From e2b6a45cfa5a3c8dd9d7747809b562e5b66e7f14 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Wed, 18 Feb 2004 07:56:18 +0000
Subject: Make sure dns cache timeout -1 really means forever, as it is
 documented to be. Simply skip the pruning.

---
 lib/hostip.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/hostip.c b/lib/hostip.c
index 2e9d530dd..05e6e8c34 100644
--- a/lib/hostip.c
+++ b/lib/hostip.c
@@ -200,6 +200,11 @@ hostcache_prune(curl_hash *hostcache, int cache_timeout, int now)
 void Curl_hostcache_prune(struct SessionHandle *data)
 {
   time_t now;
+
+  if(data->set.dns_cache_timeout == -1)
+    /* cache forever means never prune! */
+    return;
+
   if(data->share)
     Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE);
 
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