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

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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.
This commit is contained in:
Daniel Stenberg 2008-07-10 22:24:11 +00:00
parent 9b0fd007fd
commit 6b7ccde156
1 changed files with 6 additions and 0 deletions
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6
docs/libcurl/curl_easy_setopt.3
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@ -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