Update networking layer w/ CURL and emscripten impl

2025-11-08 01:50:36 +11:00
parent a17925904d
commit f6874dc55a
4105 changed files with 694617 additions and 179 deletions
@@ -0,0 +1,73 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_MAXAGE_CONN
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_FORBID_REUSE (3)
+  - CURLOPT_FRESH_CONNECT (3)
+  - CURLOPT_MAXLIFETIME_CONN (3)
+  - CURLOPT_TIMEOUT (3)
+Protocol:
+  - All
+Added-in: 7.65.0
+---
+
+# NAME
+
+CURLOPT_MAXAGE_CONN - max idle time allowed for reusing a connection
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXAGE_CONN, long age);
+~~~
+
+# DESCRIPTION
+
+Pass a long as parameter containing *age* - the maximum time in seconds
+allowed for an existing connection to have been idle to be considered for
+reuse for this request.
+
+The "connection cache" holds previously used connections. When a new request
+is to be done, libcurl considers any connection that matches for reuse. The
+CURLOPT_MAXAGE_CONN(3) limit prevents libcurl from trying too old
+connections for reuse, since old connections have a higher risk of not working
+and thus trying them is a performance loss and sometimes service loss due to
+the difficulties to figure out the situation. If a connection is found in the
+cache that is older than this set *age*, it is closed instead.
+
+# DEFAULT
+
+118 seconds
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+
+    /* only allow 30 seconds idle time */
+    curl_easy_setopt(curl, CURLOPT_MAXAGE_CONN, 30L);
+
+    curl_easy_perform(curl);
+  }
+}
+~~~
+
+# %AVAILABILITY%
+
+# RETURN VALUE
+
+curl_easy_setopt(3) returns a CURLcode indicating success or error.
+
+CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
+libcurl-errors(3).