Example of HTTP GET request using winsock

getrequest.cpp

#include <iostream>
#include <string>
#include <WS2tcpip.h>

#pragma comment (lib, "ws2_32.lib")

// Example of HTTP GET request using windows sockets
// Author: Maniclout

void getrequest() {
		std::string ipAddress = "www.example.com";
		int port = 80;

		// initialise winsock
		WSADATA data;
		WORD ver = MAKEWORD(2, 2);
		int wsResult = WSAStartup(ver, &data);
		if (wsResult != 0) {
			std::cerr << "Can't start winsock, Err #" << wsResult << std::endl;
			return;
		}

		// create socket
		SOCKET clientSocket = socket(AF_INET, SOCK_STREAM, 0);
		if (clientSocket == INVALID_SOCKET) {
			std::cerr << "Can't create socket, Err #" << WSAGetLastError() << std::endl;
			WSACleanup();
			return;
		}

		// hint structure
		sockaddr_in hint;
		hint.sin_family = AF_INET;
		hint.sin_port = htons(port);
		inet_pton(AF_INET, ipAddress.c_str(), &hint.sin_addr);

		// connect
		int connResult = connect(clientSocket, (sockaddr*)&hint, sizeof(hint));
		if (connResult == SOCKET_ERROR) {
			std::cerr << "Can't connect to server, Err #" << WSAGetLastError << std::endl;
			closesocket(clientSocket);
			WSACleanup();
			return;
		}

		// do while loop to send and receive data
		char buff[4096];

		char cmd[] = "GET /index.html HTTP/1.0\r\nHost: example.com\r\n\r\n";

		int sendResult = send(clientSocket, cmd, sizeof(cmd), 0);

		if (sendResult != SOCKET_ERROR) {
			// wait for response
			ZeroMemory(buff, 4096);
			int bytesReceived = recv(clientSocket, buff, 4096, 0);

			// echo response to console
			if (bytesReceived > 0) {
				std::cout << std::string(buff, 0, bytesReceived) << std::endl;
			}
		}
		closesocket(clientSocket);
		WSACleanup();
		return;
}

int main(){
    getrequest();
	
    std::cin.get();
    return 0;
}