eefcc1bda4
curldown is this new file format for libcurl man pages. It is markdown inspired with differences: - Each file has a set of leading headers with meta-data - Supports a small subset of markdown - Uses .md file extensions for editors/IDE/GitHub to treat them nicely - Generates man pages very similar to the previous ones - Generates man pages that still convert nicely to HTML on the website - Detects and highlights mentions of curl symbols automatically (when their man page section is specified) tools: - cd2nroff: converts from curldown to nroff man page - nroff2cd: convert an (old) nroff man page to curldown - cdall: convert many nroff pages to curldown versions - cd2cd: verifies and updates a curldown to latest curldown This setup generates .3 versions of all the curldown versions at build time. CI: Since the documentation is now technically markdown in the eyes of many things, the CI runs many more tests and checks on this documentation, including proselint, link checkers and tests that make sure we capitalize the first letter after a period... Closes #12730
73 lines
1.8 KiB
Markdown
73 lines
1.8 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
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SPDX-License-Identifier: curl
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Title: curl_easy_duphandle
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Section: 3
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Source: libcurl
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See-also:
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- curl_easy_cleanup (3)
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- curl_easy_init (3)
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- curl_easy_reset (3)
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- curl_global_init (3)
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---
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# NAME
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curl_easy_duphandle - Clone a libcurl session handle
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURL *curl_easy_duphandle(CURL *handle);
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~~~
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# DESCRIPTION
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This function returns a new curl handle, a duplicate, using all the options
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previously set in the input curl *handle*. Both handles can subsequently be
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used independently and they must both be freed with curl_easy_cleanup(3).
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Any options that the input handle has been told to point to (as opposed to
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copy) with previous calls to curl_easy_setopt(3), are pointed to by the new
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handle as well. You must therefore make sure to keep the data around until
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both handles have been cleaned up.
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The new handle does **not** inherit any state information, no connections, no
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SSL sessions and no cookies. It also does not inherit any share object states
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or options (created as if CURLOPT_SHARE(3) was set to NULL).
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If the source handle has HSTS or alt-svc enabled, the duplicate gets data read
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data from the main file name to populate the cache.
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In multi-threaded programs, this function must be called in a synchronous way,
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the input handle may not be in use when cloned.
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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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CURLcode res;
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CURL *nother;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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nother = curl_easy_duphandle(curl);
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res = curl_easy_perform(nother);
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curl_easy_cleanup(nother);
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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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Added in 7.9
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# RETURN VALUE
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If this function returns NULL, something went wrong and no valid handle was
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returned.
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