CURLINFO_LASTSOCKET - get the last socket used
#include <curl/curl.h> CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_LASTSOCKET, long *socket);
CURLINFO_LASTSOCKET(3) curl_easy_getinfo options CURLINFO_LASTSOCKET(3) NAME CURLINFO_LASTSOCKET - get the last socket used SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_LASTSOCKET, long *socket); DESCRIPTION Deprecated since 7.45.0. Use CURLINFO_ACTIVESOCKET(3) instead. Pass a pointer to a long to receive the last socket used by this curl session. If the socket is no longer valid, -1 is returned. When you finish working with the socket, you must call curl_easy_cleanup() as usual and let libcurl close the socket and cleanup other resources associated with the handle. This is typically used in combination with CURLOPT_CONNECT_ONLY(3). NOTE: this API is deprecated since it is not working on win64 where the SOCKET type is 64 bits large while its 'long' is 32 bits. Use the CURLINFO_ACTIVESOCKET(3) instead, if possible. PROTOCOLS All EXAMPLE CURL *curl = curl_easy_init(); if(curl) { long sockfd; /* does not work on win64! */ curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); /* Do not do the transfer - only connect to host */ curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 1L); res = curl_easy_perform(curl); /* Extract the socket from the curl handle */ res = curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, &sockfd); if(res != CURLE_OK) { printf("Error: %s\n", curl_easy_strerror(res)); return 1; } } AVAILABILITY Added in 7.15.2 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 curl_easy_getinfo(3), curl_easy_setopt(3), CURLINFO_ACTIVESOCKET(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 CURLINFO_LASTSOCKET(3)