Bail out if our recvfrom fails due to alarm or error -- client side resends requests so no need to retry in server

1 files changed, 7 insertions, 0 deletions

diff --git a/btimed.c b/btimed.c
index 0a3b609..ee758d6 100644
--- a/btimed.c
+++ b/btimed.c
@@ -45,6 +45,13 @@ main(int argc, char **argv)
 		nbytes = recvfrom(sd, &inmsg, BTIME_MSGLEN, MSG_WAITALL, 
 		         (struct sockaddr *)&cli_addr, &cli_addr_len);
 
+		if (nbytes < 0) {		
+			/* Bail, we may have had an alarm(), or other error.
+			 * client side resends request, no need to retry here.
+			 */
+			exit(0);
+		}
+
 		sendto(sd, &outmsg, BTIME_MSGLEN, MSG_DONTWAIT, 
 		       (struct sockaddr *)&cli_addr, cli_addr_len);
 		/* We want to exit after 30 seconds of inactivity */