Websocket for Nim

We're working towards an implementation of the Websocket protocol for Nim. This is very much a work in progress, and not yet in a usable state.

Building and testing

Install dependencies:

nimble install -d

Starting HTTP server:

nim c -r test/server.nim

Testing Server Response:

curl --location --request GET 'http://localhost:8888'

Testing Websocket Handshake:

curl --include \
   --no-buffer \
   --header "Connection: Upgrade" \
   --header "Upgrade: websocket" \
   --header "Host: example.com:80" \
   --header "Origin: http://example.com:80" \
   --header "Sec-WebSocket-Key: SGVsbG8sIHdvcmxkIQ==" \
   --header "Sec-WebSocket-Version: 13" \
   http://localhost:8888/ws

Roadmap

• Framing
  • Text Messages
  • Binary Messages
• Pings/Pongs
• Reserved Bits
• Opcodes
  • Non-control Opcodes
  • Control Opcodes
• Fragmentation
• UTF-8 Handling
• Close Handling
  • Basic close behavior
  • Close frame structure
  • Payload length
  • Valid close codes
  • Invalid close codes
• Integrate Autobahn Test suite. (In progress)
• WebSocket Compression
• WebSocket Extensions
• Performance