static void initiate_outgoing(const SalStreamDescription *local_offer,
const SalStreamDescription *remote_answer,
SalStreamDescription *result) {
if (remote_answer->rtp_port!=0)
result->payloads=match_payloads(local_offer->payloads,remote_answer->payloads,TRUE,FALSE);
result->proto=remote_answer->proto;
result->type=local_offer->type;
result->dir=compute_dir_outgoing(local_offer->dir,remote_answer->dir);
if (result->payloads && !only_telephone_event(result->payloads)) {
strcpy(result->rtp_addr,remote_answer->rtp_addr);
strcpy(result->rtcp_addr,remote_answer->rtcp_addr);
result->rtp_port=remote_answer->rtp_port;
result->rtcp_port=remote_answer->rtcp_port;
result->bandwidth=remote_answer->bandwidth;
result->ptime=remote_answer->ptime;
} else {
result->rtp_port=0;
}
if (sal_stream_description_has_srtp(result) == TRUE) {
/* verify crypto algo */
memset(result->crypto, 0, sizeof(result->crypto));
if (!match_crypto_algo(local_offer->crypto, remote_answer->crypto, &result->crypto[0], &result->crypto_local_tag, FALSE))
result->rtp_port = 0;
}
}
static void initiate_outgoing(const SalStreamDescription *local_offer,
const SalStreamDescription *remote_answer,
SalStreamDescription *result) {
if (remote_answer->port!=0)
result->payloads=match_payloads(local_offer->payloads,remote_answer->payloads,TRUE,FALSE);
result->proto=local_offer->proto;
result->type=local_offer->type;
result->dir=compute_dir_outgoing(local_offer->dir,remote_answer->dir);
if (result->payloads && !only_telephone_event(result->payloads)) {
strcpy(result->addr,remote_answer->addr);
result->port=remote_answer->port;
result->bandwidth=remote_answer->bandwidth;
result->ptime=remote_answer->ptime;
} else {
result->port=0;
}
}
static void initiate_outgoing(MSFactory* factory, const SalStreamDescription *local_offer,
const SalStreamDescription *remote_answer,
SalStreamDescription *result){
if (remote_answer->rtp_port!=0)
result->payloads=match_payloads(factory, local_offer->payloads,remote_answer->payloads,TRUE,FALSE);
else {
ms_message("Local stream description [%p] rejected by peer",local_offer);
result->rtp_port=0;
return;
}
result->proto=remote_answer->proto;
result->type=local_offer->type;
if (local_offer->rtp_addr[0]!='\0' && ms_is_multicast(local_offer->rtp_addr)) {
/*6.2 Multicast Streams
...
If a multicast stream is accepted, the address and port information
in the answer MUST match that of the offer. Similarly, the
directionality information in the answer (sendonly, recvonly, or
sendrecv) MUST equal that of the offer. This is because all
participants in a multicast session need to have equivalent views of
the parameters of the session, an underlying assumption of the
multicast bias of RFC 2327.*/
if (strcmp(local_offer->rtp_addr,remote_answer->rtp_addr) !=0 ) {
ms_message("Remote answered IP [%s] does not match offered [%s] for local stream description [%p]"
,remote_answer->rtp_addr
,local_offer->rtp_addr
,local_offer);
result->rtp_port=0;
return;
}
if (local_offer->rtp_port!=remote_answer->rtp_port) {
ms_message("Remote answered rtp port [%i] does not match offered [%i] for local stream description [%p]"
,remote_answer->rtp_port
,local_offer->rtp_port
,local_offer);
result->rtp_port=0;
return;
}
if (local_offer->dir!=remote_answer->dir) {
ms_message("Remote answered dir [%s] does not match offered [%s] for local stream description [%p]"
,sal_stream_dir_to_string(remote_answer->dir)
,sal_stream_dir_to_string(local_offer->dir)
,local_offer);
result->rtp_port=0;
return;
}
if (local_offer->bandwidth!=remote_answer->bandwidth) {
ms_message("Remote answered bandwidth [%i] does not match offered [%i] for local stream description [%p]"
,remote_answer->bandwidth
,local_offer->bandwidth
,local_offer);
result->rtp_port=0;
return;
}
if (local_offer->ptime > 0 && local_offer->ptime!=remote_answer->ptime) {
ms_message("Remote answered ptime [%i] does not match offered [%i] for local stream description [%p]"
,remote_answer->ptime
,local_offer->ptime
,local_offer);
result->rtp_port=0;
return;
}
if (local_offer->ttl > 0 && local_offer->ttl!=remote_answer->ttl) {
ms_message("Remote answered ttl [%i] does not match offered [%i] for local stream description [%p]"
,remote_answer->ttl
,local_offer->ttl
,local_offer);
result->rtp_port=0;
return;
}
result->ttl=local_offer->ttl;
result->dir=local_offer->dir;
result->multicast_role = SalMulticastSender;
} else {
result->dir=compute_dir_outgoing(local_offer->dir,remote_answer->dir);
}
if (result->payloads && !only_telephone_event(result->payloads)){
strcpy(result->rtp_addr,remote_answer->rtp_addr);
strcpy(result->rtcp_addr,remote_answer->rtcp_addr);
result->rtp_port=remote_answer->rtp_port;
result->rtcp_port=remote_answer->rtcp_port;
result->bandwidth=remote_answer->bandwidth;
result->ptime=remote_answer->ptime;
}else{
result->rtp_port=0;
}
if (sal_stream_description_has_srtp(result) == TRUE) {
/* verify crypto algo */
memset(result->crypto, 0, sizeof(result->crypto));
if (!match_crypto_algo(local_offer->crypto, remote_answer->crypto, &result->crypto[0], &result->crypto_local_tag, FALSE))
result->rtp_port = 0;
}
result->rtp_ssrc=local_offer->rtp_ssrc;
strncpy(result->rtcp_cname,local_offer->rtcp_cname,sizeof(result->rtcp_cname));
// Handle dtls session attribute: if both local and remote have a dtls fingerprint and a dtls setup, get the remote fingerprint into the result
if ((local_offer->dtls_role!=SalDtlsRoleInvalid) && (remote_answer->dtls_role!=SalDtlsRoleInvalid)
&&(strlen(local_offer->dtls_fingerprint)>0) && (strlen(remote_answer->dtls_fingerprint)>0)) {
strncpy(result->dtls_fingerprint, remote_answer->dtls_fingerprint,sizeof(result->dtls_fingerprint));
if (remote_answer->dtls_role==SalDtlsRoleIsClient) {
result->dtls_role = SalDtlsRoleIsServer;
} else {
result->dtls_role = SalDtlsRoleIsClient;
}
} else {
result->dtls_fingerprint[0] = '\0';
result->dtls_role = SalDtlsRoleInvalid;
}
result->rtcp_mux = remote_answer->rtcp_mux && local_offer->rtcp_mux;
result->implicit_rtcp_fb = local_offer->implicit_rtcp_fb && remote_answer->implicit_rtcp_fb;
}
