| 787 | goto on_return; |
| 788 | } |
| 789 | |
| 790 | on_return: |
| 791 | |
| 792 | /* Create response if necessary */ |
| 793 | if (code != 200 && p_tdata) { |
| 794 | pjsip_tx_data *tdata; |
| 795 | const pjsip_hdr *h; |
| 796 | |
| 797 | if (dlg) { |
| 798 | status = pjsip_dlg_create_response(dlg, rdata, code, NULL, |
| 799 | &tdata); |
| 800 | } else { |
| 801 | status = pjsip_endpt_create_response(endpt, rdata, code, NULL, |
| 802 | &tdata); |
| 803 | } |
| 804 | |
| 805 | if (status != PJ_SUCCESS) |
| 806 | return status; |
| 807 | |
| 808 | /* Add response headers. */ |
| 809 | h = res_hdr_list.next; |
| 810 | while (h != &res_hdr_list) { |
| 811 | pjsip_hdr *cloned; |
| 812 | |
| 813 | cloned = pjsip_hdr_clone(tdata->pool, h); |
| 814 | PJ_ASSERT_RETURN(cloned, PJ_ENOMEM); |
| 815 | |
| 816 | pjsip_msg_add_hdr(tdata->msg, cloned); |
| 817 | |
| 818 | h = h->next; |
| 819 | } |
| 820 | |
| 821 | *p_tdata = tdata; |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 822 | |
| 823 | /* Can not return PJ_SUCCESS when response message is produced. |
| 824 | * Ref: PROTOS test ~#2490 |
| 825 | */ |
| 826 | if (status == PJ_SUCCESS) |
| 827 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 828 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 829 | } |
| 830 | |
| 831 | return status; |
| 832 | } |
| 833 | |
| 834 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 835 | * Create UAS invite session. |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 836 | */ |
| 837 | PJ_DEF(pj_status_t) pjsip_inv_create_uas( pjsip_dialog *dlg, |
| 838 | pjsip_rx_data *rdata, |
| 839 | const pjmedia_sdp_session *local_sdp, |
| 840 | unsigned options, |
| 841 | pjsip_inv_session **p_inv) |
| 842 | { |
| 843 | pjsip_inv_session *inv; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 844 | struct tsx_inv_data *tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 845 | pjsip_msg *msg; |
| 846 | pjmedia_sdp_session *rem_sdp = NULL; |
| 847 | pj_status_t status; |
| 848 | |
| 849 | /* Verify arguments. */ |
| 850 | PJ_ASSERT_RETURN(dlg && rdata && p_inv, PJ_EINVAL); |
| 851 | |
| 852 | /* Dialog MUST have been initialised. */ |
| 853 | PJ_ASSERT_RETURN(pjsip_rdata_get_tsx(rdata) != NULL, PJ_EINVALIDOP); |
| 854 | |
| 855 | msg = rdata->msg_info.msg; |
| 856 | |
| 857 | /* rdata MUST contain INVITE request */ |
| 858 | PJ_ASSERT_RETURN(msg->type == PJSIP_REQUEST_MSG && |
| 859 | msg->line.req.method.id == PJSIP_INVITE_METHOD, |
| 860 | PJ_EINVALIDOP); |
| 861 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 862 | /* Lock dialog */ |
| 863 | pjsip_dlg_inc_lock(dlg); |
| 864 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 865 | /* Normalize options */ |
| 866 | if (options & PJSIP_INV_REQUIRE_100REL) |
| 867 | options |= PJSIP_INV_SUPPORT_100REL; |
| 868 | |
| 869 | if (options & PJSIP_INV_REQUIRE_TIMER) |
| 870 | options |= PJSIP_INV_SUPPORT_TIMER; |
| 871 | |
| 872 | /* Create the session */ |
| 873 | inv = pj_pool_zalloc(dlg->pool, sizeof(pjsip_inv_session)); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 874 | pj_assert(inv != NULL); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 875 | |
| 876 | inv->pool = dlg->pool; |
| 877 | inv->role = PJSIP_ROLE_UAS; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 878 | inv->state = PJSIP_INV_STATE_NULL; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 879 | inv->dlg = dlg; |
| 880 | inv->options = options; |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 881 | inv->notify = PJ_TRUE; |
| 882 | inv->cause = 0; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 883 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 884 | /* Object name will use the same dialog pointer. */ |
Benny Prijono | ed811d7 | 2006-03-10 12:57:12 +0000 | [diff] [blame] | 885 | 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] | 886 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 887 | /* Parse SDP in message body, if present. */ |
| 888 | if (msg->body) { |
| 889 | pjsip_msg_body *body = msg->body; |
| 890 | |
| 891 | /* Parse and validate SDP */ |
| 892 | status = pjmedia_sdp_parse(inv->pool, body->data, body->len, |
| 893 | &rem_sdp); |
| 894 | if (status == PJ_SUCCESS) |
| 895 | status = pjmedia_sdp_validate(rem_sdp); |
| 896 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 897 | if (status != PJ_SUCCESS) { |
| 898 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 899 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 900 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 901 | } |
| 902 | |
| 903 | /* Create negotiator. */ |
| 904 | if (rem_sdp) { |
| 905 | status = pjmedia_sdp_neg_create_w_remote_offer(inv->pool, local_sdp, |
| 906 | rem_sdp, &inv->neg); |
| 907 | |
| 908 | } else if (local_sdp) { |
| 909 | status = pjmedia_sdp_neg_create_w_local_offer(inv->pool, local_sdp, |
| 910 | &inv->neg); |
| 911 | } else { |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 912 | status = PJ_SUCCESS; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 913 | } |
| 914 | |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 915 | if (status != PJ_SUCCESS) { |
| 916 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 917 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 918 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 919 | |
| 920 | /* Register invite as dialog usage. */ |
| 921 | status = pjsip_dlg_add_usage(dlg, &mod_inv.mod, inv); |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 922 | if (status != PJ_SUCCESS) { |
| 923 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 924 | return status; |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 925 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 926 | |
| 927 | /* Increment session in the dialog. */ |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 928 | pjsip_dlg_inc_session(dlg, &mod_inv.mod); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 929 | |
| 930 | /* Save the invite transaction. */ |
| 931 | inv->invite_tsx = pjsip_rdata_get_tsx(rdata); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 932 | |
| 933 | /* Attach our data to the transaction. */ |
| 934 | tsx_inv_data = pj_pool_zalloc(inv->invite_tsx->pool, |
| 935 | sizeof(struct tsx_inv_data)); |
| 936 | tsx_inv_data->inv = inv; |
| 937 | inv->invite_tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 938 | |
| 939 | /* Done */ |
Benny Prijono | 8eae838 | 2006-08-10 21:44:26 +0000 | [diff] [blame] | 940 | pjsip_dlg_dec_lock(dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 941 | *p_inv = inv; |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 942 | |
| 943 | PJ_LOG(5,(inv->obj_name, "UAS invite session created for dialog %s", |
| 944 | dlg->obj_name)); |
| 945 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 946 | return PJ_SUCCESS; |
| 947 | } |
| 948 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 949 | /* |
| 950 | * Forcefully terminate the session. |
| 951 | */ |
| 952 | PJ_DEF(pj_status_t) pjsip_inv_terminate( pjsip_inv_session *inv, |
| 953 | int st_code, |
| 954 | pj_bool_t notify) |
| 955 | { |
| 956 | PJ_ASSERT_RETURN(inv, PJ_EINVAL); |
| 957 | |
| 958 | /* Lock dialog. */ |
| 959 | pjsip_dlg_inc_lock(inv->dlg); |
| 960 | |
| 961 | /* Set callback notify flag. */ |
| 962 | inv->notify = notify; |
| 963 | |
| 964 | /* If there's pending transaction, terminate the transaction. |
| 965 | * This may subsequently set the INVITE session state to |
| 966 | * disconnected. |
| 967 | */ |
| 968 | if (inv->invite_tsx && |
| 969 | inv->invite_tsx->state <= PJSIP_TSX_STATE_COMPLETED) |
| 970 | { |
| 971 | pjsip_tsx_terminate(inv->invite_tsx, st_code); |
| 972 | |
| 973 | } |
| 974 | |
| 975 | /* Set cause. */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 976 | inv_set_cause(inv, st_code, NULL); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 977 | |
| 978 | /* Forcefully terminate the session if state is not DISCONNECTED */ |
| 979 | if (inv->state != PJSIP_INV_STATE_DISCONNECTED) { |
| 980 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, NULL); |
| 981 | } |
| 982 | |
| 983 | /* Done. |
| 984 | * The dec_lock() below will actually destroys the dialog if it |
| 985 | * has no other session. |
| 986 | */ |
| 987 | pjsip_dlg_dec_lock(inv->dlg); |
| 988 | |
| 989 | return PJ_SUCCESS; |
| 990 | } |
| 991 | |
| 992 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 993 | static void *clone_sdp(pj_pool_t *pool, const void *data, unsigned len) |
| 994 | { |
| 995 | PJ_UNUSED_ARG(len); |
| 996 | return pjmedia_sdp_session_clone(pool, data); |
| 997 | } |
| 998 | |
| 999 | static int print_sdp(pjsip_msg_body *body, char *buf, pj_size_t len) |
| 1000 | { |
| 1001 | return pjmedia_sdp_print(body->data, buf, len); |
| 1002 | } |
| 1003 | |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1004 | |
| 1005 | PJ_DEF(pj_status_t) pjsip_create_sdp_body( pj_pool_t *pool, |
| 1006 | pjmedia_sdp_session *sdp, |
| 1007 | pjsip_msg_body **p_body) |
| 1008 | { |
| 1009 | const pj_str_t STR_APPLICATION = { "application", 11}; |
| 1010 | const pj_str_t STR_SDP = { "sdp", 3 }; |
| 1011 | pjsip_msg_body *body; |
| 1012 | |
| 1013 | body = pj_pool_zalloc(pool, sizeof(pjsip_msg_body)); |
| 1014 | PJ_ASSERT_RETURN(body != NULL, PJ_ENOMEM); |
| 1015 | |
| 1016 | body->content_type.type = STR_APPLICATION; |
| 1017 | body->content_type.subtype = STR_SDP; |
| 1018 | body->data = sdp; |
| 1019 | body->len = 0; |
| 1020 | body->clone_data = &clone_sdp; |
| 1021 | body->print_body = &print_sdp; |
| 1022 | |
| 1023 | *p_body = body; |
| 1024 | |
| 1025 | return PJ_SUCCESS; |
| 1026 | } |
| 1027 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1028 | static pjsip_msg_body *create_sdp_body(pj_pool_t *pool, |
| 1029 | const pjmedia_sdp_session *c_sdp) |
| 1030 | { |
| 1031 | pjsip_msg_body *body; |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1032 | pj_status_t status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1033 | |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1034 | status = pjsip_create_sdp_body(pool, |
| 1035 | pjmedia_sdp_session_clone(pool, c_sdp), |
| 1036 | &body); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1037 | |
Benny Prijono | 5631561 | 2006-07-18 14:39:40 +0000 | [diff] [blame] | 1038 | if (status != PJ_SUCCESS) |
| 1039 | return NULL; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1040 | |
| 1041 | return body; |
| 1042 | } |
| 1043 | |
| 1044 | /* |
| 1045 | * Create initial INVITE request. |
| 1046 | */ |
| 1047 | PJ_DEF(pj_status_t) pjsip_inv_invite( pjsip_inv_session *inv, |
| 1048 | pjsip_tx_data **p_tdata ) |
| 1049 | { |
| 1050 | pjsip_tx_data *tdata; |
| 1051 | const pjsip_hdr *hdr; |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1052 | pj_bool_t has_sdp; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1053 | pj_status_t status; |
| 1054 | |
| 1055 | /* Verify arguments. */ |
| 1056 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1057 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1058 | /* State MUST be NULL or CONFIRMED. */ |
| 1059 | PJ_ASSERT_RETURN(inv->state == PJSIP_INV_STATE_NULL || |
| 1060 | inv->state == PJSIP_INV_STATE_CONFIRMED, |
| 1061 | PJ_EINVALIDOP); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1062 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1063 | /* Lock dialog. */ |
| 1064 | pjsip_dlg_inc_lock(inv->dlg); |
| 1065 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1066 | /* Create the INVITE request. */ |
| 1067 | status = pjsip_dlg_create_request(inv->dlg, &pjsip_invite_method, -1, |
| 1068 | &tdata); |
| 1069 | if (status != PJ_SUCCESS) |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1070 | goto on_return; |
| 1071 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1072 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1073 | /* If this is the first INVITE, then copy the headers from inv_hdr. |
| 1074 | * These are the headers parsed from the request URI when the |
| 1075 | * dialog was created. |
| 1076 | */ |
| 1077 | if (inv->state == PJSIP_INV_STATE_NULL) { |
| 1078 | hdr = inv->dlg->inv_hdr.next; |
| 1079 | |
| 1080 | while (hdr != &inv->dlg->inv_hdr) { |
| 1081 | pjsip_msg_add_hdr(tdata->msg, |
| 1082 | pjsip_hdr_shallow_clone(tdata->pool, hdr)); |
| 1083 | hdr = hdr->next; |
| 1084 | } |
| 1085 | } |
| 1086 | |
| 1087 | /* See if we have SDP to send. */ |
| 1088 | if (inv->neg) { |
| 1089 | pjmedia_sdp_neg_state neg_state; |
| 1090 | |
| 1091 | neg_state = pjmedia_sdp_neg_get_state(inv->neg); |
| 1092 | |
| 1093 | has_sdp = (neg_state == PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER || |
| 1094 | (neg_state == PJMEDIA_SDP_NEG_STATE_WAIT_NEGO && |
| 1095 | pjmedia_sdp_neg_has_local_answer(inv->neg))); |
| 1096 | |
| 1097 | |
| 1098 | } else { |
| 1099 | has_sdp = PJ_FALSE; |
| 1100 | } |
| 1101 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1102 | /* Add SDP, if any. */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1103 | if (has_sdp) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1104 | const pjmedia_sdp_session *offer; |
| 1105 | |
| 1106 | status = pjmedia_sdp_neg_get_neg_local(inv->neg, &offer); |
| 1107 | if (status != PJ_SUCCESS) |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1108 | goto on_return; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1109 | |
| 1110 | tdata->msg->body = create_sdp_body(tdata->pool, offer); |
| 1111 | } |
| 1112 | |
| 1113 | /* Add Allow header. */ |
| 1114 | hdr = pjsip_endpt_get_capability(inv->dlg->endpt, PJSIP_H_ALLOW, NULL); |
| 1115 | if (hdr) { |
| 1116 | pjsip_msg_add_hdr(tdata->msg, |
| 1117 | pjsip_hdr_shallow_clone(tdata->pool, hdr)); |
| 1118 | } |
| 1119 | |
| 1120 | /* Add Supported header */ |
| 1121 | hdr = pjsip_endpt_get_capability(inv->dlg->endpt, PJSIP_H_SUPPORTED, NULL); |
| 1122 | if (hdr) { |
| 1123 | pjsip_msg_add_hdr(tdata->msg, |
| 1124 | pjsip_hdr_shallow_clone(tdata->pool, hdr)); |
| 1125 | } |
| 1126 | |
| 1127 | /* Add Require header. */ |
| 1128 | PJ_TODO(INVITE_ADD_REQUIRE_HEADER); |
| 1129 | |
| 1130 | /* Done. */ |
| 1131 | *p_tdata = tdata; |
| 1132 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1133 | |
| 1134 | on_return: |
| 1135 | pjsip_dlg_dec_lock(inv->dlg); |
| 1136 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1137 | } |
| 1138 | |
| 1139 | |
| 1140 | /* |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1141 | * Negotiate SDP. |
| 1142 | */ |
| 1143 | static pj_status_t inv_negotiate_sdp( pjsip_inv_session *inv ) |
| 1144 | { |
| 1145 | pj_status_t status; |
| 1146 | |
| 1147 | PJ_ASSERT_RETURN(pjmedia_sdp_neg_get_state(inv->neg) == |
| 1148 | PJMEDIA_SDP_NEG_STATE_WAIT_NEGO, |
| 1149 | PJMEDIA_SDPNEG_EINSTATE); |
| 1150 | |
| 1151 | status = pjmedia_sdp_neg_negotiate(inv->pool, inv->neg, 0); |
| 1152 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1153 | PJ_LOG(5,(inv->obj_name, "SDP negotiation done, status=%d", status)); |
| 1154 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1155 | if (mod_inv.cb.on_media_update && inv->notify) |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1156 | (*mod_inv.cb.on_media_update)(inv, status); |
| 1157 | |
| 1158 | return status; |
| 1159 | } |
| 1160 | |
| 1161 | /* |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1162 | * Check in incoming message for SDP offer/answer. |
| 1163 | */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1164 | static pj_status_t inv_check_sdp_in_incoming_msg( pjsip_inv_session *inv, |
| 1165 | pjsip_transaction *tsx, |
| 1166 | pjsip_rx_data *rdata) |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1167 | { |
| 1168 | struct tsx_inv_data *tsx_inv_data; |
| 1169 | static const pj_str_t str_application = { "application", 11 }; |
| 1170 | static const pj_str_t str_sdp = { "sdp", 3 }; |
| 1171 | pj_status_t status; |
| 1172 | pjsip_msg *msg; |
| 1173 | pjmedia_sdp_session *sdp; |
| 1174 | |
| 1175 | /* Get/attach invite session's transaction data */ |
| 1176 | tsx_inv_data = tsx->mod_data[mod_inv.mod.id]; |
| 1177 | if (tsx_inv_data == NULL) { |
| 1178 | tsx_inv_data = pj_pool_zalloc(tsx->pool, sizeof(struct tsx_inv_data)); |
| 1179 | tsx_inv_data->inv = inv; |
| 1180 | tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
| 1181 | } |
| 1182 | |
| 1183 | /* MUST NOT do multiple SDP offer/answer in a single transaction. |
| 1184 | */ |
| 1185 | |
| 1186 | if (tsx_inv_data->sdp_done) |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1187 | return PJ_SUCCESS; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1188 | |
| 1189 | /* Check if SDP is present in the message. */ |
| 1190 | |
| 1191 | msg = rdata->msg_info.msg; |
| 1192 | if (msg->body == NULL) { |
| 1193 | /* Message doesn't have body. */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1194 | return PJ_SUCCESS; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1195 | } |
| 1196 | |
| 1197 | if (pj_stricmp(&msg->body->content_type.type, &str_application) || |
| 1198 | pj_stricmp(&msg->body->content_type.subtype, &str_sdp)) |
| 1199 | { |
| 1200 | /* Message body is not "application/sdp" */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1201 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1202 | } |
| 1203 | |
| 1204 | /* Parse the SDP body. */ |
| 1205 | |
| 1206 | status = pjmedia_sdp_parse(rdata->tp_info.pool, msg->body->data, |
| 1207 | msg->body->len, &sdp); |
| 1208 | if (status != PJ_SUCCESS) { |
| 1209 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 1210 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 1211 | PJ_LOG(4,(THIS_FILE, "Error parsing SDP in %s: %s", |
| 1212 | pjsip_rx_data_get_info(rdata), errmsg)); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1213 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1214 | } |
| 1215 | |
| 1216 | /* The SDP can be an offer or answer, depending on negotiator's state */ |
| 1217 | |
| 1218 | if (inv->neg == NULL || |
| 1219 | pjmedia_sdp_neg_get_state(inv->neg) == PJMEDIA_SDP_NEG_STATE_DONE) |
| 1220 | { |
| 1221 | |
| 1222 | /* This is an offer. */ |
| 1223 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1224 | PJ_LOG(5,(inv->obj_name, "Got SDP offer in %s", |
| 1225 | pjsip_rx_data_get_info(rdata))); |
| 1226 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1227 | if (inv->neg == NULL) { |
| 1228 | status=pjmedia_sdp_neg_create_w_remote_offer(inv->pool, NULL, |
| 1229 | sdp, &inv->neg); |
| 1230 | } else { |
| 1231 | status=pjmedia_sdp_neg_set_remote_offer(inv->pool, inv->neg, sdp); |
| 1232 | } |
| 1233 | |
| 1234 | if (status != PJ_SUCCESS) { |
| 1235 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 1236 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 1237 | PJ_LOG(4,(THIS_FILE, "Error processing SDP offer in %s: %s", |
| 1238 | pjsip_rx_data_get_info(rdata), errmsg)); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1239 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1240 | } |
| 1241 | |
| 1242 | /* Inform application about remote offer. */ |
| 1243 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1244 | if (mod_inv.cb.on_rx_offer && inv->notify) { |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1245 | |
| 1246 | (*mod_inv.cb.on_rx_offer)(inv, sdp); |
| 1247 | |
| 1248 | } |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1249 | |
| 1250 | } else if (pjmedia_sdp_neg_get_state(inv->neg) == |
| 1251 | PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) |
| 1252 | { |
| 1253 | |
| 1254 | /* This is an answer. |
| 1255 | * Process and negotiate remote answer. |
| 1256 | */ |
| 1257 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1258 | PJ_LOG(5,(inv->obj_name, "Got SDP answer in %s", |
| 1259 | pjsip_rx_data_get_info(rdata))); |
| 1260 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1261 | status = pjmedia_sdp_neg_set_remote_answer(inv->pool, inv->neg, sdp); |
| 1262 | |
| 1263 | if (status != PJ_SUCCESS) { |
| 1264 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 1265 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 1266 | PJ_LOG(4,(THIS_FILE, "Error processing SDP answer in %s: %s", |
| 1267 | pjsip_rx_data_get_info(rdata), errmsg)); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1268 | return PJMEDIA_SDP_EINSDP; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1269 | } |
| 1270 | |
| 1271 | /* Negotiate SDP */ |
| 1272 | |
| 1273 | inv_negotiate_sdp(inv); |
| 1274 | |
| 1275 | /* Mark this transaction has having SDP offer/answer done. */ |
| 1276 | |
| 1277 | tsx_inv_data->sdp_done = 1; |
| 1278 | |
| 1279 | } else { |
| 1280 | |
| 1281 | PJ_LOG(5,(THIS_FILE, "Ignored SDP in %s: negotiator state is %s", |
| 1282 | pjsip_rx_data_get_info(rdata), |
| 1283 | pjmedia_sdp_neg_state_str(pjmedia_sdp_neg_get_state(inv->neg)))); |
| 1284 | } |
| 1285 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1286 | return PJ_SUCCESS; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1287 | } |
| 1288 | |
| 1289 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1290 | /* |
| 1291 | * Process INVITE answer, for both initial and subsequent re-INVITE |
| 1292 | */ |
| 1293 | static pj_status_t process_answer( pjsip_inv_session *inv, |
| 1294 | int st_code, |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1295 | pjsip_tx_data *tdata, |
| 1296 | const pjmedia_sdp_session *local_sdp) |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1297 | { |
| 1298 | pj_status_t status; |
Benny Prijono | ab7399b | 2006-02-27 00:40:31 +0000 | [diff] [blame] | 1299 | const pjmedia_sdp_session *sdp = NULL; |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1300 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1301 | /* If local_sdp is specified, then we MUST NOT have answered the |
| 1302 | * offer before. |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1303 | */ |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1304 | if (local_sdp && (st_code/100==1 || st_code/100==2)) { |
| 1305 | |
| 1306 | if (inv->neg == NULL) { |
| 1307 | status = pjmedia_sdp_neg_create_w_local_offer(inv->pool, local_sdp, |
| 1308 | &inv->neg); |
| 1309 | } else if (pjmedia_sdp_neg_get_state(inv->neg)== |
| 1310 | PJMEDIA_SDP_NEG_STATE_REMOTE_OFFER) |
| 1311 | { |
| 1312 | status = pjmedia_sdp_neg_set_local_answer(inv->pool, inv->neg, |
| 1313 | local_sdp); |
| 1314 | } else { |
| 1315 | |
| 1316 | /* Can not specify local SDP at this state. */ |
| 1317 | pj_assert(0); |
| 1318 | status = PJMEDIA_SDPNEG_EINSTATE; |
| 1319 | } |
| 1320 | |
| 1321 | if (status != PJ_SUCCESS) |
| 1322 | return status; |
| 1323 | |
| 1324 | } |
| 1325 | |
| 1326 | |
| 1327 | /* If SDP negotiator is ready, start negotiation. */ |
| 1328 | if (st_code/100==2 || (st_code/10==18 && st_code!=180)) { |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1329 | |
| 1330 | pjmedia_sdp_neg_state neg_state; |
| 1331 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1332 | /* Start nego when appropriate. */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1333 | neg_state = inv->neg ? pjmedia_sdp_neg_get_state(inv->neg) : |
| 1334 | PJMEDIA_SDP_NEG_STATE_NULL; |
| 1335 | |
| 1336 | if (neg_state == PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) { |
| 1337 | |
| 1338 | status = pjmedia_sdp_neg_get_neg_local(inv->neg, &sdp); |
| 1339 | |
| 1340 | } else if (neg_state == PJMEDIA_SDP_NEG_STATE_WAIT_NEGO && |
| 1341 | pjmedia_sdp_neg_has_local_answer(inv->neg) ) |
| 1342 | { |
| 1343 | |
| 1344 | status = inv_negotiate_sdp(inv); |
| 1345 | if (status != PJ_SUCCESS) |
| 1346 | return status; |
| 1347 | |
| 1348 | status = pjmedia_sdp_neg_get_active_local(inv->neg, &sdp); |
| 1349 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1350 | } |
| 1351 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1352 | /* 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] | 1353 | * Subsequent response will include this SDP. |
| 1354 | */ |
| 1355 | if (sdp) { |
| 1356 | tdata->msg->body = create_sdp_body(tdata->pool, sdp); |
| 1357 | } |
| 1358 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1359 | |
| 1360 | return PJ_SUCCESS; |
| 1361 | } |
| 1362 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1363 | |
| 1364 | /* |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1365 | * Create first response to INVITE |
| 1366 | */ |
| 1367 | PJ_DEF(pj_status_t) pjsip_inv_initial_answer( pjsip_inv_session *inv, |
| 1368 | pjsip_rx_data *rdata, |
| 1369 | int st_code, |
| 1370 | const pj_str_t *st_text, |
| 1371 | const pjmedia_sdp_session *sdp, |
| 1372 | pjsip_tx_data **p_tdata) |
| 1373 | { |
| 1374 | pjsip_tx_data *tdata; |
| 1375 | pj_status_t status; |
| 1376 | |
| 1377 | /* Verify arguments. */ |
| 1378 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1379 | |
| 1380 | /* Must have INVITE transaction. */ |
| 1381 | PJ_ASSERT_RETURN(inv->invite_tsx, PJ_EBUG); |
| 1382 | |
| 1383 | pjsip_dlg_inc_lock(inv->dlg); |
| 1384 | |
| 1385 | /* Create response */ |
| 1386 | status = pjsip_dlg_create_response(inv->dlg, rdata, st_code, st_text, |
| 1387 | &tdata); |
| 1388 | if (status != PJ_SUCCESS) |
| 1389 | goto on_return; |
| 1390 | |
| 1391 | /* Process SDP in answer */ |
| 1392 | status = process_answer(inv, st_code, tdata, sdp); |
| 1393 | if (status != PJ_SUCCESS) { |
| 1394 | pjsip_tx_data_dec_ref(tdata); |
| 1395 | goto on_return; |
| 1396 | } |
| 1397 | |
| 1398 | *p_tdata = tdata; |
| 1399 | |
| 1400 | on_return: |
| 1401 | pjsip_dlg_dec_lock(inv->dlg); |
| 1402 | return status; |
| 1403 | } |
| 1404 | |
| 1405 | |
| 1406 | /* |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1407 | * Answer initial INVITE |
| 1408 | * Re-INVITE will be answered automatically, and will not use this function. |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1409 | */ |
| 1410 | PJ_DEF(pj_status_t) pjsip_inv_answer( pjsip_inv_session *inv, |
| 1411 | int st_code, |
| 1412 | const pj_str_t *st_text, |
| 1413 | const pjmedia_sdp_session *local_sdp, |
| 1414 | pjsip_tx_data **p_tdata ) |
| 1415 | { |
| 1416 | pjsip_tx_data *last_res; |
| 1417 | pj_status_t status; |
| 1418 | |
| 1419 | /* Verify arguments. */ |
| 1420 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1421 | |
| 1422 | /* Must have INVITE transaction. */ |
| 1423 | PJ_ASSERT_RETURN(inv->invite_tsx, PJ_EBUG); |
| 1424 | |
| 1425 | /* INVITE transaction MUST have transmitted a response (e.g. 100) */ |
| 1426 | PJ_ASSERT_RETURN(inv->invite_tsx->last_tx, PJ_EINVALIDOP); |
| 1427 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1428 | pjsip_dlg_inc_lock(inv->dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1429 | |
| 1430 | /* Modify last response. */ |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1431 | last_res = inv->invite_tsx->last_tx; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1432 | status = pjsip_dlg_modify_response(inv->dlg, last_res, st_code, st_text); |
| 1433 | if (status != PJ_SUCCESS) |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1434 | goto on_return; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1435 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1436 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1437 | /* Process SDP in answer */ |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1438 | status = process_answer(inv, st_code, last_res, local_sdp); |
| 1439 | if (status != PJ_SUCCESS) { |
| 1440 | pjsip_tx_data_dec_ref(last_res); |
| 1441 | goto on_return; |
| 1442 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1443 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1444 | |
| 1445 | *p_tdata = last_res; |
| 1446 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1447 | on_return: |
| 1448 | pjsip_dlg_dec_lock(inv->dlg); |
| 1449 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1450 | } |
| 1451 | |
| 1452 | |
| 1453 | /* |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1454 | * Set SDP answer. |
| 1455 | */ |
| 1456 | PJ_DEF(pj_status_t) pjsip_inv_set_sdp_answer( pjsip_inv_session *inv, |
| 1457 | const pjmedia_sdp_session *sdp ) |
| 1458 | { |
| 1459 | pj_status_t status; |
| 1460 | |
| 1461 | PJ_ASSERT_RETURN(inv && sdp, PJ_EINVAL); |
| 1462 | |
| 1463 | pjsip_dlg_inc_lock(inv->dlg); |
| 1464 | status = pjmedia_sdp_neg_set_local_answer( inv->pool, inv->neg, sdp); |
| 1465 | pjsip_dlg_dec_lock(inv->dlg); |
| 1466 | |
| 1467 | return status; |
| 1468 | } |
| 1469 | |
| 1470 | |
| 1471 | /* |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1472 | * End session. |
| 1473 | */ |
| 1474 | PJ_DEF(pj_status_t) pjsip_inv_end_session( pjsip_inv_session *inv, |
| 1475 | int st_code, |
| 1476 | const pj_str_t *st_text, |
| 1477 | pjsip_tx_data **p_tdata ) |
| 1478 | { |
| 1479 | pjsip_tx_data *tdata; |
| 1480 | pj_status_t status; |
| 1481 | |
| 1482 | /* Verify arguments. */ |
| 1483 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1484 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1485 | /* Set cause code. */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 1486 | inv_set_cause(inv, st_code, st_text); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1487 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1488 | /* Create appropriate message. */ |
| 1489 | switch (inv->state) { |
| 1490 | case PJSIP_INV_STATE_CALLING: |
| 1491 | case PJSIP_INV_STATE_EARLY: |
| 1492 | case PJSIP_INV_STATE_INCOMING: |
| 1493 | |
| 1494 | if (inv->role == PJSIP_ROLE_UAC) { |
| 1495 | |
| 1496 | /* For UAC when session has not been confirmed, create CANCEL. */ |
| 1497 | |
| 1498 | /* MUST have the original UAC INVITE transaction. */ |
| 1499 | PJ_ASSERT_RETURN(inv->invite_tsx != NULL, PJ_EBUG); |
| 1500 | |
| 1501 | /* But CANCEL should only be called when we have received a |
| 1502 | * provisional response. If we haven't received any responses, |
| 1503 | * just destroy the transaction. |
| 1504 | */ |
| 1505 | if (inv->invite_tsx->status_code < 100) { |
| 1506 | |
| 1507 | pjsip_tsx_terminate(inv->invite_tsx, 487); |
Benny Prijono | fccab71 | 2006-02-22 22:23:22 +0000 | [diff] [blame] | 1508 | *p_tdata = NULL; |
| 1509 | return PJ_SUCCESS; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1510 | } |
| 1511 | |
| 1512 | /* The CSeq here assumes that the dialog is started with an |
| 1513 | * INVITE session. This may not be correct; dialog can be |
| 1514 | * started as SUBSCRIBE session. |
| 1515 | * So fix this! |
| 1516 | */ |
| 1517 | status = pjsip_endpt_create_cancel(inv->dlg->endpt, |
| 1518 | inv->invite_tsx->last_tx, |
| 1519 | &tdata); |
| 1520 | |
| 1521 | } else { |
| 1522 | |
| 1523 | /* For UAS, send a final response. */ |
| 1524 | tdata = inv->invite_tsx->last_tx; |
| 1525 | PJ_ASSERT_RETURN(tdata != NULL, PJ_EINVALIDOP); |
| 1526 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1527 | //status = pjsip_dlg_modify_response(inv->dlg, tdata, st_code, |
| 1528 | // st_text); |
| 1529 | status = pjsip_inv_answer(inv, st_code, st_text, NULL, &tdata); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1530 | } |
| 1531 | break; |
| 1532 | |
| 1533 | case PJSIP_INV_STATE_CONNECTING: |
| 1534 | case PJSIP_INV_STATE_CONFIRMED: |
| 1535 | /* For established dialog, send BYE */ |
| 1536 | status = pjsip_dlg_create_request(inv->dlg, &pjsip_bye_method, -1, |
| 1537 | &tdata); |
| 1538 | break; |
| 1539 | |
| 1540 | case PJSIP_INV_STATE_DISCONNECTED: |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1541 | /* No need to do anything. */ |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1542 | return PJSIP_ESESSIONTERMINATED; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1543 | |
| 1544 | default: |
| 1545 | pj_assert("!Invalid operation!"); |
| 1546 | return PJ_EINVALIDOP; |
| 1547 | } |
| 1548 | |
| 1549 | if (status != PJ_SUCCESS) |
| 1550 | return status; |
| 1551 | |
| 1552 | |
| 1553 | /* Done */ |
| 1554 | |
| 1555 | *p_tdata = tdata; |
| 1556 | |
| 1557 | return PJ_SUCCESS; |
| 1558 | } |
| 1559 | |
| 1560 | |
| 1561 | /* |
| 1562 | * Create re-INVITE. |
| 1563 | */ |
| 1564 | PJ_DEF(pj_status_t) pjsip_inv_reinvite( pjsip_inv_session *inv, |
| 1565 | const pj_str_t *new_contact, |
| 1566 | const pjmedia_sdp_session *new_offer, |
| 1567 | pjsip_tx_data **p_tdata ) |
| 1568 | { |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1569 | pj_status_t status; |
| 1570 | pjsip_contact_hdr *contact_hdr = NULL; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1571 | |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 1572 | /* Check arguments. */ |
| 1573 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1574 | |
| 1575 | /* Must NOT have a pending INVITE transaction */ |
| 1576 | PJ_ASSERT_RETURN(inv->invite_tsx==NULL, PJ_EINVALIDOP); |
| 1577 | |
| 1578 | |
| 1579 | pjsip_dlg_inc_lock(inv->dlg); |
| 1580 | |
| 1581 | if (new_contact) { |
| 1582 | pj_str_t tmp; |
| 1583 | const pj_str_t STR_CONTACT = { "Contact", 7 }; |
| 1584 | |
| 1585 | pj_strdup_with_null(inv->dlg->pool, &tmp, new_contact); |
| 1586 | contact_hdr = pjsip_parse_hdr(inv->dlg->pool, &STR_CONTACT, |
| 1587 | tmp.ptr, tmp.slen, NULL); |
| 1588 | if (!contact_hdr) { |
| 1589 | status = PJSIP_EINVALIDURI; |
| 1590 | goto on_return; |
| 1591 | } |
| 1592 | } |
| 1593 | |
| 1594 | |
| 1595 | if (new_offer) { |
| 1596 | if (!inv->neg) { |
| 1597 | status = pjmedia_sdp_neg_create_w_local_offer(inv->pool, new_offer, |
| 1598 | &inv->neg); |
| 1599 | if (status != PJ_SUCCESS) |
| 1600 | goto on_return; |
| 1601 | |
| 1602 | } else switch (pjmedia_sdp_neg_get_state(inv->neg)) { |
| 1603 | |
| 1604 | case PJMEDIA_SDP_NEG_STATE_NULL: |
| 1605 | pj_assert(!"Unexpected SDP neg state NULL"); |
| 1606 | status = PJ_EBUG; |
| 1607 | goto on_return; |
| 1608 | |
| 1609 | case PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER: |
| 1610 | PJ_LOG(4,(inv->obj_name, |
| 1611 | "pjsip_inv_reinvite: already have an offer, new " |
| 1612 | "offer is ignored")); |
| 1613 | break; |
| 1614 | |
| 1615 | case PJMEDIA_SDP_NEG_STATE_REMOTE_OFFER: |
| 1616 | status = pjmedia_sdp_neg_set_local_answer(inv->pool, inv->neg, |
| 1617 | new_offer); |
| 1618 | if (status != PJ_SUCCESS) |
| 1619 | goto on_return; |
| 1620 | break; |
| 1621 | |
| 1622 | case PJMEDIA_SDP_NEG_STATE_WAIT_NEGO: |
| 1623 | PJ_LOG(4,(inv->obj_name, |
| 1624 | "pjsip_inv_reinvite: SDP in WAIT_NEGO state, new " |
| 1625 | "offer is ignored")); |
| 1626 | break; |
| 1627 | |
| 1628 | case PJMEDIA_SDP_NEG_STATE_DONE: |
| 1629 | status = pjmedia_sdp_neg_modify_local_offer(inv->pool,inv->neg, |
| 1630 | new_offer); |
| 1631 | if (status != PJ_SUCCESS) |
| 1632 | goto on_return; |
| 1633 | break; |
| 1634 | } |
| 1635 | } |
| 1636 | |
| 1637 | if (contact_hdr) |
| 1638 | inv->dlg->local.contact = contact_hdr; |
| 1639 | |
| 1640 | status = pjsip_inv_invite(inv, p_tdata); |
| 1641 | |
| 1642 | on_return: |
| 1643 | pjsip_dlg_dec_lock(inv->dlg); |
| 1644 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1645 | } |
| 1646 | |
| 1647 | /* |
| 1648 | * Create UPDATE. |
| 1649 | */ |
| 1650 | PJ_DEF(pj_status_t) pjsip_inv_update ( pjsip_inv_session *inv, |
| 1651 | const pj_str_t *new_contact, |
| 1652 | const pjmedia_sdp_session *new_offer, |
| 1653 | pjsip_tx_data **p_tdata ) |
| 1654 | { |
| 1655 | PJ_UNUSED_ARG(inv); |
| 1656 | PJ_UNUSED_ARG(new_contact); |
| 1657 | PJ_UNUSED_ARG(new_offer); |
| 1658 | PJ_UNUSED_ARG(p_tdata); |
| 1659 | |
| 1660 | PJ_TODO(CREATE_UPDATE_REQUEST); |
| 1661 | return PJ_ENOTSUP; |
| 1662 | } |
| 1663 | |
| 1664 | /* |
| 1665 | * Send a request or response message. |
| 1666 | */ |
| 1667 | 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] | 1668 | pjsip_tx_data *tdata) |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1669 | { |
| 1670 | pj_status_t status; |
| 1671 | |
| 1672 | /* Verify arguments. */ |
| 1673 | PJ_ASSERT_RETURN(inv && tdata, PJ_EINVAL); |
| 1674 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 1675 | PJ_LOG(5,(inv->obj_name, "Sending %s", |
| 1676 | pjsip_tx_data_get_info(tdata))); |
| 1677 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1678 | if (tdata->msg->type == PJSIP_REQUEST_MSG) { |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1679 | struct tsx_inv_data *tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1680 | |
Benny Prijono | 64158af | 2006-04-04 11:06:34 +0000 | [diff] [blame] | 1681 | pjsip_dlg_inc_lock(inv->dlg); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1682 | |
Benny Prijono | 64158af | 2006-04-04 11:06:34 +0000 | [diff] [blame] | 1683 | tsx_inv_data = pj_pool_zalloc(inv->pool, sizeof(struct tsx_inv_data)); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1684 | tsx_inv_data->inv = inv; |
| 1685 | |
Benny Prijono | 64158af | 2006-04-04 11:06:34 +0000 | [diff] [blame] | 1686 | pjsip_dlg_dec_lock(inv->dlg); |
| 1687 | |
| 1688 | status = pjsip_dlg_send_request(inv->dlg, tdata, mod_inv.mod.id, |
| 1689 | tsx_inv_data); |
| 1690 | if (status != PJ_SUCCESS) |
| 1691 | return status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1692 | |
| 1693 | } else { |
| 1694 | pjsip_cseq_hdr *cseq; |
| 1695 | |
| 1696 | /* Can only do this to send response to original INVITE |
| 1697 | * request. |
| 1698 | */ |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1699 | PJ_ASSERT_RETURN((cseq=pjsip_msg_find_hdr(tdata->msg, PJSIP_H_CSEQ, NULL))!=NULL |
| 1700 | && (cseq->cseq == inv->invite_tsx->cseq), |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1701 | PJ_EINVALIDOP); |
| 1702 | |
| 1703 | status = pjsip_dlg_send_response(inv->dlg, inv->invite_tsx, tdata); |
| 1704 | if (status != PJ_SUCCESS) |
| 1705 | return status; |
| 1706 | } |
| 1707 | |
| 1708 | /* Done (?) */ |
| 1709 | return PJ_SUCCESS; |
| 1710 | } |
| 1711 | |
| 1712 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1713 | /* |
| 1714 | * Respond to incoming CANCEL request. |
| 1715 | */ |
| 1716 | static void inv_respond_incoming_cancel(pjsip_inv_session *inv, |
| 1717 | pjsip_transaction *cancel_tsx, |
| 1718 | pjsip_rx_data *rdata) |
| 1719 | { |
| 1720 | pjsip_tx_data *tdata; |
| 1721 | pjsip_transaction *invite_tsx; |
| 1722 | pj_str_t key; |
| 1723 | pj_status_t status; |
| 1724 | |
| 1725 | /* See if we have matching INVITE server transaction: */ |
| 1726 | |
| 1727 | pjsip_tsx_create_key(rdata->tp_info.pool, &key, PJSIP_ROLE_UAS, |
| 1728 | &pjsip_invite_method, rdata); |
| 1729 | invite_tsx = pjsip_tsx_layer_find_tsx(&key, PJ_TRUE); |
| 1730 | |
| 1731 | if (invite_tsx == NULL) { |
| 1732 | |
| 1733 | /* Invite transaction not found! |
| 1734 | * Respond CANCEL with 491 (RFC 3261 Section 9.2 page 42) |
| 1735 | */ |
| 1736 | status = pjsip_dlg_create_response( inv->dlg, rdata, 200, NULL, |
| 1737 | &tdata); |
| 1738 | |
| 1739 | } else { |
| 1740 | /* Always answer CANCEL will 200 (OK) regardless of |
| 1741 | * the state of the INVITE transaction. |
| 1742 | */ |
| 1743 | status = pjsip_dlg_create_response( inv->dlg, rdata, 200, NULL, |
| 1744 | &tdata); |
| 1745 | } |
| 1746 | |
| 1747 | /* See if we have created the response successfully. */ |
| 1748 | if (status != PJ_SUCCESS) return; |
| 1749 | |
| 1750 | /* Send the CANCEL response */ |
| 1751 | status = pjsip_dlg_send_response(inv->dlg, cancel_tsx, tdata); |
| 1752 | if (status != PJ_SUCCESS) return; |
| 1753 | |
| 1754 | |
| 1755 | /* See if we need to terminate the UAS INVITE transaction |
| 1756 | * with 487 (Request Terminated) response. |
| 1757 | */ |
| 1758 | if (invite_tsx && invite_tsx->status_code < 200) { |
| 1759 | |
| 1760 | pj_assert(invite_tsx->last_tx != NULL); |
| 1761 | |
| 1762 | tdata = invite_tsx->last_tx; |
| 1763 | |
| 1764 | status = pjsip_dlg_modify_response(inv->dlg, tdata, 487, NULL); |
| 1765 | if (status == PJ_SUCCESS) |
| 1766 | pjsip_dlg_send_response(inv->dlg, invite_tsx, tdata); |
| 1767 | } |
| 1768 | |
| 1769 | if (invite_tsx) |
| 1770 | pj_mutex_unlock(invite_tsx->mutex); |
| 1771 | } |
| 1772 | |
| 1773 | |
| 1774 | /* |
| 1775 | * Respond to incoming BYE request. |
| 1776 | */ |
| 1777 | static void inv_respond_incoming_bye( pjsip_inv_session *inv, |
| 1778 | pjsip_transaction *bye_tsx, |
| 1779 | pjsip_rx_data *rdata, |
| 1780 | pjsip_event *e ) |
| 1781 | { |
| 1782 | pj_status_t status; |
| 1783 | pjsip_tx_data *tdata; |
| 1784 | |
| 1785 | /* Respond BYE with 200: */ |
| 1786 | |
| 1787 | status = pjsip_dlg_create_response(inv->dlg, rdata, 200, NULL, &tdata); |
| 1788 | if (status != PJ_SUCCESS) return; |
| 1789 | |
| 1790 | status = pjsip_dlg_send_response(inv->dlg, bye_tsx, tdata); |
| 1791 | if (status != PJ_SUCCESS) return; |
| 1792 | |
| 1793 | /* Terminate session: */ |
| 1794 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1795 | if (inv->state != PJSIP_INV_STATE_DISCONNECTED) { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 1796 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1797 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 1798 | } |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1799 | } |
| 1800 | |
| 1801 | /* |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1802 | * Respond to BYE request. |
| 1803 | */ |
| 1804 | static void inv_handle_bye_response( pjsip_inv_session *inv, |
| 1805 | pjsip_transaction *tsx, |
| 1806 | pjsip_rx_data *rdata, |
| 1807 | pjsip_event *e ) |
| 1808 | { |
| 1809 | pj_status_t status; |
| 1810 | |
| 1811 | if (e->body.tsx_state.type != PJSIP_EVENT_RX_MSG) { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 1812 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1813 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 1814 | return; |
| 1815 | } |
| 1816 | |
| 1817 | /* Handle 401/407 challenge. */ |
| 1818 | if (tsx->status_code == 401 || tsx->status_code == 407) { |
| 1819 | |
| 1820 | pjsip_tx_data *tdata; |
| 1821 | |
| 1822 | status = pjsip_auth_clt_reinit_req( &inv->dlg->auth_sess, |
| 1823 | rdata, |
| 1824 | tsx->last_tx, |
| 1825 | &tdata); |
| 1826 | |
| 1827 | if (status != PJ_SUCCESS) { |
| 1828 | |
| 1829 | /* Does not have proper credentials. |
| 1830 | * End the session anyway. |
| 1831 | */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 1832 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1833 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 1834 | |
| 1835 | } else { |
| 1836 | /* Re-send BYE. */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 1837 | status = pjsip_inv_send_msg(inv, tdata); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1838 | } |
| 1839 | |
| 1840 | } else { |
| 1841 | |
| 1842 | /* End the session. */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 1843 | inv_set_cause(inv, PJSIP_SC_OK, NULL); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1844 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 1845 | } |
| 1846 | |
| 1847 | } |
| 1848 | |
| 1849 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1850 | * State NULL is before anything is sent/received. |
| 1851 | */ |
| 1852 | 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] | 1853 | { |
| 1854 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 1855 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 1856 | |
| 1857 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 1858 | |
| 1859 | if (tsx->method.id == PJSIP_INVITE_METHOD) { |
| 1860 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1861 | /* Keep the initial INVITE transaction. */ |
| 1862 | if (inv->invite_tsx == NULL) |
| 1863 | inv->invite_tsx = tsx; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1864 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1865 | if (dlg->role == PJSIP_ROLE_UAC) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1866 | |
| 1867 | switch (tsx->state) { |
| 1868 | case PJSIP_TSX_STATE_CALLING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1869 | inv_set_state(inv, PJSIP_INV_STATE_CALLING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1870 | break; |
| 1871 | default: |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1872 | inv_on_state_calling(inv, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1873 | break; |
| 1874 | } |
| 1875 | |
| 1876 | } else { |
| 1877 | switch (tsx->state) { |
| 1878 | case PJSIP_TSX_STATE_TRYING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1879 | inv_set_state(inv, PJSIP_INV_STATE_INCOMING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1880 | break; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1881 | case PJSIP_TSX_STATE_PROCEEDING: |
| 1882 | inv_set_state(inv, PJSIP_INV_STATE_INCOMING, e); |
| 1883 | if (tsx->status_code > 100) |
| 1884 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
| 1885 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1886 | default: |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1887 | inv_on_state_incoming(inv, e); |
| 1888 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1889 | } |
| 1890 | } |
| 1891 | |
| 1892 | } else { |
| 1893 | pj_assert(!"Unexpected transaction type"); |
| 1894 | } |
| 1895 | } |
| 1896 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1897 | /* |
| 1898 | * State CALLING is after sending initial INVITE request but before |
| 1899 | * any response (with tag) is received. |
| 1900 | */ |
| 1901 | 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] | 1902 | { |
| 1903 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 1904 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1905 | pj_status_t status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1906 | |
| 1907 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 1908 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1909 | if (tsx == inv->invite_tsx) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1910 | |
| 1911 | switch (tsx->state) { |
| 1912 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 1913 | case PJSIP_TSX_STATE_CALLING: |
| 1914 | inv_set_state(inv, PJSIP_INV_STATE_CALLING, e); |
| 1915 | break; |
| 1916 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1917 | case PJSIP_TSX_STATE_PROCEEDING: |
| 1918 | if (dlg->remote.info->tag.slen) { |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1919 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1920 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1921 | |
| 1922 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 1923 | e->body.tsx_state.src.rdata); |
| 1924 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1925 | } else { |
| 1926 | /* Ignore 100 (Trying) response, as it doesn't change |
| 1927 | * session state. It only ceases retransmissions. |
| 1928 | */ |
| 1929 | } |
| 1930 | break; |
| 1931 | |
| 1932 | case PJSIP_TSX_STATE_COMPLETED: |
| 1933 | if (tsx->status_code/100 == 2) { |
| 1934 | |
| 1935 | /* This should not happen. |
| 1936 | * When transaction receives 2xx, it should be terminated |
| 1937 | */ |
| 1938 | pj_assert(0); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1939 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1940 | |
| 1941 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 1942 | e->body.tsx_state.src.rdata); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1943 | |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1944 | } else if (tsx->status_code==401 || tsx->status_code==407) { |
| 1945 | |
| 1946 | /* Handle authentication failure: |
| 1947 | * Resend the request with Authorization header. |
| 1948 | */ |
| 1949 | pjsip_tx_data *tdata; |
| 1950 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1951 | status = pjsip_auth_clt_reinit_req(&inv->dlg->auth_sess, |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1952 | e->body.tsx_state.src.rdata, |
| 1953 | tsx->last_tx, |
| 1954 | &tdata); |
| 1955 | |
| 1956 | if (status != PJ_SUCCESS) { |
| 1957 | |
| 1958 | /* Does not have proper credentials. |
| 1959 | * End the session. |
| 1960 | */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 1961 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1962 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1963 | |
| 1964 | } else { |
| 1965 | |
| 1966 | /* Restart session. */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1967 | inv->state = PJSIP_INV_STATE_NULL; |
| 1968 | inv->invite_tsx = NULL; |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1969 | |
| 1970 | /* Send the request. */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 1971 | status = pjsip_inv_send_msg(inv, tdata); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1972 | } |
| 1973 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1974 | } else { |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1975 | |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 1976 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1977 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1978 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1979 | } |
| 1980 | break; |
| 1981 | |
| 1982 | case PJSIP_TSX_STATE_TERMINATED: |
| 1983 | /* INVITE transaction can be terminated either because UAC |
| 1984 | * transaction received 2xx response or because of transport |
| 1985 | * error. |
| 1986 | */ |
| 1987 | if (tsx->status_code/100 == 2) { |
| 1988 | /* This must be receipt of 2xx response */ |
| 1989 | |
| 1990 | /* Set state to CONNECTING */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1991 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1992 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1993 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 1994 | e->body.tsx_state.src.rdata); |
| 1995 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1996 | /* Send ACK */ |
| 1997 | pj_assert(e->body.tsx_state.type == PJSIP_EVENT_RX_MSG); |
| 1998 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1999 | inv_send_ack(inv, e->body.tsx_state.src.rdata); |
Benny Prijono | 5eff043 | 2006-02-09 14:14:21 +0000 | [diff] [blame] | 2000 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2001 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2002 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2003 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2004 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2005 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2006 | } |
| 2007 | break; |
| 2008 | |
Benny Prijono | 34a404e | 2006-02-09 14:38:30 +0000 | [diff] [blame] | 2009 | default: |
| 2010 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2011 | } |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2012 | |
| 2013 | } else if (inv->role == PJSIP_ROLE_UAC && |
| 2014 | tsx->role == PJSIP_ROLE_UAC && |
| 2015 | tsx->method.id == PJSIP_CANCEL_METHOD) |
| 2016 | { |
| 2017 | /* |
| 2018 | * Handle case when outgoing CANCEL is answered with 481 (Call/ |
| 2019 | * Transaction Does Not Exist), 408, or when it's timed out. In these |
| 2020 | * cases, disconnect session (i.e. dialog usage only). |
| 2021 | */ |
| 2022 | if (tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST || |
| 2023 | tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT || |
| 2024 | tsx->status_code == PJSIP_SC_TSX_TIMEOUT || |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2025 | tsx->status_code == PJSIP_SC_TSX_TRANSPORT_ERROR) |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2026 | { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2027 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2028 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2029 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2030 | } |
| 2031 | } |
| 2032 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2033 | /* |
| 2034 | * State INCOMING is after we received the request, but before |
| 2035 | * responses with tag are sent. |
| 2036 | */ |
| 2037 | 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] | 2038 | { |
| 2039 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2040 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2041 | |
| 2042 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2043 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2044 | if (tsx == inv->invite_tsx) { |
| 2045 | |
| 2046 | /* |
| 2047 | * Handle the INVITE state transition. |
| 2048 | */ |
| 2049 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2050 | switch (tsx->state) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2051 | |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2052 | case PJSIP_TSX_STATE_TRYING: |
| 2053 | inv_set_state(inv, PJSIP_INV_STATE_INCOMING, e); |
| 2054 | break; |
| 2055 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2056 | case PJSIP_TSX_STATE_PROCEEDING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2057 | /* |
| 2058 | * Transaction sent provisional response. |
| 2059 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2060 | if (tsx->status_code > 100) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2061 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2062 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2063 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2064 | case PJSIP_TSX_STATE_COMPLETED: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2065 | /* |
| 2066 | * Transaction sent final response. |
| 2067 | */ |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2068 | if (tsx->status_code/100 == 2) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2069 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2070 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2071 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2072 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2073 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2074 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2075 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2076 | case PJSIP_TSX_STATE_TERMINATED: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2077 | /* |
| 2078 | * This happens on transport error (e.g. failed to send |
| 2079 | * response) |
| 2080 | */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2081 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2082 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2083 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2084 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2085 | default: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2086 | pj_assert(!"Unexpected INVITE state"); |
| 2087 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2088 | } |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2089 | |
| 2090 | } else if (tsx->method.id == PJSIP_CANCEL_METHOD && |
| 2091 | tsx->role == PJSIP_ROLE_UAS && |
| 2092 | tsx->state < PJSIP_TSX_STATE_COMPLETED && |
| 2093 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG ) |
| 2094 | { |
| 2095 | |
| 2096 | /* |
| 2097 | * Handle incoming CANCEL request. |
| 2098 | */ |
| 2099 | |
| 2100 | inv_respond_incoming_cancel(inv, tsx, e->body.tsx_state.src.rdata); |
| 2101 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2102 | } |
| 2103 | } |
| 2104 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2105 | /* |
| 2106 | * State EARLY is for both UAS and UAC, after response with To tag |
| 2107 | * is sent/received. |
| 2108 | */ |
| 2109 | 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] | 2110 | { |
| 2111 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2112 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2113 | |
| 2114 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2115 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2116 | if (tsx == inv->invite_tsx) { |
| 2117 | |
| 2118 | /* |
| 2119 | * Handle the INVITE state progress. |
| 2120 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2121 | |
| 2122 | switch (tsx->state) { |
| 2123 | |
| 2124 | case PJSIP_TSX_STATE_PROCEEDING: |
| 2125 | /* Send/received another provisional response. */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2126 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2127 | |
| 2128 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 2129 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2130 | e->body.tsx_state.src.rdata); |
| 2131 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2132 | break; |
| 2133 | |
| 2134 | case PJSIP_TSX_STATE_COMPLETED: |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2135 | if (tsx->status_code/100 == 2) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2136 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2137 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 2138 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2139 | e->body.tsx_state.src.rdata); |
| 2140 | } |
| 2141 | |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2142 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2143 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2144 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | d4e0abd | 2006-03-05 11:53:36 +0000 | [diff] [blame] | 2145 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2146 | break; |
| 2147 | |
Benny Prijono | f319507 | 2006-02-14 21:15:30 +0000 | [diff] [blame] | 2148 | case PJSIP_TSX_STATE_CONFIRMED: |
| 2149 | /* For some reason can go here */ |
| 2150 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2151 | case PJSIP_TSX_STATE_TERMINATED: |
| 2152 | /* INVITE transaction can be terminated either because UAC |
| 2153 | * transaction received 2xx response or because of transport |
| 2154 | * error. |
| 2155 | */ |
| 2156 | if (tsx->status_code/100 == 2) { |
| 2157 | |
| 2158 | /* This must be receipt of 2xx response */ |
| 2159 | |
| 2160 | /* Set state to CONNECTING */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2161 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2162 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2163 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 2164 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2165 | e->body.tsx_state.src.rdata); |
| 2166 | } |
| 2167 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2168 | /* if UAC, send ACK and move state to confirmed. */ |
| 2169 | if (tsx->role == PJSIP_ROLE_UAC) { |
| 2170 | pj_assert(e->body.tsx_state.type == PJSIP_EVENT_RX_MSG); |
| 2171 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2172 | inv_send_ack(inv, e->body.tsx_state.src.rdata); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2173 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2174 | } |
| 2175 | |
| 2176 | } else { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2177 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2178 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2179 | } |
| 2180 | break; |
| 2181 | |
| 2182 | default: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2183 | pj_assert(!"Unexpected INVITE tsx state"); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2184 | } |
| 2185 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2186 | } else if (inv->role == PJSIP_ROLE_UAS && |
| 2187 | tsx->role == PJSIP_ROLE_UAS && |
| 2188 | tsx->method.id == PJSIP_CANCEL_METHOD && |
| 2189 | tsx->state < PJSIP_TSX_STATE_COMPLETED && |
| 2190 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG ) |
| 2191 | { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2192 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2193 | /* |
| 2194 | * Handle incoming CANCEL request. |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2195 | */ |
| 2196 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2197 | inv_respond_incoming_cancel(inv, tsx, e->body.tsx_state.src.rdata); |
| 2198 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2199 | } else if (inv->role == PJSIP_ROLE_UAC && |
| 2200 | tsx->role == PJSIP_ROLE_UAC && |
| 2201 | tsx->method.id == PJSIP_CANCEL_METHOD) |
| 2202 | { |
| 2203 | /* |
| 2204 | * Handle case when outgoing CANCEL is answered with 481 (Call/ |
| 2205 | * Transaction Does Not Exist), 408, or when it's timed out. In these |
| 2206 | * cases, disconnect session (i.e. dialog usage only). |
| 2207 | */ |
| 2208 | if (tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST || |
| 2209 | tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT || |
| 2210 | tsx->status_code == PJSIP_SC_TSX_TIMEOUT || |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2211 | tsx->status_code == PJSIP_SC_TSX_TRANSPORT_ERROR) |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2212 | { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2213 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame] | 2214 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2215 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2216 | } |
| 2217 | } |
| 2218 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2219 | /* |
| 2220 | * State CONNECTING is after 2xx response to INVITE is sent/received. |
| 2221 | */ |
| 2222 | 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] | 2223 | { |
| 2224 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2225 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2226 | |
| 2227 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2228 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2229 | if (tsx == inv->invite_tsx) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2230 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2231 | /* |
| 2232 | * Handle INVITE state progression. |
| 2233 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2234 | switch (tsx->state) { |
| 2235 | |
| 2236 | case PJSIP_TSX_STATE_CONFIRMED: |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2237 | if (tsx->status_code/100 == 2) |
| 2238 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2239 | break; |
| 2240 | |
| 2241 | case PJSIP_TSX_STATE_TERMINATED: |
| 2242 | /* INVITE transaction can be terminated either because UAC |
| 2243 | * transaction received 2xx response or because of transport |
| 2244 | * error. |
| 2245 | */ |
| 2246 | if (tsx->status_code/100 != 2) { |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2247 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2248 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2249 | } |
| 2250 | break; |
| 2251 | |
| 2252 | case PJSIP_TSX_STATE_DESTROYED: |
| 2253 | /* Do nothing. */ |
| 2254 | break; |
| 2255 | |
| 2256 | default: |
| 2257 | pj_assert(!"Unexpected state"); |
| 2258 | } |
| 2259 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2260 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 2261 | tsx->method.id == PJSIP_BYE_METHOD && |
| 2262 | tsx->status_code < 200 && |
| 2263 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 2264 | { |
| 2265 | |
| 2266 | /* |
| 2267 | * Handle incoming BYE. |
| 2268 | */ |
| 2269 | |
| 2270 | inv_respond_incoming_bye( inv, tsx, e->body.tsx_state.src.rdata, e ); |
| 2271 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2272 | } else if (tsx->method.id == PJSIP_BYE_METHOD && |
| 2273 | tsx->role == PJSIP_ROLE_UAC && |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2274 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 2275 | tsx->state == PJSIP_TSX_STATE_TERMINATED)) |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2276 | { |
| 2277 | |
| 2278 | /* |
| 2279 | * Outgoing BYE |
| 2280 | */ |
| 2281 | inv_handle_bye_response( inv, tsx, e->body.tsx_state.src.rdata, e); |
| 2282 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2283 | } |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 2284 | else if (tsx->method.id == PJSIP_CANCEL_METHOD && |
| 2285 | tsx->role == PJSIP_ROLE_UAS && |
| 2286 | tsx->status_code < 200 && |
| 2287 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 2288 | { |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2289 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 2290 | /* |
| 2291 | * Handle strandled incoming CANCEL. |
| 2292 | */ |
| 2293 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
| 2294 | pjsip_tx_data *tdata; |
| 2295 | pj_status_t status; |
| 2296 | |
| 2297 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 2298 | if (status != PJ_SUCCESS) return; |
| 2299 | |
| 2300 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 2301 | if (status != PJ_SUCCESS) return; |
| 2302 | |
| 2303 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2304 | } |
| 2305 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2306 | /* |
| 2307 | * State CONFIRMED is after ACK is sent/received. |
| 2308 | */ |
| 2309 | 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] | 2310 | { |
| 2311 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2312 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 2313 | |
| 2314 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2315 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2316 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2317 | if (tsx->method.id == PJSIP_BYE_METHOD && |
| 2318 | tsx->role == PJSIP_ROLE_UAC && |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2319 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 2320 | tsx->state == PJSIP_TSX_STATE_TERMINATED)) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2321 | { |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2322 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2323 | /* |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 2324 | * Outgoing BYE |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2325 | */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2326 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 2327 | 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] | 2328 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2329 | } |
| 2330 | else if (tsx->method.id == PJSIP_BYE_METHOD && |
| 2331 | tsx->role == PJSIP_ROLE_UAS && |
| 2332 | tsx->status_code < 200 && |
| 2333 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 2334 | { |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 2335 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2336 | /* |
| 2337 | * Handle incoming BYE. |
| 2338 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2339 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2340 | inv_respond_incoming_bye( inv, tsx, e->body.tsx_state.src.rdata, e ); |
| 2341 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2342 | } |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 2343 | else if (tsx->method.id == PJSIP_CANCEL_METHOD && |
| 2344 | tsx->role == PJSIP_ROLE_UAS && |
| 2345 | tsx->status_code < 200 && |
| 2346 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 2347 | { |
| 2348 | |
| 2349 | /* |
| 2350 | * Handle strandled incoming CANCEL. |
| 2351 | */ |
| 2352 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
| 2353 | pjsip_tx_data *tdata; |
| 2354 | pj_status_t status; |
| 2355 | |
| 2356 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 2357 | if (status != PJ_SUCCESS) return; |
| 2358 | |
| 2359 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 2360 | if (status != PJ_SUCCESS) return; |
| 2361 | |
| 2362 | } |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 2363 | else if (tsx->method.id == PJSIP_INVITE_METHOD && |
| 2364 | tsx->role == PJSIP_ROLE_UAS) |
| 2365 | { |
| 2366 | |
| 2367 | /* |
| 2368 | * Handle incoming re-INVITE |
| 2369 | */ |
| 2370 | if (tsx->state == PJSIP_TSX_STATE_TRYING) { |
| 2371 | |
| 2372 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
| 2373 | pjsip_tx_data *tdata; |
| 2374 | pj_status_t status; |
| 2375 | |
| 2376 | /* Check if we have INVITE pending. */ |
| 2377 | if (inv->invite_tsx && inv->invite_tsx!=tsx) { |
| 2378 | |
| 2379 | /* Can not receive re-INVITE while another one is pending. */ |
| 2380 | status = pjsip_dlg_create_response( inv->dlg, rdata, 500, NULL, |
| 2381 | &tdata); |
| 2382 | if (status != PJ_SUCCESS) |
| 2383 | return; |
| 2384 | |
| 2385 | status = pjsip_dlg_send_response( inv->dlg, tsx, tdata); |
| 2386 | |
| 2387 | |
| 2388 | return; |
| 2389 | } |
| 2390 | |
| 2391 | /* Save the invite transaction. */ |
| 2392 | inv->invite_tsx = tsx; |
| 2393 | |
| 2394 | /* Process SDP in incoming message. */ |
| 2395 | status = inv_check_sdp_in_incoming_msg(inv, tsx, rdata); |
| 2396 | |
| 2397 | if (status != PJ_SUCCESS) { |
| 2398 | |
| 2399 | /* Not Acceptable */ |
| 2400 | const pjsip_hdr *accept; |
| 2401 | |
| 2402 | status = pjsip_dlg_create_response(inv->dlg, rdata, |
| 2403 | 488, NULL, &tdata); |
| 2404 | if (status != PJ_SUCCESS) |
| 2405 | return; |
| 2406 | |
| 2407 | |
| 2408 | accept = pjsip_endpt_get_capability(dlg->endpt, PJSIP_H_ACCEPT, |
| 2409 | NULL); |
| 2410 | if (accept) { |
| 2411 | pjsip_msg_add_hdr(tdata->msg, |
| 2412 | pjsip_hdr_clone(tdata->pool, accept)); |
| 2413 | } |
| 2414 | |
| 2415 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 2416 | |
| 2417 | return; |
| 2418 | } |
| 2419 | |
| 2420 | /* Create 2xx ANSWER */ |
| 2421 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 2422 | if (status != PJ_SUCCESS) |
| 2423 | return; |
| 2424 | |
| 2425 | /* Process SDP in the answer */ |
Benny Prijono | 64f851e | 2006-02-23 13:49:28 +0000 | [diff] [blame] | 2426 | status = process_answer(inv, 200, tdata, NULL); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 2427 | |
Benny Prijono | 1d9b9a4 | 2006-09-25 13:40:12 +0000 | [diff] [blame] | 2428 | if (status != PJ_SUCCESS) { |
| 2429 | /* |
| 2430 | * SDP negotiation has failed. |
| 2431 | */ |
| 2432 | pj_status_t rc; |
| 2433 | pj_str_t reason; |
| 2434 | |
| 2435 | /* Delete the 2xx answer */ |
| 2436 | pjsip_tx_data_dec_ref(tdata); |
| 2437 | |
| 2438 | /* Create 500 response */ |
| 2439 | reason = pj_str("SDP negotiation failed"); |
| 2440 | rc = pjsip_dlg_create_response(dlg, rdata, 500, &reason, |
| 2441 | &tdata); |
| 2442 | if (rc == PJ_SUCCESS) { |
| 2443 | pjsip_warning_hdr *w; |
| 2444 | const pj_str_t *endpt_name; |
| 2445 | |
| 2446 | endpt_name = pjsip_endpt_name(dlg->endpt); |
| 2447 | w = pjsip_warning_hdr_create_from_status(tdata->pool, |
| 2448 | endpt_name, |
| 2449 | status); |
| 2450 | if (w) |
| 2451 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)w); |
| 2452 | |
| 2453 | pjsip_inv_send_msg(inv, tdata); |
| 2454 | } |
| 2455 | return; |
| 2456 | } |
| 2457 | |
| 2458 | /* Send 2xx regardless of the status of negotiation */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 2459 | status = pjsip_inv_send_msg(inv, tdata); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 2460 | |
| 2461 | } |
| 2462 | |
| 2463 | } |
| 2464 | else if (tsx->method.id == PJSIP_INVITE_METHOD && |
| 2465 | tsx->role == PJSIP_ROLE_UAC) |
| 2466 | { |
| 2467 | /* |
| 2468 | * Handle outgoing re-INVITE |
| 2469 | */ |
| 2470 | if (tsx->state == PJSIP_TSX_STATE_TERMINATED && |
| 2471 | tsx->status_code/100 == 2) |
| 2472 | { |
| 2473 | |
| 2474 | /* Re-INVITE was accepted. */ |
| 2475 | |
| 2476 | /* Process SDP */ |
| 2477 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 2478 | e->body.tsx_state.src.rdata); |
| 2479 | |
| 2480 | /* Send ACK */ |
| 2481 | inv_send_ack(inv, e->body.tsx_state.src.rdata); |
| 2482 | |
| 2483 | } else if (tsx->state == PJSIP_TSX_STATE_COMPLETED && |
| 2484 | (tsx->status_code==401 || tsx->status_code==407)) |
| 2485 | { |
| 2486 | pjsip_tx_data *tdata; |
| 2487 | pj_status_t status; |
| 2488 | |
| 2489 | /* Handle authentication challenge. */ |
| 2490 | status = pjsip_auth_clt_reinit_req( &dlg->auth_sess, |
| 2491 | e->body.tsx_state.src.rdata, |
| 2492 | tsx->last_tx, |
| 2493 | &tdata); |
| 2494 | if (status != PJ_SUCCESS) |
| 2495 | return; |
| 2496 | |
| 2497 | /* Send re-INVITE */ |
Benny Prijono | e8b0d3b | 2006-03-17 17:57:52 +0000 | [diff] [blame] | 2498 | status = pjsip_inv_send_msg( inv, tdata); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 2499 | |
| 2500 | } else if (tsx->status_code==PJSIP_SC_CALL_TSX_DOES_NOT_EXIST || |
| 2501 | tsx->status_code==PJSIP_SC_REQUEST_TIMEOUT || |
| 2502 | tsx->status_code >= 700) |
| 2503 | { |
| 2504 | /* |
| 2505 | * Handle responses that terminates dialog. |
| 2506 | */ |
Benny Prijono | 0b6340c | 2006-06-13 22:21:23 +0000 | [diff] [blame] | 2507 | inv_set_cause(inv, tsx->status_code, &tsx->status_text); |
Benny Prijono | 26ff906 | 2006-02-21 23:47:00 +0000 | [diff] [blame] | 2508 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 2509 | } |
| 2510 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2511 | } |
| 2512 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2513 | /* |
| 2514 | * After session has been terminated, but before dialog is destroyed |
| 2515 | * (because dialog has other usages, or because dialog is waiting for |
| 2516 | * the last transaction to terminate). |
| 2517 | */ |
| 2518 | 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] | 2519 | { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2520 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 2521 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2522 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2523 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 2524 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 2525 | if (tsx->role == PJSIP_ROLE_UAS && |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2526 | tsx->status_code < 200 && |
| 2527 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 2528 | { |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 2529 | pjsip_rx_data *rdata = e->body.tsx_state.src.rdata; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2530 | |
| 2531 | /* |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 2532 | * Respond BYE with 200/OK |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2533 | */ |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 2534 | if (tsx->method.id == PJSIP_BYE_METHOD) { |
| 2535 | inv_respond_incoming_bye( inv, tsx, rdata, e ); |
| 2536 | } else if (tsx->method.id == PJSIP_CANCEL_METHOD) { |
| 2537 | /* |
| 2538 | * Respond CANCEL with 200/OK too. |
| 2539 | */ |
| 2540 | pjsip_tx_data *tdata; |
| 2541 | pj_status_t status; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2542 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 2543 | status = pjsip_dlg_create_response(dlg, rdata, 200, NULL, &tdata); |
| 2544 | if (status != PJ_SUCCESS) return; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2545 | |
Benny Prijono | 7012722 | 2006-07-02 14:53:05 +0000 | [diff] [blame] | 2546 | status = pjsip_dlg_send_response(dlg, tsx, tdata); |
| 2547 | if (status != PJ_SUCCESS) return; |
| 2548 | |
| 2549 | } |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 2550 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 2551 | } |
| 2552 | |