tcpb

README

TCPB

TCP Bridge under HTTP protocol.

websocket tunnel side/client implmented with go websocket gorilla/websocket http connect/post tunnel server directly using envoy, only implmented tunnel client in my repo.

Usage

start up tcp server and envoy tunnel server side

docker-compose -f .docker/docker-compose.yml up -d

start tunnel client side

# tunnel remote tcp to local port 10001

# http post tunnel, using config in docker-compose.yaml: /etc/envoy/envoy_post.yaml
go run ./cmd/client/ --tunnel=http://127.0.0.1:10000 -port 10001 --method=POST

# http connect tunnel, using config in docker-compose.yaml: /etc/envoy/envoy_connect.yaml
# go run ./cmd/client/ --tunnel=http://127.0.0.1:10000 -port 10001

test with tcp client

test envoy encapsulate tcp server：

# type STOP to exist.
go run ./cmd/test-tool --addr 127.0.0.1:20000

test with tunnel client function:

# type STOP to exist.
go run ./cmd/test-tool --addr 127.0.0.1:10001

test websocket client/side:

# terminal 1
go run ./cmd/server/ -port 30000
# terminal 2
go run ./cmd/client/ --tunnel=ws://127.0.0.1:30000/127.0.0.1:20000 -port 10001
# terminal 3
go run ./cmd/test-tool --addr 127.0.0.1:10001

Documentation

Index

• type Bridge
  • func (b *Bridge) TCP2Tunnel(src net.Conn, proxyURL string) error
  • func (b *Bridge) TCP2WS(src net.Conn, wsURL string) error
  • func (b *Bridge) WS2TCP(src *websocket.Conn, tcpAddress string) error

Types

type Bridge

type Bridge struct {
	WSProxyGetter func(*http.Request) (*url.URL, error)
	HeartInterval time.Duration
}

Bridge implement data flow tunnel between tcp client/server with websocket.

func (*Bridge) TCP2Tunnel

func (b *Bridge) TCP2Tunnel(src net.Conn, proxyURL string) error

TCP2Tunnel tcp client -> tcp tunnel server(http/https/http2.0 or socket5).

func (*Bridge) TCP2WS

func (b *Bridge) TCP2WS(src net.Conn, wsURL string) error

TCP2WS tcp client -> websocket tunnel

func (*Bridge) WS2TCP

func (b *Bridge) WS2TCP(src *websocket.Conn, tcpAddress string) error

WS2TCP websocket tunnel -> tcp server