TCP select bug when SSL negotiation fails

robertdavidgraham · May 27, 2019 · 37be762 · 37be762
1 parent bcaba9a
commit 37be762
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/tcp.c b/tcp.c
@@ -82,6 +82,11 @@ tcp_can_receive(int sck, int millis)
     struct timeval time;
     int sel_count;
 
+    if (sck <= 0 || FD_SETSIZE <= sck) {
+        STATUS(0, "SELECT FAILURE %d\n", sck);
+        RESULT("UNKNOWN - connection terminated\n");
+        exit(1);
+    }
     time.tv_sec = millis / 1000;
     time.tv_usec = (millis * 1000) % 1000000;
     FD_ZERO(&wfds);