From cb284c7a62ff57eb5d05eed8da300c3b3b8961b8 Mon Sep 17 00:00:00 2001
From: Willy Tarreau <w@1wt.eu>
Date: Tue, 7 Jun 2022 12:06:04 +0200
Subject: [PATCH] DEV: tcploop: permit port 0 to ease handling of default
 options

This will also be convenient when binding to an IP and no port.
---
 dev/tcploop/tcploop.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dev/tcploop/tcploop.c b/dev/tcploop/tcploop.c
index ca984f79f..1aebb881e 100644
--- a/dev/tcploop/tcploop.c
+++ b/dev/tcploop/tcploop.c
@@ -248,7 +248,7 @@ int addr_to_ss(const char *str, struct sockaddr_storage *ss, struct err_msg *err
 	 */
 	if ((port_str = strrchr(str, ':')) == NULL) {
 		port = atoi(str);
-		if (port <= 0 || port > 65535) {
+		if (port < 0 || port > 65535) {
 			err->len = snprintf(err->msg, err->size, "Missing/invalid port number: '%s'\n", str);
 			return -1;
 		}