From 9d1ad9d1100b636ef777ac6a52b0066673f0f8a0 Mon Sep 17 00:00:00 2001
From: Willem Toorop <willem@nlnetlabs.nl>
Date: Wed, 15 Oct 2014 23:32:33 +0200
Subject: [PATCH] Respond correctly to non-blocking events

---
 src/stub.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/stub.c b/src/stub.c
index fed751e0..d27a8855 100644
--- a/src/stub.c
+++ b/src/stub.c
@@ -288,6 +288,9 @@ stub_resolve_read_cb(void *userarg)
 	dns_req->loop->vmt->clear(dns_req->loop, &netreq->event);
 
 	read = recvfrom(netreq->udp_fd, pkt, pkt_len, 0, NULL, NULL);
+	if (read == -1 && (errno = EAGAIN || errno == EWOULDBLOCK))
+		return;
+
 	if (read < GLDNS_HEADER_SIZE)
 		return; /* Not DNS */