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 +1,37 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Long: http3
+Tags: Versions
+Protocols: HTTP
+Added: 7.66.0
+Mutexed: http1.1 http1.0 http2 http2-prior-knowledge http3-only
+Requires: HTTP/3
+Help: Use HTTP/3
+Category: http
+Multi: mutex
+See-also:
+  - http1.1
+  - http2
+Example:
+  - --http3 $URL
+---
+
+# `--http3`
+
+Attempt HTTP/3 to the host in the URL, but fallback to earlier HTTP versions
+if the HTTP/3 connection establishment fails or is slow. HTTP/3 is only
+available for HTTPS and not for HTTP URLs.
+
+This option allows a user to avoid using the Alt-Svc method of upgrading to
+HTTP/3 when you know or suspect that the target speaks HTTP/3 on the given
+host and port.
+
+When asked to use HTTP/3, curl issues a separate attempt to use older HTTP
+versions with a slight delay, so if the HTTP/3 transfer fails or is slow, curl
+still tries to proceed with an older HTTP version. The fallback performs the
+regular negotiation between HTTP/1 and HTTP/2.
+
+Use --http3-only for similar functionality *without* a fallback.
+
+curl cannot do HTTP/3 over any proxy.