quickjs-tart

quickjs-based runtime for wallet-core logic
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CURLOPT_DNS_LOCAL_IP4.md (1650B)

      1 ---
      2 c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
      3 SPDX-License-Identifier: curl
      4 Title: CURLOPT_DNS_LOCAL_IP4
      5 Section: 3
      6 Source: libcurl
      7 See-also:
      8   - CURLOPT_DNS_INTERFACE (3)
      9   - CURLOPT_DNS_LOCAL_IP6 (3)
     10   - CURLOPT_DNS_SERVERS (3)
     11 Protocol:
     12   - All
     13 Added-in: 7.33.0
     14 ---
     15 
     16 # NAME
     17 
     18 CURLOPT_DNS_LOCAL_IP4 - IPv4 address to bind DNS resolves to
     19 
     20 # SYNOPSIS
     21 
     22 ~~~c
     23 #include <curl/curl.h>
     24 
     25 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_LOCAL_IP4, char *address);
     26 ~~~
     27 
     28 # DESCRIPTION
     29 
     30 Set the local IPv4 *address* that the resolver should bind to. The argument
     31 should be of type char * and contain a single numerical IPv4 address as a
     32 string. Set this option to NULL to use the default setting (do not bind to a
     33 specific IP address).
     34 
     35 The application does not have to keep the string around after setting this
     36 option.
     37 
     38 Using this option multiple times makes the last set string override the
     39 previous ones. Set it to NULL to disable its use again.
     40 
     41 # DEFAULT
     42 
     43 NULL
     44 
     45 # %PROTOCOLS%
     46 
     47 # EXAMPLE
     48 
     49 ~~~c
     50 int main(void)
     51 {
     52   CURL *curl = curl_easy_init();
     53   if(curl) {
     54     CURLcode res;
     55     curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
     56     curl_easy_setopt(curl, CURLOPT_DNS_LOCAL_IP4, "192.168.0.14");
     57     res = curl_easy_perform(curl);
     58     curl_easy_cleanup(curl);
     59   }
     60 }
     61 ~~~
     62 
     63 # NOTES
     64 
     65 This option requires that libcurl was built with a resolver backend that
     66 supports this operation. The c-ares backend is the only such one.
     67 
     68 # %AVAILABILITY%
     69 
     70 # RETURN VALUE
     71 
     72 curl_easy_setopt(3) returns a CURLcode indicating success or error.
     73 
     74 CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
     75 libcurl-errors(3).