snmp test

// snmp_test.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include <stdlib.h>//#include <windows.h>#include <winsock2.h>#pragma comment(lib, "Ws2_32.lib")#define  MAXLENT 1000TCHAR* g_strfilePath;  TCHAR* g_strIpAddress;  int g_nTimes = 0;  int g_nInterval = 0;void usage()  {  printf("usage: [-f:str] [-i:IP address] [-l:number] [-t:number]\n\n");printf("     -f   The file you want to send\n");printf("     -x   Witch ip you want to send to\n");printf("     -l   The time between two transmission\n");printf("     -t   how much times you want to transmit file\n");ExitProcess(1);}  void ValidateArgs(int argc,TCHAR ** argv){int i;if (argc < 5) {usage();}for (i=1;i<argc;i++){if((argv[i][0]=='-')||(argv[i][2]== NULL)){switch(tolower(argv[i++][1])){case 'f':if (argv[i]) {g_strfilePath = argv[i];} else {usage();}break;case 'i':if (argv[i]) {g_strIpAddress = argv[i];} else {usage();}break;case 'l':if (argv[i]) {g_nInterval  = _ttoi(argv[i]);} else {usage();}break;case 't':if (argv[i]) {g_nTimes = _ttoi(argv[i]);} else {usage();}break;default:usage();break;}} else {usage();break;}}}int _tmain(int argc, _TCHAR* argv[])  {  SOCKET sock = 0;  WORD wVersionRequested = 0;  WSADATA wsaData;  int nErr = 0;  sockaddr_in addrto;   HANDLE hFile = NULL;  LPOFSTRUCT lpOpstruct = NULL;  DWORD dwMaxLen;  DWORD dwLen;    char *buf = new char[1000];char *ipbuf; ValidateArgs(argc, argv);if (0 == g_nInterval ) {g_nInterval = 1000;}if (0 == g_nTimes) {g_nTimes = 1;}dwMaxLen = MAXLENT;hFile = CreateFile(g_strfilePath, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,0);if(!hFile) {  wprintf(L"file not exist!");  }  if(!ReadFile(hFile, (LPVOID)buf,dwMaxLen, &dwLen, NULL) || dwLen == 0) {  wprintf(L" file read failed!");  }wVersionRequested = MAKEWORD(2,2);  nErr = WSAStartup(wVersionRequested, & wsaData);  if (0 != nErr) {  wprintf(L"Socket 2.2 init failed!");  return nErr;  }if (LOBYTE( wsaData.wVersion ) != 2 || HIBYTE( wsaData.wVersion ) != 2 )  {  WSACleanup();CloseHandle(hFile);return 0;  }  sock = socket(  AF_INET,           //UDP,TCP, etc   SOCK_DGRAM,        //UDP type   IPPROTO_UDP        //protocol   );  if (INVALID_SOCKET == sock ) {  wprintf(L"Socket create failed!");WSACleanup();return 0;  }             int cCharacters = int(wcslen(g_strIpAddress)+1);int cbAnsi = cCharacters*2;ipbuf = new char[cbAnsi];memset(&addrto,0,sizeof(addrto));  WideCharToMultiByte(CP_ACP,0, g_strIpAddress,cCharacters,ipbuf,cbAnsi, NULL, NULL);addrto.sin_family = AF_INET;  addrto.sin_port = htons(162);addrto.sin_addr.s_addr = inet_addr(ipbuf);while (g_nTimes--) {Sleep(g_nInterval);if (sendto(sock, buf, dwLen, 0, (sockaddr*)&addrto, sizeof(addrto)) == SOCKET_ERROR) {nErr = WSAGetLastError();wprintf(L"WSAGetLastError = %d ", nErr);break;}}closesocket(sock);WSACleanup();CloseHandle(hFile);return 0;  }