Configurable max request header size

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

@@ -141,6 +141,9 @@ HTTP configuration.
 `--entrypoints.<name>.http.encodequerysemicolons`:  
 Defines whether request query semicolons should be URLEncoded. (Default: ```false```)
 
+`--entrypoints.<name>.http.maxheaderbytes`:  
+Maximum size of request headers in bytes. (Default: ```1048576```)
+
 `--entrypoints.<name>.http.middlewares`:  
 Default middlewares for the routers linked to the entry point.
 

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

@@ -150,6 +150,9 @@ UDP port to advertise, on which HTTP/3 is available. (Default: ```0```)
 `TRAEFIK_ENTRYPOINTS_<NAME>_HTTP_ENCODEQUERYSEMICOLONS`:  
 Defines whether request query semicolons should be URLEncoded. (Default: ```false```)
 
+`TRAEFIK_ENTRYPOINTS_<NAME>_HTTP_MAXHEADERBYTES`:  
+Maximum size of request headers in bytes. (Default: ```1048576```)
+
 `TRAEFIK_ENTRYPOINTS_<NAME>_HTTP_MIDDLEWARES`:  
 Default middlewares for the routers linked to the entry point.
 

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

@@ -51,6 +51,7 @@
     [entryPoints.EntryPoint0.http]
       middlewares = ["foobar", "foobar"]
       encodeQuerySemicolons = true
+      maxHeaderBytes = 42
       [entryPoints.EntryPoint0.http.redirections]
         [entryPoints.EntryPoint0.http.redirections.entryPoint]
           to = "foobar"

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

@@ -80,6 +80,7 @@ entryPoints:
               - foobar
               - foobar
       encodeQuerySemicolons: true
+      maxHeaderBytes: 42
     http2:
       maxConcurrentStreams: 42
     http3: