65 lines
1.4 KiB
Markdown
65 lines
1.4 KiB
Markdown
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---
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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: CURLMOPT_MAX_PIPELINE_LENGTH
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Section: 3
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Source: libcurl
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See-also:
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- CURLMOPT_MAX_HOST_CONNECTIONS (3)
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- CURLMOPT_PIPELINING (3)
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---
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# NAME
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CURLMOPT_MAX_PIPELINE_LENGTH - maximum number of requests in a pipeline
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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 *handle, CURLMOPT_MAX_PIPELINE_LENGTH,
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long max);
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~~~
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# DESCRIPTION
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No function since pipelining was removed in 7.62.0.
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Pass a long. The set **max** number is used as the maximum amount of
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outstanding requests in an HTTP/1.1 pipeline. This option is only used for
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HTTP/1.1 pipelining, not for HTTP/2 multiplexing.
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When this limit is reached, libcurl creates another connection to the same
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host (see CURLMOPT_MAX_HOST_CONNECTIONS(3)), or queue the request until one
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of the pipelines to the host is ready to accept a request. Thus, the total
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number of requests in-flight is CURLMOPT_MAX_HOST_CONNECTIONS(3) *
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CURLMOPT_MAX_PIPELINE_LENGTH(3).
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# DEFAULT
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5
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# PROTOCOLS
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HTTP(S)
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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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CURLM *m = curl_multi_init();
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/* set a more conservative pipe length */
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curl_multi_setopt(m, CURLMOPT_MAX_PIPELINE_LENGTH, 3L);
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}
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~~~
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# AVAILABILITY
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Added in 7.30.0
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# RETURN VALUE
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Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.
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