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Computer Networking Lab 1
A tiny C/S chatting application

Supports online chatting (TCP, P2P).
Supports offline messages (TCP, server relay).
Supports online file transmitting (UDP, P2P).

The code is unlicensed.

• nana (modified in order to add user event)
  Providing GUIs
• Crypto++
  Providing AES 256-CFB and SHA-256
• yaml-cpp
  Providing configuration files

Their licenses are placed here.

UchClient provides the client.
UchServer provides the server.
UchCommon provides wheels.
UchProtocol provides application layer protocols for this application.
UchFile provides the file transmitting routine.

P2P file transmitting is implemented over a handmade RDT protocol called Ucp.
UchFile is called as a child process.
Windows Socket 2 and Windows API plays an important role in this application.
Again, the nana GUI library is modified.

Do not write code as ugly as I do.
It is not recommended that copying my code directly into your assignments or labs.
This application only supports Windows platform.
This application requires at least Windows 7.
The Win32 version is not tested.