joyent/http-parserArchived
Http Parser
http-parser 是一个 C 语言库，专为零拷贝 HTTP 消息解析、URL 解构以及协议升级和分块编码管理而设计。它提供了从 HTTP 请求和响应中提取头部、方法和状态码的实用程序。
该项目包含一个零拷贝 URL 解析器，用于将字符串解构为各个组件，以及一种用于检测协议切换请求的机制，以识别非 HTTP 数据开始的确切字节偏移量。它还具有用于处理分块传输编码数据流的解码器。
Features
- Message Parsing - Implements a zero-copy approach to extract header fields, status codes, and methods from HTTP requests and responses.
- Zero-Copy Parsing - Extracts data from input buffers by referencing pointers to the original memory instead of allocating new tokens.
- Chunked Transfer Encoding - Decodes data streams using chunked transfer encoding to retrieve the final response body.
- HTTP Message Parsers - Provides a C library for extracting headers, methods, and status codes using a high-performance zero-copy approach.
- URL Parsers - Offers a high-performance utility for deconstructing URL strings into individual components without memory allocation.
- Incremental Stream Processing - Processes incoming HTTP data incrementally in small chunks to avoid loading entire requests into memory.
- State-Based Parsing - Uses a state-machine based parsing technique to track context and handle byte streams incrementally.
- URL Component Deconstructors - Splits complex URL strings into constituent parts such as host, path, and query parameters.
- URL Data Parsing - Converts raw URL strings into structured components using a zero-copy utility.
- HTTP Upgrade Handlers - Handles the conversion of inbound HTTP requests into persistent connections by detecting protocol upgrade requests.
- Stream Offset Tracking - Tracks the exact byte position within the message stream to identify where protocol transitions occur.
- C Memory Management - Implements low-level memory allocation and cleanup for buffers within a C-based library to minimize overhead.
- Protocol Upgrades - Detects requests to switch protocols and identifies the byte offset where the new protocol stream begins.
- Development Utilities - C-based HTTP request/response parser.
