Fast & clean tcp proxy tunnel written in Go
This project was intended for debugging text-based protocols.
Source
$ go get -v github.com/lutfailham96/go-tcp-proxy-tunnelBuild & install to system
$ git clone https://github.com/lutfailham96/go-tcp-proxy-tunnel \
&& cd go-tcp-proxy-tunnel \
&& make build \
&& sudo make install$ go-tcp-proxy-tunnel --help
Usage of go-tcp-proxy-tunnel:
-bs uint
connection buffer size
-c string
load config from JSON file
-dsr
disable server host resolve
-ip string
remote TCP payload replacer
-l string
local address (default "127.0.0.1:8082")
-op string
local TCP payload replacer
-r string
remote address (default "127.0.0.1:443")
-s string
server host address
-sni string
SNI hostname
-sv
run on server mode
-tls
enable tls/secure connection
Accept incoming connection to use as SSH tunnel
$ go-tcp-proxy-tunnel \
-l 127.0.0.1:8082 \
-r 127.0.0.1:22 \
-sv
Mode : server proxy
Buffer size : 65535
go-tcp-proxy-tunnel proxing from 127.0.0.1:8082 to 127.0.0.1:22nginx site configuration
server {
listen 80;
listen [::]:80;
listen 443 ssl;
listen [::]:443 ssl;
# SSL configuration
ssl_certificate /etc/nginx/ssl/fullchain.pem;
ssl_certificate_key /etc/nginx/ssl/privkey.pem;
server_name my-server;
location / {
proxy_pass http://127.0.0.1:8082;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
include proxy_params;
}
}
or run using go-ws-web-server binary for simplicity
$ sudo go-ws-web-server
Websocket web server running on 0.0.0.0:80, 0.0.0.0:443Use custom payload
$ go-tcp-proxy-tunnel \
-l 127.0.0.1:9999 \
-r 127.0.0.1:10443 \
-s myserver:443 \
-dsr \
-sni cloudflare.com \
-op "GET ws://[sni] HTTP/1.1[crlf]Host: [host][crlf]Upgrade: websocket[crlf]Connection: keep-alive[crlf][crlf]"
Mode : client proxy
Buffer size : 65535
Connection : insecure
Proxying from 127.0.0.1:9999 to 127.0.0.1:10443stunnel configuration
[ws]
client = yes
accept = 127.0.0.1:10443
connect = 104.15.50.5:443
sni = cloudflare.com
cert = /etc/stunnel/ssl/stunnel.pem
Tunnel over SSH connection
$ ssh -o "ProxyCommand=ncat --proxy 127.0.0.1:9999 %h %p" -v4ND 1080 my-user@localhostUse custom payload
$ go-tcp-proxy-tunnel \
-l 127.0.0.1:9999 \
-r 104.15.50.5:443 \
-s myserver:443 \
-dsr \
-tls \
-sni cloudflare.com \
-op "GET ws://[sni] HTTP/1.1[crlf]Host: [host][crlf]Upgrade: websocket[crlf]Connection: keep-alive[crlf][crlf]"
Mode : client proxy
Buffer size : 65535
Connection : secure (TLS)
SNI Host : cloudflare.com
Proxying from 127.0.0.1:9999 to 104.15.50.1:443Tunnel over SSH connection
$ ssh -o "ProxyCommand=ncat --proxy 127.0.0.1:9999 %h %p" -v4ND 1080 my-user@localhostsever
{
"BufferSize": 65535,
"ServerProxyMode": true,
"ProxyInfo": "server proxy",
"LocalAddress": "127.0.0.1:8082",
"RemoteAddress": "127.0.0.1:22"
}client
{
"BufferSize": 65535,
"ServerProxyMode": false,
"ProxyInfo": "client proxy",
"LocalAddress": "127.0.0.1:9999",
"RemoteAddress": "127.0.0.1:10443",
"LocalPayload": "GET ws://[sni] HTTP/1.1[crlf]Host: [host][crlf]Connection: keep-alive[crlf]Upgrade: websocket[crlf][crlf]",
"RemotePayload": "HTTP/1.1 200 Connection Established[crlf][crlf]",
"ServerHost": "my-server:443"
"SNIHost": "cloudflare.com",
}client (TLS)
{
"BufferSize": 65535,
"ServerProxyMode": false,
"ProxyInfo": "client proxy",
"LocalAddress": "127.0.0.1:9999",
"RemoteAddress": "104.15.50.1:443",
"LocalPayload": "GET ws://[sni] HTTP/1.1[crlf]Host: [host][crlf]Connection: keep-alive[crlf]Upgrade: websocket[crlf][crlf]",
"RemotePayload": "HTTP/1.1 200 Connection Established[crlf][crlf]",
"TLSEnabled": true,
"SNIHost": "cloudflare.com",
"ServerHost": "my-server:443"
}Example run go-tcp-proxy-tunnel using config file
$ go-tcp-proxy-tunnel -c config.json- Add unit test
- Add linting CI using GitHub workflow
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