Introduce a fast proxy mode to improve HTTP/1.1 performances with backends

Co-authored-by: Romain <rtribotte@users.noreply.github.com>
Co-authored-by: Julien Salleyron <julien.salleyron@gmail.com>

docs/content/reference/static-configuration/cli-ref.md

@@ -228,6 +228,12 @@ WriteTimeout is the maximum duration before timing out writes of the response. I
 `--entrypoints.<name>.udp.timeout`:  
 Timeout defines how long to wait on an idle session before releasing the related resources. (Default: ```3```)
 
+`--experimental.fastproxy`:  
+Enable the FastProxy implementation. (Default: ```false```)
+
+`--experimental.fastproxy.debug`:  
+Enable debug mode for the FastProxy implementation. (Default: ```false```)
+
 `--experimental.kubernetesgateway`:  
 (Deprecated) Allow the Kubernetes gateway api provider usage. (Default: ```false```)
 

docs/content/reference/static-configuration/env-ref.md

@@ -228,6 +228,12 @@ WriteTimeout is the maximum duration before timing out writes of the response. I
 `TRAEFIK_ENTRYPOINTS_<NAME>_UDP_TIMEOUT`:  
 Timeout defines how long to wait on an idle session before releasing the related resources. (Default: ```3```)
 
+`TRAEFIK_EXPERIMENTAL_FASTPROXY`:  
+Enable the FastProxy implementation. (Default: ```false```)
+
+`TRAEFIK_EXPERIMENTAL_FASTPROXY_DEBUG`:  
+Enable debug mode for the FastProxy implementation. (Default: ```false```)
+
 `TRAEFIK_EXPERIMENTAL_KUBERNETESGATEWAY`:  
 (Deprecated) Allow the Kubernetes gateway api provider usage. (Default: ```false```)
 

docs/content/reference/static-configuration/file.toml

@@ -509,6 +509,8 @@
       [experimental.localPlugins.LocalDescriptor1.settings]
         envs = ["foobar", "foobar"]
         mounts = ["foobar", "foobar"]
+  [experimental.fastProxy]
+    debug = true
 
 [core]
   defaultRuleSyntax = "foobar"

docs/content/reference/static-configuration/file.yaml

@@ -572,6 +572,8 @@ experimental:
         mounts:
           - foobar
           - foobar
+  fastProxy:
+    debug: true
   kubernetesGateway: true
 core:
   defaultRuleSyntax: foobar