ipn/ipnlocal: add HTTP/2 h2c server support to peerapi on non-mobile platforms

To make ExitDNS cheaper.

Might not finish client-side support in December before 1.20, but at
least server support can start rolling out ahead of clients being
ready for it.

Tested with curl against peerapi.

Updates #1713

Change-Id: I676fed5fb1aef67e78c542a3bc93bddd04dd11fe
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
pull/3532/head
Brad Fitzpatrick 3 years ago committed by Brad Fitzpatrick
parent abc00e9c8d
commit d3d503d997

@ -275,7 +275,9 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
golang.org/x/net/dns/dnsmessage from net+
golang.org/x/net/http/httpguts from net/http+
golang.org/x/net/http/httpproxy from net/http
golang.org/x/net/http2/hpack from net/http
golang.org/x/net/http2 from golang.org/x/net/http2/h2c+
golang.org/x/net/http2/h2c from tailscale.com/ipn/ipnlocal
golang.org/x/net/http2/hpack from net/http+
golang.org/x/net/idna from golang.org/x/net/http/httpguts+
golang.org/x/net/ipv4 from golang.zx2c4.com/wireguard/device
golang.org/x/net/ipv6 from golang.zx2c4.com/wireguard/device+

@ -46,6 +46,10 @@ import (
var initListenConfig func(*net.ListenConfig, netaddr.IP, *interfaces.State, string) error
// addH2C is non-nil on platforms where we want to add H2C
// ("cleartext" HTTP/2) support to the peerAPI.
var addH2C func(*http.Server)
type peerAPIServer struct {
b *LocalBackend
rootDir string // empty means file receiving unavailable
@ -492,6 +496,9 @@ func (pln *peerAPIListener) serve() {
httpServer := &http.Server{
Handler: h,
}
if addH2C != nil {
addH2C(httpServer)
}
go httpServer.Serve(&oneConnListener{Listener: pln.ln, conn: c})
}
}

@ -0,0 +1,22 @@
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build !ios && !android
// +build !ios,!android
package ipnlocal
import (
"net/http"
"golang.org/x/net/http2"
"golang.org/x/net/http2/h2c"
)
func init() {
addH2C = func(s *http.Server) {
h2s := &http2.Server{}
s.Handler = h2c.NewHandler(s.Handler, h2s)
}
}
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