Tracert与Ping程序设计与实现资源-CSDN文库

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h：4个

cpp：3个

obj：3个

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《Tracert与Ping程序设计与实现：深入理解计算机网络通信》在计算机网络的世界里，Tracert（轨迹跟踪）和Ping是两个至关重要的工具，它们为网络故障排查、性能评估以及网络路径分析提供了有力的支持。这次我们将深入探讨如何通过编程实现这两个工具，以及它们在计算机网络中的作用。让我们从Ping程序开始。Ping，全称为Packet Internet Groper，是一种网络诊断工具，用于检查网络连接的连通性。通过发送ICMP（Internet Control Message Protocol）回显请求报文到目标主机并接收其回应，我们可以判断目标主机是否可达。在我们的课程设计中，我们将使用socket套接字编程来实现这一功能。在Python或C语言中，可以创建一个基于ICMP协议的socket，然后向目标地址发送数据包，等待响应，并计算往返时间，从而获取网络延迟信息。下面是一段简单的Python Ping程序示例： ```python import socket import struct import time def ping(host): icmp = socket.getprotobyname('icmp') s = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp) packet = b'\x08\x00' + struct.pack('!HHBB', 1, 0, 8, 0) + b'\x00\x00\x00\x00' start_time = time.time() s.sendto(packet, (host, 1)) while True: try: data, addr = s.recvfrom(1024) elapsed = time.time() - start_time print(f"Reply from {host}: bytes={len(data)} time={elapsed:.3f}ms") break except: pass s.close() ping('8.8.8.8') # 使用Google DNS服务器作为测试目标 ``` 接下来，我们转向Tracert（也称为traceroute）。Tracert通过记录数据包在网络中经过的路由器，帮助我们了解数据包从源到目的地的具体路径。它通过增加TTL（Time To Live）字段的值，使得数据包在达到目标之前会在途中被中间路由器丢弃，从而暴露路径上的每个跃点。在实现Tracert时，我们需要对每一个TTL值进行Ping操作，直到成功收到目标主机的回应。以下是一个简化版的Python Tracert实现： ```python def tracert(host, max_hops=30): icmp = socket.getprotobyname('icmp') for hop in range(1, max_hops + 1): s = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp) packet = b'\x08\x00' + struct.pack('!HHBB', 1, 0, hop, 0) + b'\x00\x00\x00\x00' start_time = time.time() s.sendto(packet, (host, 1)) while True: try: data, addr = s.recvfrom(1024) if addr[0] != host: print(f"Hop {hop}: {addr[0]}") break except: pass s.close() print(f"Hop {max_hops+1}: {host}") tracert('www.google.com') # 使用Google网站作为测试目标 ``` 需要注意的是，上述代码仅适用于具有相应权限的环境，因为使用ICMP协议通常需要管理员权限。此外，实际的Tracert实现可能需要处理更复杂的网络情况，如MTU（最大传输单元）大小问题、IP选项设置等。通过这些基本的网络工具实现，我们可以更好地理解网络通信的工作原理，同时也能在遇到网络问题时快速定位和解决。在计算机网络课程设计中，这样的实践不仅锻炼了编程能力，也加深了对网络协议和网络架构的理解。在cyhping文件中，可能包含了实现上述功能的具体代码和相关文档，对于学习者来说，仔细阅读和分析这些代码将有助于深化对网络编程和网络诊断工具的认识。同时，动手实践这些工具的实现，将是提升网络技术技能的重要步骤。

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cyhping.rar （30个子文件）

cyhping

cyhping.opt 51KB

cyhping.suo 7KB

res

cyhping.ico 1KB

cyhping.rc2 399B

cyhpingDlg.cpp 15KB

cyhping.rc 7KB

cyhping.dsw 539B

cyhping.plg 956B

cyhping.clw 2KB

cyhping.ncb 137KB

cyhping.sln 209B

StdAfx.cpp 209B

resource.h 1KB

cyhping.dsp 4KB

cyhping.h 1KB

StdAfx.h 1KB

cyhping.cpp 2KB

cyhpingDlg.h 2KB

Debug

StdAfx.obj 103KB

cyhpingDlg.obj 63KB

cyhping.exe 116KB

cyhping.obj 15KB

cyhping.ilk 237KB

vc60.idb 241KB

cyhping.pdb 409KB

cyhping.res 3KB

cyhping.pch 5.25MB

vc60.pdb 372KB

cyhping.aps 22KB

ReadMe.txt 4KB

======================================================================== MICROSOFT FOUNDATION CLASS LIBRARY : cyhping ======================================================================== AppWizard has created this cyhping application for you. This application not only demonstrates the basics of using the Microsoft Foundation classes but is also a starting point for writing your application. This file contains a summary of what you will find in each of the files that make up your cyhping application. cyhping.dsp This file (the project file) contains information at the project level and is used to build a single project or subproject. Other users can share the project (.dsp) file, but they should export the makefiles locally. cyhping.h This is the main header file for the application. It includes other project specific headers (including Resource.h) and declares the CCyhpingApp application class. cyhping.cpp This is the main application source file that contains the application class CCyhpingApp. cyhping.rc This is a listing of all of the Microsoft Windows resources that the program uses. It includes the icons, bitmaps, and cursors that are stored in the RES subdirectory. This file can be directly edited in Microsoft Visual C++. cyhping.clw This file contains information used by ClassWizard to edit existing classes or add new classes. ClassWizard also uses this file to store information needed to create and edit message maps and dialog data maps and to create prototype member functions. res\cyhping.ico This is an icon file, which is used as the application's icon. This icon is included by the main resource file cyhping.rc. res\cyhping.rc2 This file contains resources that are not edited by Microsoft Visual C++. You should place all resources not editable by the resource editor in this file. ///////////////////////////////////////////////////////////////////////////// AppWizard creates one dialog class: cyhpingDlg.h, cyhpingDlg.cpp - the dialog These files contain your CCyhpingDlg class. This class defines the behavior of your application's main dialog. The dialog's template is in cyhping.rc, which can be edited in Microsoft Visual C++. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named cyhping.pch and a precompiled types file named StdAfx.obj. Resource.h This is the standard header file, which defines new resource IDs. Microsoft Visual C++ reads and updates this file. ///////////////////////////////////////////////////////////////////////////// Other notes: AppWizard uses "TODO:" to indicate parts of the source code you should add to or customize. If your application uses MFC in a shared DLL, and your application is in a language other than the operating system's current language, you will need to copy the corresponding localized resources MFC42XXX.DLL from the Microsoft Visual C++ CD-ROM onto the system or system32 directory, and rename it to be MFCLOC.DLL. ("XXX" stands for the language abbreviation. For example, MFC42DEU.DLL contains resources translated to German.) If you don't do this, some of the UI elements of your application will remain in the language of the operating system. /////////////////////////////////////////////////////////////////////////////

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