diff options
Diffstat (limited to 'lib/sockopt.c')
| -rw-r--r-- | lib/sockopt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/sockopt.c b/lib/sockopt.c index b9b9a71167..74bc034ccd 100644 --- a/lib/sockopt.c +++ b/lib/sockopt.c @@ -672,6 +672,9 @@ int sockopt_tcp_mss_get(int sock) int tcp_maxseg = 0; socklen_t tcp_maxseg_len = sizeof(tcp_maxseg); + if (sock < 0) + return 0; + ret = getsockopt(sock, IPPROTO_TCP, TCP_MAXSEG, &tcp_maxseg, &tcp_maxseg_len); if (ret != 0) { |