https://github.com/gotoren/echoman

【hands-on sample】echoman: Echoes messages to peer nodes through the TUN/TAP interface.
https://github.com/gotoren/echoman

echo-server go rawsocket tcpip

Last synced: 19 days ago
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【hands-on sample】echoman: Echoes messages to peer nodes through the TUN/TAP interface.

• Host: GitHub
• URL: https://github.com/gotoren/echoman
• Owner: GotoRen
• License: mit
• Created: 2022-10-07T16:55:51.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2022-12-03T11:43:14.000Z (about 2 years ago)
• Last Synced: 2024-06-20T13:25:38.805Z (7 months ago)
• Topics: echo-server, go, rawsocket, tcpip
• Language: Go
• Homepage:
• Size: 5.69 MB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# 📣 echoman: simple echo server

## 🌱　Overview

- This is a simple tool where a client generates packets over TCP/IP and sends them to a server.

- The echo server echoes data by swapping src/dst L3 address and L4 port number. (However, some parameters such as TypeCode and CheckSum are recalculated.)

## ✏️ Documents

- [Information: Network design](./docs/01_information.md)

- [Application: An application that communicates over the overlay network](./docs/02_application.md)

- [Usage: How to start echoman](./docs/03_usage.md)

- [Appendix: About sockets](./docs/04_appendix.md)

## 📚 References

- [RFC 792 - Internet Control Message Protocol](https://www.rfc-editor.org/rfc/rfc792)

- [RFC 768 - User Datagram Protocol](https://www.rfc-editor.org/rfc/rfc768)

- [Universal TUN/TAP device driver](https://docs.kernel.org/networking/tuntap.html)

- [Checksum calculation](https://o21o21.hatenablog.jp/entry/2019/01/31/120436)