71 lines
1.3 KiB
Markdown
71 lines
1.3 KiB
Markdown
|
---
|
||
|
|
c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
|
||
|
|
SPDX-License-Identifier: curl
|
||
|
|
Title: CURLINFO_CONN_ID
|
||
|
|
Section: 3
|
||
|
|
Source: libcurl
|
||
|
|
See-also:
|
||
|
|
- CURLINFO_XFER_ID (3)
|
||
|
|
- curl_easy_getinfo (3)
|
||
|
|
- curl_easy_setopt (3)
|
||
|
|
---
|
||
|
|
|
||
|
|
# NAME
|
||
|
|
|
||
|
|
CURLINFO_CONN_ID - get the ID of the last connection used by the handle
|
||
|
|
|
||
|
|
# SYNOPSIS
|
||
|
|
|
||
|
|
~~~c
|
||
|
|
#include <curl/curl.h>
|
||
|
|
|
||
|
|
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONN_ID,
|
||
|
|
curl_off_t *conn_id);
|
||
|
|
~~~
|
||
|
|
|
||
|
|
# DESCRIPTION
|
||
|
|
|
||
|
|
Pass a pointer to a *curl_off_t* to receive the connection identifier last
|
||
|
|
used by the handle. Stores -1 if there was no connection used.
|
||
|
|
|
||
|
|
The connection id is unique among all connections using the same
|
||
|
|
connection cache. This is implicitly the case for all connections in the
|
||
|
|
same multi handle.
|
||
|
|
|
||
|
|
# PROTOCOLS
|
||
|
|
|
||
|
|
All
|
||
|
|
|
||
|
|
# EXAMPLE
|
||
|
|
|
||
|
|
~~~c
|
||
|
|
int main(void)
|
||
|
|
{
|
||
|
|
CURL *curl = curl_easy_init();
|
||
|
|
if(curl) {
|
||
|
|
CURLcode res;
|
||
|
|
|
||
|
|
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
|
||
|
|
|
||
|
|
/* Perform the request */
|
||
|
|
res = curl_easy_perform(curl);
|
||
|
|
|
||
|
|
if(!res) {
|
||
|
|
curl_off_t conn_id;
|
||
|
|
res = curl_easy_getinfo(curl, CURLINFO_CONN_ID, &conn_id);
|
||
|
|
if(!res) {
|
||
|
|
printf("Connection used: %" CURL_FORMAT_CURL_OFF_T "\n", conn_id);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
~~~
|
||
|
|
|
||
|
|
# AVAILABILITY
|
||
|
|
|
||
|
|
Added in 8.2.0
|
||
|
|
|
||
|
|
# RETURN VALUE
|
||
|
|
|
||
|
|
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
|