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-rw-r--r--ares/CHANGES7
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diff --git a/ares/CHANGES b/ares/CHANGES
index cb1fdac24..678319dad 100644
--- a/ares/CHANGES
+++ b/ares/CHANGES
@@ -4,6 +4,13 @@
- William Ahern:
+ Make UDP sockets non-blocking. I've confirmed that at least on Linux 2.4 a
+ read event can come back from poll() on a valid SOCK_DGRAM socket but
+ recv(2) will still block. This patch doesn't ignore EAGAIN in
+ read_udp_packets(), though maybe it should. (This patch was edited by Daniel
+ Stenberg and a new configure test was added (imported from curl's configure)
+ to properly detect what non-blocking socket approach to use.)
+
I'm not quite sure how this was happening, but I've been seeing PTR queries
which seem to return empty responses. At least, they were empty when calling
ares_expand_name() on the record. Here's a patch which guarantees to