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 If the socket is no longer valid, -1 is returned.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)