yttp 0.0.2

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YTTP - Custom HTTP Parser

Project Objective

This project implements a custom HTTP parser that supports messages with or without request lines, unlike h11 which requires request lines.

Key Features

• Flexible Message Parsing: Supports both standard HTTP requests and header-only messages (like LSP/MCP protocols)
• Event-driven Architecture: Compatible with h11's interface using Request, Headers, Data, and EndOfMessage events
• Content-Length Body Parsing: Handles fixed-length message bodies
• Chunked Transfer Encoding: Supports chunked message parsing with hex size indicators
• Error Handling: Uses Result[T] pattern for consistent error handling without exceptions

Technical Implementation

The parser uses a state machine approach:

1. WANT_REQUEST_OR_HEADERS: Determines if first line is HTTP request or header
2. WANT_HEADERS: Parses header section
3. WANT_BODY: Parses message body based on Content-Length or Transfer-Encoding
4. COMPLETE: Message fully parsed

Use Case

Enables parsing of protocols that send header-only messages without HTTP request lines, which h11 cannot handle due to its strict HTTP compliance requirements.