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Socket communication relies on a well-defined handshake process for establishing and terminating connections. Connection Handshake (Three-Way Handshake) Client sends a connection request. Server acknowledges the request. Client confirms the connection. After these steps, data can be exchanged using Send and Receive. Disconnection Handshake (F ...

TCP Overview The Transmission Control Protocol (TCP) is a reliable, connection-oriented protocol operating at the transport layer. Defined by IETF's RFC 793, TCP ensures data integrity through sequencing, acknowledgment, and retransmission mechanisms. Communication using TCP requires three stages: establishing a connection, transferring data, a ...

Software Development Architectures When building software applications, developers must create both client and server components. Server: Provides continuous, around-the-clock services Client: Initiates requests to locate and consume services Two primary architectural patterns exist: C/S Architecture (Client/Server) Examples: Desktop QQ appli ...

Socket interfaces facilitate network communication between hosts over IP networks. In Python, the socket module provides access to BSD-style sockets. This implementation focuses on TCP-based endpoints using custom wrapper classes for cleaner state management. Server-Side Architecture A standard TCP server initializes an IPv4 socket, binds it to ...

Introduction This article introduces how to implement network communication using DotNetty. 1. Program Design Using the third-party library DotNetty to implement the host computer client. Official website: https://github.com/Azure/DotNetty/ Keywords: high performance, ease of use DotNetty Architecture The overall architecture of DotNetty can be ...

Wireshark Filter Fundamentals When analyzing network traffic with Wireshark, filters are essential for navigating through large packet captures. They help isolate specific protocols, IP addresses, or port communications. Filter Expression Syntax Protocol filtering: tcp or udp to display only TCP or UDP packets IP adress filtering: ip.src == 19 ...

Retrieving File Metadata with os.Stat() The os.Stat() function returns a FileInfo interface containing metadata about a file: info, err := os.Stat(filename) The FileInfo interface defines the following methods: type FileInfo interface { Name() string // base name of the file Size() int64 // length in bytes for regular file ...

When implementing TCP data transmission, serializing and deserializing variable-length structures requires careful handling. This article covers three practical approaches with working code examples. Byte Alignment Consideration Before diving into the implementation, it's critical to address byte alignment. TCP message definitions should use si ...

Understanding HTTP, Socket, TCP, and UDP Concepts The five-layer network model outlines the communication process between servers. HTTP implements various functions by adhering to speciifc protocol specifications. Socket acts as an abstraction layer, allowing direct interaction with TCP and UDP without dealing with HTTP protocols. TCP (Transmis ...

TCP/IP Reference Model The TCP/IP model consists of four layers that handle different aspects of network communication: Link Layer: Handles IP packet encapsulation and de-encapsulation, manages ARP/RARP message transmission and reception Network Layer: Responsible for routing packets and directing them toward their destination network or host ...