curl-w32/docs/libcurl/opts/CURLINFO_NUM_CONNECTS.md

66 lines
1.4 KiB
Markdown
Raw Normal View History

---
c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
SPDX-License-Identifier: curl
Title: CURLINFO_NUM_CONNECTS
Section: 3
Source: libcurl
See-also:
- curl_easy_getinfo (3)
- curl_easy_setopt (3)
---
# NAME
CURLINFO_NUM_CONNECTS - get number of created connections
# SYNOPSIS
~~~c
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_NUM_CONNECTS, long *nump);
~~~
# DESCRIPTION
Pass a pointer to a long to receive how many new connections libcurl had to
create to achieve the previous transfer (only the successful connects are
counted). Combined with CURLINFO_REDIRECT_COUNT(3) you are able to know how
many times libcurl successfully reused existing connection(s) or not. See the
connection options of curl_easy_setopt(3) to see how libcurl tries to make
persistent connections to save time.
# 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");
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
res = curl_easy_perform(curl);
if(res == CURLE_OK) {
long connects;
res = curl_easy_getinfo(curl, CURLINFO_NUM_CONNECTS, &connects);
if(res)
printf("It needed %ld connects\n", connects);
}
curl_easy_cleanup(curl);
}
}
~~~
# AVAILABILITY
Added in 7.12.3
# RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.