126 lines
2.5 KiB
Markdown
126 lines
2.5 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_multi_setopt
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Section: 3
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Source: libcurl
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See-also:
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- curl_multi_cleanup (3)
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- curl_multi_info_read (3)
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- curl_multi_init (3)
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- curl_multi_socket (3)
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---
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# NAME
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curl_multi_setopt - set options for a curl multi handle
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLMcode curl_multi_setopt(CURLM *multi_handle, CURLMoption option, parameter);
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~~~
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# DESCRIPTION
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curl_multi_setopt(3) is used to tell a libcurl multi handle how to
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behave. By using the appropriate options to curl_multi_setopt(3), you
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can change libcurl's behavior when using that multi handle. All options are
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set with the *option* followed by the *parameter*. That parameter can
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be a **long**, a **function pointer**, an **object pointer** or a
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**curl_off_t** type, depending on what the specific option expects. Read
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this manual carefully as bad input values may cause libcurl to behave
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badly. You can only set one option in each function call.
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# OPTIONS
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## CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE
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See CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE(3)
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## CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE
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See CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE(3)
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## CURLMOPT_MAX_HOST_CONNECTIONS
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See CURLMOPT_MAX_HOST_CONNECTIONS(3)
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## CURLMOPT_MAX_PIPELINE_LENGTH
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See CURLMOPT_MAX_PIPELINE_LENGTH(3)
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## CURLMOPT_MAX_TOTAL_CONNECTIONS
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See CURLMOPT_MAX_TOTAL_CONNECTIONS(3)
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## CURLMOPT_MAXCONNECTS
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See CURLMOPT_MAXCONNECTS(3)
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## CURLMOPT_PIPELINING
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See CURLMOPT_PIPELINING(3)
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## CURLMOPT_PIPELINING_SITE_BL
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See CURLMOPT_PIPELINING_SITE_BL(3)
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## CURLMOPT_PIPELINING_SERVER_BL
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See CURLMOPT_PIPELINING_SERVER_BL(3)
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## CURLMOPT_PUSHFUNCTION
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See CURLMOPT_PUSHFUNCTION(3)
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## CURLMOPT_PUSHDATA
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See CURLMOPT_PUSHDATA(3)
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## CURLMOPT_SOCKETFUNCTION
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See CURLMOPT_SOCKETFUNCTION(3)
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## CURLMOPT_SOCKETDATA
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See CURLMOPT_SOCKETDATA(3)
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## CURLMOPT_TIMERFUNCTION
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See CURLMOPT_TIMERFUNCTION(3)
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## CURLMOPT_TIMERDATA
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See CURLMOPT_TIMERDATA(3)
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## CURLMOPT_MAX_CONCURRENT_STREAMS
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See CURLMOPT_MAX_CONCURRENT_STREAMS(3)
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# EXAMPLE
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~~~c
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#define MAX_PARALLEL 45
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int main(void)
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{
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CURLM *multi;
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/* Limit the amount of simultaneous connections curl should allow: */
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curl_multi_setopt(multi, CURLMOPT_MAXCONNECTS, (long)MAX_PARALLEL);
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}
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~~~
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# AVAILABILITY
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Added in 7.15.4
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# RETURN VALUE
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The standard CURLMcode for multi interface error codes. Note that it returns a
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CURLM_UNKNOWN_OPTION if you try setting an option that this version of libcurl
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does not know of.
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