[Global]: loading init

deps/curl/docs/libcurl/opts/CURLINFO_CONN_ID.md

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+---
+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.