curl_multi_setopt(3) libcurl Manual curl_multi_setopt(3)NAMEcurl_multi_setopt - set options for a curl multi handle
SYNOPSIS
#include <curl/curl.h>
CURLMcode curl_multi_setopt(CURLM * multi_handle, CURLMoption option,
param);
DESCRIPTIONcurl_multi_setopt() is used to tell a libcurl multi handle how to
behave. By using the appropriate options to curl_multi_setopt, you can
change libcurl's behaviour when using that multi handle. All options
are set with the option followed by the parameter param. 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_SOCKETFUNCTION
Pass a pointer to a function matching the curl_socket_callback
prototype. The curl_multi_socket(3) functions inform the appli‐
cation about updates in the socket (file descriptor) status by
doing none, one or multiple calls to the curl_socket_callback
given in the param argument. They update the status with changes
since the previous time a curl_multi_socket(3) function was
called. If the given callback pointer is NULL, no callback will
be called. Set the callback's userp argument with CURLMOPT_SOCK‐
ETDATA. See curl_multi_socket(3) for more callback details.
CURLMOPT_SOCKETDATA
Pass a pointer to whatever you want passed to the
curl_socket_callback's forth argument, the userp pointer. This
is not used by libcurl but only passed-thru as-is. Set the call‐
back pointer with CURLMOPT_SOCKETFUNCTION.
RETURNS
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 doesn't know of.
AVAILABILITY
This function was added in libcurl 7.15.4.
SEE ALSOcurl_multi_cleanup(3), curl_multi_init(3), curl_multi_socket(3),
curl_multi_info_read(3)libcurl 7.16.0 8 Jan 2006 curl_multi_setopt(3)
