curl_multi_setopt(3)

NAME
curl_multi_setopt - set options for a curl multi handle

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

DESCRIPTION
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)

PROTOCOLS
All

EXAMPLE
#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);
}

AVAILABILITY
Added in 7.15.4

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.

SEE ALSO
curl_multi_cleanup(3), curl_multi_info_read(3), curl_multi_init(3), curl_multi_socket(3)