public void RecieveFirst()
{
byte[] buffer = new byte[1024 * 1024 * 3];
IAsyncResult receiveResult = connection.BeginReceive(buffer, 0, 4, null, null);
IAsyncResult sendResult = connection.BeginSend(requests.Encode(), 0, requests.ByteLength, null, null);
amountSent = requests.ByteLength;
CompleteSendOrReceiveFirst(buffer, receiveResult, sendResult);
}