[PATCH] libcli/dns: Time out requests after a while

[Kai Blin]

Time out UDP requests after DNS_REQUEST_TIMEOUT seconds. Currently set
to 2 seconds.

This should fix bug #8878.
---
 libcli/dns/dns.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/libcli/dns/dns.c b/libcli/dns/dns.c
index da65ce4..43e1c4e 100644
--- a/libcli/dns/dns.c
+++ b/libcli/dns/dns.c
@@ -38,6 +38,8 @@ struct dns_udp_request_state {
 	size_t reply_len;
 };
 
+#define DNS_REQUEST_TIMEOUT 2
+
 /* Declare callback functions used below. */
 static void dns_udp_request_get_reply(struct tevent_req *subreq);
 static void dns_udp_request_done(struct tevent_req *subreq);
@@ -92,6 +94,12 @@ struct tevent_req *dns_udp_request_send(TALLOC_CTX *mem_ctx,
 		return tevent_req_post(req, ev);
 	}
 
+	if (!tevent_req_set_endtime(req, ev,
+				timeval_current_ofs(DNS_REQUEST_TIMEOUT, 0))) {
+		return tevent_req_post(req, ev);
+	}
+
+
 	tevent_req_set_callback(subreq, dns_udp_request_get_reply, req);
 	return req;
 }
-- 
1.7.0.4