From 00142d8443325a0ea48befc6c0347a065a67f1e0 Mon Sep 17 00:00:00 2001
From: Dan Fandrich <dan@coneharvesters.com>
Date: Fri, 28 Nov 2008 22:07:40 +0000
Subject: Only set TCP_NODELAY when it exists

---
 ares/ares_process.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ares/ares_process.c b/ares/ares_process.c
index 05341aa64..58f072595 100644
--- a/ares/ares_process.c
+++ b/ares/ares_process.c
@@ -897,6 +897,7 @@ static int open_tcp_socket(ares_channel channel, struct server_state *server)
        return -1;
     }
 
+#ifdef TCP_NODELAY
   /*
    * Disable the Nagle algorithm (only relevant for TCP sockets, and thus not in
    * configure_socket). In general, in DNS lookups we're pretty much interested
@@ -910,6 +911,7 @@ static int open_tcp_socket(ares_channel channel, struct server_state *server)
        closesocket(s);
        return -1;
     }
+#endif
 
   /* Connect to the server. */
   memset(&sockin, 0, sizeof(sockin));
-- 
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