Форум программистов [Powered by Invision Power Board]

Код



#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <process.h>
#include <windows.h>
#include <winsock2.h>

#define host "127.0.0.1"

int tryconnect(LPVOID param)
{
    SOCKET sock;
    struct sockaddr_in addr;
    int currentport, targetport, err;
    int port = (int)param;
    WSADATA wsaData;
    HOSTENT *hst;
    
    targetport = port + 100;
printf("%d targetport, %d port\n\n", targetport, port);
        err = WSAStartup(MAKEWORD(2,2), &wsaData);
    if (err != NO_ERROR) {
      printf("WSAStartup failed: %d\n", err);
      return 1;
    }
        if ((sock=socket(AF_INET,SOCK_STREAM,0))<0)
    {
        printf("Error socket %d\n",WSAGetLastError());
        WSACleanup(); 
        return 1;
    }


          addr.sin_family=AF_INET;
          if (inet_addr(host) != INADDR_NONE)
        addr.sin_addr.s_addr=inet_addr(host);
    else
    {
        if (hst=gethostbyname(host))
            addr.sin_addr.s_addr=((unsigned long **) hst->h_addr_list)[0][0];
        else
        {
            printf("Unknown host: %d\n",WSAGetLastError());
            closesocket(sock);
            WSACleanup();
            return 1;
        }
    }
    

    for(currentport = port; currentport <= targetport; ++currentport )
    {
        printf("in process\n");
        addr.sin_port = htons( currentport );

      err = (connect(sock,(sockaddr *)&addr,sizeof(addr)));..валится сдесь
      
      if(err != SOCKET_ERROR)
        
       {
        printf("%d - succesess\n", currentport);
     }
        else
      {
        printf("%d - error\n", currentport);
      }
    }
return 0;
}

int main(int argc, char *argv[])
{
    
    
    int startport, finalport;
    DWORD a;
    HANDLE hTHread;
    if(argc < 4)
    {
        //printf("Usage: thread.exe [resourse] [start port] [final port]");
        //return 1;
    }

    startport = atoi(argv[2]);
    finalport = atoi(argv[3]);
    //host = argv[1];

    for(startport; startport < finalport; startport += 100)
    {
    
        hTHread = CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)tryconnect,  (void*)startport, NULL, &a);
        if(hTHread == NULL)printf("Error creating thread: %d", GetLastError());
    }
    
}