client.c

#include <stdlib.h>

#include "SocketAddress.h"
#include "Socket.h"
#include "Request.h"
#include "Response.h"
#include "Helpers.h"

int main(int argc, char **argv)
{
    // Storage containers for user inputs
    char *  targetAddress = NULL;
    int     targetPort = DEFAULT_PORT;

    // Extract address/port from user's input
    interpretCommandLine(argc, argv, &targetAddress, &targetPort);

    // Create a TCP socket
    Socket serverSocket = socketCreateFrom(targetAddress, targetPort);

    // Establish the connection
    int connectionResult = socketConnectSimple(serverSocket);
    if (connectionResult < 0) {
        error("failed to connect to server\n");
    }

    // Create request
    Request request = requestCreateEmpty();

    requestAppendTo(&request, "GET / HTTP/1.1");
    requestAppendTo(&request, "Host: wikipedia.org");
    requestFinish(&request);

    // Send request
    requestSendTo(&request, serverSocket);

    // Get response
    Response response = responseGetFrom(serverSocket);

    // Show response
    responsePrintRaw(response);

    // Finish up with the server socket
    socketClose(serverSocket);

    return 0;
}