private void OnConnectCallback(IAsyncResult iar)
{
try
{
Socket clientSocket = iar.AsyncState as Socket;
clientSocket.EndConnect(iar);
this.m_Socket = clientSocket;
m_IsConnected = true;
//Bắt đầu nhận dữ liệu
ClientAsyncState asyncState = new ClientAsyncState(clientSocket);
clientSocket.BeginReceive(asyncState.Buffer, 0, BufferSize, SocketFlags.None, OnReceiveCallback, asyncState);
//Nem su kien
RaiseConnectionOpenedEvent(new ConnectionOpenedEventArgs {
IsSuccessful = true
});
}
catch
{
RaiseConnectionOpenedEvent(new ConnectionOpenedEventArgs {
IsSuccessful = false
});
}
}
private static string ShortResponseInfo(ClientAsyncState state, Response response)
{
string s = String.Format("{0} bytes from {1} ({2}) in {3}ms: {4}",
response.Data.Length,
state.Server.ToString(),
(state.Client as DnsUdpClient != null ? "UDP" : "TCP"),
response.Timestamp.Subtract(state.Request.Timestamp).TotalMilliseconds,
response.Header.RCODE.ToString()
);
if (response.Header.AA)
{
s += " (authoritative)";
}
return(s);
}
private void OnReceiveCallback(IAsyncResult iar)
{
ClientAsyncState asyncState = iar.AsyncState as ClientAsyncState;
Socket clientSocket = asyncState.ClientSocket;
int readCount = clientSocket.EndReceive(iar);
TcpHeaderFactory headerFactory = asyncState.HeaderFactory;
headerFactory.PumpData(asyncState.Buffer, 0, readCount);
string message;
while (headerFactory.TryProcess(out message))
{
OnReceiveMessage(message);
}
clientSocket.BeginReceive(asyncState.Buffer, 0, BufferSize, SocketFlags.None, OnReceiveCallback, asyncState);
}
private void OnClientResponseReceived(IAsyncResult asyncResult)
{
try
{
ClientAsyncState state = (ClientAsyncState)asyncResult.AsyncState;
Response response = state.Client.EndProcess(asyncResult);
SetText(labelClientResponse, ShortResponseInfo(state, response));
StringBuilder result = new StringBuilder();
RenderResponse(response, result);
SetText(textBoxClientResponse, result.ToString());
//textBoxClientResponse.Text = result.ToString();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
Cursor = Cursors.Default;
buttonClientSend.Enabled = true;
}
}
private static string ShortResponseInfo(ClientAsyncState state, Response response)
{
string s = String.Format("{0} bytes from {1} ({2}) in {3}ms: {4}",
response.Data.Length,
state.Server.ToString(),
(state.Client as DnsUdpClient != null ? "UDP" : "TCP"),
response.Timestamp.Subtract(state.Request.Timestamp).TotalMilliseconds,
response.Header.RCODE.ToString()
);
if (response.Header.AA)
s += " (authoritative)";
return s;
}
