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 +1,80 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLMOPT_NETWORK_CHANGED
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_FRESH_CONNECT (3)
+  - CURLOPT_FORBID_REUSE (3)
+Protocol:
+  - All
+Added-in: 8.16.0
+---
+
+# NAME
+
+CURLMOPT_NETWORK_CHANGED - signal network changed
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_NETWORK_CHANGED,
+                            long value);
+~~~
+
+# DESCRIPTION
+
+Pass a long with a bitmask to tell libcurl how the multi
+handle should react. The following values in the mask are
+defined. All bits not mentioned are reserved for future
+extensions.
+
+This option can be set at any time and repeatedly. Each call only
+affects the *currently* cached connections and DNS information.
+Any connection created or DNS information added afterwards is
+cached the usual way again. Phrasing it another way: the option is
+not persisted but setting it serves as a "trigger"
+to clear the caches.
+
+The call affects only the connection and DNS cache of the multi handle
+itself and not the ones owned by SHARE handles.
+
+## CURLMNWC_CLEAR_CONNS
+
+No longer reuse any existing connection in the multi handle's
+connection cache. This closes all connections that are not in use.
+Ongoing transfers continue on the connections they operate on.
+
+## CURLMNWC_CLEAR_DNS
+
+Clear the multi handle's DNS cache.
+
+# DEFAULT
+
+0, which has no effect.
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURLM *m = curl_multi_init();
+  /* do transfers on the multi handle */
+  /* do not reuse existing connections */
+  curl_multi_setopt(m, CURLMOPT_NETWORK_CHANGED, CURLMNWC_CLEAR_CONNS);
+}
+~~~
+
+# %AVAILABILITY%
+
+# RETURN VALUE
+
+curl_multi_setopt(3) returns a CURLMcode indicating success or error.
+
+CURLM_OK (0) means everything was OK, non-zero means an error occurred, see
+libcurl-errors(3).