CURLOPT_SOCKOPTDATA - pointer to pass to sockopt callback
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SOCKOPTDATA, void *pointer);
CURLOPT_SOCKOPTDATA(3) curl_easy_setopt options CURLOPT_SOCKOPTDATA(3) NAME CURLOPT_SOCKOPTDATA - pointer to pass to sockopt callback SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SOCKOPTDATA, void *pointer); DESCRIPTION Pass a pointer that will be untouched by libcurl and passed as the first argument in the sockopt callback set with CURLOPT_SOCKOPTFUNC- TION(3). DEFAULT The default value of this parameter is NULL. PROTOCOLS All EXAMPLE static int sockopt_callback(void *clientp, curl_socket_t curlfd, curlsocktype purpose) { int val = *(int *)clientp; setsockopt(curldfd, SOL_SOCKET, SO_RCVBUF, (const char *)&val, sizeof(val)); return CURL_SOCKOPT_OK; } curl = curl_easy_init(); if(curl) { int recvbuffersize = 256 * 1024; curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); /* call this function to set options for the socket */ curl_easy_setopt(curl, CURLOPT_SOCKOPTFUNCTION, sockopt_callback); curl_easy_setopt(curl, CURLOPT_SOCKOPTDATA, &recvbuffersize); res = curl_easy_perform(curl); curl_easy_cleanup(curl); } AVAILABILITY Added in 7.16.0 RETURN VALUE Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------+ |Availability | web/curl | +---------------+------------------+ |Stability | Uncommitted | +---------------+------------------+ SEE ALSO CURLOPT_SOCKOPTFUNCTION(3), CURLOPT_OPENSOCKETFUNCTION(3), NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://curl.se/down- load/curl-7.83.1.tar.bz2. Further information about this software can be found on the open source community website at http://curl.haxx.se/. libcurl 7.83.1 November 26, 2021 CURLOPT_SOCKOPTDATA(3)