/* ======================== 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;
}
// 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;
}
// Started -> (iINVITE) -> Started
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);
// 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;
}
}
// Start ICE
ret = tsip_dialog_invite_ice_start_ctx(self);
return ret;
}