/*

Compiled with VS2010 on Windows 7.

*/


#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdio.h>
#include <stdlib.h>

#pragma comment (lib, "Ws2_32.lib")
#pragma comment (lib, "Mswsock.lib")
#pragma comment (lib, "AdvApi32.lib")


int main()
{
	WSADATA wsaData;
	int result;
	SOCKET client_fd = INVALID_SOCKET;
	struct sockaddr_in server_address;
	unsigned int PORT = 7000;
	const int HTTP_RESPONSE_LEN = 1000;
	char http_response[1000];
	struct timeval period;
	fd_set rfds;

	result = WSAStartup(MAKEWORD(2,2), &wsaData);
	if (result != 0)
	{
		fprintf(stderr, "main(): error calling 'WSAStartup()'");
		WSACleanup();
		exit(EXIT_FAILURE);
	}

	// set the host manually

	server_address.sin_family = AF_INET;
	server_address.sin_port = htons(PORT);
	if (inet_pton(AF_INET, "94.189.255.75", &(server_address.sin_addr)) <= 0)
	{
		fprintf(stderr, "main(): error calling 'inet_pton()'\n");
		WSACleanup();
		exit(EXIT_FAILURE);
	}
	memset(&(server_address.sin_zero), '\0', 8);

	// create socket and connect

	client_fd = socket(PF_INET, SOCK_STREAM, 0);
	if (client_fd == INVALID_SOCKET)
	{
		fprintf(stderr, "main(): cannot create socket\n");
		WSACleanup();
		exit(EXIT_FAILURE);
	}
	
	if (connect(client_fd, (struct sockaddr*)(&server_address), (socklen_t)sizeof(server_address)) == SOCKET_ERROR)
	{
		fprintf(stderr, "main(): cannot connect to server\n");
		WSACleanup();
		exit(EXIT_FAILURE);
	}

	// talk with server
	period.tv_sec = 5;
	period.tv_usec = 0;
	
	FD_ZERO(&rfds);
	FD_SET(client_fd, &rfds);
	result =  select(100, &rfds, NULL, NULL, &period);
	if (result == 0)
		fprintf(stderr, "main(): time expired");
	else
	{
		memset(http_response, '\0', HTTP_RESPONSE_LEN);
		if (recv(client_fd, http_response, HTTP_RESPONSE_LEN - 1, 0) == SOCKET_ERROR)
		{
			fprintf(stderr, "main(): cannot receive response\n");
			WSACleanup();
			exit(EXIT_FAILURE);
		}
		http_response[HTTP_RESPONSE_LEN - 1] = '\0';
		printf("main(): http_response=%s\n", http_response);
	}
	
	closesocket(client_fd);

	WSACleanup();

	return EXIT_SUCCESS;
}