curl_multi_setopt(3) on macos

Usage

#include <curl/curl.h>
CURLMcode curl_multi_setopt(CURLM *multi_handle, CURLMoption option, parameter);

Overview

curl_multi_setopt(3) is used to tell a libcurl multi handle how to behave. By using the appropriate options to curl_multi_setopt(3), you can change libcurl's behavior when using that multi handle. All options are set with the option followed by the parameter. That parameter can be a long, a function pointer, an object pointer or a curl_off_t type, depending on what the specific option expects. Read this manual carefully as bad input values may cause libcurl to behave badly. You can only set one option in each function call.

Options

`CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE`	See CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE(3)
`CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE`	See CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE(3)
`CURLMOPT_MAX_HOST_CONNECTIONS`	See CURLMOPT_MAX_HOST_CONNECTIONS(3)
`CURLMOPT_MAX_PIPELINE_LENGTH`	See CURLMOPT_MAX_PIPELINE_LENGTH(3)
`CURLMOPT_MAX_TOTAL_CONNECTIONS`	See CURLMOPT_MAX_TOTAL_CONNECTIONS(3)
`CURLMOPT_MAXCONNECTS`	See CURLMOPT_MAXCONNECTS(3)
`CURLMOPT_PIPELINING`	See CURLMOPT_PIPELINING(3)
`CURLMOPT_PIPELINING_SITE_BL`	See CURLMOPT_PIPELINING_SITE_BL(3)
`CURLMOPT_PIPELINING_SERVER_BL`	See CURLMOPT_PIPELINING_SERVER_BL(3)
`CURLMOPT_PUSHFUNCTION`	See CURLMOPT_PUSHFUNCTION(3)
`CURLMOPT_PUSHDATA`	See CURLMOPT_PUSHDATA(3)
`CURLMOPT_SOCKETFUNCTION`	See CURLMOPT_SOCKETFUNCTION(3)
`CURLMOPT_SOCKETDATA`	See CURLMOPT_SOCKETDATA(3)
`CURLMOPT_TIMERFUNCTION`	See CURLMOPT_TIMERFUNCTION(3)
`CURLMOPT_TIMERDATA`	See CURLMOPT_TIMERDATA(3)
`CURLMOPT_MAX_CONCURRENT_STREAMS`	See CURLMOPT_MAX_CONCURRENT_STREAMS(3)

Examples

#define MAX_PARALLEL 45
int main(void)
{
  CURLM *multi;
  /* Limit the amount of simultaneous connections curl should allow: */
  curl_multi_setopt(multi, CURLMOPT_MAXCONNECTS, (long)MAX_PARALLEL);
}

Return value

The standard CURLMcode for multi interface error codes. Note that it returns a CURLM_UNKNOWN_OPTION if you try setting an option that this version of libcurl does not know of.

Releases

115 releases since Mac OS X 10.5; the text changed 20 times.

curl_multi_setopt(3) set options for a curl multi handle CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE(3) chunk length threshold for pipelining CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE(3) size threshold for pipelining penalty CURLMOPT_MAX_HOST_CONNECTIONS(3) max number of connections to a single host CURLMOPT_MAX_PIPELINE_LENGTH(3) maximum number of requests in a pipeline CURLMOPT_MAX_TOTAL_CONNECTIONS(3) max simultaneously open connections CURLMOPT_MAXCONNECTS(3) size of connection cache CURLMOPT_PIPELINING(3) enable HTTP multiplexing CURLMOPT_PIPELINING_SITE_BL(3) pipelining host block list CURLMOPT_PIPELINING_SERVER_BL(3) pipelining server block list CURLMOPT_PUSHFUNCTION(3) callback that approves or denies server pushes CURLMOPT_PUSHDATA(3) pointer to pass to push callback CURLMOPT_SOCKETFUNCTION(3) callback informed about what to wait for CURLMOPT_SOCKETDATA(3) custom pointer passed to the socket callback CURLMOPT_TIMERFUNCTION(3) callback to receive timeout values CURLMOPT_TIMERDATA(3) custom pointer to pass to timer callback CURLMOPT_MAX_CONCURRENT_STREAMS(3) max concurrent streams for http2

Referred to by

libcurl-multi(3) how to use the multi interface curl_easy_setopt(3) set options for a curl easy handle CURLMOPT_PUSHDATA(3) pointer to pass to push callback curl_multi_assign(3) set data to associate with an internal socket curl_multi_socket(3) read/write available data CURLMOPT_TIMERDATA(3) custom pointer to pass to timer callback curl_multi_timeout(3) how long to wait for action before proceeding CURLMOPT_PIPELINING(3) enable HTTP multiplexing CURLOPT_MAXCONNECTS(3) maximum connection cache size CURLMOPT_MAXCONNECTS(3) size of connection cache CURLMOPT_PUSHFUNCTION(3) callback that approves or denies server pushes curl_multi_add_handle(3) add an easy handle to a multi session curl_multi_socket_all(3) reads/writes available data for all easy handles CURLMOPT_TIMERFUNCTION(3) callback to receive timeout values curl_multi_socket_action(3) read/write available data given an action CURLMOPT_PIPELINING_SITE_BL(3) pipelining host block list CURLMOPT_MAX_PIPELINE_LENGTH(3) maximum number of requests in a pipeline CURLMOPT_MAX_HOST_CONNECTIONS(3) max number of connections to a single host CURLMOPT_PIPELINING_SERVER_BL(3) pipelining server block list CURLMOPT_MAX_TOTAL_CONNECTIONS(3) max simultaneously open connections CURLMOPT_MAX_CONCURRENT_STREAMS(3) max concurrent streams for http2 CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE(3) chunk length threshold for pipelining CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE(3) size threshold for pipelining penalty CURLMOPT_QUICK_EXIT(3) allow libcurl to exit quickly CURLMOPT_NETWORK_CHANGED(3) signal network changed CURLMOPT_RESOLVE_THREADS_MAX(3) max threads for threaded DNS resolver