Improve BIO_socket_wait(), BIO_wait(), BIO_connect_retry(), and their docs

[openssl.git] / crypto / bio / b_sock.c

diff --git a/crypto/bio/b_sock.c b/crypto/bio/b_sock.c
index f5d2a627cb5b084f3685e63a0e2b5b2bd8115925..79f7743b2f5d6a14186f4648d3ffafa5b15f5342 100644 (file)
--- a/crypto/bio/b_sock.c
+++ b/crypto/bio/b_sock.c
@@ -387,6 +387,8 @@ int BIO_socket_wait(int fd, int for_read, time_t max_time)
     struct timeval tv;
     time_t now;
 
+    if (fd < 0 || fd >= FD_SETSIZE)
+        return -1;
     if (max_time == 0)
         return 1;