[source lang=c]
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <winbase.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <conio.h>
#include <time.h>
#include "../../library/fileOperations.h"

#define MAXSOCKETS 5
#define DEFAULT_PORT "27052"
#define MAX_BUFFER 500
int error_WSAStartup;
int error_bind;
int error_listen;
int error_shutdown;
int error_getaddrinfo;
int error_recv;
int lineNumber = 0;
int lineNumber2 = 0;
char hold[5];



int main (int argc, char **argv)
{
/**********VAR PHASE********************************/

  WSADATA info_WSADATA;
  SOCKET listenSocket = INVALID_SOCKET;
  SOCKET clientSocket[MAXSOCKETS];


  struct addrinfo *result = NULL;
  struct sockaddr_in address_listenSocket;
  struct sockaddr_in serverAddress;
  struct fd_set clientSocketSet[MAXSOCKETS];
  struct fd_set listenSocketSet;
  struct timeval maxTime;

  char send_buffer[MAX_BUFFER] = "Connection Established";
  char recv_buffer[MAX_BUFFER];
  char hold[10];

  int sendResult;
  int recv_bufferLen = MAX_BUFFER;
  int clientConnected = 0;
  
  serverAddress.sin_addr.s_addr = INADDR_ANY;
  serverAddress.sin_family = AF_INET;
  serverAddress.sin_port = htons(10023);


/****** Work Phase ***********************************/

  maxTime.tv_sec = 2;
  maxTime.tv_usec = 0;
  



  error_WSAStartup = WSAStartup(MAKEWORD(2,2), &info_WSADATA);
  if(error_WSAStartup != 0)
    {
      printf("WSAStartup Failed: %d\n",error_WSAStartup);
      exit(0);
    }
  


  listenSocket = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
  if(listenSocket == INVALID_SOCKET)
    {
      printf("Error at socket(): %ld\n", WSAGetLastError());
      freeaddrinfo(result);
      WSACleanup();        
      exit(0);
    }
  


  error_bind = bind(listenSocket,(LPSOCKADDR)&serverAddress,sizeof(serverAddress));
  if(error_bind == SOCKET_ERROR)
    {
      printf("bind failed: %d\n", WSAGetLastError());
      freeaddrinfo(result);
      closesocket(listenSocket);
      WSACleanup();
      exit(0);
    }

  
  
  error_listen = listen(listenSocket,SOMAXCONN);
  if(error_listen == SOCKET_ERROR)
    {
      printf("Listen Failed: %d\n", WSAGetLastError());
      closesocket(listenSocket);
      WSACleanup();
      exit(0);
    }

/*EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
                          MAIN WHILE
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE*/ 
  int selectReturn = 0;
  while(1)
    {

/*|||||||||||||||||||||||||||START SELECT LISTEN PHASE ||||||||||||||||||||||||*/
      FD_ZERO(&listenSocketSet);
      FD_SET(1,&listenSocketSet);
      listenSocketSet.fd_array[0] = listenSocket;
      
      
      selectReturn = select(FD_SETSIZE,&listenSocketSet,NULL,NULL,&maxTime);
      printf("listen Select\n");
      if(selectReturn == SOCKET_ERROR)
        {
          printf("select listen failed: %d\n",WSAGetLastError());
          printf("selectReturn: %d\n",selectReturn);
          closesocket(listenSocket);
          WSACleanup();
          exit(0);
        }
      else
        {
          if(selectReturn == 1)
            {
                clientSocket[clientConnected] = accept(listenSocket,NULL,NULL);
                clientConnected = clientConnected + 1;
                if(clientSocket[clientConnected-1] == INVALID_SOCKET)
                  {
                    printf("Accept Failed: %d\n",WSAGetLastError());
                    closesocket(listenSocket);
                    clientConnected = clientConnected - 1;
                  }
                sendResult = send(clientSocket[clientConnected-1],send_buffer,strlen(send_buffer)+1,0);
                if(sendResult == SOCKET_ERROR)
                  {
                    printf("send failed: %d\n",WSAGetLastError());
                    closesocket(clientSocket[clientConnected-1]);
                    clientConnected = clientConnected - 1;
                  }
            }
        }
/*|||||||||||||||||||||||||||END SELECT LISTEN PHASE ||||||||||||||||||||||||*/


/*|||||||||||||||||||||||||||START SELECT CONNECTION PHASE ||||||||||||||||||||||||*/
      if(clientConnected > 0)
        {


          lineNumber = 0;
          while(lineNumber < clientConnected)
            {
              lineNumber2 = 0;
              while(lineNumber2 < clientConnected)
                {
                  FD_ZERO(&clientSocketSet[lineNumber2]);
                  FD_SET(1,&clientSocketSet[lineNumber2]);
                  clientSocketSet[lineNumber2].fd_array[lineNumber2] = clientSocket[lineNumber2];
                  lineNumber2++;
                }
          
              selectReturn = 0;
              selectReturn = select(FD_SETSIZE,&clientSocketSet[lineNumber],NULL,NULL,&maxTime);
              printf("Connection Select %d\n",lineNumber);
              if(selectReturn == SOCKET_ERROR)
                {
                  printf("select connection Failed: %d\n",WSAGetLastError());
                  printf("selectReturn: %d\n",selectReturn);
                  closesocket(clientSocket[lineNumber]);
                  clientConnected = clientConnected - 1;
                }
              else
                {
                  if(selectReturn == 1)
                    {
                      error_recv = recv(clientSocket[lineNumber],recv_buffer,MAX_BUFFER,0);
                      if(error_recv  == SOCKET_ERROR)
                        {
                          printf("Recive Failed: %d\n",WSAGetLastError());
                          closesocket(clientSocket[lineNumber]);
                          clientConnected = clientConnected - 1;
                        }
                      printf("%s\n",recv_buffer);
                    }
                }
              lineNumber++;
            }
        }
    }
/*|||||||||||||||||||||||||||END SELECT CONNECTION PHASE ||||||||||||||||||||||||*/

/*EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
                        END  MAIN WHILE
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE*/
 
}