Return -1 when socket_can_read times out.

0 is a valid file descriptor. Use -1 instead to signal a timeout.

diff --git a/src/fping.c b/src/fping.c
index 2a885e42260176a0c37927f48fa75a630a89447a..d4d112f00ede637c1d0691fe7f8f36adc3c069d4 100644 (file)
--- a/src/fping.c
+++ b/src/fping.c
@@ -1716,7 +1716,7 @@ select_again:
 #endif
     }
 
-    return 0;
+    return -1;
 }
 
 int receive_packet(int socket,
@@ -2005,7 +2005,7 @@ int wait_for_reply(long wait_time)
         to.tv_usec = 0;
     }
     s = socket_can_read(&to);
-    if (s == 0) {
+    if (s == -1) {
         return 0; /* timeout */
     }