https://github.com/kezhengjie/epoll-tcp-port-forward

a small demo shows how to use epoll.small program implements port forwarding with epoll.also support Windows using wepoll
https://github.com/kezhengjie/epoll-tcp-port-forward

c epoll epoll-demo epoll-example linux-app linux-epoll port-forward port-forwarding tcp tcp-port-forward wepoll wepoll-example wepoll-tcp-port-forward

Last synced: 6 days ago
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a small demo shows how to use epoll.small program implements port forwarding with epoll.also support Windows using wepoll

• Host: GitHub
• URL: https://github.com/kezhengjie/epoll-tcp-port-forward
• Owner: kezhengjie
• License: mit
• Created: 2024-08-06T06:14:06.000Z (5 months ago)
• Default Branch: main
• Last Pushed: 2024-08-09T07:32:09.000Z (5 months ago)
• Last Synced: 2024-12-25T03:22:16.705Z (9 days ago)
• Topics: c, epoll, epoll-demo, epoll-example, linux-app, linux-epoll, port-forward, port-forwarding, tcp, tcp-port-forward, wepoll, wepoll-example, wepoll-tcp-port-forward
• Language: C
• Homepage:
• Size: 61.5 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# epoll-tcp-port-forward

This program implements TCP port forwarding using epoll.  

It is designed for those who want to learn epoll through a practical project.  

Note: This program is not recommended for production use.  

For production, IPTABLES IS A BETTER CHOICE.  

# Compile And Run

```shell

# Requires cmake to build this project

cd epoll-tcp-port-forward

cmake -B ./build .

cmake --build build --config MinSizeRel --target all

./build/tcp_port_forward 31212 127.0.0.1 22 # Forward any data from port 31212 to local port 22

```

Alternatively, you can simply run:

```shell

gcc tcp_port_forward.c

./a.out 31212 127.0.0.1 22 # Forward any data from port 31212 to local port 22

```

# Windows

There's no native epoll support on Windows.  

Thanks to [wepoll](https://github.com/piscisaureus/wepoll),an open source library that implements epoll API,you could still run this project on Windows.

```shell

cd epoll-tcp-port-forward\windows

git submodule update --init

cmake -B ./build .

cmake --build build --config MinSizeRel --target all

.\build\tcp_port_forward 31212 127.0.0.1 22 # Forward any data from port 31212 to local port 22

```