Commit 6b7ccde1 authored by Daniel Stenberg's avatar Daniel Stenberg
Browse files

(Added in the section for CURLOPT_DNS_CACHE_TIMEOUT, pointed out on the 

curl-library list on July 9th 2008 by Mathew Hounsell)

NOTE: the name resolve functions of various libc implementations don't re-read
name server information unless explicitly told so (by for example calling
Ires_init(3). This may cause libcurl to keep using the older server even
if DHCP has updated the server info, and this may look like a DNS cache issue
to the casual libcurl-app user.
parent 9b0fd007

docs/libcurl/curl_easy_setopt.3

+6 −0
Original line number Diff line number Diff line
@@ -505,6 +505,12 @@ Pass a long, this sets the timeout in seconds. Name resolves will be kept in 
memory for this number of seconds. Set to zero (0) to completely disable

caching, or set to -1 to make the cached entries remain forever. By default,

libcurl caches this info for 60 seconds.



NOTE: the name resolve functions of various libc implementations don't re-read

name server information unless explicitly told so (by for example calling

\fIres_init(3)\fP. This may cause libcurl to keep using the older server even

if DHCP has updated the server info, and this may look like a DNS cache issue

to the casual libcurl-app user.

.IP CURLOPT_DNS_USE_GLOBAL_CACHE

Pass a long. If the value is non-zero, it tells curl to use a global DNS cache

that will survive between easy handle creations and deletions. This is not