diff options
Diffstat (limited to 'tinySIP/src/dialogs/tsip_dialog_invite.ice.c')
| -rw-r--r-- | tinySIP/src/dialogs/tsip_dialog_invite.ice.c | 617 |
1 files changed, 617 insertions, 0 deletions
diff --git a/tinySIP/src/dialogs/tsip_dialog_invite.ice.c b/tinySIP/src/dialogs/tsip_dialog_invite.ice.c new file mode 100644 index 0000000..823e548 --- /dev/null +++ b/tinySIP/src/dialogs/tsip_dialog_invite.ice.c @@ -0,0 +1,617 @@ +/* + * Copyright (C) 2012 Doubango Telecom <http://www.doubango.org> + * + * Contact: Mamadou Diop <diopmamadou(at)doubango[dot]org> + * + * This file is part of Open Source Doubango Framework. + * + * DOUBANGO is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as publishd by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * DOUBANGO is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DOUBANGO. + * + */ +#include "tinysip/dialogs/tsip_dialog_invite.h" + +#include "tinysip/dialogs/tsip_dialog_invite.common.h" + +#include "tinysdp/parsers/tsdp_parser_message.h" +#include "tinysdp/tsdp_message.h" +#include "tinysdp/headers/tsdp_header_S.h" +#include "tinysdp/headers/tsdp_header_O.h" + +#include "stun/tnet_stun_types.h" +#include "ice/tnet_ice_ctx.h" + +#include "tsk_debug.h" + +extern int tsip_dialog_invite_msession_start(tsip_dialog_invite_t *self); + +static int tsip_dialog_invite_ice_create_ctx(tsip_dialog_invite_t * self, tmedia_type_t media_type); +static int tsip_dialog_invite_ice_audio_callback(const tnet_ice_event_t *e); +static int tsip_dialog_invite_ice_video_callback(const tnet_ice_event_t *e); +int tsip_dialog_invite_ice_set_media_type(tsip_dialog_invite_t * self, tmedia_type_t media_type); +tsk_bool_t tsip_dialog_invite_ice_got_local_candidates(const tsip_dialog_invite_t * self); +int tsip_dialog_invite_ice_process_ro(tsip_dialog_invite_t * self, const tsdp_message_t* sdp_ro, tsk_bool_t is_remote_offer); + +#define tsip_dialog_invite_ice_cancel_silent_and_sync_ctx(_self) \ +tsip_dialog_invite_ice_set_sync_mode_ctx((_self), tsk_true); \ +tsip_dialog_invite_ice_set_silent_mode_ctx((_self), tsk_true); \ +tsip_dialog_invite_ice_cancel_ctx((_self)); /* "cancelled" event will not be sent and we're sure that cancel operation will be done when the function exit */ \ +tsip_dialog_invite_ice_set_sync_mode_ctx((_self), tsk_false); \ +tsip_dialog_invite_ice_set_silent_mode_ctx((_self), tsk_false); \ + +/* ======================== transitions ======================== */ +// Use "Current" instead of "Any" to avoid priority reordering +static int x0500_Current_2_Current_X_oINVITE(va_list *app); +static int x0500_Current_2_Current_X_iINVITE(va_list *app); + +/* ======================== conds ======================== */ +static tsk_bool_t _fsm_cond_get_local_candidates(tsip_dialog_invite_t* self, tsip_message_t* message) +{ + if(self->supported.ice){ + tsk_bool_t use_ice = tsk_false; + // "action->media.type" will be defined for locally initiated media update + tmedia_type_t new_media = TSIP_DIALOG(self)->curr_action ? TSIP_DIALOG(self)->curr_action->media.type : tmedia_none; + + if(message && TSIP_MESSAGE_HAS_CONTENT(message) && tsk_striequals("application/sdp", TSIP_MESSAGE_CONTENT_TYPE(message))){ + // If this code is called this means that we are the "answerer" + // only gets the candidates if ICE is enabled and the remote peer supports ICE + tsdp_message_t* sdp_ro; + const tsdp_header_M_t* M; + int index; + if(!(sdp_ro = tsdp_message_parse(TSIP_MESSAGE_CONTENT_DATA(message), TSIP_MESSAGE_CONTENT_DATA_LENGTH(message)))){ + TSK_DEBUG_ERROR("Failed to parse remote sdp message"); + return tsk_false; + } + + index = 0; + while((M = (const tsdp_header_M_t*)tsdp_message_get_headerAt(sdp_ro, tsdp_htype_M, index++))){ + if(!tsdp_header_M_findA(M, "candidate")){ + use_ice = tsk_false; // do not use ICE if at least on media is ICE-less (e.g. MSRP) + break; + } + use_ice = tsk_true; // only use ICE if there is a least one media line + } + + new_media = tmedia_type_from_sdp(sdp_ro); + + TSK_OBJECT_SAFE_FREE(sdp_ro); + } + else if(!message){ + // we are the "offerer" -> use ICE only for audio or video medias (ignore ice for MSRP) + use_ice = (new_media & tmedia_audio) || (new_media & tmedia_video); + } + + if(use_ice){ + if(!self->ice.ctx_audio && !self->ice.ctx_video){ // First time + return tsk_true; + } + else{ + if(self->ice.media_type != new_media){ + return tsk_true; + } + return !tsip_dialog_invite_ice_got_local_candidates(self); + } + } + } + return tsk_false; +} + +int tsip_dialog_invite_ice_init(tsip_dialog_invite_t *self) +{ + tsk_fsm_set(TSIP_DIALOG_GET_FSM(self), + // Current -> (oINVITE) -> Current + TSK_FSM_ADD(tsk_fsm_state_current, _fsm_action_oINVITE, _fsm_cond_get_local_candidates, tsk_fsm_state_current, x0500_Current_2_Current_X_oINVITE, "x0500_Current_2_Current_X_oINVITE"), + // Current -> (iINVITE) -> Current + TSK_FSM_ADD(tsk_fsm_state_current, _fsm_action_iINVITE, _fsm_cond_get_local_candidates, tsk_fsm_state_current, x0500_Current_2_Current_X_iINVITE, "x0500_Current_2_Current_X_iINVITE") + ); + + return 0; +} + +int tsip_dialog_invite_ice_timers_set(tsip_dialog_invite_t *self, int64_t timeout) +{ + if(/*tnet_ice_ctx_is_active*/(self->ice.ctx_audio)){ + tnet_ice_ctx_set_concheck_timeout(self->ice.ctx_audio, timeout); + } + if(/*tnet_ice_ctx_is_active*/(self->ice.ctx_video)){ + tnet_ice_ctx_set_concheck_timeout(self->ice.ctx_video, timeout); + } + return 0; +} + +static int tsip_dialog_invite_ice_create_ctx(tsip_dialog_invite_t * self, tmedia_type_t media_type) +{ + int32_t transport_idx; + int ret = 0; + if(!self){ + TSK_DEBUG_ERROR("Invalid parameter"); + return -1; + } + transport_idx = TSIP_DIALOG_GET_STACK(self)->network.transport_idx_default; + if (!self->ice.ctx_audio && (media_type & tmedia_audio)) { + self->ice.ctx_audio = tnet_ice_ctx_create(self->ice.is_jingle, TNET_SOCKET_TYPE_IS_IPV6(TSIP_DIALOG_GET_STACK(self)->network.proxy_cscf_type[transport_idx]), + self->use_rtcp, tsk_false, tsip_dialog_invite_ice_audio_callback, self); + if (!self->ice.ctx_audio) { + TSK_DEBUG_ERROR("Failed to create ICE audio context"); + return -2; + } +#if 0 // @deprecated + ret = tnet_ice_ctx_set_stun(self->ice.ctx_audio, TSIP_DIALOG_GET_SS(self)->media.stun.hostname, TSIP_DIALOG_GET_SS(self)->media.stun.port, kStunSoftware, TSIP_DIALOG_GET_SS(self)->media.stun.username, TSIP_DIALOG_GET_SS(self)->media.stun.password); +#else + ret = tnet_ice_ctx_add_server( + self->ice.ctx_audio, + "udp", // "tcp", "tls", "ws", "wss"... + TSIP_DIALOG_GET_SS(self)->media.stun.hostname, + TSIP_DIALOG_GET_SS(self)->media.stun.port, + TSIP_DIALOG_GET_SS(self)->media.enable_iceturn, + TSIP_DIALOG_GET_SS(self)->media.enable_icestun, + TSIP_DIALOG_GET_SS(self)->media.stun.username, + TSIP_DIALOG_GET_SS(self)->media.stun.password); +#endif + ret = tnet_ice_ctx_set_turn_enabled(self->ice.ctx_audio, TSIP_DIALOG_GET_SS(self)->media.enable_iceturn); + ret = tnet_ice_ctx_set_stun_enabled(self->ice.ctx_audio, TSIP_DIALOG_GET_SS(self)->media.enable_icestun); + ret = tnet_ice_ctx_set_rtcpmux(self->ice.ctx_audio, self->use_rtcpmux); + } + if (!self->ice.ctx_video && (media_type & tmedia_video)) { + self->ice.ctx_video = tnet_ice_ctx_create(self->ice.is_jingle, TNET_SOCKET_TYPE_IS_IPV6(TSIP_DIALOG_GET_STACK(self)->network.proxy_cscf_type[transport_idx]), + self->use_rtcp, tsk_true, tsip_dialog_invite_ice_video_callback, self); + if (!self->ice.ctx_video) { + TSK_DEBUG_ERROR("Failed to create ICE video context"); + return -2; + } +#if 0 // @deprecated + ret = tnet_ice_ctx_set_stun(self->ice.ctx_video, TSIP_DIALOG_GET_SS(self)->media.stun.hostname, TSIP_DIALOG_GET_SS(self)->media.stun.port, kStunSoftware, TSIP_DIALOG_GET_SS(self)->media.stun.username, TSIP_DIALOG_GET_SS(self)->media.stun.password); +#else + ret = tnet_ice_ctx_add_server( + self->ice.ctx_video, + "udp", // "tcp", "tls", "ws", "wss"... + TSIP_DIALOG_GET_SS(self)->media.stun.hostname, + TSIP_DIALOG_GET_SS(self)->media.stun.port, + TSIP_DIALOG_GET_SS(self)->media.enable_iceturn, + TSIP_DIALOG_GET_SS(self)->media.enable_icestun, + TSIP_DIALOG_GET_SS(self)->media.stun.username, + TSIP_DIALOG_GET_SS(self)->media.stun.password); +#endif + ret = tnet_ice_ctx_set_turn_enabled(self->ice.ctx_video, TSIP_DIALOG_GET_SS(self)->media.enable_iceturn); + ret = tnet_ice_ctx_set_stun_enabled(self->ice.ctx_video, TSIP_DIALOG_GET_SS(self)->media.enable_icestun); + ret = tnet_ice_ctx_set_rtcpmux(self->ice.ctx_video, self->use_rtcpmux); + } + + // set media type + ret = tsip_dialog_invite_ice_set_media_type(self, media_type); + + // update session manager with the right ICE contexts + if (self->msession_mgr) { + ret = tmedia_session_mgr_set_ice_ctx(self->msession_mgr, self->ice.ctx_audio, self->ice.ctx_video); + } + + return ret; +} + +int tsip_dialog_invite_ice_set_media_type(tsip_dialog_invite_t * self, tmedia_type_t _media_type) +{ + if(self){ + tmedia_type_t av_media_type = (_media_type & tmedia_audiovideo); // filter to keep audio and video only + // "none" comparison is used to exclude the "first call" + if(self->ice.media_type != tmedia_none && self->ice.media_type != av_media_type){ + // cancels contexts associated to old medias + if(self->ice.ctx_audio && !(av_media_type & tmedia_audio)){ + tnet_ice_ctx_cancel(self->ice.ctx_audio); + } + if(self->ice.ctx_video && !(av_media_type & tmedia_video)){ + tnet_ice_ctx_cancel(self->ice.ctx_video); + } + // cancels contexts associated to new medias (e.g. session "remove" then "add") + // cancel() on newly created contexts don't have any effect + if(self->ice.ctx_audio && (!(av_media_type & tmedia_audio) && (self->ice.media_type & tmedia_audio))){ + //tnet_ice_ctx_cancel(self->ice.ctx_audio); + } + if(self->ice.ctx_video && (!(av_media_type & tmedia_video) && (self->ice.media_type & tmedia_video))){ + //tnet_ice_ctx_cancel(self->ice.ctx_video); + } + } + self->ice.media_type = av_media_type; + } + return 0; +} + +static int tsip_dialog_invite_ice_start_ctx(tsip_dialog_invite_t * self) +{ + int ret = 0; + if(self){ + if((self->ice.media_type & tmedia_audio)){ + if(self->ice.ctx_audio && (ret = tnet_ice_ctx_start(self->ice.ctx_audio)) != 0){ + return ret; + } + } + if((self->ice.media_type & tmedia_video)){ + if(self->ice.ctx_video && (ret = tnet_ice_ctx_start(self->ice.ctx_video)) != 0){ + return ret; + } + } + } + return 0; +} + +static int tsip_dialog_invite_ice_cancel_ctx(tsip_dialog_invite_t * self) +{ + int ret = 0; + if(self){ + if((self->ice.media_type & tmedia_audio)){ + if(self->ice.ctx_audio && (ret = tnet_ice_ctx_cancel(self->ice.ctx_audio)) != 0){ + return ret; + } + } + if((self->ice.media_type & tmedia_video)){ + if(self->ice.ctx_video && (ret = tnet_ice_ctx_cancel(self->ice.ctx_video)) != 0){ + return ret; + } + } + } + return 0; +} + +static int tsip_dialog_invite_ice_set_sync_mode_ctx(tsip_dialog_invite_t * self, tsk_bool_t sync_mode) +{ + int ret = 0; + if(self){ + if((self->ice.media_type & tmedia_audio)){ + if(self->ice.ctx_audio && (ret = tnet_ice_ctx_set_sync_mode(self->ice.ctx_audio, sync_mode)) != 0){ + return ret; + } + } + if((self->ice.media_type & tmedia_video)){ + if(self->ice.ctx_video && (ret = tnet_ice_ctx_set_sync_mode(self->ice.ctx_video, sync_mode)) != 0){ + return ret; + } + } + } + return 0; +} + +static int tsip_dialog_invite_ice_set_silent_mode_ctx(tsip_dialog_invite_t * self, tsk_bool_t silent_mode) +{ + int ret = 0; + if(self){ + if((self->ice.media_type & tmedia_audio)){ + if(self->ice.ctx_audio && (ret = tnet_ice_ctx_set_silent_mode(self->ice.ctx_audio, silent_mode)) != 0){ + return ret; + } + } + if((self->ice.media_type & tmedia_video)){ + if(self->ice.ctx_video && (ret = tnet_ice_ctx_set_silent_mode(self->ice.ctx_video, silent_mode)) != 0){ + return ret; + } + } + } + return 0; +} + +tsk_bool_t tsip_dialog_invite_ice_is_enabled(const tsip_dialog_invite_t * self) +{ + if(self){ + return (self->supported.ice && (tnet_ice_ctx_is_active(self->ice.ctx_audio) || tnet_ice_ctx_is_active(self->ice.ctx_video))); + } + return tsk_false; +} + +tsk_bool_t tsip_dialog_invite_ice_is_connected(const tsip_dialog_invite_t * self) +{ + if(self){ + return (!tnet_ice_ctx_is_active(self->ice.ctx_audio) || tnet_ice_ctx_is_connected(self->ice.ctx_audio)) + && (!tnet_ice_ctx_is_active(self->ice.ctx_video) || tnet_ice_ctx_is_connected(self->ice.ctx_video)); + } + return tsk_false; +} + +tsk_bool_t tsip_dialog_invite_ice_got_local_candidates(const tsip_dialog_invite_t * self) +{ + if(self){ + return (!tnet_ice_ctx_is_active(self->ice.ctx_audio) || tnet_ice_ctx_got_local_candidates(self->ice.ctx_audio)) + && (!tnet_ice_ctx_is_active(self->ice.ctx_video) || tnet_ice_ctx_got_local_candidates(self->ice.ctx_video)); + } + return tsk_false; +} + +int tsip_dialog_invite_ice_save_action(tsip_dialog_invite_t * self, tsk_fsm_action_id action_id, const tsip_action_t* action, const tsip_message_t* message) +{ + if(!self){ + TSK_DEBUG_ERROR("Invalid parameter"); + return -1; + } + + // There are good reasons to ref() the action and message before safe_free() + // /!\ do not change + + self->ice.last_action_id = action_id; + action = tsk_object_ref((tsk_object_t*)action); + TSK_OBJECT_SAFE_FREE(self->ice.last_action); + self->ice.last_action = (tsip_action_t*)action; + + message = tsk_object_ref((tsk_object_t*)message); + TSK_OBJECT_SAFE_FREE(self->ice.last_message); + self->ice.last_message = (tsip_message_t*)message; + return 0; +} + +int tsip_dialog_invite_ice_process_lo(tsip_dialog_invite_t * self, const tsdp_message_t* sdp_lo) +{ + const tsdp_header_M_t* M; + const tsdp_header_A_t *A; + int ret = 0, i; + + if(!self || !sdp_lo){ + TSK_DEBUG_ERROR("Invalid parameter"); + return -1; + } + + // cancels all ICE contexts without candidates + // this happens if codecs negotiations mismatch for one media out of two or three + for(i = 0; i < 2; ++i){ + struct tnet_ice_ctx_s *ctx = i == 0 ? self->ice.ctx_audio : self->ice.ctx_video; + const char* media = i == 0 ? "audio" : "video"; + if(tnet_ice_ctx_is_active(ctx)){ + tsk_bool_t cancel = tsk_true; + if((M = tsdp_message_find_media(sdp_lo, media))){ + if((A = tsdp_header_M_findA(M, "candidate"))){ + cancel = tsk_false; + } + } + if(cancel){ + ret = tnet_ice_ctx_cancel(ctx); + } + } + } + + return ret; +} + +int tsip_dialog_invite_ice_process_ro(tsip_dialog_invite_t * self, const tsdp_message_t* sdp_ro, tsk_bool_t is_remote_offer) +{ + char* ice_remote_candidates; + const tsdp_header_M_t* M; + tsk_size_t index; + const tsdp_header_A_t *A; + const tsdp_header_O_t *O; + const char* sess_ufrag = tsk_null; + const char* sess_pwd = tsk_null; + int ret = 0, i; + struct tnet_ice_ctx_s *ctx; + + if(!self || !sdp_ro){ + TSK_DEBUG_ERROR("Invalid parameter"); + return -1; + } + if(!self->ice.ctx_audio && !self->ice.ctx_video){ + return 0; + } + + // make sure this is different SDP + if((O = (const tsdp_header_O_t*)tsdp_message_get_header(sdp_ro, tsdp_htype_O))){ + if(self->ice.last_sdp_ro_ver == (int32_t)O->sess_version){ + TSK_DEBUG_INFO("ICE: ignore processing SDP RO because version haven't changed"); + return 0; + } + self->ice.last_sdp_ro_ver = (int32_t)O->sess_version; + } + + // session level attributes + + if((A = tsdp_message_get_headerA(sdp_ro, "ice-ufrag"))){ + sess_ufrag = A->value; + } + if((A = tsdp_message_get_headerA(sdp_ro, "ice-pwd"))){ + sess_pwd = A->value; + } + +#if 0 // Use RTCWeb Profile (tmedia_profile_rtcweb) + { + const tsdp_header_S_t *S; + if((S = (const tsdp_header_S_t *)tsdp_message_get_header(sdp_ro, tsdp_htype_S)) && S->value){ + self->ice.is_jingle = tsk_strcontains(S->value, tsk_strlen(S->value), "webrtc"); + } + } +#endif + + for(i = 0; i < 2; ++i){ + if((M = tsdp_message_find_media(sdp_ro, i==0 ? "audio": "video"))){ + const char *ufrag = sess_ufrag, *pwd = sess_pwd; + tsk_bool_t remote_use_rtcpmux = (tsdp_header_M_findA(M, "rtcp-mux") != tsk_null); + ctx = (i==0 ? self->ice.ctx_audio : self->ice.ctx_video); + ice_remote_candidates = tsk_null; + index = 0; + if((A = tsdp_header_M_findA(M, "ice-ufrag"))){ + ufrag = A->value; + } + if((A = tsdp_header_M_findA(M, "ice-pwd"))){ + pwd = A->value; + } + + while((A = tsdp_header_M_findA_at(M, "candidate", index++))){ + tsk_strcat_2(&ice_remote_candidates, "%s\r\n", A->value); + } + // ICE processing will be automatically stopped if the remote candidates are not valid + // ICE-CONTROLLING role if we are the offerer + ret = tnet_ice_ctx_set_remote_candidates_2(ctx, ice_remote_candidates, ufrag, pwd, !is_remote_offer, self->ice.is_jingle, (self->use_rtcpmux && remote_use_rtcpmux)); + TSK_SAFE_FREE(ice_remote_candidates); + } + } + + return ret; +} + + +//-------------------------------------------------------- +// == STATE MACHINE BEGIN == +//-------------------------------------------------------- + + +// Current -> (oINVITE) -> Current +static int x0500_Current_2_Current_X_oINVITE(va_list *app) +{ + int ret; + tsip_dialog_invite_t *self; + const tsip_action_t* action; + const tsip_message_t *message; + tmedia_type_t media_type; + static const tsk_bool_t __force_restart_is_yes = tsk_true; + + self = va_arg(*app, tsip_dialog_invite_t *); + message = va_arg(*app, const tsip_message_t *); + action = va_arg(*app, const tsip_action_t *); + + media_type = (action && action->media.type != tmedia_none) ? action->media.type : TSIP_DIALOG_GET_SS(self)->media.type; + self->is_client = tsk_true; + tsip_dialog_invite_ice_save_action(self, _fsm_action_oINVITE, action, message); + + // Cancel without notifying ("silent mode") and perform the operation right now ("sync mode") + tsip_dialog_invite_ice_cancel_silent_and_sync_ctx(self); + + // create ICE context + if((ret = tsip_dialog_invite_ice_create_ctx(self, media_type))){ + TSK_DEBUG_ERROR("tsip_dialog_invite_ice_create_ctx() failed"); + return ret; + } + + // For now disable ICE timers until we receive the 2xx + ret = tsip_dialog_invite_ice_timers_set(self, -1); + + // Start ICE + ret = tsip_dialog_invite_ice_start_ctx(self); + + // alert the user only if we are in initial state which means that it's not media update + if(TSIP_DIALOG(self)->state == tsip_initial){ + TSIP_DIALOG_SIGNAL(self, tsip_event_code_dialog_connecting, "Dialog connecting"); + } + + return ret; +} + +// Current -> (iINVITE) -> Current +static int x0500_Current_2_Current_X_iINVITE(va_list *app) +{ + int ret; + tsip_dialog_invite_t *self; + const tsip_action_t* action; + const tsip_message_t *message; + + self = va_arg(*app, tsip_dialog_invite_t *); + message = va_arg(*app, const tsip_message_t *); + action = va_arg(*app, const tsip_action_t *); + + self->is_client = tsk_false; + ret = tsip_dialog_invite_ice_save_action(self, _fsm_action_iINVITE, action, message); + + // Cancel without notifying ("silent mode") and perform the operation right now ("sync mode") + tsip_dialog_invite_ice_cancel_silent_and_sync_ctx(self); + + // set remote candidates + if(TSIP_MESSAGE_HAS_CONTENT(message)){ + if(tsk_striequals("application/sdp", TSIP_MESSAGE_CONTENT_TYPE(message))){ + tsdp_message_t* sdp_ro; + if(!(sdp_ro = tsdp_message_parse(TSIP_MESSAGE_CONTENT_DATA(message), TSIP_MESSAGE_CONTENT_DATA_LENGTH(message)))){ + TSK_DEBUG_ERROR("Failed to parse remote sdp message"); + return -2; + } + // create ICE context + if((ret = tsip_dialog_invite_ice_create_ctx(self, tmedia_type_from_sdp(sdp_ro)))){ + TSK_DEBUG_ERROR("tsip_dialog_invite_ice_create_ctx() failed"); + return ret; + } + ret = tsip_dialog_invite_ice_process_ro(self, sdp_ro, tsk_true); + TSK_OBJECT_SAFE_FREE(sdp_ro); + } + else{ + TSK_DEBUG_ERROR("[%s] content-type is not supportted", TSIP_MESSAGE_CONTENT_TYPE(message)); + return -3; + } + } + + // For now disable ICE timers until we send the 2xx and receive the ACK + ret = tsip_dialog_invite_ice_timers_set(self, -1); + + // Start ICE + ret = tsip_dialog_invite_ice_start_ctx(self); + + return ret; +} + + + + +//++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +// == STATE MACHINE END == +//++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + +static int tsip_dialog_invite_ice_callback(const tnet_ice_event_t *e) +{ + int ret = 0; + tsip_dialog_invite_t *dialog; + + TSK_DEBUG_INFO("ICE callback: %s", e->phrase); + + dialog = tsk_object_ref(TSK_OBJECT(e->userdata)); + + // Do not lock: caller is thread safe + + switch(e->type){ + case tnet_ice_event_type_gathering_completed: + case tnet_ice_event_type_conncheck_succeed: + case tnet_ice_event_type_conncheck_failed: + case tnet_ice_event_type_cancelled: + { + if(dialog->ice.last_action_id != tsk_fsm_state_none){ + if(tsip_dialog_invite_ice_got_local_candidates(dialog)){ + ret = tsip_dialog_fsm_act(TSIP_DIALOG(dialog), dialog->ice.last_action_id, dialog->ice.last_message, dialog->ice.last_action); + dialog->ice.last_action_id = tsk_fsm_state_none; + } + } + if(dialog->ice.start_smgr){ + ret = tsip_dialog_invite_msession_start(dialog); + } + break; + } + // fatal errors which discard ICE process + case tnet_ice_event_type_gathering_host_candidates_failed: + case tnet_ice_event_type_gathering_reflexive_candidates_failed: + case tnet_ice_event_type_gathering_relay_candidates_failed: + { + if (dialog->ice.last_action_id != tsk_fsm_state_none) { + ret = tsip_dialog_fsm_act(TSIP_DIALOG(dialog), dialog->ice.last_action_id, dialog->ice.last_message, dialog->ice.last_action); + dialog->ice.last_action_id = tsk_fsm_state_none; + } + break; + } + // TURN session disconnected while we're in call + case tnet_ice_event_type_turn_connection_broken: + { + ret = tsip_dialog_fsm_act_2(TSIP_DIALOG(dialog), _fsm_action_oBYE); + break; + } + default: break; + } + + TSK_OBJECT_SAFE_FREE(dialog); + + return ret; +} + +static int tsip_dialog_invite_ice_audio_callback(const tnet_ice_event_t *e) +{ + return tsip_dialog_invite_ice_callback(e); +} + +static int tsip_dialog_invite_ice_video_callback(const tnet_ice_event_t *e) +{ + return tsip_dialog_invite_ice_callback(e); +}
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