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 +1,119 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLSHOPT_SHARE
+Section: 3
+Source: libcurl
+See-also:
+  - CURLSHOPT_UNSHARE (3)
+  - curl_share_cleanup (3)
+  - curl_share_init (3)
+  - curl_share_setopt (3)
+Protocol:
+  - All
+Added-in: 7.10.3
+---
+
+# NAME
+
+CURLSHOPT_SHARE - add data to share
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLSHcode curl_share_setopt(CURLSH *share, CURLSHOPT_SHARE, long type);
+~~~
+
+# DESCRIPTION
+
+The *type* parameter specifies what specific data that should be shared
+and kept in the share object that was created with curl_share_init(3).
+The given *type* must be one of the values described below. You can set
+CURLSHOPT_SHARE(3) multiple times with different data arguments to have
+the share object share multiple types of data. Unset a type again by setting
+CURLSHOPT_UNSHARE(3).
+
+If any of the data is to be shared in multiple threads then mutex callbacks
+must be set as well. See CURLSHOPT_LOCKFUNC(3) and CURLSHOPT_UNLOCKFUNC(3).
+
+## CURL_LOCK_DATA_COOKIE
+
+Cookie data is shared across the easy handles using this shared object. Note
+that this does not activate an easy handle's cookie handling. You can do that
+separately by using CURLOPT_COOKIEFILE(3) for example.
+
+It is not supported to share cookies between multiple concurrent threads.
+
+## CURL_LOCK_DATA_DNS
+
+Cached DNS hosts are shared across the easy handles using this shared
+object. Note that when you use the multi interface, all easy handles added to
+the same multi handle share the DNS cache by default without using this option.
+
+## CURL_LOCK_DATA_SSL_SESSION
+
+SSL sessions are shared across the easy handles using this shared object. This
+reduces the time spent in the SSL handshake when reconnecting to the same
+server.
+
+Note that when you use the multi interface, all easy handles added to the same
+multi handle share the SSL session cache by default without using this option.
+
+## CURL_LOCK_DATA_CONNECT
+
+Put the connection cache in the share object and make all easy handles using
+this share object share the connection cache.
+
+It is not supported to share connections between multiple concurrent threads.
+
+Connections that are used for HTTP/2 or HTTP/3 multiplexing only get
+additional transfers added to them if the existing connection is held by the
+same multi or easy handle. libcurl does not support doing multiplexed streams
+in different threads using a shared connection.
+
+Note that when you use the multi interface, all easy handles added to the same
+multi handle share the connection cache by default without using this option.
+
+## CURL_LOCK_DATA_PSL
+
+The Public Suffix List stored in the share object is made available to all
+easy handle bound to the later. Since the Public Suffix List is periodically
+refreshed, this avoids updates in too many different contexts.
+
+Added in 7.61.0.
+
+Note that when you use the multi interface, all easy handles added to the same
+multi handle share the PSL cache by default without using this option.
+
+## CURL_LOCK_DATA_HSTS
+
+The in-memory HSTS cache.
+
+It is not supported to share the HSTS between multiple concurrent threads.
+
+Added in 7.88.0
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURLSHcode sh;
+  CURLSH *share = curl_share_init();
+  sh = curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_COOKIE);
+  if(sh)
+    printf("Error: %s\n", curl_share_strerror(sh));
+}
+~~~
+
+# %AVAILABILITY%
+
+# RETURN VALUE
+
+CURLSHE_OK (zero) means that the option was set properly, non-zero means an
+error occurred. See libcurl-errors(3) for the full list with
+descriptions.