[FEAT] 添加计算机网络课程的实验报告

[ChiyoYuki]

No description provided.

[Copilot]

Pull Request Overview

This PR adds computer network laboratory reports for various networking protocols and technologies. The submission includes comprehensive experimental documentation, code implementations, and data analysis for 7 different networking labs covering protocols from Ethernet to Socket Programming.

Key Changes:

• Added 7 laboratory reports covering fundamental networking protocols (Ethernet, IPv4, ARP, UDP, TCP, Socket Programming)
• Included practical implementations with client-server socket programming in C
• Added network analysis results with Wireshark packet captures and detailed protocol examination

Reviewed Changes

Copilot reviewed 21 out of 78 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
docs/undergraduate/软件工程学院/计算机网络/README.md	Main index page listing all laboratory reports with navigation links
docs/undergraduate/软件工程学院/计算机网络/lab/lab*/lib*.md	Laboratory report documents for each networking protocol experiment
docs/undergraduate/软件工程学院/计算机网络/lab/lab7/*.c	Socket programming implementations (client.c and server.c)
docs/undergraduate/软件工程学院/计算机网络/lab/lab7/*.txt	Output logs and test data from socket programming experiments
docs/undergraduate/软件工程学院/计算机网络/lab/lab*/*.txt	Various network configuration files and command outputs

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[Copilot]

The len variable is used uninitialized in the accept() call. It should be initialized to sizeof(sin) before the call to properly specify the size of the address structure.

Suggested change

	while(1) {
	while(1) {
	len = sizeof(sin);

[Copilot]

Assignment in while condition should use comparison operator. The current code assigns the return value of recv() to len, but this overwrites the address length from accept(). Consider using a separate variable for the receive length.

[Copilot]

Duplicate include of unistd.h on consecutive lines. Remove one of the duplicate includes.

Suggested change

#include <unistd.h>

[KirisameVanilla]

lgtm

[KirisameVanilla]

这是什么