HTTP Request Checker

Overview

This tool validates raw HTTP request strings to ensure they are well-formed and comply with common web standards (RFCs). It helps developers, API testers, and network engineers debug, validate, or understand HTTP communication by providing detailed feedback on syntax and structure. The entire process is performed securely on the client-side.

Features

• Comprehensive Validation: Checks the request line, headers, and body for syntactical correctness and adherence to standards.
• Request Line Analysis: Validates the HTTP method, URI format, and HTTP version.
• Header Validation: Ensures correct header format, checks for mandatory headers like Host in HTTP/1.1, and verifies Content-Length against the actual body size.
• Body Parsing: If the Content-Type is application/json, the tool attempts to parse the JSON and reports any syntax errors. It also performs basic checks for URL-encoded forms.
• Line Ending Consistency: Detects mixed or incorrect line endings (CRLF vs. LF) which can cause issues with some servers.
• Detailed Feedback: Provides a clear list of errors and warnings with contextual information to help you quickly identify and fix issues.
• Structured Output: Displays the parsed request components (method, URI, headers, body) in an organized and readable format.

Implementation Details

• Client-Side Logic: All parsing and validation happens in the user's browser, ensuring data privacy and instant feedback. No request data is sent to the server.
• State Management: Uses React hooks (useState, useEffect, useCallback) for efficient state handling of the input, parsed data, and validation messages.
• Performance: Employs lodash.debounce on the validation function to ensure a smooth user experience during rapid typing without excessive re-processing.
• Parsing Engine: Uses a combination of regular expressions and string manipulation to break down the raw HTTP request into its constituent parts.
• UI Integration: Seamlessly integrates with the site's design system using shared components like InputArea, OutputArea, and ToolOptions. The output is enhanced with react-syntax-highlighter for better readability.