diff options
| -rw-r--r-- | src/libmsc/sdp_msg.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/libmsc/sdp_msg.c b/src/libmsc/sdp_msg.c index dd5551769..e16b7b229 100644 --- a/src/libmsc/sdp_msg.c +++ b/src/libmsc/sdp_msg.c @@ -240,8 +240,16 @@ int sdp_msg_to_sdp_str_buf(char *dst, size_t dst_size, const struct sdp_msg *sdp { const struct sdp_audio_codec *codec; struct osmo_strbuf sb = { .buf = dst, .len = dst_size }; - const char *ip = sdp->rtp.ip[0] ? sdp->rtp.ip : "0.0.0.0"; - char ipv = osmo_ip_str_type(ip) == AF_INET6 ? '6' : '4'; + const char *ip; + char ipv; + + if (!sdp) { + OSMO_STRBUF_PRINTF(sb, "%s", ""); + return sb.chars_needed; + } + + ip = sdp->rtp.ip[0] ? sdp->rtp.ip : "0.0.0.0"; + ipv = (osmo_ip_str_type(ip) == AF_INET6) ? '6' : '4'; OSMO_STRBUF_PRINTF(sb, "v=0\r\n" |