Advanced Echo Server

WebSockets

Advanced Echo Server supports WebSocket connections, echoing messages back to the client. A web-based tester is available at /web-ws.

How It Works

graph TD
  A[Client Connects] --> B[Upgrade to WebSocket]
  B --> C{Receive Message}
  C -->|Text/Binary| D[Echo Message]
  C -->|Close| E[Close Connection]
  D --> F[Send Back]
  F --> C

WebSocket Endpoint

Connect to /ws to echo messages (text or binary, 1KB buffer).

• Endpoint: ws://localhost:8080/ws
• Example (using wscat):

wscat -c ws://localhost:8080/ws
# Connected
> hello
< hello

WebSocket Tester

Access a browser-based tester at /web-ws to send and receive messages.

• URL: http://localhost:8080/web-ws
• Features: Send messages, view responses, monitor connection status.

Notes

• Supports subprotocols if specified in client request.
• Messages are logged if LOG_BODY=true.
• Rate limiting applies if configured via ECHO_RATE_LIMIT_RPS/ECHO_RATE_LIMIT_BURST.
• Connections close cleanly on client disconnect or error.