计算机网络作业
2017-12-02 16:15
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题目:可视化界面实现ping的功能
界面设计ping按键的事件
void CMFCApplication2Dlg::OnBnClickedButton1() { // TODO: 在此添加控件通知处理程序代码 UpdateData(TRUE); CPing objPing; PingReply reply; CString str1,str2,str3,temp; int j = 0; m_ip.GetWindowText(str1);//获取edit中的内容。 m_count.GetWindowText(str3); i = _ttoi(str3); //CString--》char* int len = WideCharToMultiByte(CP_ACP, 0, str1, -1, NULL, 0, NULL, NULL); char* szDestIP = new char[len + 1]; ; WideCharToMultiByte(CP_ACP, 0, str1, -1, szDestIP, len, NULL, NULL); while (j<i) { objPing.Ping(szDestIP, &reply);//ping str2 += "Reply from "; //temp.Format(_T("%s"), szDestIP); str2 += str1; str2 += ": bytes="; temp.Format(_T("%d"), reply.m_dwBytes); str2 += temp; str2 += " time="; temp.Format(_T("%d"), reply.m_dwRoundTripTime); str2 += temp; str2 += "ms TTL="; temp.Format(_T("%d"), reply.m_dwTTL); str2 += temp; str2 += "\r\n"; m_show.SetWindowTextW(str2); UpdateData(FALSE); j++; //Sleep(500); } }
ping.h
#pragma once //在默认windows.h会包含winsock.h,当你包含winsock2.h就会冲突,因此在包含windows.h前需要定义一个宏,#define WIN32_LEAN_AND_MEAN ;去除winsock.h //要么将#include <winsock2.h>放在#include<windows.h>前面或者直接去掉#include<windows.h> #include "stdafx.h" #include <winsock2.h> #pragma comment(lib, "WS2_32") // 链接到WS2_32.lib #define DEF_PACKET_SIZE 32 #define ECHO_REQUEST 8 #define ECHO_REPLY 0 struct IPHeader { BYTE m_byVerHLen; //4位版本+4位首部长度 BYTE m_byTOS; //服务类型 USHORT m_usTotalLen; //总长度 USHORT m_usID; //标识 USHORT m_usFlagFragOffset; //3位标志+13位片偏移 BYTE m_byTTL; //TTL BYTE m_byProtocol; //协议 USHORT m_usHChecksum; //首部检验和 ULONG m_ulSrcIP; //源IP地址 ULONG m_ulDestIP; //目的IP地址 }; struct ICMPHeader { BYTE m_byType; //类型 BYTE m_byCode; //代码 USHORT m_usChecksum; //检验和 USHORT m_usID; //标识符 USHORT m_usSeq; //序号 ULONG m_ulTimeStamp; //时间戳(非标准ICMP头部) }; struct PingReply { USHORT m_usSeq; DWORD m_dwRoundTripTime; DWORD m_dwBytes; DWORD m_dwTTL; }; class CPing { public: CPing(); ~CPing(); BOOL Ping(DWORD dwDestIP, PingReply *pPingReply = NULL, DWORD dwTimeout = 2000); BOOL Ping(char *szDestIP, PingReply *pPingReply = NULL, DWORD dwTimeout = 2000); private: BOOL PingCore(DWORD dwDestIP, PingReply *pPingReply, DWORD dwTimeout); USHORT CalCheckSum(USHORT *pBuffer, int nSize); ULONG GetTickCountCalibrate(); private: SOCKET m_sockRaw; WSAEVENT m_event; USHORT m_usCurrentProcID; char *m_szICMPData; BOOL m_bIsInitSucc; private: static USHORT s_usPacketSeq; };
ping.cpp
#include "stdafx.h" #include "ping.h" #include <iostream> USHORT CPing::s_usPacketSeq = 0; CPing::CPing() :m_szICMPData(NULL), m_bIsInitSucc(FALSE) { WSADATA WSAData; //WSAStartup(MAKEWORD(2, 2), &WSAData); if (WSAStartup(MAKEWORD(1, 1), &WSAData) != 0) { /*如果初始化不成功则报错,GetLastError()返回发生的错误信息*/ printf("WSAStartup() failed: %d\n", GetLastError()); return; } m_event = WSACreateEvent(); m_usCurrentProcID = (USHORT)GetCurrentProcessId(); //setsockopt(m_sockRaw); /*if ((m_sockRaw = WSASocket(AF_INET, SOCK_RAW, IPPROTO_ICMP, NULL, 0, 0)) != SOCKET_ERROR) { WSAEventSelect(m_sockRaw, m_event, FD_READ); m_bIsInitSucc = TRUE; m_szICMPData = (char*)malloc(DEF_PACKET_SIZE + sizeof(ICMPHeader)); if (m_szICMPData == NULL) { m_bIsInitSucc = FALSE; } }*/ m_sockRaw = WSASocket(AF_INET, SOCK_RAW, IPPROTO_ICMP, NULL, 0, 0); if (m_sockRaw == INVALID_SOCKET) { std::cerr << "WSASocket() failed:" << WSAGetLastError() << std::endl; //10013 以一种访问权限不允许的方式做了一个访问套接字的尝试。 } else { WSAEventSelect(m_sockRaw, m_event, FD_READ); m_bIsInitSucc = TRUE; m_szICMPData = (char*)malloc(DEF_PACKET_SIZE + sizeof(ICMPHeader)); if (m_szICMPData == NULL) { m_bIsInitSucc = FALSE; } } } CPing::~CPing() { WSACleanup(); if (NULL != m_szICMPData) { free(m_szICMPData); m_szICMPData = NULL; } } BOOL CPing::Ping(DWORD dwDestIP, PingReply *pPingReply, DWORD dwTimeout) { return PingCore(dwDestIP, pPingReply, dwTimeout); } BOOL CPing::Ping(char *szDestIP, PingReply *pPingReply, DWORD dwTimeout) { if (NULL != szDestIP) { return PingCore(inet_addr(szDestIP), pPingReply, dwTimeout); } return FALSE; } BOOL CPing::PingCore(DWORD dwDestIP, PingReply *pPingReply, DWORD dwTimeout) { //判断初始化是否成功 if (!m_bIsInitSucc) { return FALSE; } //配置SOCKET sockaddr_in sockaddrDest; sockaddrDest.sin_family = AF_INET; sockaddrDest.sin_addr.s_addr = dwDestIP; int nSockaddrDestSize = sizeof(sockaddrDest); //构建ICMP包 int nICMPDataSize = DEF_PACKET_SIZE + sizeof(ICMPHeader); ULONG ulSendTimestamp = GetTickCountCalibrate(); USHORT usSeq = ++s_usPacketSeq; memset(m_szICMPData, 0, nICMPDataSize); ICMPHeader *pICMPHeader = (ICMPHeader*)m_szICMPData; pICMPHeader->m_byType = ECHO_REQUEST; pICMPHeader->m_byCode = 0; pICMPHeader->m_usID = m_usCurrentProcID; pICMPHeader->m_usSeq = usSeq; pICMPHeader->m_ulTimeStamp = ulSendTimestamp; pICMPHeader->m_usChecksum = CalCheckSum((USHORT*)m_szICMPData, nICMPDataSize); //发送ICMP报文 if (sendto(m_sockRaw, m_szICMPData, nICMPDataSize, 0, (struct sockaddr*)&sockaddrDest, nSockaddrDestSize) == SOCKET_ERROR) { return FALSE; } //判断是否需要接收相应报文 if (pPingReply == NULL) { return TRUE; } char recvbuf[256] = { "\0" }; while (TRUE) { //接收响应报文 if (WSAWaitForMultipleEvents(1, &m_event, FALSE, 100, FALSE) != WSA_WAIT_TIMEOUT) { WSANETWORKEVENTS netEvent; WSAEnumNetworkEvents(m_sockRaw, m_event, &netEvent); if (netEvent.lNetworkEvents & FD_READ) { ULONG nRecvTimestamp = GetTickCountCalibrate(); int nPacketSize = recvfrom(m_sockRaw, recvbuf, 256, 0, (struct sockaddr*)&sockaddrDest, &nSockaddrDestSize); if (nPacketSize != SOCKET_ERROR) { IPHeader *pIPHeader = (IPHeader*)recvbuf; USHORT usIPHeaderLen = (USHORT)((pIPHeader->m_byVerHLen & 0x0f) * 4); ICMPHeader *pICMPHeader = (ICMPHeader*)(recvbuf + usIPHeaderLen); if (pICMPHeader->m_usID == m_usCurrentProcID // 9cf7 是当前进程发出的报文 && pICMPHeader->m_byType == ECHO_REPLY //是ICMP响应报文 && pICMPHeader->m_usSeq == usSeq //是本次请求报文的响应报文 ) { pPingReply->m_usSeq = usSeq; pPingReply->m_dwRoundTripTime = nRecvTimestamp - pICMPHeader->m_ulTimeStamp; pPingReply->m_dwBytes = nPacketSize - usIPHeaderLen - sizeof(ICMPHeader); pPingReply->m_dwTTL = pIPHeader->m_byTTL; return TRUE; } } } } //超时 if (GetTickCountCalibrate() - ulSendTimestamp >= dwTimeout) { return FALSE; } } } USHORT CPing::CalCheckSum(USHORT *pBuffer, int nSize) { unsigned long ulCheckSum = 0; while (nSize > 1) { ulCheckSum += *pBuffer++; nSize -= sizeof(USHORT); } if (nSize) { ulCheckSum += *(UCHAR*)pBuffer; } ulCheckSum = (ulCheckSum >> 16) + (ulCheckSum & 0xffff); ulCheckSum += (ulCheckSum >> 16); return (USHORT)(~ulCheckSum); } ULONG CPing::GetTickCountCalibrate() { static ULONG s_ulFirstCallTick = 0; static LONGLONG s_ullFirstCallTickMS = 0; SYSTEMTIME systemtime; FILETIME filetime; GetLocalTime(&systemtime); SystemTimeToFileTime(&systemtime, &filetime); LARGE_INTEGER liCurrentTime; liCurrentTime.HighPart = filetime.dwHighDateTime; liCurrentTime.LowPart = filetime.dwLowDateTime; LONGLONG llCurrentTimeMS = liCurrentTime.QuadPart / 10000; if (s_ulFirstCallTick == 0) { s_ulFirstCallTick = GetTickCount(); } if (s_ullFirstCallTickMS == 0) { s_ullFirstCallTickMS = llCurrentTimeMS; } return s_ulFirstCallTick + (ULONG)(llCurrentTimeMS - s_ullFirstCallTickMS); }
演示
说明
1.程序没有DNS解析,所有只能输入ip地址执行ping。2.次数是指ping的次数。
3.程序没有做错误处理,输入不合理可能导致程序崩溃强退。
参考
http://www.cnblogs.com/goagent/p/4078940.html相关文章推荐
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