CURLOPT_PREREQDATA - request callback
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PREREQDATA, void *pointer);
CURLOPT_PREREQDATA(3) curl_easy_setopt options CURLOPT_PREREQDATA(3) NAME CURLOPT_PREREQDATA - pointer passed to the pre-request callback SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PREREQDATA, void *pointer); DESCRIPTION Pass a pointer that will be untouched by libcurl and passed as the first argument in the pre-request callback set with CURLOPT_PREREQFUNC- TION(3). DEFAULT NULL PROTOCOLS All EXAMPLE static int prereq_callback(void *clientp, char *conn_primary_ip, char *conn_local_ip, int conn_primary_port, int conn_local_port) { printf("Connection made to %s:%s\n", conn_primary_ip, conn_primary_port); return CURL_PREREQFUNC_OK; } { struct data prereq_data; curl_easy_setopt(CURL *handle, CURLOPT_PREREQFUNCTION, prereq_callback); curl_easy_setopt(CURL *handle, CURLOPT_PREREQDATA, &prereq_data); } AVAILABILITY Added in 7.80.0 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_PREREQFUNCTION(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_PREREQDATA(3)