How to continous receive data from socket

[grandong]

I tried to make an application to connect to the messenger server,So far i have this code:

Socket socClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
socClient.Connect(new IPEndPoint(Dns.GetHostEntry(strHost).AddressList[0], intPort));

//combine username and default packet.
byte[] byLoginPhase1 = LoginProcess1(textBox1.Text);
socClient.Send(byLoginPhase1);// send first packet to get respond key

byte[] byBuffer1 = new byte[93];
int intBuff1 = socClient.Receive(byBuffer1);

byte[] byKey = new byte[8];
for (int i = 85; i < byBuffer1.Length; i++)
{
      byKey[i - 85] = byBuffer1[i];
}// cut packet to get only the key

// combine key and password and hashgen it
byte[] byLoginPhase2 = LoginProcess2(byKey, textBox2.Text);
socClient.Send(byLoginPhase2);// send hashgen + default packet

byte[] byBuffer2 = new byte[1024];
int intBuffer2 = socClient.Receive(byBuffer2);

Now i successfully login to server, then the server should send a list of contacts etc, but how i can get them, how i can always receive packet the server send.
thanks