[FFmpeg-devel] [PATCH v4 09/11] avformat/whip: check the peer whether is ice lite

[Jack Lau]

See RFC 5245 Section 4.3:
If an agent is a lite implementation, it MUST include an "a=ice-lite"
session-level attribute in its SDP.  If an agent is a full
implementation, it MUST NOT include this attribute.

Signed-off-by: Jack Lau <jacklau1222 at qq.com>
---
 libavformat/whip.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/whip.c b/libavformat/whip.c
index fe35ab7205..d37a61042f 100644
--- a/libavformat/whip.c
+++ b/libavformat/whip.c
@@ -248,6 +248,7 @@ typedef struct WHIPContext {
      */
     char *sdp_offer;
 
+    int is_peer_ice_lite;
     /* The ICE username and pwd from remote server. */
     char *ice_ufrag_remote;
     char *ice_pwd_remote;
@@ -870,6 +871,8 @@ static int parse_answer(AVFormatContext *s)
 
     for (i = 0; !avio_feof(pb); i++) {
         ff_get_chomp_line(pb, line, sizeof(line));
+        if (av_strstart(line, "a=ice-lite", &ptr))
+            whip->is_peer_ice_lite = 1;
         if (av_strstart(line, "a=ice-ufrag:", &ptr) && !whip->ice_ufrag_remote) {
             whip->ice_ufrag_remote = av_strdup(ptr);
             if (!whip->ice_ufrag_remote) {
-- 
2.49.0