headscale/noise.go
2022-08-20 00:06:26 +02:00

40 lines
1.1 KiB
Go

package headscale
import (
"net/http"
"github.com/rs/zerolog/log"
"golang.org/x/net/http2"
"golang.org/x/net/http2/h2c"
"tailscale.com/control/controlhttp"
"tailscale.com/net/netutil"
)
const (
// ts2021UpgradePath is the path that the server listens on for the WebSockets upgrade.
ts2021UpgradePath = "/ts2021"
)
// NoiseUpgradeHandler is to upgrade the connection and hijack the net.Conn
// in order to use the Noise-based TS2021 protocol. Listens in /ts2021.
func (h *Headscale) NoiseUpgradeHandler(
writer http.ResponseWriter,
req *http.Request,
) {
log.Trace().Caller().Msgf("Noise upgrade handler for client %s", req.RemoteAddr)
noiseConn, err := controlhttp.AcceptHTTP(req.Context(), writer, req, *h.noisePrivateKey)
if err != nil {
log.Error().Err(err).Msg("noise upgrade failed")
http.Error(writer, err.Error(), http.StatusInternalServerError)
return
}
server := http.Server{}
server.Handler = h2c.NewHandler(h.noiseMux, &http2.Server{})
err = server.Serve(netutil.NewOneConnListener(noiseConn, nil))
if err != nil {
log.Info().Err(err).Msg("The HTTP2 server was closed")
}
}