arp.rar_类似tracert

#include <stdio.h> #include <tchar.h> #include <Winsock2.h> #include <ws2tcpip.h> #pragma comment (lib,"ws2_32.lib") #pragma pack(push,1) struct ip_hdr{ u_char h_verlen; u_char tos; unsigned short total_len; unsigned short ident; unsigned short frag_offset; u_char tt1; u_char proto; unsigned short checksum; IN_ADDR src_ip; IN_ADDR dst_ip; }; struct icmp_hdr{ u_char icmp_type; u_char icmp_code; unsigned short icmp_ckecksum; unsigned short icmp_id; unsigned icmp_seq; }; struct udp_hdr{ unsigned short src_port; unsigned short dst_port; unsigned short pkt_len; unsigned short ckecksum; }; void tracertByIcmpEcho(IN_ADDR *src_ip,IN_ADDR *dst_ip); void sent(); //发送数据 void sent(){ printf("目的地址："); WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD( 1, 1 ); err = WSAStartup( wVersionRequested, &wsaData ); if ( err != 0 ) { printf("we could not find a usable"); /* WinSock DLL. */ return; } /* Confirm that the WinSock DLL supports 2.2.*/ /* Note that if the DLL supports versions greater */ /* than 2.2 in addition to 2.2, it will still return */ /* 2.2 in wVersion since that is the version we */ /* requested. */ if ( LOBYTE( wsaData.wVersion ) != 1 || HIBYTE( wsaData.wVersion ) != 1 ) { /* Tell the user that we could not find a usable */ /* WinSock DLL. */ WSACleanup( ); return; } /* The WinSock DLL is acceptable. Proceed. */ //创建服务器套接字 SOCKET Svr = socket(AF_INET,SOCK_DGRAM,0); //创建地址 SOCKADDR_IN addrSvr; addrSvr.sin_family = AF_INET; addrSvr.sin_port = htons(6000); addrSvr.sin_addr.S_un.S_addr = inet_addr("192.168.1.1"); char recvBuf[128]; char sendBuf[128]; int len = sizeof(sockaddr); while(true) { gets(sendBuf); //发送数据 sendto(Svr,sendBuf,strlen(sendBuf)+1,0,(sockaddr*)&addrSvr,len); //接收数据 recvfrom(Svr,recvBuf,128,0,(sockaddr*)&addrSvr,&len); char* dst_ip = inet_ntoa(addrSvr.sin_addr); printf("%s said: %s/n",dst_ip,recvBuf); } closesocket(Svr); WSACleanup(); } //获取主机的ip地址 void CheckIP(void) //定义CheckIP（）函数，用于获取本机IP地址 { printf("源地址："); WSADATA wsaData; char name[255];//定义用于存放获得的主机名的变量 char *src_ip;//定义IP地址变量 PHOSTENT hostinfo; //记录主机的信息 //调用MAKEWORD（）获得Winsock版本的正确值，用于加载Winsock库 if ( WSAStartup( MAKEWORD(2,0), &wsaData ) == 0 ) { //现在是加载Winsock库，如果WSAStartup（）函数返回值为0，说明加载成功，程序可以继续 if( gethostname ( name, sizeof(name)) == 0) { //如果成功地将本地主机名存放入由name参数指定的缓冲区中 if((hostinfo = gethostbyname(name)) != NULL) { //这是获取主机名，如果获得主机名成功的话，将返回一个指针，指向hostinfo，hostinfo //为PHOSTENT型的变量，下面即将用到这个结构体 src_ip = inet_ntoa (*(struct in_addr *)*hostinfo->h_addr_list); //调用inet_ntoa（）函数，将hostinfo结构变量中的h_addr_list转化为标准的点分表示的IP //地址（如192.168.0.1） printf("%s\n",src_ip);//输出IP地址 } } WSACleanup( );//卸载Winsock库，并释放所有资源 } } void main() { CheckIP(); sent(); }