From: Baptiste Assmann <bassmann@haproxy.com>
Date: Fri, 18 Aug 2017 21:36:07 +0000 (+0200)
Subject: MINOR: dns: make SRV record processing more verbose
X-Git-Tag: v1.8-dev3~162
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e2d03d2a43473a637491c0a8c9e10d5caed8e63b;p=thirdparty%2Fhaproxy.git

MINOR: dns: make SRV record processing more verbose

For troubleshooting purpose, it may be important to know when a server
got its fqdn updated by a SRV record.
This patch makes HAProxy to report such events through stderr and logs.
---

diff --git a/src/dns.c b/src/dns.c
index 52e02026ff..bc463ee630 100644
--- a/src/dns.c
+++ b/src/dns.c
@@ -615,13 +615,16 @@ void dns_resolve_recv(struct dgram_conn *dgram)
 						}
 						if (srv) {
 							char weight[9];
-
+							const char *msg = NULL;
 							char hostname[DNS_MAX_NAME_SIZE];
 
 							if (item1->data_len > DNS_MAX_NAME_SIZE)
 								continue;
 							dns_dn_label_to_str(item1->target, hostname, item1->data_len);
-							update_server_fqdn(srv, hostname, "SRV record");
+							msg = update_server_fqdn(srv, hostname, "SRV record");
+							if (msg)
+								send_log(srv->proxy, LOG_NOTICE, "%s", msg);
+
 							srv->svc_port = item1->port;
 							srv->flags &= ~SRV_F_MAPPORTS;
 							if ((srv->check.state & CHK_ST_CONFIGURED) && !(srv->flags & SRV_F_CHECKPORT))