Merge pull request #5209 from brong/backend-nobogus

backend: don't even try to connect if port == "0"
cyrusimap · Jan 15, 2025 · ad34908 · ad34908
2 parents 75bb809 + 9fb4709
commit ad34908
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/imap/backend.c b/imap/backend.c
@@ -1057,6 +1057,9 @@ EXPORTED struct backend *backend_connect(struct backend *ret_backend, const char
             }
         }
 
+        // don't do lookups if the port number is zero
+        if (!strcmp(service, "0")) goto error;
+
         memset(&hints, 0, sizeof(hints));
         hints.ai_family = PF_UNSPEC;
         hints.ai_socktype = SOCK_STREAM;