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 +1,30 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Long: happy-eyeballs-timeout-ms
+Arg: <ms>
+Help: Time for IPv6 before IPv4
+Added: 7.59.0
+Category: connection timeout
+Multi: single
+See-also:
+  - max-time
+  - connect-timeout
+Example:
+  - --happy-eyeballs-timeout-ms 500 $URL
+---
+
+# `--happy-eyeballs-timeout-ms`
+
+Set the timeout for Happy Eyeballs.
+
+Happy Eyeballs is an algorithm that attempts to connect to both IPv4 and IPv6
+addresses for dual-stack hosts, giving IPv6 a head-start of the specified
+number of milliseconds. If the IPv6 address cannot be connected to within that
+time, then a connection attempt is made to the IPv4 address in parallel. The
+first connection to be established is the one that is used.
+
+The range of suggested useful values is limited. Happy Eyeballs RFC 6555 says
+"It is RECOMMENDED that connection attempts be paced 150-250 ms apart to
+balance human factors against network load." libcurl currently defaults to
+200 ms. Firefox and Chrome currently default to 300 ms.