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 | |
| 36 | /* |
| 37 | * Static prototypes. |
| 38 | */ |
| 39 | static pj_status_t mod_inv_load(pjsip_endpoint *endpt); |
| 40 | static pj_status_t mod_inv_unload(void); |
| 41 | static pj_bool_t mod_inv_on_rx_request(pjsip_rx_data *rdata); |
| 42 | static pj_bool_t mod_inv_on_rx_response(pjsip_rx_data *rdata); |
| 43 | static void mod_inv_on_tsx_state(pjsip_transaction*, pjsip_event*); |
| 44 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 45 | static void inv_on_state_null( pjsip_inv_session *inv, pjsip_event *e); |
| 46 | static void inv_on_state_calling( pjsip_inv_session *inv, pjsip_event *e); |
| 47 | static void inv_on_state_incoming( pjsip_inv_session *inv, pjsip_event *e); |
| 48 | static void inv_on_state_early( pjsip_inv_session *inv, pjsip_event *e); |
| 49 | static void inv_on_state_connecting( pjsip_inv_session *inv, pjsip_event *e); |
| 50 | static void inv_on_state_confirmed( pjsip_inv_session *inv, pjsip_event *e); |
| 51 | 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] | 52 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 53 | static void (*inv_state_handler[])( pjsip_inv_session *inv, pjsip_event *e) = |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 54 | { |
| 55 | &inv_on_state_null, |
| 56 | &inv_on_state_calling, |
| 57 | &inv_on_state_incoming, |
| 58 | &inv_on_state_early, |
| 59 | &inv_on_state_connecting, |
| 60 | &inv_on_state_confirmed, |
| 61 | &inv_on_state_disconnected, |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 62 | }; |
| 63 | |
| 64 | static struct mod_inv |
| 65 | { |
| 66 | pjsip_module mod; |
| 67 | pjsip_endpoint *endpt; |
| 68 | pjsip_inv_callback cb; |
| 69 | pjsip_module *app_user; |
| 70 | } mod_inv = |
| 71 | { |
| 72 | { |
| 73 | NULL, NULL, /* prev, next. */ |
| 74 | { "mod-invite", 10 }, /* Name. */ |
| 75 | -1, /* Id */ |
| 76 | PJSIP_MOD_PRIORITY_APPLICATION-1, /* Priority */ |
| 77 | NULL, /* User data. */ |
| 78 | &mod_inv_load, /* load() */ |
| 79 | NULL, /* start() */ |
| 80 | NULL, /* stop() */ |
| 81 | &mod_inv_unload, /* unload() */ |
| 82 | &mod_inv_on_rx_request, /* on_rx_request() */ |
| 83 | &mod_inv_on_rx_response, /* on_rx_response() */ |
| 84 | NULL, /* on_tx_request. */ |
| 85 | NULL, /* on_tx_response() */ |
| 86 | &mod_inv_on_tsx_state, /* on_tsx_state() */ |
| 87 | } |
| 88 | }; |
| 89 | |
| 90 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 91 | /* Invite session data to be attached to transaction. */ |
| 92 | struct tsx_inv_data |
| 93 | { |
| 94 | pjsip_inv_session *inv; |
| 95 | pj_bool_t sdp_done; |
| 96 | }; |
| 97 | |
| 98 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 99 | /* |
| 100 | * Module load() |
| 101 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 102 | static pj_status_t mod_inv_load(pjsip_endpoint *endpt) |
| 103 | { |
| 104 | pj_str_t allowed[] = {{"INVITE", 6}, {"ACK",3}, {"BYE",3}, {"CANCEL",6}}; |
| 105 | |
| 106 | /* Register supported methods: INVITE, ACK, BYE, CANCEL */ |
| 107 | pjsip_endpt_add_capability(endpt, &mod_inv.mod, PJSIP_H_ALLOW, NULL, |
| 108 | PJ_ARRAY_SIZE(allowed), allowed); |
| 109 | |
| 110 | return PJ_SUCCESS; |
| 111 | } |
| 112 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 113 | /* |
| 114 | * Module unload() |
| 115 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 116 | static pj_status_t mod_inv_unload(void) |
| 117 | { |
| 118 | /* Should remove capability here */ |
| 119 | return PJ_SUCCESS; |
| 120 | } |
| 121 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 122 | /* |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 123 | * Set session state. |
| 124 | */ |
| 125 | void inv_set_state(pjsip_inv_session *inv, pjsip_inv_state state, |
| 126 | pjsip_event *e) |
| 127 | { |
| 128 | inv->state = state; |
| 129 | if (mod_inv.cb.on_state_changed) |
| 130 | (*mod_inv.cb.on_state_changed)(inv, e); |
| 131 | |
| 132 | if (inv->state == PJSIP_INV_STATE_DISCONNECTED) |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 133 | pjsip_dlg_dec_session(inv->dlg, &mod_inv.mod); |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 134 | } |
| 135 | |
| 136 | |
| 137 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 138 | * Send ACK for 2xx response. |
| 139 | */ |
| 140 | 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] | 141 | { |
| 142 | pjsip_tx_data *tdata; |
| 143 | pj_status_t status; |
| 144 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 145 | PJ_LOG(5,(inv->obj_name, "Received %s, sending ACK", |
| 146 | pjsip_rx_data_get_info(rdata))); |
| 147 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 148 | status = pjsip_dlg_create_request(inv->dlg, &pjsip_ack_method, |
| 149 | rdata->msg_info.cseq->cseq, &tdata); |
| 150 | if (status != PJ_SUCCESS) { |
| 151 | /* Better luck next time */ |
| 152 | pj_assert(!"Unable to create ACK!"); |
| 153 | return status; |
| 154 | } |
| 155 | |
| 156 | status = pjsip_dlg_send_request(inv->dlg, tdata, NULL); |
| 157 | if (status != PJ_SUCCESS) { |
| 158 | /* Better luck next time */ |
| 159 | pj_assert(!"Unable to send ACK!"); |
| 160 | return status; |
| 161 | } |
| 162 | |
| 163 | return PJ_SUCCESS; |
| 164 | } |
| 165 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 166 | /* |
| 167 | * Module on_rx_request() |
| 168 | * |
| 169 | * This callback is called for these events: |
| 170 | * - endpoint receives request which was unhandled by higher priority |
| 171 | * modules (e.g. transaction layer, dialog layer). |
| 172 | * - dialog distributes incoming request to its usages. |
| 173 | */ |
| 174 | static pj_bool_t mod_inv_on_rx_request(pjsip_rx_data *rdata) |
| 175 | { |
| 176 | pjsip_method *method; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 177 | pjsip_dialog *dlg; |
| 178 | pjsip_inv_session *inv; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 179 | |
| 180 | /* Only wants to receive request from a dialog. */ |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 181 | dlg = pjsip_rdata_get_dlg(rdata); |
| 182 | if (dlg == NULL) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 183 | return PJ_FALSE; |
| 184 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 185 | inv = dlg->mod_data[mod_inv.mod.id]; |
| 186 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 187 | /* Report to dialog that we handle INVITE, CANCEL, BYE, ACK. |
| 188 | * If we need to send response, it will be sent in the state |
| 189 | * handlers. |
| 190 | */ |
| 191 | method = &rdata->msg_info.msg->line.req.method; |
| 192 | |
| 193 | if (method->id == PJSIP_INVITE_METHOD || |
| 194 | method->id == PJSIP_CANCEL_METHOD || |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 195 | method->id == PJSIP_BYE_METHOD) |
| 196 | { |
| 197 | return PJ_TRUE; |
| 198 | } |
| 199 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 200 | /* On receipt ACK request, when state is CONNECTING, |
| 201 | * move state to CONFIRMED. |
| 202 | */ |
| 203 | if (method->id == PJSIP_ACK_METHOD && inv && |
Benny Prijono | 5eff043 | 2006-02-09 14:14:21 +0000 | [diff] [blame] | 204 | inv->state != PJSIP_INV_STATE_CONFIRMED) |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 205 | { |
| 206 | pjsip_event event; |
| 207 | |
Benny Prijono | 5eff043 | 2006-02-09 14:14:21 +0000 | [diff] [blame] | 208 | /* Terminate INVITE transaction, if it's still present. */ |
| 209 | if (inv->invite_tsx && |
| 210 | inv->invite_tsx->state <= PJSIP_TSX_STATE_COMPLETED) |
| 211 | { |
| 212 | pjsip_tsx_terminate(inv->invite_tsx, |
| 213 | inv->invite_tsx->status_code); |
| 214 | inv->invite_tsx = NULL; |
| 215 | } |
| 216 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 217 | PJSIP_EVENT_INIT_RX_MSG(event, rdata); |
| 218 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, &event); |
| 219 | } |
| 220 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 221 | return PJ_FALSE; |
| 222 | } |
| 223 | |
| 224 | /* |
| 225 | * Module on_rx_response(). |
| 226 | * |
| 227 | * This callback is called for these events: |
| 228 | * - dialog distributes incoming 2xx response to INVITE (outside |
| 229 | * transaction) to its usages. |
| 230 | * - endpoint distributes strayed responses. |
| 231 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 232 | static pj_bool_t mod_inv_on_rx_response(pjsip_rx_data *rdata) |
| 233 | { |
| 234 | pjsip_dialog *dlg; |
| 235 | pjsip_inv_session *inv; |
| 236 | pjsip_msg *msg = rdata->msg_info.msg; |
| 237 | |
| 238 | dlg = pjsip_rdata_get_dlg(rdata); |
| 239 | |
| 240 | /* Ignore responses outside dialog */ |
| 241 | if (dlg == NULL) |
| 242 | return PJ_FALSE; |
| 243 | |
| 244 | /* Ignore responses not belonging to invite session */ |
| 245 | inv = pjsip_dlg_get_inv_session(dlg); |
| 246 | if (inv == NULL) |
| 247 | return PJ_FALSE; |
| 248 | |
| 249 | /* This MAY be retransmission of 2xx response to INVITE. |
| 250 | * If it is, we need to send ACK. |
| 251 | */ |
| 252 | if (msg->type == PJSIP_RESPONSE_MSG && msg->line.status.code/100==2 && |
| 253 | rdata->msg_info.cseq->method.id == PJSIP_INVITE_METHOD) { |
| 254 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 255 | inv_send_ack(inv, rdata); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 256 | return PJ_TRUE; |
| 257 | |
| 258 | } |
| 259 | |
| 260 | /* No other processing needs to be done here. */ |
| 261 | return PJ_FALSE; |
| 262 | } |
| 263 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 264 | /* |
| 265 | * Module on_tsx_state() |
| 266 | * |
| 267 | * This callback is called by dialog framework for all transactions |
| 268 | * inside the dialog for all its dialog usages. |
| 269 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 270 | static void mod_inv_on_tsx_state(pjsip_transaction *tsx, pjsip_event *e) |
| 271 | { |
| 272 | pjsip_dialog *dlg; |
| 273 | pjsip_inv_session *inv; |
| 274 | |
| 275 | dlg = pjsip_tsx_get_dlg(tsx); |
| 276 | if (dlg == NULL) |
| 277 | return; |
| 278 | |
| 279 | inv = pjsip_dlg_get_inv_session(dlg); |
| 280 | if (inv == NULL) |
| 281 | return; |
| 282 | |
| 283 | /* Call state handler for the invite session. */ |
| 284 | (*inv_state_handler[inv->state])(inv, e); |
| 285 | |
| 286 | /* Call on_tsx_state */ |
| 287 | if (mod_inv.cb.on_tsx_state_changed) |
| 288 | (*mod_inv.cb.on_tsx_state_changed)(inv, tsx, e); |
| 289 | |
| 290 | /* Clear invite transaction when tsx is terminated. */ |
| 291 | if (tsx->state==PJSIP_TSX_STATE_TERMINATED && tsx == inv->invite_tsx) |
| 292 | inv->invite_tsx = NULL; |
| 293 | } |
| 294 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 295 | |
| 296 | /* |
| 297 | * Initialize the invite module. |
| 298 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 299 | PJ_DEF(pj_status_t) pjsip_inv_usage_init( pjsip_endpoint *endpt, |
| 300 | pjsip_module *app_module, |
| 301 | const pjsip_inv_callback *cb) |
| 302 | { |
| 303 | pj_status_t status; |
| 304 | |
| 305 | /* Check arguments. */ |
| 306 | PJ_ASSERT_RETURN(endpt && app_module && cb, PJ_EINVAL); |
| 307 | |
| 308 | /* Some callbacks are mandatory */ |
| 309 | PJ_ASSERT_RETURN(cb->on_state_changed && cb->on_new_session, PJ_EINVAL); |
| 310 | |
| 311 | /* Check if module already registered. */ |
| 312 | PJ_ASSERT_RETURN(mod_inv.mod.id == -1, PJ_EINVALIDOP); |
| 313 | |
| 314 | /* Copy param. */ |
| 315 | pj_memcpy(&mod_inv.cb, cb, sizeof(pjsip_inv_callback)); |
| 316 | |
| 317 | mod_inv.endpt = endpt; |
| 318 | mod_inv.app_user = app_module; |
| 319 | |
| 320 | /* Register the module. */ |
| 321 | status = pjsip_endpt_register_module(endpt, &mod_inv.mod); |
| 322 | |
| 323 | return status; |
| 324 | } |
| 325 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 326 | /* |
| 327 | * Get the instance of invite module. |
| 328 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 329 | PJ_DEF(pjsip_module*) pjsip_inv_usage_instance(void) |
| 330 | { |
| 331 | return &mod_inv.mod; |
| 332 | } |
| 333 | |
| 334 | |
Benny Prijono | 632ce71 | 2006-02-09 14:01:40 +0000 | [diff] [blame] | 335 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 336 | /* |
| 337 | * Return the invite session for the specified dialog. |
| 338 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 339 | PJ_DEF(pjsip_inv_session*) pjsip_dlg_get_inv_session(pjsip_dialog *dlg) |
| 340 | { |
| 341 | return dlg->mod_data[mod_inv.mod.id]; |
| 342 | } |
| 343 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 344 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 345 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 346 | * Create UAC invite session. |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 347 | */ |
| 348 | PJ_DEF(pj_status_t) pjsip_inv_create_uac( pjsip_dialog *dlg, |
| 349 | const pjmedia_sdp_session *local_sdp, |
| 350 | unsigned options, |
| 351 | pjsip_inv_session **p_inv) |
| 352 | { |
| 353 | pjsip_inv_session *inv; |
| 354 | pj_status_t status; |
| 355 | |
| 356 | /* Verify arguments. */ |
| 357 | PJ_ASSERT_RETURN(dlg && p_inv, PJ_EINVAL); |
| 358 | |
| 359 | /* Normalize options */ |
| 360 | if (options & PJSIP_INV_REQUIRE_100REL) |
| 361 | options |= PJSIP_INV_SUPPORT_100REL; |
| 362 | |
| 363 | if (options & PJSIP_INV_REQUIRE_TIMER) |
| 364 | options |= PJSIP_INV_SUPPORT_TIMER; |
| 365 | |
| 366 | /* Create the session */ |
| 367 | inv = pj_pool_zalloc(dlg->pool, sizeof(pjsip_inv_session)); |
| 368 | PJ_ASSERT_RETURN(inv != NULL, PJ_ENOMEM); |
| 369 | |
| 370 | inv->pool = dlg->pool; |
| 371 | inv->role = PJSIP_ROLE_UAC; |
| 372 | inv->state = PJSIP_INV_STATE_NULL; |
| 373 | inv->dlg = dlg; |
| 374 | inv->options = options; |
| 375 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 376 | /* Object name will use the same dialog pointer. */ |
| 377 | pj_snprintf(inv->obj_name, PJ_MAX_OBJ_NAME, "inv%p", dlg); |
| 378 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 379 | /* Create negotiator if local_sdp is specified. */ |
| 380 | if (local_sdp) { |
| 381 | status = pjmedia_sdp_neg_create_w_local_offer(dlg->pool, local_sdp, |
| 382 | &inv->neg); |
| 383 | if (status != PJ_SUCCESS) |
| 384 | return status; |
| 385 | } |
| 386 | |
| 387 | /* Register invite as dialog usage. */ |
| 388 | status = pjsip_dlg_add_usage(dlg, &mod_inv.mod, inv); |
| 389 | if (status != PJ_SUCCESS) |
| 390 | return status; |
| 391 | |
| 392 | /* Increment dialog session */ |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 393 | pjsip_dlg_inc_session(dlg, &mod_inv.mod); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 394 | |
| 395 | /* Done */ |
| 396 | *p_inv = inv; |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 397 | |
| 398 | PJ_LOG(5,(inv->obj_name, "UAC invite session created for dialog %s", |
| 399 | dlg->obj_name)); |
| 400 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 401 | return PJ_SUCCESS; |
| 402 | } |
| 403 | |
| 404 | /* |
| 405 | * Verify incoming INVITE request. |
| 406 | */ |
| 407 | PJ_DEF(pj_status_t) pjsip_inv_verify_request(pjsip_rx_data *rdata, |
| 408 | unsigned *options, |
| 409 | const pjmedia_sdp_session *l_sdp, |
| 410 | pjsip_dialog *dlg, |
| 411 | pjsip_endpoint *endpt, |
| 412 | pjsip_tx_data **p_tdata) |
| 413 | { |
| 414 | pjsip_msg *msg; |
| 415 | pjsip_allow_hdr *allow; |
| 416 | pjsip_supported_hdr *sup_hdr; |
| 417 | pjsip_require_hdr *req_hdr; |
| 418 | int code = 200; |
| 419 | unsigned rem_option = 0; |
| 420 | pj_status_t status = PJ_SUCCESS; |
| 421 | pjsip_hdr res_hdr_list; |
| 422 | |
| 423 | /* Init return arguments. */ |
| 424 | if (p_tdata) *p_tdata = NULL; |
| 425 | |
| 426 | /* Verify arguments. */ |
| 427 | PJ_ASSERT_RETURN(rdata != NULL && options != NULL, PJ_EINVAL); |
| 428 | |
| 429 | /* Normalize options */ |
| 430 | if (*options & PJSIP_INV_REQUIRE_100REL) |
| 431 | *options |= PJSIP_INV_SUPPORT_100REL; |
| 432 | |
| 433 | if (*options & PJSIP_INV_REQUIRE_TIMER) |
| 434 | *options |= PJSIP_INV_SUPPORT_TIMER; |
| 435 | |
| 436 | /* Get the message in rdata */ |
| 437 | msg = rdata->msg_info.msg; |
| 438 | |
| 439 | /* Must be INVITE request. */ |
| 440 | PJ_ASSERT_RETURN(msg->type == PJSIP_REQUEST_MSG && |
| 441 | msg->line.req.method.id == PJSIP_INVITE_METHOD, |
| 442 | PJ_EINVAL); |
| 443 | |
| 444 | /* If tdata is specified, then either dlg or endpt must be specified */ |
| 445 | PJ_ASSERT_RETURN((!p_tdata) || (endpt || dlg), PJ_EINVAL); |
| 446 | |
| 447 | /* Get the endpoint */ |
| 448 | endpt = endpt ? endpt : dlg->endpt; |
| 449 | |
| 450 | /* Init response header list */ |
| 451 | pj_list_init(&res_hdr_list); |
| 452 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 453 | /* Check the request body, see if it'inv something that we support |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 454 | * (i.e. SDP). |
| 455 | */ |
| 456 | if (msg->body) { |
| 457 | pjsip_msg_body *body = msg->body; |
| 458 | pj_str_t str_application = {"application", 11}; |
| 459 | pj_str_t str_sdp = { "sdp", 3 }; |
| 460 | pjmedia_sdp_session *sdp; |
| 461 | |
| 462 | /* Check content type. */ |
| 463 | if (pj_stricmp(&body->content_type.type, &str_application) != 0 || |
| 464 | pj_stricmp(&body->content_type.subtype, &str_sdp) != 0) |
| 465 | { |
| 466 | /* Not "application/sdp" */ |
| 467 | code = PJSIP_SC_UNSUPPORTED_MEDIA_TYPE; |
| 468 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 469 | |
| 470 | if (p_tdata) { |
| 471 | /* Add Accept header to response */ |
| 472 | pjsip_accept_hdr *acc; |
| 473 | |
| 474 | acc = pjsip_accept_hdr_create(rdata->tp_info.pool); |
| 475 | PJ_ASSERT_RETURN(acc, PJ_ENOMEM); |
| 476 | acc->values[acc->count++] = pj_str("application/sdp"); |
| 477 | pj_list_push_back(&res_hdr_list, acc); |
| 478 | } |
| 479 | |
| 480 | goto on_return; |
| 481 | } |
| 482 | |
| 483 | /* Parse and validate SDP */ |
| 484 | status = pjmedia_sdp_parse(rdata->tp_info.pool, body->data, body->len, |
| 485 | &sdp); |
| 486 | if (status == PJ_SUCCESS) |
| 487 | status = pjmedia_sdp_validate(sdp); |
| 488 | |
| 489 | if (status != PJ_SUCCESS) { |
| 490 | /* Unparseable or invalid SDP */ |
| 491 | code = PJSIP_SC_BAD_REQUEST; |
| 492 | |
| 493 | if (p_tdata) { |
| 494 | /* Add Warning header. */ |
| 495 | pjsip_warning_hdr *w; |
| 496 | |
| 497 | w = pjsip_warning_hdr_create_from_status(rdata->tp_info.pool, |
| 498 | pjsip_endpt_name(endpt), |
| 499 | status); |
| 500 | PJ_ASSERT_RETURN(w, PJ_ENOMEM); |
| 501 | |
| 502 | pj_list_push_back(&res_hdr_list, w); |
| 503 | } |
| 504 | |
| 505 | goto on_return; |
| 506 | } |
| 507 | |
| 508 | /* Negotiate with local SDP */ |
| 509 | if (l_sdp) { |
| 510 | pjmedia_sdp_neg *neg; |
| 511 | |
| 512 | /* Local SDP must be valid! */ |
| 513 | PJ_ASSERT_RETURN((status=pjmedia_sdp_validate(l_sdp))==PJ_SUCCESS, |
| 514 | status); |
| 515 | |
| 516 | /* Create SDP negotiator */ |
| 517 | status = pjmedia_sdp_neg_create_w_remote_offer( |
| 518 | rdata->tp_info.pool, l_sdp, sdp, &neg); |
| 519 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, status); |
| 520 | |
| 521 | /* Negotiate SDP */ |
| 522 | status = pjmedia_sdp_neg_negotiate(rdata->tp_info.pool, neg, 0); |
| 523 | if (status != PJ_SUCCESS) { |
| 524 | |
| 525 | /* Incompatible media */ |
| 526 | code = PJSIP_SC_NOT_ACCEPTABLE_HERE; |
| 527 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 528 | |
| 529 | if (p_tdata) { |
| 530 | pjsip_accept_hdr *acc; |
| 531 | pjsip_warning_hdr *w; |
| 532 | |
| 533 | /* Add Warning header. */ |
| 534 | w = pjsip_warning_hdr_create_from_status( |
| 535 | rdata->tp_info.pool, |
| 536 | pjsip_endpt_name(endpt), status); |
| 537 | PJ_ASSERT_RETURN(w, PJ_ENOMEM); |
| 538 | |
| 539 | pj_list_push_back(&res_hdr_list, w); |
| 540 | |
| 541 | /* Add Accept header to response */ |
| 542 | acc = pjsip_accept_hdr_create(rdata->tp_info.pool); |
| 543 | PJ_ASSERT_RETURN(acc, PJ_ENOMEM); |
| 544 | acc->values[acc->count++] = pj_str("application/sdp"); |
| 545 | pj_list_push_back(&res_hdr_list, acc); |
| 546 | |
| 547 | } |
| 548 | |
| 549 | goto on_return; |
| 550 | } |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | /* Check supported methods, see if peer supports UPDATE. |
| 555 | * We just assume that peer supports standard INVITE, ACK, CANCEL, and BYE |
| 556 | * implicitly by sending this INVITE. |
| 557 | */ |
| 558 | allow = pjsip_msg_find_hdr(msg, PJSIP_H_ALLOW, NULL); |
| 559 | if (allow) { |
| 560 | unsigned i; |
| 561 | const pj_str_t STR_UPDATE = { "UPDATE", 6 }; |
| 562 | |
| 563 | for (i=0; i<allow->count; ++i) { |
| 564 | if (pj_stricmp(&allow->values[i], &STR_UPDATE)==0) |
| 565 | break; |
| 566 | } |
| 567 | |
| 568 | if (i != allow->count) { |
| 569 | /* UPDATE is present in Allow */ |
| 570 | rem_option |= PJSIP_INV_SUPPORT_UPDATE; |
| 571 | } |
| 572 | |
| 573 | } |
| 574 | |
| 575 | /* Check Supported header */ |
| 576 | sup_hdr = pjsip_msg_find_hdr(msg, PJSIP_H_SUPPORTED, NULL); |
| 577 | if (sup_hdr) { |
| 578 | unsigned i; |
| 579 | pj_str_t STR_100REL = { "100rel", 6}; |
| 580 | pj_str_t STR_TIMER = { "timer", 5 }; |
| 581 | |
| 582 | for (i=0; i<sup_hdr->count; ++i) { |
| 583 | if (pj_stricmp(&sup_hdr->values[i], &STR_100REL)==0) |
| 584 | rem_option |= PJSIP_INV_SUPPORT_100REL; |
| 585 | else if (pj_stricmp(&sup_hdr->values[i], &STR_TIMER)==0) |
| 586 | rem_option |= PJSIP_INV_SUPPORT_TIMER; |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | /* Check Require header */ |
| 591 | req_hdr = pjsip_msg_find_hdr(msg, PJSIP_H_REQUIRE, NULL); |
| 592 | if (req_hdr) { |
| 593 | unsigned i; |
| 594 | pj_str_t STR_100REL = { "100rel", 6}; |
| 595 | pj_str_t STR_TIMER = { "timer", 5 }; |
| 596 | unsigned unsupp_cnt = 0; |
| 597 | pj_str_t unsupp_tags[PJSIP_GENERIC_ARRAY_MAX_COUNT]; |
| 598 | |
| 599 | for (i=0; i<req_hdr->count; ++i) { |
| 600 | if ((*options & PJSIP_INV_SUPPORT_100REL) && |
| 601 | pj_stricmp(&req_hdr->values[i], &STR_100REL)==0) |
| 602 | { |
| 603 | rem_option |= PJSIP_INV_REQUIRE_100REL; |
| 604 | |
| 605 | } else if ((*options && PJSIP_INV_SUPPORT_TIMER) && |
| 606 | pj_stricmp(&req_hdr->values[i], &STR_TIMER)==0) |
| 607 | { |
| 608 | rem_option |= PJSIP_INV_REQUIRE_TIMER; |
| 609 | |
| 610 | } else { |
| 611 | /* Unknown/unsupported extension tag! */ |
| 612 | unsupp_tags[unsupp_cnt++] = req_hdr->values[i]; |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | /* Check if there are required tags that we don't support */ |
| 617 | if (unsupp_cnt) { |
| 618 | |
| 619 | code = PJSIP_SC_BAD_EXTENSION; |
| 620 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 621 | |
| 622 | if (p_tdata) { |
| 623 | pjsip_unsupported_hdr *unsupp_hdr; |
| 624 | const pjsip_hdr *h; |
| 625 | |
| 626 | /* Add Unsupported header. */ |
| 627 | unsupp_hdr = pjsip_unsupported_hdr_create(rdata->tp_info.pool); |
| 628 | PJ_ASSERT_RETURN(unsupp_hdr != NULL, PJ_ENOMEM); |
| 629 | |
| 630 | unsupp_hdr->count = unsupp_cnt; |
| 631 | for (i=0; i<unsupp_cnt; ++i) |
| 632 | unsupp_hdr->values[i] = unsupp_tags[i]; |
| 633 | |
| 634 | pj_list_push_back(&res_hdr_list, unsupp_hdr); |
| 635 | |
| 636 | /* Add Supported header. */ |
| 637 | h = pjsip_endpt_get_capability(endpt, PJSIP_H_SUPPORTED, |
| 638 | NULL); |
| 639 | pj_assert(h); |
| 640 | if (h) { |
| 641 | sup_hdr = pjsip_hdr_clone(rdata->tp_info.pool, h); |
| 642 | pj_list_push_back(&res_hdr_list, sup_hdr); |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | goto on_return; |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | /* Check if there are local requirements that are not supported |
| 651 | * by peer. |
| 652 | */ |
| 653 | if ( ((*options & PJSIP_INV_REQUIRE_100REL)!=0 && |
| 654 | (rem_option & PJSIP_INV_SUPPORT_100REL)==0) || |
| 655 | ((*options & PJSIP_INV_REQUIRE_TIMER)!=0 && |
| 656 | (rem_option & PJSIP_INV_SUPPORT_TIMER)==0)) |
| 657 | { |
| 658 | code = PJSIP_SC_EXTENSION_REQUIRED; |
| 659 | status = PJSIP_ERRNO_FROM_SIP_STATUS(code); |
| 660 | |
| 661 | if (p_tdata) { |
| 662 | const pjsip_hdr *h; |
| 663 | |
| 664 | /* Add Require header. */ |
| 665 | req_hdr = pjsip_require_hdr_create(rdata->tp_info.pool); |
| 666 | PJ_ASSERT_RETURN(req_hdr != NULL, PJ_ENOMEM); |
| 667 | |
| 668 | if (*options & PJSIP_INV_REQUIRE_100REL) |
| 669 | req_hdr->values[req_hdr->count++] = pj_str("100rel"); |
| 670 | |
| 671 | if (*options & PJSIP_INV_REQUIRE_TIMER) |
| 672 | req_hdr->values[req_hdr->count++] = pj_str("timer"); |
| 673 | |
| 674 | pj_list_push_back(&res_hdr_list, req_hdr); |
| 675 | |
| 676 | /* Add Supported header. */ |
| 677 | h = pjsip_endpt_get_capability(endpt, PJSIP_H_SUPPORTED, |
| 678 | NULL); |
| 679 | pj_assert(h); |
| 680 | if (h) { |
| 681 | sup_hdr = pjsip_hdr_clone(rdata->tp_info.pool, h); |
| 682 | pj_list_push_back(&res_hdr_list, sup_hdr); |
| 683 | } |
| 684 | |
| 685 | } |
| 686 | |
| 687 | goto on_return; |
| 688 | } |
| 689 | |
| 690 | on_return: |
| 691 | |
| 692 | /* Create response if necessary */ |
| 693 | if (code != 200 && p_tdata) { |
| 694 | pjsip_tx_data *tdata; |
| 695 | const pjsip_hdr *h; |
| 696 | |
| 697 | if (dlg) { |
| 698 | status = pjsip_dlg_create_response(dlg, rdata, code, NULL, |
| 699 | &tdata); |
| 700 | } else { |
| 701 | status = pjsip_endpt_create_response(endpt, rdata, code, NULL, |
| 702 | &tdata); |
| 703 | } |
| 704 | |
| 705 | if (status != PJ_SUCCESS) |
| 706 | return status; |
| 707 | |
| 708 | /* Add response headers. */ |
| 709 | h = res_hdr_list.next; |
| 710 | while (h != &res_hdr_list) { |
| 711 | pjsip_hdr *cloned; |
| 712 | |
| 713 | cloned = pjsip_hdr_clone(tdata->pool, h); |
| 714 | PJ_ASSERT_RETURN(cloned, PJ_ENOMEM); |
| 715 | |
| 716 | pjsip_msg_add_hdr(tdata->msg, cloned); |
| 717 | |
| 718 | h = h->next; |
| 719 | } |
| 720 | |
| 721 | *p_tdata = tdata; |
| 722 | } |
| 723 | |
| 724 | return status; |
| 725 | } |
| 726 | |
| 727 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 728 | * Create UAS invite session. |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 729 | */ |
| 730 | PJ_DEF(pj_status_t) pjsip_inv_create_uas( pjsip_dialog *dlg, |
| 731 | pjsip_rx_data *rdata, |
| 732 | const pjmedia_sdp_session *local_sdp, |
| 733 | unsigned options, |
| 734 | pjsip_inv_session **p_inv) |
| 735 | { |
| 736 | pjsip_inv_session *inv; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 737 | struct tsx_inv_data *tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 738 | pjsip_msg *msg; |
| 739 | pjmedia_sdp_session *rem_sdp = NULL; |
| 740 | pj_status_t status; |
| 741 | |
| 742 | /* Verify arguments. */ |
| 743 | PJ_ASSERT_RETURN(dlg && rdata && p_inv, PJ_EINVAL); |
| 744 | |
| 745 | /* Dialog MUST have been initialised. */ |
| 746 | PJ_ASSERT_RETURN(pjsip_rdata_get_tsx(rdata) != NULL, PJ_EINVALIDOP); |
| 747 | |
| 748 | msg = rdata->msg_info.msg; |
| 749 | |
| 750 | /* rdata MUST contain INVITE request */ |
| 751 | PJ_ASSERT_RETURN(msg->type == PJSIP_REQUEST_MSG && |
| 752 | msg->line.req.method.id == PJSIP_INVITE_METHOD, |
| 753 | PJ_EINVALIDOP); |
| 754 | |
| 755 | /* Normalize options */ |
| 756 | if (options & PJSIP_INV_REQUIRE_100REL) |
| 757 | options |= PJSIP_INV_SUPPORT_100REL; |
| 758 | |
| 759 | if (options & PJSIP_INV_REQUIRE_TIMER) |
| 760 | options |= PJSIP_INV_SUPPORT_TIMER; |
| 761 | |
| 762 | /* Create the session */ |
| 763 | inv = pj_pool_zalloc(dlg->pool, sizeof(pjsip_inv_session)); |
| 764 | PJ_ASSERT_RETURN(inv != NULL, PJ_ENOMEM); |
| 765 | |
| 766 | inv->pool = dlg->pool; |
| 767 | inv->role = PJSIP_ROLE_UAS; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 768 | inv->state = PJSIP_INV_STATE_NULL; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 769 | inv->dlg = dlg; |
| 770 | inv->options = options; |
| 771 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 772 | /* Object name will use the same dialog pointer. */ |
| 773 | pj_snprintf(inv->obj_name, PJ_MAX_OBJ_NAME, "inv%p", dlg); |
| 774 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 775 | /* Parse SDP in message body, if present. */ |
| 776 | if (msg->body) { |
| 777 | pjsip_msg_body *body = msg->body; |
| 778 | |
| 779 | /* Parse and validate SDP */ |
| 780 | status = pjmedia_sdp_parse(inv->pool, body->data, body->len, |
| 781 | &rem_sdp); |
| 782 | if (status == PJ_SUCCESS) |
| 783 | status = pjmedia_sdp_validate(rem_sdp); |
| 784 | |
| 785 | if (status != PJ_SUCCESS) |
| 786 | return status; |
| 787 | } |
| 788 | |
| 789 | /* Create negotiator. */ |
| 790 | if (rem_sdp) { |
| 791 | status = pjmedia_sdp_neg_create_w_remote_offer(inv->pool, local_sdp, |
| 792 | rem_sdp, &inv->neg); |
| 793 | |
| 794 | } else if (local_sdp) { |
| 795 | status = pjmedia_sdp_neg_create_w_local_offer(inv->pool, local_sdp, |
| 796 | &inv->neg); |
| 797 | } else { |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 798 | status = PJ_SUCCESS; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 799 | } |
| 800 | |
| 801 | if (status != PJ_SUCCESS) |
| 802 | return status; |
| 803 | |
| 804 | /* Register invite as dialog usage. */ |
| 805 | status = pjsip_dlg_add_usage(dlg, &mod_inv.mod, inv); |
| 806 | if (status != PJ_SUCCESS) |
| 807 | return status; |
| 808 | |
| 809 | /* Increment session in the dialog. */ |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 810 | pjsip_dlg_inc_session(dlg, &mod_inv.mod); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 811 | |
| 812 | /* Save the invite transaction. */ |
| 813 | inv->invite_tsx = pjsip_rdata_get_tsx(rdata); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 814 | |
| 815 | /* Attach our data to the transaction. */ |
| 816 | tsx_inv_data = pj_pool_zalloc(inv->invite_tsx->pool, |
| 817 | sizeof(struct tsx_inv_data)); |
| 818 | tsx_inv_data->inv = inv; |
| 819 | inv->invite_tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 820 | |
| 821 | /* Done */ |
| 822 | *p_inv = inv; |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 823 | |
| 824 | PJ_LOG(5,(inv->obj_name, "UAS invite session created for dialog %s", |
| 825 | dlg->obj_name)); |
| 826 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 827 | return PJ_SUCCESS; |
| 828 | } |
| 829 | |
| 830 | static void *clone_sdp(pj_pool_t *pool, const void *data, unsigned len) |
| 831 | { |
| 832 | PJ_UNUSED_ARG(len); |
| 833 | return pjmedia_sdp_session_clone(pool, data); |
| 834 | } |
| 835 | |
| 836 | static int print_sdp(pjsip_msg_body *body, char *buf, pj_size_t len) |
| 837 | { |
| 838 | return pjmedia_sdp_print(body->data, buf, len); |
| 839 | } |
| 840 | |
| 841 | static pjsip_msg_body *create_sdp_body(pj_pool_t *pool, |
| 842 | const pjmedia_sdp_session *c_sdp) |
| 843 | { |
| 844 | pjsip_msg_body *body; |
| 845 | |
| 846 | |
| 847 | body = pj_pool_zalloc(pool, sizeof(pjsip_msg_body)); |
| 848 | PJ_ASSERT_RETURN(body != NULL, NULL); |
| 849 | |
| 850 | body->content_type.type = pj_str("application"); |
| 851 | body->content_type.subtype = pj_str("sdp"); |
| 852 | body->data = pjmedia_sdp_session_clone(pool, c_sdp); |
| 853 | body->len = 0; |
| 854 | body->clone_data = &clone_sdp; |
| 855 | body->print_body = &print_sdp; |
| 856 | |
| 857 | return body; |
| 858 | } |
| 859 | |
| 860 | /* |
| 861 | * Create initial INVITE request. |
| 862 | */ |
| 863 | PJ_DEF(pj_status_t) pjsip_inv_invite( pjsip_inv_session *inv, |
| 864 | pjsip_tx_data **p_tdata ) |
| 865 | { |
| 866 | pjsip_tx_data *tdata; |
| 867 | const pjsip_hdr *hdr; |
| 868 | pj_status_t status; |
| 869 | |
| 870 | /* Verify arguments. */ |
| 871 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 872 | |
| 873 | /* State MUST be NULL. */ |
| 874 | PJ_ASSERT_RETURN(inv->state == PJSIP_INV_STATE_NULL, PJ_EINVAL); |
| 875 | |
| 876 | /* Create the INVITE request. */ |
| 877 | status = pjsip_dlg_create_request(inv->dlg, &pjsip_invite_method, -1, |
| 878 | &tdata); |
| 879 | if (status != PJ_SUCCESS) |
| 880 | return status; |
| 881 | |
| 882 | /* Add SDP, if any. */ |
| 883 | if (inv->neg && |
| 884 | pjmedia_sdp_neg_get_state(inv->neg)==PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) |
| 885 | { |
| 886 | const pjmedia_sdp_session *offer; |
| 887 | |
| 888 | status = pjmedia_sdp_neg_get_neg_local(inv->neg, &offer); |
| 889 | if (status != PJ_SUCCESS) |
| 890 | return status; |
| 891 | |
| 892 | tdata->msg->body = create_sdp_body(tdata->pool, offer); |
| 893 | } |
| 894 | |
| 895 | /* Add Allow header. */ |
| 896 | hdr = pjsip_endpt_get_capability(inv->dlg->endpt, PJSIP_H_ALLOW, NULL); |
| 897 | if (hdr) { |
| 898 | pjsip_msg_add_hdr(tdata->msg, |
| 899 | pjsip_hdr_shallow_clone(tdata->pool, hdr)); |
| 900 | } |
| 901 | |
| 902 | /* Add Supported header */ |
| 903 | hdr = pjsip_endpt_get_capability(inv->dlg->endpt, PJSIP_H_SUPPORTED, NULL); |
| 904 | if (hdr) { |
| 905 | pjsip_msg_add_hdr(tdata->msg, |
| 906 | pjsip_hdr_shallow_clone(tdata->pool, hdr)); |
| 907 | } |
| 908 | |
| 909 | /* Add Require header. */ |
| 910 | PJ_TODO(INVITE_ADD_REQUIRE_HEADER); |
| 911 | |
| 912 | /* Done. */ |
| 913 | *p_tdata = tdata; |
| 914 | |
| 915 | return PJ_SUCCESS; |
| 916 | } |
| 917 | |
| 918 | |
| 919 | /* |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 920 | * Negotiate SDP. |
| 921 | */ |
| 922 | static pj_status_t inv_negotiate_sdp( pjsip_inv_session *inv ) |
| 923 | { |
| 924 | pj_status_t status; |
| 925 | |
| 926 | PJ_ASSERT_RETURN(pjmedia_sdp_neg_get_state(inv->neg) == |
| 927 | PJMEDIA_SDP_NEG_STATE_WAIT_NEGO, |
| 928 | PJMEDIA_SDPNEG_EINSTATE); |
| 929 | |
| 930 | status = pjmedia_sdp_neg_negotiate(inv->pool, inv->neg, 0); |
| 931 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 932 | PJ_LOG(5,(inv->obj_name, "SDP negotiation done, status=%d", status)); |
| 933 | |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 934 | if (mod_inv.cb.on_media_update) |
| 935 | (*mod_inv.cb.on_media_update)(inv, status); |
| 936 | |
| 937 | return status; |
| 938 | } |
| 939 | |
| 940 | /* |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 941 | * Check in incoming message for SDP offer/answer. |
| 942 | */ |
| 943 | static void inv_check_sdp_in_incoming_msg( pjsip_inv_session *inv, |
| 944 | pjsip_transaction *tsx, |
| 945 | pjsip_rx_data *rdata) |
| 946 | { |
| 947 | struct tsx_inv_data *tsx_inv_data; |
| 948 | static const pj_str_t str_application = { "application", 11 }; |
| 949 | static const pj_str_t str_sdp = { "sdp", 3 }; |
| 950 | pj_status_t status; |
| 951 | pjsip_msg *msg; |
| 952 | pjmedia_sdp_session *sdp; |
| 953 | |
| 954 | /* Get/attach invite session's transaction data */ |
| 955 | tsx_inv_data = tsx->mod_data[mod_inv.mod.id]; |
| 956 | if (tsx_inv_data == NULL) { |
| 957 | tsx_inv_data = pj_pool_zalloc(tsx->pool, sizeof(struct tsx_inv_data)); |
| 958 | tsx_inv_data->inv = inv; |
| 959 | tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
| 960 | } |
| 961 | |
| 962 | /* MUST NOT do multiple SDP offer/answer in a single transaction. |
| 963 | */ |
| 964 | |
| 965 | if (tsx_inv_data->sdp_done) |
| 966 | return; |
| 967 | |
| 968 | /* Check if SDP is present in the message. */ |
| 969 | |
| 970 | msg = rdata->msg_info.msg; |
| 971 | if (msg->body == NULL) { |
| 972 | /* Message doesn't have body. */ |
| 973 | return; |
| 974 | } |
| 975 | |
| 976 | if (pj_stricmp(&msg->body->content_type.type, &str_application) || |
| 977 | pj_stricmp(&msg->body->content_type.subtype, &str_sdp)) |
| 978 | { |
| 979 | /* Message body is not "application/sdp" */ |
| 980 | return; |
| 981 | } |
| 982 | |
| 983 | /* Parse the SDP body. */ |
| 984 | |
| 985 | status = pjmedia_sdp_parse(rdata->tp_info.pool, msg->body->data, |
| 986 | msg->body->len, &sdp); |
| 987 | if (status != PJ_SUCCESS) { |
| 988 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 989 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 990 | PJ_LOG(4,(THIS_FILE, "Error parsing SDP in %s: %s", |
| 991 | pjsip_rx_data_get_info(rdata), errmsg)); |
| 992 | return; |
| 993 | } |
| 994 | |
| 995 | /* The SDP can be an offer or answer, depending on negotiator's state */ |
| 996 | |
| 997 | if (inv->neg == NULL || |
| 998 | pjmedia_sdp_neg_get_state(inv->neg) == PJMEDIA_SDP_NEG_STATE_DONE) |
| 999 | { |
| 1000 | |
| 1001 | /* This is an offer. */ |
| 1002 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 1003 | PJ_LOG(5,(inv->obj_name, "Got SDP offer in %s", |
| 1004 | pjsip_rx_data_get_info(rdata))); |
| 1005 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1006 | if (inv->neg == NULL) { |
| 1007 | status=pjmedia_sdp_neg_create_w_remote_offer(inv->pool, NULL, |
| 1008 | sdp, &inv->neg); |
| 1009 | } else { |
| 1010 | status=pjmedia_sdp_neg_set_remote_offer(inv->pool, inv->neg, sdp); |
| 1011 | } |
| 1012 | |
| 1013 | if (status != PJ_SUCCESS) { |
| 1014 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 1015 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 1016 | PJ_LOG(4,(THIS_FILE, "Error processing SDP offer in %s: %s", |
| 1017 | pjsip_rx_data_get_info(rdata), errmsg)); |
| 1018 | return; |
| 1019 | } |
| 1020 | |
| 1021 | /* Inform application about remote offer. */ |
| 1022 | |
| 1023 | if (mod_inv.cb.on_rx_offer) |
| 1024 | (*mod_inv.cb.on_rx_offer)(inv); |
| 1025 | |
| 1026 | } else if (pjmedia_sdp_neg_get_state(inv->neg) == |
| 1027 | PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) |
| 1028 | { |
| 1029 | |
| 1030 | /* This is an answer. |
| 1031 | * Process and negotiate remote answer. |
| 1032 | */ |
| 1033 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 1034 | PJ_LOG(5,(inv->obj_name, "Got SDP answer in %s", |
| 1035 | pjsip_rx_data_get_info(rdata))); |
| 1036 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1037 | status = pjmedia_sdp_neg_set_remote_answer(inv->pool, inv->neg, sdp); |
| 1038 | |
| 1039 | if (status != PJ_SUCCESS) { |
| 1040 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 1041 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 1042 | PJ_LOG(4,(THIS_FILE, "Error processing SDP answer in %s: %s", |
| 1043 | pjsip_rx_data_get_info(rdata), errmsg)); |
| 1044 | return; |
| 1045 | } |
| 1046 | |
| 1047 | /* Negotiate SDP */ |
| 1048 | |
| 1049 | inv_negotiate_sdp(inv); |
| 1050 | |
| 1051 | /* Mark this transaction has having SDP offer/answer done. */ |
| 1052 | |
| 1053 | tsx_inv_data->sdp_done = 1; |
| 1054 | |
| 1055 | } else { |
| 1056 | |
| 1057 | PJ_LOG(5,(THIS_FILE, "Ignored SDP in %s: negotiator state is %s", |
| 1058 | pjsip_rx_data_get_info(rdata), |
| 1059 | pjmedia_sdp_neg_state_str(pjmedia_sdp_neg_get_state(inv->neg)))); |
| 1060 | } |
| 1061 | |
| 1062 | } |
| 1063 | |
| 1064 | |
| 1065 | |
| 1066 | /* |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1067 | * Answer initial INVITE. |
| 1068 | */ |
| 1069 | PJ_DEF(pj_status_t) pjsip_inv_answer( pjsip_inv_session *inv, |
| 1070 | int st_code, |
| 1071 | const pj_str_t *st_text, |
| 1072 | const pjmedia_sdp_session *local_sdp, |
| 1073 | pjsip_tx_data **p_tdata ) |
| 1074 | { |
| 1075 | pjsip_tx_data *last_res; |
| 1076 | pj_status_t status; |
| 1077 | |
| 1078 | /* Verify arguments. */ |
| 1079 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1080 | |
| 1081 | /* Must have INVITE transaction. */ |
| 1082 | PJ_ASSERT_RETURN(inv->invite_tsx, PJ_EBUG); |
| 1083 | |
| 1084 | /* INVITE transaction MUST have transmitted a response (e.g. 100) */ |
| 1085 | PJ_ASSERT_RETURN(inv->invite_tsx->last_tx, PJ_EINVALIDOP); |
| 1086 | |
| 1087 | /* If local_sdp is specified, then we MUST NOT have answered the |
| 1088 | * offer before. |
| 1089 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1090 | if (local_sdp) { |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1091 | |
| 1092 | if (inv->neg == NULL) { |
| 1093 | status = pjmedia_sdp_neg_create_w_local_offer(inv->pool, local_sdp, |
| 1094 | &inv->neg); |
| 1095 | } else if (pjmedia_sdp_neg_get_state(inv->neg)== |
| 1096 | PJMEDIA_SDP_NEG_STATE_REMOTE_OFFER) |
| 1097 | { |
| 1098 | status = pjmedia_sdp_neg_set_local_answer(inv->pool, inv->neg, |
| 1099 | local_sdp); |
| 1100 | } else { |
| 1101 | |
| 1102 | /* Can not specify local SDP at this state. */ |
| 1103 | pj_assert(0); |
| 1104 | status = PJMEDIA_SDPNEG_EINSTATE; |
| 1105 | } |
| 1106 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1107 | if (status != PJ_SUCCESS) |
| 1108 | return status; |
| 1109 | } |
| 1110 | |
| 1111 | last_res = inv->invite_tsx->last_tx; |
| 1112 | |
| 1113 | /* Modify last response. */ |
| 1114 | status = pjsip_dlg_modify_response(inv->dlg, last_res, st_code, st_text); |
| 1115 | if (status != PJ_SUCCESS) |
| 1116 | return status; |
| 1117 | |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1118 | /* Include SDP for 18x and 2xx response. |
| 1119 | * Also if SDP negotiator is ready, start negotiation. |
| 1120 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1121 | if (st_code/10 == 18 || st_code/10 == 20) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1122 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1123 | pjmedia_sdp_neg_state neg_state; |
| 1124 | |
| 1125 | neg_state = inv->neg ? pjmedia_sdp_neg_get_state(inv->neg) : |
| 1126 | PJMEDIA_SDP_NEG_STATE_NULL; |
| 1127 | |
| 1128 | if (neg_state == PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER || |
| 1129 | neg_state == PJMEDIA_SDP_NEG_STATE_WAIT_NEGO) |
| 1130 | { |
| 1131 | const pjmedia_sdp_session *local; |
| 1132 | |
| 1133 | status = pjmedia_sdp_neg_get_neg_local(inv->neg, &local); |
| 1134 | if (status == PJ_SUCCESS) |
| 1135 | last_res->msg->body = create_sdp_body(last_res->pool, local); |
| 1136 | } |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1137 | |
| 1138 | /* Start negotiation, if ready. */ |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1139 | if (neg_state == PJMEDIA_SDP_NEG_STATE_WAIT_NEGO) { |
Benny Prijono | 9519658 | 2006-02-09 00:13:40 +0000 | [diff] [blame] | 1140 | status = inv_negotiate_sdp(inv); |
| 1141 | if (status != PJ_SUCCESS) { |
| 1142 | pjsip_tx_data_dec_ref(last_res); |
| 1143 | return status; |
| 1144 | } |
| 1145 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1146 | } |
| 1147 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1148 | |
| 1149 | *p_tdata = last_res; |
| 1150 | |
| 1151 | return PJ_SUCCESS; |
| 1152 | } |
| 1153 | |
| 1154 | |
| 1155 | /* |
| 1156 | * End session. |
| 1157 | */ |
| 1158 | PJ_DEF(pj_status_t) pjsip_inv_end_session( pjsip_inv_session *inv, |
| 1159 | int st_code, |
| 1160 | const pj_str_t *st_text, |
| 1161 | pjsip_tx_data **p_tdata ) |
| 1162 | { |
| 1163 | pjsip_tx_data *tdata; |
| 1164 | pj_status_t status; |
| 1165 | |
| 1166 | /* Verify arguments. */ |
| 1167 | PJ_ASSERT_RETURN(inv && p_tdata, PJ_EINVAL); |
| 1168 | |
| 1169 | /* Create appropriate message. */ |
| 1170 | switch (inv->state) { |
| 1171 | case PJSIP_INV_STATE_CALLING: |
| 1172 | case PJSIP_INV_STATE_EARLY: |
| 1173 | case PJSIP_INV_STATE_INCOMING: |
| 1174 | |
| 1175 | if (inv->role == PJSIP_ROLE_UAC) { |
| 1176 | |
| 1177 | /* For UAC when session has not been confirmed, create CANCEL. */ |
| 1178 | |
| 1179 | /* MUST have the original UAC INVITE transaction. */ |
| 1180 | PJ_ASSERT_RETURN(inv->invite_tsx != NULL, PJ_EBUG); |
| 1181 | |
| 1182 | /* But CANCEL should only be called when we have received a |
| 1183 | * provisional response. If we haven't received any responses, |
| 1184 | * just destroy the transaction. |
| 1185 | */ |
| 1186 | if (inv->invite_tsx->status_code < 100) { |
| 1187 | |
| 1188 | pjsip_tsx_terminate(inv->invite_tsx, 487); |
| 1189 | |
| 1190 | return PJSIP_ETSXDESTROYED; |
| 1191 | } |
| 1192 | |
| 1193 | /* The CSeq here assumes that the dialog is started with an |
| 1194 | * INVITE session. This may not be correct; dialog can be |
| 1195 | * started as SUBSCRIBE session. |
| 1196 | * So fix this! |
| 1197 | */ |
| 1198 | status = pjsip_endpt_create_cancel(inv->dlg->endpt, |
| 1199 | inv->invite_tsx->last_tx, |
| 1200 | &tdata); |
| 1201 | |
| 1202 | } else { |
| 1203 | |
| 1204 | /* For UAS, send a final response. */ |
| 1205 | tdata = inv->invite_tsx->last_tx; |
| 1206 | PJ_ASSERT_RETURN(tdata != NULL, PJ_EINVALIDOP); |
| 1207 | |
| 1208 | status = pjsip_dlg_modify_response(inv->dlg, tdata, st_code, |
| 1209 | st_text); |
| 1210 | } |
| 1211 | break; |
| 1212 | |
| 1213 | case PJSIP_INV_STATE_CONNECTING: |
| 1214 | case PJSIP_INV_STATE_CONFIRMED: |
| 1215 | /* For established dialog, send BYE */ |
| 1216 | status = pjsip_dlg_create_request(inv->dlg, &pjsip_bye_method, -1, |
| 1217 | &tdata); |
| 1218 | break; |
| 1219 | |
| 1220 | case PJSIP_INV_STATE_DISCONNECTED: |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1221 | /* No need to do anything. */ |
| 1222 | PJ_TODO(RETURN_A_PROPER_STATUS_CODE_HERE); |
| 1223 | return PJ_EINVALIDOP; |
| 1224 | |
| 1225 | default: |
| 1226 | pj_assert("!Invalid operation!"); |
| 1227 | return PJ_EINVALIDOP; |
| 1228 | } |
| 1229 | |
| 1230 | if (status != PJ_SUCCESS) |
| 1231 | return status; |
| 1232 | |
| 1233 | |
| 1234 | /* Done */ |
| 1235 | |
| 1236 | *p_tdata = tdata; |
| 1237 | |
| 1238 | return PJ_SUCCESS; |
| 1239 | } |
| 1240 | |
| 1241 | |
| 1242 | /* |
| 1243 | * Create re-INVITE. |
| 1244 | */ |
| 1245 | PJ_DEF(pj_status_t) pjsip_inv_reinvite( pjsip_inv_session *inv, |
| 1246 | const pj_str_t *new_contact, |
| 1247 | const pjmedia_sdp_session *new_offer, |
| 1248 | pjsip_tx_data **p_tdata ) |
| 1249 | { |
| 1250 | PJ_UNUSED_ARG(inv); |
| 1251 | PJ_UNUSED_ARG(new_contact); |
| 1252 | PJ_UNUSED_ARG(new_offer); |
| 1253 | PJ_UNUSED_ARG(p_tdata); |
| 1254 | |
| 1255 | PJ_TODO(CREATE_REINVITE_REQUEST); |
| 1256 | return PJ_ENOTSUP; |
| 1257 | } |
| 1258 | |
| 1259 | /* |
| 1260 | * Create UPDATE. |
| 1261 | */ |
| 1262 | PJ_DEF(pj_status_t) pjsip_inv_update ( pjsip_inv_session *inv, |
| 1263 | const pj_str_t *new_contact, |
| 1264 | const pjmedia_sdp_session *new_offer, |
| 1265 | pjsip_tx_data **p_tdata ) |
| 1266 | { |
| 1267 | PJ_UNUSED_ARG(inv); |
| 1268 | PJ_UNUSED_ARG(new_contact); |
| 1269 | PJ_UNUSED_ARG(new_offer); |
| 1270 | PJ_UNUSED_ARG(p_tdata); |
| 1271 | |
| 1272 | PJ_TODO(CREATE_UPDATE_REQUEST); |
| 1273 | return PJ_ENOTSUP; |
| 1274 | } |
| 1275 | |
| 1276 | /* |
| 1277 | * Send a request or response message. |
| 1278 | */ |
| 1279 | PJ_DEF(pj_status_t) pjsip_inv_send_msg( pjsip_inv_session *inv, |
| 1280 | pjsip_tx_data *tdata, |
| 1281 | void *token ) |
| 1282 | { |
| 1283 | pj_status_t status; |
| 1284 | |
| 1285 | /* Verify arguments. */ |
| 1286 | PJ_ASSERT_RETURN(inv && tdata, PJ_EINVAL); |
| 1287 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 1288 | PJ_LOG(5,(inv->obj_name, "Sending %s", |
| 1289 | pjsip_tx_data_get_info(tdata))); |
| 1290 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1291 | if (tdata->msg->type == PJSIP_REQUEST_MSG) { |
| 1292 | pjsip_transaction *tsx; |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1293 | struct tsx_inv_data *tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1294 | |
| 1295 | status = pjsip_dlg_send_request(inv->dlg, tdata, &tsx); |
| 1296 | if (status != PJ_SUCCESS) |
| 1297 | return status; |
| 1298 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1299 | tsx_inv_data = pj_pool_zalloc(tsx->pool, sizeof(struct tsx_inv_data)); |
| 1300 | tsx_inv_data->inv = inv; |
| 1301 | |
| 1302 | tsx->mod_data[mod_inv.mod.id] = tsx_inv_data; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1303 | tsx->mod_data[mod_inv.app_user->id] = token; |
| 1304 | |
| 1305 | } else { |
| 1306 | pjsip_cseq_hdr *cseq; |
| 1307 | |
| 1308 | /* Can only do this to send response to original INVITE |
| 1309 | * request. |
| 1310 | */ |
| 1311 | PJ_ASSERT_RETURN((cseq=pjsip_msg_find_hdr(tdata->msg, PJSIP_H_CSEQ, NULL)) != NULL && |
| 1312 | (cseq->cseq == inv->invite_tsx->cseq), |
| 1313 | PJ_EINVALIDOP); |
| 1314 | |
| 1315 | status = pjsip_dlg_send_response(inv->dlg, inv->invite_tsx, tdata); |
| 1316 | if (status != PJ_SUCCESS) |
| 1317 | return status; |
| 1318 | } |
| 1319 | |
| 1320 | /* Done (?) */ |
| 1321 | return PJ_SUCCESS; |
| 1322 | } |
| 1323 | |
| 1324 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1325 | /* |
| 1326 | * Respond to incoming CANCEL request. |
| 1327 | */ |
| 1328 | static void inv_respond_incoming_cancel(pjsip_inv_session *inv, |
| 1329 | pjsip_transaction *cancel_tsx, |
| 1330 | pjsip_rx_data *rdata) |
| 1331 | { |
| 1332 | pjsip_tx_data *tdata; |
| 1333 | pjsip_transaction *invite_tsx; |
| 1334 | pj_str_t key; |
| 1335 | pj_status_t status; |
| 1336 | |
| 1337 | /* See if we have matching INVITE server transaction: */ |
| 1338 | |
| 1339 | pjsip_tsx_create_key(rdata->tp_info.pool, &key, PJSIP_ROLE_UAS, |
| 1340 | &pjsip_invite_method, rdata); |
| 1341 | invite_tsx = pjsip_tsx_layer_find_tsx(&key, PJ_TRUE); |
| 1342 | |
| 1343 | if (invite_tsx == NULL) { |
| 1344 | |
| 1345 | /* Invite transaction not found! |
| 1346 | * Respond CANCEL with 491 (RFC 3261 Section 9.2 page 42) |
| 1347 | */ |
| 1348 | status = pjsip_dlg_create_response( inv->dlg, rdata, 200, NULL, |
| 1349 | &tdata); |
| 1350 | |
| 1351 | } else { |
| 1352 | /* Always answer CANCEL will 200 (OK) regardless of |
| 1353 | * the state of the INVITE transaction. |
| 1354 | */ |
| 1355 | status = pjsip_dlg_create_response( inv->dlg, rdata, 200, NULL, |
| 1356 | &tdata); |
| 1357 | } |
| 1358 | |
| 1359 | /* See if we have created the response successfully. */ |
| 1360 | if (status != PJ_SUCCESS) return; |
| 1361 | |
| 1362 | /* Send the CANCEL response */ |
| 1363 | status = pjsip_dlg_send_response(inv->dlg, cancel_tsx, tdata); |
| 1364 | if (status != PJ_SUCCESS) return; |
| 1365 | |
| 1366 | |
| 1367 | /* See if we need to terminate the UAS INVITE transaction |
| 1368 | * with 487 (Request Terminated) response. |
| 1369 | */ |
| 1370 | if (invite_tsx && invite_tsx->status_code < 200) { |
| 1371 | |
| 1372 | pj_assert(invite_tsx->last_tx != NULL); |
| 1373 | |
| 1374 | tdata = invite_tsx->last_tx; |
| 1375 | |
| 1376 | status = pjsip_dlg_modify_response(inv->dlg, tdata, 487, NULL); |
| 1377 | if (status == PJ_SUCCESS) |
| 1378 | pjsip_dlg_send_response(inv->dlg, invite_tsx, tdata); |
| 1379 | } |
| 1380 | |
| 1381 | if (invite_tsx) |
| 1382 | pj_mutex_unlock(invite_tsx->mutex); |
| 1383 | } |
| 1384 | |
| 1385 | |
| 1386 | /* |
| 1387 | * Respond to incoming BYE request. |
| 1388 | */ |
| 1389 | static void inv_respond_incoming_bye( pjsip_inv_session *inv, |
| 1390 | pjsip_transaction *bye_tsx, |
| 1391 | pjsip_rx_data *rdata, |
| 1392 | pjsip_event *e ) |
| 1393 | { |
| 1394 | pj_status_t status; |
| 1395 | pjsip_tx_data *tdata; |
| 1396 | |
| 1397 | /* Respond BYE with 200: */ |
| 1398 | |
| 1399 | status = pjsip_dlg_create_response(inv->dlg, rdata, 200, NULL, &tdata); |
| 1400 | if (status != PJ_SUCCESS) return; |
| 1401 | |
| 1402 | status = pjsip_dlg_send_response(inv->dlg, bye_tsx, tdata); |
| 1403 | if (status != PJ_SUCCESS) return; |
| 1404 | |
| 1405 | /* Terminate session: */ |
| 1406 | |
| 1407 | if (inv->state != PJSIP_INV_STATE_DISCONNECTED) |
| 1408 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 1409 | } |
| 1410 | |
| 1411 | /* |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1412 | * Respond to BYE request. |
| 1413 | */ |
| 1414 | static void inv_handle_bye_response( pjsip_inv_session *inv, |
| 1415 | pjsip_transaction *tsx, |
| 1416 | pjsip_rx_data *rdata, |
| 1417 | pjsip_event *e ) |
| 1418 | { |
| 1419 | pj_status_t status; |
| 1420 | |
| 1421 | if (e->body.tsx_state.type != PJSIP_EVENT_RX_MSG) { |
| 1422 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 1423 | return; |
| 1424 | } |
| 1425 | |
| 1426 | /* Handle 401/407 challenge. */ |
| 1427 | if (tsx->status_code == 401 || tsx->status_code == 407) { |
| 1428 | |
| 1429 | pjsip_tx_data *tdata; |
| 1430 | |
| 1431 | status = pjsip_auth_clt_reinit_req( &inv->dlg->auth_sess, |
| 1432 | rdata, |
| 1433 | tsx->last_tx, |
| 1434 | &tdata); |
| 1435 | |
| 1436 | if (status != PJ_SUCCESS) { |
| 1437 | |
| 1438 | /* Does not have proper credentials. |
| 1439 | * End the session anyway. |
| 1440 | */ |
| 1441 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 1442 | |
| 1443 | } else { |
| 1444 | /* Re-send BYE. */ |
| 1445 | status = pjsip_inv_send_msg(inv, tdata, NULL ); |
| 1446 | } |
| 1447 | |
| 1448 | } else { |
| 1449 | |
| 1450 | /* End the session. */ |
| 1451 | |
| 1452 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 1453 | } |
| 1454 | |
| 1455 | } |
| 1456 | |
| 1457 | /* |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1458 | * State NULL is before anything is sent/received. |
| 1459 | */ |
| 1460 | 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] | 1461 | { |
| 1462 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 1463 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 1464 | |
| 1465 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 1466 | |
| 1467 | if (tsx->method.id == PJSIP_INVITE_METHOD) { |
| 1468 | |
| 1469 | if (dlg->role == PJSIP_ROLE_UAC) { |
| 1470 | |
| 1471 | /* Keep the initial INVITE transaction. */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1472 | if (inv->invite_tsx == NULL) |
| 1473 | inv->invite_tsx = tsx; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1474 | |
| 1475 | switch (tsx->state) { |
| 1476 | case PJSIP_TSX_STATE_CALLING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1477 | inv_set_state(inv, PJSIP_INV_STATE_CALLING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1478 | break; |
| 1479 | default: |
| 1480 | pj_assert(!"Unexpected state"); |
| 1481 | break; |
| 1482 | } |
| 1483 | |
| 1484 | } else { |
| 1485 | switch (tsx->state) { |
| 1486 | case PJSIP_TSX_STATE_TRYING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1487 | inv_set_state(inv, PJSIP_INV_STATE_INCOMING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1488 | break; |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1489 | case PJSIP_TSX_STATE_PROCEEDING: |
| 1490 | inv_set_state(inv, PJSIP_INV_STATE_INCOMING, e); |
| 1491 | if (tsx->status_code > 100) |
| 1492 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
| 1493 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1494 | default: |
| 1495 | pj_assert(!"Unexpected state"); |
| 1496 | } |
| 1497 | } |
| 1498 | |
| 1499 | } else { |
| 1500 | pj_assert(!"Unexpected transaction type"); |
| 1501 | } |
| 1502 | } |
| 1503 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1504 | /* |
| 1505 | * State CALLING is after sending initial INVITE request but before |
| 1506 | * any response (with tag) is received. |
| 1507 | */ |
| 1508 | 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] | 1509 | { |
| 1510 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 1511 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1512 | pj_status_t status; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1513 | |
| 1514 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 1515 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1516 | if (tsx == inv->invite_tsx) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1517 | |
| 1518 | switch (tsx->state) { |
| 1519 | |
| 1520 | case PJSIP_TSX_STATE_PROCEEDING: |
| 1521 | if (dlg->remote.info->tag.slen) { |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1522 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1523 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1524 | |
| 1525 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 1526 | e->body.tsx_state.src.rdata); |
| 1527 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1528 | } else { |
| 1529 | /* Ignore 100 (Trying) response, as it doesn't change |
| 1530 | * session state. It only ceases retransmissions. |
| 1531 | */ |
| 1532 | } |
| 1533 | break; |
| 1534 | |
| 1535 | case PJSIP_TSX_STATE_COMPLETED: |
| 1536 | if (tsx->status_code/100 == 2) { |
| 1537 | |
| 1538 | /* This should not happen. |
| 1539 | * When transaction receives 2xx, it should be terminated |
| 1540 | */ |
| 1541 | pj_assert(0); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1542 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1543 | |
| 1544 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 1545 | e->body.tsx_state.src.rdata); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1546 | |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1547 | } else if (tsx->status_code==401 || tsx->status_code==407) { |
| 1548 | |
| 1549 | /* Handle authentication failure: |
| 1550 | * Resend the request with Authorization header. |
| 1551 | */ |
| 1552 | pjsip_tx_data *tdata; |
| 1553 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1554 | status = pjsip_auth_clt_reinit_req(&inv->dlg->auth_sess, |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1555 | e->body.tsx_state.src.rdata, |
| 1556 | tsx->last_tx, |
| 1557 | &tdata); |
| 1558 | |
| 1559 | if (status != PJ_SUCCESS) { |
| 1560 | |
| 1561 | /* Does not have proper credentials. |
| 1562 | * End the session. |
| 1563 | */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1564 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1565 | |
| 1566 | } else { |
| 1567 | |
| 1568 | /* Restart session. */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1569 | inv->state = PJSIP_INV_STATE_NULL; |
| 1570 | inv->invite_tsx = NULL; |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1571 | |
| 1572 | /* Send the request. */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1573 | status = pjsip_inv_send_msg(inv, tdata, NULL ); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1574 | } |
| 1575 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1576 | } else { |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1577 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1578 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1579 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1580 | } |
| 1581 | break; |
| 1582 | |
| 1583 | case PJSIP_TSX_STATE_TERMINATED: |
| 1584 | /* INVITE transaction can be terminated either because UAC |
| 1585 | * transaction received 2xx response or because of transport |
| 1586 | * error. |
| 1587 | */ |
| 1588 | if (tsx->status_code/100 == 2) { |
| 1589 | /* This must be receipt of 2xx response */ |
| 1590 | |
| 1591 | /* Set state to CONNECTING */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1592 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1593 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1594 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 1595 | e->body.tsx_state.src.rdata); |
| 1596 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1597 | /* Send ACK */ |
| 1598 | pj_assert(e->body.tsx_state.type == PJSIP_EVENT_RX_MSG); |
| 1599 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1600 | inv_send_ack(inv, e->body.tsx_state.src.rdata); |
Benny Prijono | 5eff043 | 2006-02-09 14:14:21 +0000 | [diff] [blame] | 1601 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1602 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1603 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1604 | } else { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1605 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1606 | } |
| 1607 | break; |
| 1608 | |
Benny Prijono | 34a404e | 2006-02-09 14:38:30 +0000 | [diff] [blame] | 1609 | default: |
| 1610 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1611 | } |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 1612 | |
| 1613 | } else if (inv->role == PJSIP_ROLE_UAC && |
| 1614 | tsx->role == PJSIP_ROLE_UAC && |
| 1615 | tsx->method.id == PJSIP_CANCEL_METHOD) |
| 1616 | { |
| 1617 | /* |
| 1618 | * Handle case when outgoing CANCEL is answered with 481 (Call/ |
| 1619 | * Transaction Does Not Exist), 408, or when it's timed out. In these |
| 1620 | * cases, disconnect session (i.e. dialog usage only). |
| 1621 | */ |
| 1622 | if (tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST || |
| 1623 | tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT || |
| 1624 | tsx->status_code == PJSIP_SC_TSX_TIMEOUT || |
| 1625 | PJSIP_SC_TSX_TRANSPORT_ERROR) |
| 1626 | { |
| 1627 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 1628 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1629 | } |
| 1630 | } |
| 1631 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1632 | /* |
| 1633 | * State INCOMING is after we received the request, but before |
| 1634 | * responses with tag are sent. |
| 1635 | */ |
| 1636 | 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] | 1637 | { |
| 1638 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 1639 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 1640 | |
| 1641 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 1642 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1643 | if (tsx == inv->invite_tsx) { |
| 1644 | |
| 1645 | /* |
| 1646 | * Handle the INVITE state transition. |
| 1647 | */ |
| 1648 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1649 | switch (tsx->state) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1650 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1651 | case PJSIP_TSX_STATE_PROCEEDING: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1652 | /* |
| 1653 | * Transaction sent provisional response. |
| 1654 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1655 | if (tsx->status_code > 100) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1656 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1657 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1658 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1659 | case PJSIP_TSX_STATE_COMPLETED: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1660 | /* |
| 1661 | * Transaction sent final response. |
| 1662 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1663 | if (tsx->status_code/100 == 2) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1664 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1665 | else |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1666 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1667 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1668 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1669 | case PJSIP_TSX_STATE_TERMINATED: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1670 | /* |
| 1671 | * This happens on transport error (e.g. failed to send |
| 1672 | * response) |
| 1673 | */ |
| 1674 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1675 | break; |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1676 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1677 | default: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1678 | pj_assert(!"Unexpected INVITE state"); |
| 1679 | break; |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1680 | } |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1681 | |
| 1682 | } else if (tsx->method.id == PJSIP_CANCEL_METHOD && |
| 1683 | tsx->role == PJSIP_ROLE_UAS && |
| 1684 | tsx->state < PJSIP_TSX_STATE_COMPLETED && |
| 1685 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG ) |
| 1686 | { |
| 1687 | |
| 1688 | /* |
| 1689 | * Handle incoming CANCEL request. |
| 1690 | */ |
| 1691 | |
| 1692 | inv_respond_incoming_cancel(inv, tsx, e->body.tsx_state.src.rdata); |
| 1693 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1694 | } |
| 1695 | } |
| 1696 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1697 | /* |
| 1698 | * State EARLY is for both UAS and UAC, after response with To tag |
| 1699 | * is sent/received. |
| 1700 | */ |
| 1701 | 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] | 1702 | { |
| 1703 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 1704 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 1705 | |
| 1706 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 1707 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1708 | if (tsx == inv->invite_tsx) { |
| 1709 | |
| 1710 | /* |
| 1711 | * Handle the INVITE state progress. |
| 1712 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1713 | |
| 1714 | switch (tsx->state) { |
| 1715 | |
| 1716 | case PJSIP_TSX_STATE_PROCEEDING: |
| 1717 | /* Send/received another provisional response. */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1718 | inv_set_state(inv, PJSIP_INV_STATE_EARLY, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1719 | |
| 1720 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 1721 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 1722 | e->body.tsx_state.src.rdata); |
| 1723 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1724 | break; |
| 1725 | |
| 1726 | case PJSIP_TSX_STATE_COMPLETED: |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1727 | if (tsx->status_code/100 == 2) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1728 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1729 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 1730 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 1731 | e->body.tsx_state.src.rdata); |
| 1732 | } |
| 1733 | |
| 1734 | } else |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1735 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1736 | break; |
| 1737 | |
| 1738 | case PJSIP_TSX_STATE_TERMINATED: |
| 1739 | /* INVITE transaction can be terminated either because UAC |
| 1740 | * transaction received 2xx response or because of transport |
| 1741 | * error. |
| 1742 | */ |
| 1743 | if (tsx->status_code/100 == 2) { |
| 1744 | |
| 1745 | /* This must be receipt of 2xx response */ |
| 1746 | |
| 1747 | /* Set state to CONNECTING */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1748 | inv_set_state(inv, PJSIP_INV_STATE_CONNECTING, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1749 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1750 | if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { |
| 1751 | inv_check_sdp_in_incoming_msg(inv, tsx, |
| 1752 | e->body.tsx_state.src.rdata); |
| 1753 | } |
| 1754 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1755 | /* if UAC, send ACK and move state to confirmed. */ |
| 1756 | if (tsx->role == PJSIP_ROLE_UAC) { |
| 1757 | pj_assert(e->body.tsx_state.type == PJSIP_EVENT_RX_MSG); |
| 1758 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1759 | inv_send_ack(inv, e->body.tsx_state.src.rdata); |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1760 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1761 | } |
| 1762 | |
| 1763 | } else { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1764 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1765 | } |
| 1766 | break; |
| 1767 | |
| 1768 | default: |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1769 | pj_assert(!"Unexpected INVITE tsx state"); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1770 | } |
| 1771 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1772 | } else if (inv->role == PJSIP_ROLE_UAS && |
| 1773 | tsx->role == PJSIP_ROLE_UAS && |
| 1774 | tsx->method.id == PJSIP_CANCEL_METHOD && |
| 1775 | tsx->state < PJSIP_TSX_STATE_COMPLETED && |
| 1776 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG ) |
| 1777 | { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1778 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1779 | /* |
| 1780 | * Handle incoming CANCEL request. |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1781 | */ |
| 1782 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1783 | inv_respond_incoming_cancel(inv, tsx, e->body.tsx_state.src.rdata); |
| 1784 | |
Benny Prijono | e4f2abb | 2006-02-10 14:04:05 +0000 | [diff] [blame^] | 1785 | } else if (inv->role == PJSIP_ROLE_UAC && |
| 1786 | tsx->role == PJSIP_ROLE_UAC && |
| 1787 | tsx->method.id == PJSIP_CANCEL_METHOD) |
| 1788 | { |
| 1789 | /* |
| 1790 | * Handle case when outgoing CANCEL is answered with 481 (Call/ |
| 1791 | * Transaction Does Not Exist), 408, or when it's timed out. In these |
| 1792 | * cases, disconnect session (i.e. dialog usage only). |
| 1793 | */ |
| 1794 | if (tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST || |
| 1795 | tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT || |
| 1796 | tsx->status_code == PJSIP_SC_TSX_TIMEOUT || |
| 1797 | PJSIP_SC_TSX_TRANSPORT_ERROR) |
| 1798 | { |
| 1799 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
| 1800 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1801 | } |
| 1802 | } |
| 1803 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1804 | /* |
| 1805 | * State CONNECTING is after 2xx response to INVITE is sent/received. |
| 1806 | */ |
| 1807 | 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] | 1808 | { |
| 1809 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 1810 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 1811 | |
| 1812 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 1813 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1814 | if (tsx == inv->invite_tsx) { |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1815 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1816 | /* |
| 1817 | * Handle INVITE state progression. |
| 1818 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1819 | switch (tsx->state) { |
| 1820 | |
| 1821 | case PJSIP_TSX_STATE_CONFIRMED: |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1822 | if (tsx->status_code/100 == 2) |
| 1823 | inv_set_state(inv, PJSIP_INV_STATE_CONFIRMED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1824 | break; |
| 1825 | |
| 1826 | case PJSIP_TSX_STATE_TERMINATED: |
| 1827 | /* INVITE transaction can be terminated either because UAC |
| 1828 | * transaction received 2xx response or because of transport |
| 1829 | * error. |
| 1830 | */ |
| 1831 | if (tsx->status_code/100 != 2) { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1832 | inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1833 | } |
| 1834 | break; |
| 1835 | |
| 1836 | case PJSIP_TSX_STATE_DESTROYED: |
| 1837 | /* Do nothing. */ |
| 1838 | break; |
| 1839 | |
| 1840 | default: |
| 1841 | pj_assert(!"Unexpected state"); |
| 1842 | } |
| 1843 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1844 | } else if (tsx->role == PJSIP_ROLE_UAS && |
| 1845 | tsx->method.id == PJSIP_BYE_METHOD && |
| 1846 | tsx->status_code < 200 && |
| 1847 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 1848 | { |
| 1849 | |
| 1850 | /* |
| 1851 | * Handle incoming BYE. |
| 1852 | */ |
| 1853 | |
| 1854 | inv_respond_incoming_bye( inv, tsx, e->body.tsx_state.src.rdata, e ); |
| 1855 | |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1856 | } else if (tsx->method.id == PJSIP_BYE_METHOD && |
| 1857 | tsx->role == PJSIP_ROLE_UAC && |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1858 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 1859 | tsx->state == PJSIP_TSX_STATE_TERMINATED)) |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1860 | { |
| 1861 | |
| 1862 | /* |
| 1863 | * Outgoing BYE |
| 1864 | */ |
| 1865 | inv_handle_bye_response( inv, tsx, e->body.tsx_state.src.rdata, e); |
| 1866 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1867 | } |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1868 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1869 | } |
| 1870 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1871 | /* |
| 1872 | * State CONFIRMED is after ACK is sent/received. |
| 1873 | */ |
| 1874 | 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] | 1875 | { |
| 1876 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 1877 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
| 1878 | |
| 1879 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 1880 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1881 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1882 | if (tsx->method.id == PJSIP_BYE_METHOD && |
| 1883 | tsx->role == PJSIP_ROLE_UAC && |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1884 | (tsx->state == PJSIP_TSX_STATE_COMPLETED || |
| 1885 | tsx->state == PJSIP_TSX_STATE_TERMINATED)) |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1886 | { |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1887 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1888 | /* |
Benny Prijono | 3899823 | 2006-02-08 22:44:25 +0000 | [diff] [blame] | 1889 | * Outgoing BYE |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1890 | */ |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1891 | |
Benny Prijono | a66c715 | 2006-02-09 01:26:14 +0000 | [diff] [blame] | 1892 | 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] | 1893 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1894 | } |
| 1895 | else if (tsx->method.id == PJSIP_BYE_METHOD && |
| 1896 | tsx->role == PJSIP_ROLE_UAS && |
| 1897 | tsx->status_code < 200 && |
| 1898 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 1899 | { |
Benny Prijono | ccf9562 | 2006-02-07 18:48:01 +0000 | [diff] [blame] | 1900 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1901 | /* |
| 1902 | * Handle incoming BYE. |
| 1903 | */ |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1904 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1905 | inv_respond_incoming_bye( inv, tsx, e->body.tsx_state.src.rdata, e ); |
| 1906 | |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1907 | } |
| 1908 | } |
| 1909 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1910 | /* |
| 1911 | * After session has been terminated, but before dialog is destroyed |
| 1912 | * (because dialog has other usages, or because dialog is waiting for |
| 1913 | * the last transaction to terminate). |
| 1914 | */ |
| 1915 | 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] | 1916 | { |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1917 | pjsip_transaction *tsx = e->body.tsx_state.tsx; |
| 1918 | pjsip_dialog *dlg = pjsip_tsx_get_dlg(tsx); |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1919 | |
Benny Prijono | 8ad5535 | 2006-02-08 11:16:05 +0000 | [diff] [blame] | 1920 | PJ_ASSERT_ON_FAIL(tsx && dlg, return); |
| 1921 | |
| 1922 | if (tsx->method.id == PJSIP_BYE_METHOD && |
| 1923 | tsx->role == PJSIP_ROLE_UAS && |
| 1924 | tsx->status_code < 200 && |
| 1925 | e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) |
| 1926 | { |
| 1927 | |
| 1928 | /* |
| 1929 | * Be nice, handle incoming BYE. |
| 1930 | */ |
| 1931 | |
| 1932 | inv_respond_incoming_bye( inv, tsx, e->body.tsx_state.src.rdata, e ); |
| 1933 | |
| 1934 | } |
Benny Prijono | 268ca61 | 2006-02-07 12:34:11 +0000 | [diff] [blame] | 1935 | } |
| 1936 | |