From 41c7bd27b495ab9b5edca7afb0cf99d5e1b52944 Mon Sep 17 00:00:00 2001
From: Matt Holt <mholt@users.noreply.github.com>
Date: Tue, 5 May 2020 12:33:21 -0600
Subject: httpserver: Add experimental H2C support (#3289)

* reverse_proxy: Initial attempt at H2C transport/client support (#3218)

I have not tested this yet

* Experimentally enabling H2C server support (closes #3227)

See also #3218

I have not tested this

* reverseproxy: Clean up H2C transport a bit

* caddyhttp: Update godoc for h2c server; clarify experimental status

* caddyhttp: Fix trailers when recording responses (fixes #3236)

* caddyhttp: Tweak h2c config settings and docs
---
 modules/caddyhttp/app.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'modules/caddyhttp/app.go')

diff --git a/modules/caddyhttp/app.go b/modules/caddyhttp/app.go
index 8e7f3ea..f695276 100644
--- a/modules/caddyhttp/app.go
+++ b/modules/caddyhttp/app.go
@@ -27,6 +27,8 @@ import (
 	"github.com/caddyserver/caddy/v2/modules/caddytls"
 	"github.com/lucas-clemente/quic-go/http3"
 	"go.uber.org/zap"
+	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/h2c"
 )
 
 func init() {
@@ -282,6 +284,14 @@ func (app *App) Start() error {
 			Handler:           srv,
 		}
 
+		// enable h2c if configured
+		if srv.AllowH2C {
+			h2server := &http2.Server{
+				IdleTimeout: time.Duration(srv.IdleTimeout),
+			}
+			s.Handler = h2c.NewHandler(srv, h2server)
+		}
+
 		for _, lnAddr := range srv.Listen {
 			listenAddr, err := caddy.ParseNetworkAddress(lnAddr)
 			if err != nil {
-- 
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