#include<iostream>

#include <WinSock2.h>



using namespace std;

void WinConnect(); //open windows connection
int MakeSocket(); //create socket, return descriptor
void ServerSetup(sockaddr_in & , int);

int main()
{
	WinConnect();	
	int sd1 = MakeSocket();
	
	sockaddr_in server;					 // create server struct
	ServerSetup(server,sd1);
	

	listen(sd1,1);   //listen to created socket for connection
	accept(sd1,0,0); //accept connection on socket

	char* buffer = new char[25000];
	recv(sd1,buffer,25000,0);	//get recieved input and put in buffer
	char* reply = new char[25000];
	if (strcmp(buffer, "HELLO SERVER") == 0)
		{
			reply = "HI CLIENT";
			send(sd1,reply,strlen(reply),0);
		}
	else
		{
			reply = "UNKOWN COMMAND";
			send(sd1,reply,strlen(reply),0);
		}

	return 0;
}
void Winopen()
{
	WSADATA w;
	if (WSAStartup(0x0101, &w) != 0)
		{
			cout<< "ERROR: Could Not Open Windows connection."<<endl;
			exit(0);
		}

}
int MakeSocket()
{
int sd;
sd = socket(AF_INET, SOCK_DGRAM, 0);
if (sd == INVALID_SOCKET)
	{
		cout<< "ERROR: Could Not Create Socket."<<endl;
		WSACleanup();
		exit(0);
	}
return sd;
}

void ServerSetup(sockaddr_in & server , int sd)
{
	memset(&server, 0, sizeof(server));  //clears out our server struct

	server.sin_family = AF_INET;		//set server family.. *as socket*
	server.sin_port = htons(1250);				// set server's port number

	//assign server address to 255.255.255.255 
	//later make function to assign automatically using:
	//		gethostname(host_name, sizeof(host_name));
    //		hp = gethostbyname(host_name);
	unsigned char a1 = static_cast<unsigned char> (255);  
	server.sin_addr.S_un.S_un_b.s_b1 = a1;
	server.sin_addr.S_un.S_un_b.s_b2 = a1;
	server.sin_addr.S_un.S_un_b.s_b3 = a1;
	server.sin_addr.S_un.S_un_b.s_b4 = a1;

	//bind server adress to the socket created
	if(bind(sd, (struct sockaddr *)&server, sizeof(struct sockaddr_in)) ==SOCKET_ERROR)
	{
		WSACleanup();
		closesocket(sd);
		exit(0);
	}

}