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