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Parse ICE attributes when receiving SDP.

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This commit is contained in:
Ghislain MARY 2012-07-18 15:41:58 +02:00
parent afe90f2be9
commit c93c092cf3
2 changed files with 53 additions and 2 deletions
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3
coreapi/sal.h
View file

@ -152,6 +152,9 @@ typedef struct SalMediaDescription{
SalStreamDescription streams[SAL_MEDIA_DESCRIPTION_MAX_STREAMS];
} SalMediaDescription;
#define SAL_MEDIA_DESCRIPTION_MAX_MESSAGE_ATTRIBUTES 5
#define SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES 10
SalMediaDescription *sal_media_description_new();
void sal_media_description_ref(SalMediaDescription *md);
void sal_media_description_unref(SalMediaDescription *md);

52
coreapi/sal_eXosip2_sdp.c
View file

@ -389,7 +389,10 @@ static int payload_type_fill_from_rtpmap(PayloadType *pt, const char *rtpmap){
int sdp_to_media_description(sdp_message_t *msg, SalMediaDescription *desc){
int i,j;
const char *mtype,*proto,*port,*addr,*number;
const char *ice_ufrag, *ice_pwd;
sdp_bandwidth_t *sbw=NULL;
sdp_attribute_t *attr;
int media_attribute_nb;
addr=sdp_message_c_addr_get (msg, -1, 0);
if (addr)
@ -433,7 +436,8 @@ int sdp_to_media_description(sdp_message_t *msg, SalMediaDescription *desc){
for(j=0;(sbw=sdp_message_bandwidth_get(msg,i,j))!=NULL;++j){
if (strcasecmp(sbw->b_bwtype,"AS")==0) stream->bandwidth=atoi(sbw->b_bandwidth);
}
stream->dir=_sdp_message_get_mline_dir(msg,i);
stream->dir=_sdp_message_get_mline_dir(msg,i);
media_attribute_nb = 0;
/* for each payload type */
for (j=0;((number=sdp_message_m_payload_get (msg, i,j)) != NULL); j++){
const char *rtpmap,*fmtp;
@ -442,9 +446,11 @@ int sdp_to_media_description(sdp_message_t *msg, SalMediaDescription *desc){
payload_type_set_number(pt,ptn);
/* get the rtpmap associated to this codec, if any */
rtpmap=sdp_message_a_attr_value_get_with_pt(msg, i,ptn,"rtpmap");
if (rtpmap != NULL) media_attribute_nb++;
if (payload_type_fill_from_rtpmap(pt,rtpmap)==0){
/* get the fmtp, if any */
fmtp=sdp_message_a_attr_value_get_with_pt(msg, i, ptn,"fmtp");
if (fmtp != NULL) media_attribute_nb++;
payload_type_set_send_fmtp(pt,fmtp);
stream->payloads=ms_list_append(stream->payloads,pt);
ms_message("Found payload %s/%i fmtp=%s",pt->mime_type,pt->clock_rate,
@ -455,7 +461,6 @@ int sdp_to_media_description(sdp_message_t *msg, SalMediaDescription *desc){
/* read crypto lines if any */
if (stream->proto == SalProtoRtpSavp) {
int k, valid_count = 0;
sdp_attribute_t *attr;
memset(&stream->crypto, 0, sizeof(stream->crypto));
for (k=0;valid_count < SAL_CRYPTO_ALGO_MAX && (attr=sdp_message_attribute_get(msg,i,k))!=NULL;k++){
@ -494,6 +499,49 @@ int sdp_to_media_description(sdp_message_t *msg, SalMediaDescription *desc){
}
ms_message("Found: %d valid crypto lines", valid_count);
}
/* Get ICE candidate attributes if any */
ice_ufrag = ice_pwd = NULL;
for (j = 0; (j < SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES) && ((attr = sdp_message_attribute_get(msg, i, media_attribute_nb + j)) != NULL); j++) {
if ((keywordcmp("candidate", attr->a_att_field) == 0) && (attr->a_att_value != NULL)) {
char ip[64];
char foundation[32];
char type[6];
unsigned int priority;
unsigned int componentID;
unsigned int port;
int nb;
/* Allocate the ICE check list if it has not been done yet. */
if (desc->streams[i].ice_check_list == NULL) desc->streams[i].ice_check_list = ice_check_list_new();
nb = sscanf(attr->a_att_value, "%s %u UDP %u %s %u typ %s",
foundation, &componentID, &priority, ip, &port, type);
if (nb == 6) {
ice_add_remote_candidate(desc->streams[i].ice_check_list, type, ip, port, componentID, priority, foundation);
}
} else if ((keywordcmp("ice-ufrag", attr->a_att_field) == 0) && (attr->a_att_value != NULL)) {
ice_ufrag = attr->a_att_value;
} else if ((keywordcmp("ice-pwd", attr->a_att_field) == 0) && (attr->a_att_value != NULL)) {
ice_pwd = attr->a_att_value;
}
}
if ((ice_ufrag != NULL) && (ice_pwd != NULL)) {
ice_check_list_set_remote_credentials(desc->streams[i].ice_check_list, ice_ufrag, ice_pwd);
}
if (desc->streams[i].ice_check_list) ice_dump_candidates(desc->streams[i].ice_check_list);
}
/* Get ICE remote ufrag and remote pwd */
ice_ufrag = ice_pwd = NULL;
for (i = 0; (i < SAL_MEDIA_DESCRIPTION_MAX_MESSAGE_ATTRIBUTES) && ((attr = sdp_message_attribute_get(msg, -1, i)) != NULL); i++) {
if ((keywordcmp("ice-ufrag", attr->a_att_field) == 0) && (attr->a_att_value != NULL)) {
ice_ufrag = attr->a_att_value;
} else if ((keywordcmp("ice-pwd", attr->a_att_field) == 0) && (attr->a_att_value != NULL)) {
ice_pwd = attr->a_att_value;
}
}
if ((ice_ufrag != NULL) && (ice_pwd != NULL)) {
ms_error("ufrag: %s, pwd: %s", ice_ufrag, ice_pwd);
//ice_session_set_remote_credentials(session, ice_ufrag, ice_pwd);
}
desc->nstreams=i;
return 0;