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e3fe020089
Remove the PROTOCOLS section from the source files completely and instead generate them based on the header data in the curldown files. It also generates TLS backend information for options marked for TLS as protocol. Closes #13175
69 lines
1.3 KiB
Markdown
69 lines
1.3 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLINFO_CONN_ID
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_XFER_ID (3)
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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Protocol:
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- All
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---
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# NAME
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CURLINFO_CONN_ID - get the ID of the last connection used by the handle
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONN_ID,
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curl_off_t *conn_id);
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~~~
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# DESCRIPTION
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Pass a pointer to a *curl_off_t* to receive the connection identifier last
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used by the handle. Stores -1 if there was no connection used.
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The connection id is unique among all connections using the same
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connection cache. This is implicitly the case for all connections in the
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same multi handle.
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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/* Perform the request */
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res = curl_easy_perform(curl);
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if(!res) {
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curl_off_t conn_id;
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res = curl_easy_getinfo(curl, CURLINFO_CONN_ID, &conn_id);
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if(!res) {
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printf("Connection used: %" CURL_FORMAT_CURL_OFF_T "\n", conn_id);
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}
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}
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}
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}
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~~~
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# AVAILABILITY
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Added in 8.2.0
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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