internal void SendCommandAsync(string command, AsyncCallback readCallback, DataCommunicator.GetCommandResponseDelegate responseDelegate, object callerArguments)
{
if (this.dataStream == null)
{
return;
}
DataCommunicator.State state = new DataCommunicator.State();
state.ReadDataCallback = readCallback;
state.ResponseDelegate = responseDelegate;
state.CallerArguments = callerArguments;
state.DataStream = this.dataStream;
try
{
this.StartTimer();
byte[] bytes = Encoding.ASCII.GetBytes(command);
this.dataStream.BeginWrite(bytes, 0, bytes.Length, new AsyncCallback(this.SendDataCallback), state);
}
catch (IOException exception)
{
this.HandleException(exception);
}
catch (InvalidOperationException exception2)
{
this.HandleException(exception2);
}
}
private void MultiLineResponseCallback(IAsyncResult asyncResult)
{
DataCommunicator.State state = (DataCommunicator.State)asyncResult.AsyncState;
try
{
int num = state.DataStream.EndRead(asyncResult);
if (num > 0)
{
state.AppendReceivedData(num);
if (!this.LastLineReceived(state.Response))
{
state.BeginRead();
return;
}
}
}
catch (InvalidOperationException exception)
{
if (base.Communicator.HasTimedOut)
{
base.Communicator.HandleException(DataCommunicator.CreateTimeoutException());
return;
}
base.Communicator.HandleException(exception);
}
catch (IOException exception2)
{
base.Communicator.HandleException(exception2);
return;
}
base.Communicator.StopTimer();
state.LaunchResponseDelegate();
}
protected void SingleLineResponseCallback(IAsyncResult asyncResult)
{
DataCommunicator.State state = (DataCommunicator.State)asyncResult.AsyncState;
try
{
int num = state.DataStream.EndRead(asyncResult);
if (num > 0)
{
state.AppendReceivedData(num);
if (!state.Response.EndsWith("\r\n", StringComparison.Ordinal))
{
state.BeginRead();
}
}
this.Communicator.StopTimer();
state.LaunchResponseDelegate();
}
catch (InvalidOperationException exception)
{
if (this.Communicator.HasTimedOut)
{
this.Communicator.HandleException(DataCommunicator.CreateTimeoutException());
}
else
{
this.Communicator.HandleException(exception);
}
}
catch (IOException exception2)
{
this.Communicator.HandleException(exception2);
}
}
private void InitializeSecureStreamAsyncCallback(IAsyncResult asyncResult)
{
DataCommunicator.State state = (DataCommunicator.State)asyncResult.AsyncState;
try
{
SslStream sslStream = (SslStream)state.DataStream;
sslStream.EndAuthenticateAsClient(asyncResult);
if (this.connectionType == ProtocolConnectionType.Ssl)
{
state.BeginRead();
}
else
{
state.LaunchResponseDelegate();
}
}
catch (IOException ex)
{
this.HandleException(new ProtocolException(Strings.ErrorAuthenticationFailed(ex.Message) + Strings.InitializeServerResponse(string.IsNullOrEmpty(state.Response) ? string.Empty : state.Response), ex));
}
catch (InvalidOperationException innerException)
{
this.HandleException(new ProtocolException(Strings.ErrorAuthentication + Strings.InitializeServerResponse(string.IsNullOrEmpty(state.Response) ? string.Empty : state.Response), innerException));
}
catch (AuthenticationException innerException2)
{
this.HandleException(new ProtocolException(Strings.ErrorAuthenticationFailed(this.certificateError) + Strings.InitializeServerResponse(string.IsNullOrEmpty(state.Response) ? string.Empty : state.Response), innerException2));
}
}
private void InitializeSecureStreamAsync(DataCommunicator.State state)
{
if (this.dataStream == null)
{
return;
}
try
{
SslStream sslStream = new SslStream(this.dataStream, false, new RemoteCertificateValidationCallback(this.ValidateServerCertificate), null);
state.DataStream = sslStream;
this.dataStream = sslStream;
this.StartTimer();
sslStream.BeginAuthenticateAsClient(this.serverName, new AsyncCallback(this.InitializeSecureStreamAsyncCallback), state);
}
catch (InvalidOperationException exception)
{
this.HandleException(exception);
}
catch (IOException ex)
{
this.HandleException(new ProtocolException(Strings.ErrorAuthenticationFailed(ex.Message) + Strings.InitializeServerResponse(string.IsNullOrEmpty(state.Response) ? string.Empty : state.Response), ex));
}
catch (AuthenticationException innerException)
{
this.HandleException(new ProtocolException(Strings.ErrorAuthenticationFailed(this.certificateError) + Strings.InitializeServerResponse(string.IsNullOrEmpty(state.Response) ? string.Empty : state.Response), innerException));
}
}
private void ConnectAsyncCallback(IAsyncResult asyncResult)
{
try
{
this.tcpClient.EndConnect(asyncResult);
DataCommunicator.State state = (DataCommunicator.State)asyncResult.AsyncState;
this.dataStream = this.tcpClient.GetStream();
state.DataStream = this.dataStream;
if (this.connectionType == ProtocolConnectionType.Ssl)
{
this.InitializeSecureStreamAsync(state);
}
else
{
this.ReadResponseAsync(state);
}
}
catch (InvalidOperationException exception)
{
this.HandleException(exception);
}
catch (SocketException exception2)
{
this.HandleException(exception2);
}
catch (IOException exception3)
{
this.HandleException(exception3);
}
}
internal void MultiLineResponseCallback(IAsyncResult asyncResult)
{
DataCommunicator.State state = (DataCommunicator.State)asyncResult.AsyncState;
try
{
int num = state.DataStream.EndRead(asyncResult);
if (num > 0)
{
state.AppendReceivedData(num);
if (!PopClient.IsOkResponse(state.Response))
{
if (!state.Response.EndsWith("\r\n", StringComparison.Ordinal))
{
state.ReadDataCallback = new AsyncCallback(base.SingleLineResponseCallback);
state.BeginRead();
return;
}
}
else
{
bool flag = false;
if (!state.Response.EndsWith("\r\n.\r\n", StringComparison.Ordinal))
{
flag = true;
}
if (flag)
{
state.BeginRead();
return;
}
}
}
}
catch (InvalidOperationException exception)
{
if (base.Communicator.HasTimedOut)
{
base.Communicator.HandleException(DataCommunicator.CreateTimeoutException());
return;
}
base.Communicator.HandleException(exception);
}
catch (IOException exception2)
{
base.Communicator.HandleException(exception2);
return;
}
base.Communicator.StopTimer();
state.LaunchResponseDelegate();
}
internal void ReadResponseAsync(AsyncCallback readCallback, DataCommunicator.GetCommandResponseDelegate responseDelegate, object callerArguments)
{
if (this.dataStream == null)
{
return;
}
DataCommunicator.State state = new DataCommunicator.State();
state.ReadDataCallback = readCallback;
state.ResponseDelegate = responseDelegate;
state.CallerArguments = callerArguments;
state.DataStream = this.dataStream;
this.StartTimer();
this.ReadResponseAsync(state);
}
private void ReadResponseAsync(DataCommunicator.State state)
{
try
{
state.BeginRead();
}
catch (InvalidOperationException exception)
{
this.HandleException(exception);
}
catch (IOException exception2)
{
this.HandleException(exception2);
}
}
internal void ConnectAsync(AsyncCallback readCallback, DataCommunicator.GetCommandResponseDelegate responseDelegate, object callerArguments)
{
DataCommunicator.State state = new DataCommunicator.State();
state.ResponseDelegate = responseDelegate;
state.ReadDataCallback = readCallback;
state.CallerArguments = callerArguments;
try
{
this.tcpClient = new TcpClient();
}
catch (SocketException exception)
{
this.HandleException(exception);
}
this.StartTimer();
this.tcpClient.BeginConnect(this.serverName, this.port, new AsyncCallback(this.ConnectAsyncCallback), state);
}
private void SendDataCallback(IAsyncResult asyncResult)
{
DataCommunicator.State state = (DataCommunicator.State)asyncResult.AsyncState;
try
{
state.DataStream.EndWrite(asyncResult);
if (this.dataStream != null)
{
this.ReadResponseAsync(state);
}
}
catch (InvalidOperationException exception)
{
this.HandleException(exception);
}
catch (IOException exception2)
{
this.HandleException(exception2);
}
}