public void DownloadPage()
{
var ipHostInfo = Dns.GetHostEntry(this.Domain);
var ipAddress = ipHostInfo.AddressList[0];
var remoteEp = new IPEndPoint(ipAddress, this.Port);
var socket = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
// connect to the provided target
socket.BeginConnect(remoteEp, ConnectCallback, socket);
_connectDone.WaitOne();
// send the GET request
var request = "GET " + this.Target + " HTTP/1.1\r\n" +
"Host: " + ipAddress + "\r\n" +
"Content-Length: 0\r\n" +
"\r\n";
Console.WriteLine("The request is: " + request);
socket.BeginSend(Encoding.UTF8.GetBytes(request), 0, request.Length, SocketFlags.None, SendCallback, socket);
_sendDone.WaitOne();
// receive the data from the target
var buffer = new byte[2048];
socket.BeginReceive(buffer, 0, buffer.Length, SocketFlags.None, ReceiveCallback, socket);
_receiveDone.WaitOne();
string result = Encoding.UTF8.GetString(buffer, 0, buffer.Length);
HttpResponseParser.parse(result);
Console.WriteLine(result);
}
public async void DownloadPage()
{
var ipHostInfo = Dns.GetHostEntry(this.Domain);
var ipAddress = ipHostInfo.AddressList[0];
var remoteEp = new IPEndPoint(ipAddress, this.Port);
var socket = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
// create a wrapper for the connection information
var state = new StateObject {
workSocket = socket,
hostname = Domain,
endpoint = Target,
remoteEndpoint = remoteEp,
};
// wait for the connection to succeed
await ConnectWrapper(state);
// send the GET request
var request = Utils.GetRequest(Target, Domain);
Console.WriteLine("The request is: " + request);
await SendWrapper(state, request);
// receive the data
await ReceiveWrapper(state);
var response = HttpResponseParser.parse(state.sb.ToString());
Console.WriteLine("Got response with status {0} and header length {1}", response.Status, response.Headers.Count);
socket.Close();
}
private void ReceiveCallback(IAsyncResult asyncResult)
{
try {
StateObject state = (StateObject)asyncResult.AsyncState;
Socket client = state.workSocket;
int bytesRead = client.EndReceive(asyncResult);
if (bytesRead > 0)
{
state.sb.Append(Encoding.ASCII.GetString(state.buffer, 0, bytesRead));
client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, ReceiveCallback, state);
}
else
{
// we have received all the data
var response = HttpResponseParser.parse(state.sb.ToString());
Console.WriteLine("Got response with status {0} and header length {1}", response.Status, response.Headers.Count);
receiveDone.Set();
client.Close();
}
} catch (Exception e) {
Console.WriteLine(e.ToString());
}
}
