A lightweight HTTP/1.1 server implementation built from scratch in Go, parsing TCP connections directly without using the standard net/http package.

• HTTP/1.1 Protocol Support: Handles request parsing, headers, and bodies
• Chunked Transfer Encoding: Supports streaming responses with trailers
• Custom Routes: Includes demo endpoints with different status codes
• Video Streaming: Serves video files with proper content types
• HTTP Proxying: Can proxy requests to external services (e.g., httpbin.org)

• Go 1.16 or higher
• Git (for cloning the repository)

# Clone the repository
git clone https://github.com/shv-ng/http-from-tcp
cd http-from-tcp

# Install dependencies
go mod download

# Start the HTTP server
go run cmd/httpserver/main.go

The server will start on port 42069.

For debugging raw HTTP requests:

go run cmd/tcplistener/main.go

Once the server is running, you can make requests:

# Basic GET request
curl http://localhost:42069/

# Test error responses
curl http://localhost:42069/yourproblem  # Returns 400
curl http://localhost:42069/myproblem    # Returns 500

# Stream video content
curl http://localhost:42069/video

# Test chunked transfer encoding with trailers
curl http://localhost:42069/httpbin/stream/20 -v

• / - Returns a 200 OK response with HTML
• /yourproblem - Returns a 400 Bad Request
• /myproblem - Returns a 500 Internal Server Error
• /video - Streams a video file (requires assets/vim.mp4)
• /httpbin/stream/* - Proxies streaming requests to httpbin.org with chunked encoding

Run the test suite:

# Run all tests
go test ./...

# Run tests with verbose output
go test -v ./...

# Run tests for a specific package
go test ./internal/request
go test ./internal/headers

The project is organized into several internal packages:

• request - HTTP request parsing
• response - HTTP response writing
• headers - Header parsing and manipulation
• server - TCP server and connection handling

1. Make your changes to the codebase
2. Run tests to ensure nothing breaks
3. Test manually with curl or your browser

Press Ctrl+C to gracefully stop the server.

curl -X POST http://localhost:42069/ \
  -H "Content-Type: application/json" \
  -d '{"type": "dark mode", "size": "medium"}'

curl -i http://localhost:42069/

curl http://localhost:42069/httpbin/stream/10 -v

This will show chunked response with SHA256 hash and content length in trailers.

MIT License - see LICENSE file for details