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CURLOPT_DNS_USE_GLOBAL_CACHE: remove

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Remove the code too. The functionality has been disabled in code since
7.62.0. Setting this option will from now on simply be ignored and have
no function.

Closes #3654
This commit is contained in:
Daniel Stenberg 2019-03-07 15:39:43 +01:00
parent ebc0550110
commit f73de32d46
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GPG key ID: 5CC908FDB71E12C2
9 changed files with 35 additions and 119 deletions
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34
lib/hostip.c
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@ -114,42 +114,8 @@
* CURLRES_* defines based on the config*.h and curl_setup.h defines.
*/
/* These two symbols are for the global DNS cache */
static struct curl_hash hostname_cache;
static int host_cache_initialized;
static void freednsentry(void *freethis);
/*
* Curl_global_host_cache_init() initializes and sets up a global DNS cache.
* Global DNS cache is general badness. Do not use. This will be removed in
* a future version. Use the share interface instead!
*
* Returns a struct curl_hash pointer on success, NULL on failure.
*/
struct curl_hash *Curl_global_host_cache_init(void)
{
int rc = 0;
if(!host_cache_initialized) {
rc = Curl_hash_init(&hostname_cache, 7, Curl_hash_str,
Curl_str_key_compare, freednsentry);
if(!rc)
host_cache_initialized = 1;
}
return rc?NULL:&hostname_cache;
}
/*
* Destroy and cleanup the global DNS cache
*/
void Curl_global_host_cache_dtor(void)
{
if(host_cache_initialized) {
Curl_hash_destroy(&hostname_cache);
host_cache_initialized = 0;
}
}
/*
* Return # of addresses in a Curl_addrinfo struct
*/