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55c045c863
New multi option CURLMOPT_NETWORK_CHANGED with a long bitmask value: - CURLM_NWCOPT_CLEAR_CONNS: do not reuse existing connections, close all idle connections. - CURLM_NWCOPT_CLEAR_DNS: clear the multi's DNS cache. All other bits reserved for future extensions. Fixes #17225 Reported-by: ウさん Closes #17613
71 lines
1.5 KiB
Markdown
71 lines
1.5 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_FRESH_CONNECT
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Section: 3
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Source: libcurl
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Protocol:
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- All
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See-also:
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- CURLOPT_FORBID_REUSE (3)
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- CURLOPT_MAXAGE_CONN (3)
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- CURLOPT_MAXLIFETIME_CONN (3)
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- CURLMOPT_NETWORK_CHANGED (3)
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Added-in: 7.7
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---
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# NAME
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CURLOPT_FRESH_CONNECT - force a new connection to be used
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FRESH_CONNECT, long fresh);
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~~~
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# DESCRIPTION
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Pass a long. Set to 1 to make the next transfer use a new (fresh) connection
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by force instead of trying to reuse an existing one. This option should be
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used with caution and only if you understand what it does as it may impact
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performance negatively.
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Related functionality is CURLOPT_FORBID_REUSE(3) which makes sure the
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connection is closed after use so that it cannot be reused.
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Set *fresh* to 0 to have libcurl attempt reusing an existing connection
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(default behavior).
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# DEFAULT
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0
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# %PROTOCOLS%
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
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curl_easy_setopt(curl, CURLOPT_FRESH_CONNECT, 1L);
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/* this transfer must use a new connection, not reuse an existing */
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curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# %AVAILABILITY%
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# RETURN VALUE
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curl_easy_setopt(3) returns a CURLcode indicating success or error.
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CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
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libcurl-errors(3).
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