avformat/librtmp: check return value of setsockopt

Fixes CID 1396837

avformat/librtmp: check return value of setsockopt
Fixes CID 1396837
4b2a2969 · Timo Rothenpieler · 0fbc9bbb · 4b2a2969
Commit 4b2a2969 authored Jun 11, 2017 by Timo Rothenpieler
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librtmp.c libavformat/librtmp.c +4 -1

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--- a/libavformat/librtmp.c
+++ b/libavformat/librtmp.c
@@ -239,7 +239,10 @@ static int rtmp_open(URLContext *s, const char *uri, int flags)
 #if CONFIG_NETWORK
    if (ctx->buffer_size >= 0 && (flags & AVIO_FLAG_WRITE)) {
        int tmp = ctx->buffer_size;
-        setsockopt(r->m_sb.sb_socket, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp));
+        if (setsockopt(r->m_sb.sb_socket, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp))) {
+            rc = AVERROR_EXTERNAL;
+            goto fail;
+        }
    }
 #endif