Continuing the series on building the Connexus library, this article will cover HTTP protocol mechanisms, URL structure, and constructing two key initial classes: CQueryParam for managing query parameters and CURL for handling complete URL elements.

HTTP Overview:
- HTTP is a stateless protocol layered on TCP/IP.
- Comprises request line (method, URL, version), headers, and body.
- Common methods: GET, POST, PUT, DELETE, PATCH.
- Status codes: 1xx (info), 2xx (success), 3xx (redirect), 4xx (client error), 5xx (server error).

URL Structure:
- Components: Protocol, Domain, Port (optional), Path, Query Params, Fragment (not supported in Connexus).
- Example breakdown: https://www.example.com:8080/market/symbols?active=EURUSD&timeframe=h1.

Class Construction:
- CURL: Manages URL components pragmatically.
- CQueryParam: Converts query strings to structured J...
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Explore the world of HTTP headers and their crucial role in client-server communication. This article focuses on understanding and implementing headers in HTTP requests and responses. Learn the essential functions of headers like Authentication, Cache Control, and Content-Type specification for secure and efficient data exchange. Discover how MetaTrader 5 automatically manages certain headers and how to customize them. This deep dive includes practical coding examples in MetaTrader 5 for adjusting headers and introduces the development of a class for managing HTTP headers. Enhance your understanding of protocol nuances to optimize algorithmic trading operations.
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Explore the intricacies of HTTP request bodies and their vital role in client-server data exchange. This article sheds light on configuring HTTP body formats like JSON in the Connexus library for MetaTrader 5, facilitating algorithmic trading development. Delve into the advantages of using char arrays over strings for performance in high-volume data scenarios. The newly introduced CHttpBody class in the Connexus library simplifies managing request bodies, supporting text and binary data without complex formatting issues. The insights provided streamline integration with REST APIs, essential for modern trading applications, enhancing data transmission efficiency and compatibility for developers. Discover more in this ongoing series.
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Explore the Connexus library's development, focusing on a crucial aspect of the HTTP protocol: methods and status codes. Learn about various HTTP methods like GET, POST, PUT, and DELETE, each serving different purposes in client-server communication. Understand how status codes categorize responses, from informational to error messages, enabling effective error handling. The creation of CHttpMethod and CHttpStatusCode classes in the Connexus library provides developers with enhanced control over HTTP communication. By understanding and implementing these features, developers can improve API interactions, reliability, and efficiency in algorithmic trading applications.
#MQL5 #MT5 #HTTP #Coding

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