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 +1,68 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_TCP_FASTOPEN
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_SSL_FALSESTART (3)
+Protocol:
+  - TCP
+Added-in: 7.49.0
+---
+
+# NAME
+
+CURLOPT_TCP_FASTOPEN - TCP Fast Open
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TCP_FASTOPEN, long enable);
+~~~
+
+# DESCRIPTION
+
+Pass a long as parameter set to 1L to enable or 0 to disable.
+
+TCP Fast Open (RFC 7413) is a mechanism that allows data to be carried in the
+SYN and SYN-ACK packets and consumed by the receiving end during the initial
+connection handshake, saving up to one full round-trip time (RTT).
+
+Beware: the TLS session cache does not work when TCP Fast Open is enabled. TCP
+Fast Open is also known to be problematic on or across certain networks.
+
+# DEFAULT
+
+0
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+    curl_easy_setopt(curl, CURLOPT_TCP_FASTOPEN, 1L);
+    curl_easy_perform(curl);
+  }
+}
+~~~
+
+# NOTES
+
+This option is only supported on Linux and macOS 10.11 or later.
+
+# %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).