rename module, add attribution and notices

Dockerfile

@@ -1,21 +1,23 @@
+# build
 FROM golang:1.17-alpine AS builder
 
 RUN     mkdir /app
 WORKDIR /app
-# ADD     go.mod main.go /app/
+
 COPY    go.mod ./
 COPY    go.sum ./
 RUN     go mod download
 
 COPY    *.go ./
 
-RUN     go build -o ./udp-echo
+RUN     go build -o ./gw
 
+# deploy
 FROM alpine AS runner
 
-RUN mkdir /app/ 
+RUN mkdir /app/
 
 WORKDIR /app
-COPY --from=builder /app/udp-echo ./
+COPY --from=builder /app/gw ./
 
-CMD ["./udp-echo"]
+CMD ["./gw"]

fly.toml

@@ -1,5 +1,3 @@
-# fly.toml file generated for withered-bird-2688 on 2022-03-09T17:58:44+05:30
-
 app = "withered-bird-2688"
 
 kill_signal = "SIGINT"

go.mod

@@ -1,5 +1,5 @@
-module github.com/fly-aps/udp-echo
+module github.com/celzero/gateway
 
-go 1.17
+go 1.18
 
 require github.com/pires/go-proxyproto v0.6.2

http.go

@@ -1,3 +1,27 @@
+// Copyright (c) 2022 RethinkDNS and its authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+//
+// This file incorporates work covered by the following copyright and
+// permission notice:
+//
+//   Copyright 2017 Google Inc.
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+// Adopted from: github.com/inetaf/tcpproxy/blob/be3ee21/http.go
 package main
 
 import (

sni.go

@@ -1,3 +1,27 @@
+// Copyright (c) 2022 RethinkDNS and its authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+//
+// This file incorporates work covered by the following copyright and
+// permission notice:
+//
+//   Copyright 2017 Google Inc.
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+// Adopted from: github.com/inetaf/tcpproxy/blob/be3ee21/sni.go
 package main
 
 import (
@@ -42,5 +66,6 @@ type sniSniffConn struct {
 	net.Conn // nil; crash on any unexpected use
 }
 
+// ref: archive.is/SdYhp
 func (c sniSniffConn) Read(p []byte) (int, error) { return c.r.Read(p) }
 func (sniSniffConn) Write(p []byte) (int, error)  { return 0, io.EOF }