Windows multi-line threaded port scan

Not very familiar with multi-threading, the first simple application.

1 /*2 2015.5 HT3 multi-line threaded port scanning4 5 Netstat-an6 7 */8 9#include <iostream>Ten#include <process.h> One#include <winsock2.h> A #pragmaComment (lib, "Ws2_32.lib") - using namespacestd; -  the //port parameters passed by thread -typedefstruct  - { -UnsignedintMin_port; +UnsignedintMax_port; - }port; +Port *lpport =NewPort; A //Number of Threads at intThread_num; - //Mutex Amount - HANDLE Hmutex; -  - DWORD WINAPI Scan (lpvoid lpparameter) - { in     //Get Parameters -port* Port = (port*) Lpparameter; toSOCKET SOCKFD =NULL; + sockaddr_in sin; -sin.sin_family =af_inet; theSin.sin_addr. S_un. S_ADDR = inet_addr ("127.0.0.1"); *  $      for(unsignedinti = port->min_port; I <= port->max_port; ++i)Panax Notoginseng     { -         if(SOCKFD = =NULL) the         { +             //Creating Sockets ASOCKFD = socket (af_inet, Sock_stream,0); the             if(SOCKFD = =invalid_socket) +             { -cout <<"failed to create socket! "<<Endl; $                 return 0; $             } -         } -Sin.sin_port =htons (i); the         //connecting to a server -         intret = Connect (SOCKFD, (SOCKADDR *) &sin,sizeof(SOCKADDR));Wuyi         //request access to a mutex the WaitForSingleObject (Hmutex, INFINITE); -         if(ret = =socket_error) Wu         { -cout <<"Port:"<< I <<"Not Open!"<<Endl; About         } $         Else -         { -cout <<"Port:"<< I <<"Open!"<<Endl; - closesocket (SOCKFD); ASOCKFD =NULL; +         } the         //free access to a mutex - ReleaseMutex (Hmutex); $     } the  the     return 0; the } the  - intMain () in { the wsadata wsadata; the     if(WSAStartup (Makeword (2,2), &wsadata)! =0) About     { thecout <<"could not find the WinSock dll!"<<Endl; the         return 0; the     } +  -Hmutex =CreateMutex (NULL, FALSE, NULL); the Bayicout <<"Enter the start port and end port number:" ; theCIN >> Lpport->min_port >> lpport->Max_port; thecout <<"Number of input threads (less than £):"; -CIN >>Thread_num; -HANDLE handle[ $]; the     intScan_len = (lpport->max_port-lpport->min_port)/Thread_num; the      the      for(inti =0; i < Thread_num; ++i) the     { -Port *newport =NewPort; theNewport->min_port = Lpport->min_port + Scan_len *i; the         if(I < (Thread_num-1)) theNewport->max_port = Newport->min_port + Scan_len-1;94         Else the         { theNewport->max_port = lpport->Max_port; theHandle[i] = (handle) CreateThread (NULL,0, (lpthread_start_routine) scan, NewPort,0, NULL);98              Break; About         } -Handle[i] = (handle) CreateThread (NULL,0, (lpthread_start_routine) scan, NewPort,0, NULL);101     }102 waitformultipleobjects (Thread_num, handle, TRUE, INFINITE);103 104 CloseHandle (Hmutex); the     return 0;106}

Windows multi-line threaded port scan