Network Programming: Client-Server Architecture

Chapter 29 examines client-server communication models, connection management, and Uniform Resource Locator (URL) protocols. The lesson covers the client connection lifecycle via connect(), and the server acceptance phase via accept(), which extracts pending connection requests from the queue and returns a new active socket dedicated to that client. Data transmission is demonstrated using send() and recv() buffers, addressing blocking vs non-blocking I/O behaviors. The chapter explains URL structure (scheme, host, port, path, query string), HTML document delivery, and the HTTP request-response cycle between web browsers and servers. In this chapter, students investigate key structural foundations of Windows programming and systems architecture. Through practical analysis of Win32 APIs, the lesson clarifies fundamental runtime mechanisms and memory management models. Special attention is given to message dispatching, operating system control transfer, and robust error management. Mastering these core principles allows learners to develop responsive, secure, and resource-efficient desktop software applications. Analytical exercises and solved examples further assist students preparing for Virtual University midterm and final term exams. The curriculum systematically connects low-level system design with modern software engineering paradigms and practical debugging strategies. Reviewing the accompanying lecture handouts and conceptual diagrams reinforces understanding of kernel and user space interactions. Consistent hands-on practice with API prototypes and data structures ensures comprehensive preparation for both theoretical assessments and practical development tasks. In this chapter, students investigate key structural foundations of Windows programming and systems architecture. Through practical analysis of Win32 APIs, the lesson clarifies fundamental runtime mechanisms and memory management models. Special attention is given to message dispatching, operating system control transfer, and robust error management. Mastering these core principles allows learners to develop responsive, secure, and resource-efficient desktop software applications. Analytical exercises and solved examples further assist students preparing for Virtual University midterm and final term exams. The curriculum systematically connects low-level system design with modern software engineering paradigms and practical debugging strategies.