bigg01/tcpproxy repository overview

A simple TCP proxy service. It listens on an address (host and port combination) and forwards all TCP traffic to a remote address.

Installation:

$ go get -u github.com/bigg01/tcpproxy

$ go build -o tcpproxy main.go

Usage:

$ tcpproxy -l 0.0.0.0:29418 -r origin.server:29418

$ docker build -t tcpproxy:latest .

⁠image is arround 4MB :-)

$ docker images |grep -i tcpproxy tcpproxy latest 50938d4749ec About a minute ago 3.48MB

$ docker run -it tcpproxy:latest flag needs an argument: -l Usage of ./tcpproxy: -l string local address to listen on -logconn log connections -r string remote address to dial

$ docker run --rm -it -p 8023:8023 -p 8080:8080 tcpproxy:latest tcpproxy -l 0.0.0.0:8023 -r 10.0.0.208:3000 -logconn true INFO[0003] connected: 172.17.0.1:57728

$ curl -v telnet://127.0.0.1:8023

• Rebuilt URL to: telnet://127.0.0.1:8023/
• Trying 127.0.0.1...
• TCP_NODELAY set
• Connected to 127.0.0.1 (127.0.0.1) port 8023 (#0)

⁠Prom

$ curl http://localhost:8080/metrics⁠ |grep -i proxy_tcp_connection

⁠HELP proxy_tcp_connection Current number of established Connection

⁠TYPE proxy_tcp_connection gauge

proxy_tcp_connection 1

$ docker pull quay.io/bigg01/tcpproxy

⁠Run TCP Server

$

$ oc run -it gotest1 --rm=true --restart='Never' --image=rhel7/rhel-tools:latest -- /bin/sh If you don't see a command prompt, try pressing enter.

sh-4.2$ curl -v telnet://tcpproxy.tcpproxy.svc:8023

• About to connect() to tcpproxy.tcpproxy.svc port 8023 (#0)
• Trying 172.30.214.132...
• Connected to tcpproxy.tcpproxy.svc (172.30.214.132) port 8023 (#0)
• Closing connection 0 Message received.sh-4.2$

$ echo -n "test out the server" | nc tcpproxy.tcpproxy.svc 8023 Message received.sh-4.2$

$ go run tcpserver.go Listening on 0.0.0.0:3333