Earlier, if the server didn't indicate a ttl, we explicitly set 0
as ttl, making the written packets not to be sent at all (after
making the ttl actually be set for read-write url contexts).
---
libavformat/rtsp.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index dd79407..9df88b3 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -1350,7 +1350,7 @@ int ff_rtsp_make_setup_request(AVFormatContext *s, const
char *host, int port,
break;
}
case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
- char url[1024], namebuf[50];
+ char url[1024], namebuf[50], optbuf[20] = "";
struct sockaddr_storage addr;
int port, ttl;
@@ -1363,10 +1363,12 @@ int ff_rtsp_make_setup_request(AVFormatContext *s,
const char *host, int port,
port = rtsp_st->sdp_port;
ttl = rtsp_st->sdp_ttl;
}
+ if (ttl > 0)
+ snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
getnameinfo((struct sockaddr*) &addr, sizeof(addr),
namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
- port, "?ttl=%d", ttl);
+ port, "%s", optbuf);
if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
&s->interrupt_callback, NULL) < 0) {
err = AVERROR_INVALIDDATA;
--
1.7.3.1
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