78 lines
1.9 KiB
Markdown
78 lines
1.9 KiB
Markdown
|
---
|
||
|
|
c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
|
||
|
|
SPDX-License-Identifier: curl
|
||
|
|
Title: CURLINFO_ACTIVESOCKET
|
||
|
|
Section: 3
|
||
|
|
Source: libcurl
|
||
|
|
See-also:
|
||
|
|
- CURLINFO_LASTSOCKET (3)
|
||
|
|
- CURLOPT_CONNECT_ONLY (3)
|
||
|
|
- curl_easy_getinfo (3)
|
||
|
|
- curl_easy_setopt (3)
|
||
|
|
---
|
||
|
|
|
||
|
|
# NAME
|
||
|
|
|
||
|
|
CURLINFO_ACTIVESOCKET - get the active socket
|
||
|
|
|
||
|
|
# SYNOPSIS
|
||
|
|
|
||
|
|
~~~c
|
||
|
|
#include <curl/curl.h>
|
||
|
|
|
||
|
|
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_ACTIVESOCKET,
|
||
|
|
curl_socket_t *socket);
|
||
|
|
~~~
|
||
|
|
|
||
|
|
# DESCRIPTION
|
||
|
|
|
||
|
|
Pass a pointer to a curl_socket_t to receive the most recently active socket
|
||
|
|
used for the transfer connection by this curl session. If the socket is no
|
||
|
|
longer valid, *CURL_SOCKET_BAD* is returned. When you are finished working
|
||
|
|
with the socket, you must call curl_easy_cleanup(3) as usual on the easy
|
||
|
|
handle and let libcurl close the socket and cleanup other resources associated
|
||
|
|
with the handle. This option returns the active socket only after the transfer
|
||
|
|
is complete, and is typically used in combination with
|
||
|
|
CURLOPT_CONNECT_ONLY(3), which skips the transfer phase.
|
||
|
|
|
||
|
|
CURLINFO_ACTIVESOCKET(3) was added as a replacement for
|
||
|
|
CURLINFO_LASTSOCKET(3) since that one is not working on all platforms.
|
||
|
|
|
||
|
|
# PROTOCOLS
|
||
|
|
|
||
|
|
All
|
||
|
|
|
||
|
|
# EXAMPLE
|
||
|
|
|
||
|
|
~~~c
|
||
|
|
int main(void)
|
||
|
|
{
|
||
|
|
CURL *curl = curl_easy_init();
|
||
|
|
if(curl) {
|
||
|
|
CURLcode res;
|
||
|
|
curl_socket_t sockfd;
|
||
|
|
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_ACTIVESOCKET, &sockfd);
|
||
|
|
|
||
|
|
if(res != CURLE_OK) {
|
||
|
|
printf("Error: %s\n", curl_easy_strerror(res));
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
~~~
|
||
|
|
|
||
|
|
# AVAILABILITY
|
||
|
|
|
||
|
|
Added in 7.45.0
|
||
|
|
|
||
|
|
# RETURN VALUE
|
||
|
|
|
||
|
|
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
|