// Token: 0x0600014F RID: 335 RVA: 0x00008054 File Offset: 0x00006254
private void HandleCancellation(AsyncResult <ImapConnectionContext, ImapResultData> curOp)
{
ImapNetworkFacade.CountCommand(curOp, false);
this.Log.Error("networkFacade operation cancelled. Dropped connection.", new object[0]);
Exception canceledException = AsyncOperationResult <ImapResultData> .CanceledException;
curOp.ProcessCompleted(new ImapConnectionException(string.Empty, RetryPolicy.Backoff, canceledException));
}
// Token: 0x06000134 RID: 308 RVA: 0x00006C24 File Offset: 0x00004E24
public IAsyncResult BeginCommand(ImapCommand command, bool processResponse, ImapConnectionContext imapConnectionContext, AsyncCallback callback, object callbackState)
{
base.CheckDisposed();
byte[] array = command.ToBytes();
this.currentResponse.Reset(command);
this.currentCommand = command;
AsyncResult <ImapConnectionContext, ImapResultData> asyncResult = new AsyncResult <ImapConnectionContext, ImapResultData>(this, imapConnectionContext, callback, callbackState);
asyncResult.State.TimeSent = ExDateTime.MinValue;
if (this.cancellationRequested)
{
asyncResult.SetCompletedSynchronously();
this.HandleCancellation(asyncResult);
return(asyncResult);
}
if (this.isNetworkConnectionShutdown)
{
asyncResult.SetCompletedSynchronously();
ImapNetworkFacade.HandleError(ImapNetworkFacade.GetConnectionClosedException(), asyncResult);
return(asyncResult);
}
this.totalBytesSent += (long)array.Length;
if (this.totalBytesSent > this.connectionParameters.MaxBytesToTransfer)
{
asyncResult.SetCompletedSynchronously();
ImapNetworkFacade.HandleError(ImapNetworkFacade.MaxBytesSentExceeded(), asyncResult);
return(asyncResult);
}
if (processResponse && this.totalBytesReceived > this.connectionParameters.MaxBytesToTransfer)
{
asyncResult.State.Log.Debug("Not sending {0}, since we've exceeded our received-bytes threshold.", new object[]
{
this.currentCommand.ToPiiCleanString()
});
asyncResult.SetCompletedSynchronously();
ImapNetworkFacade.HandleError(ImapNetworkFacade.MaxBytesReceivedExceeded(), asyncResult);
return(asyncResult);
}
asyncResult.State.Log.Info("IMAP Send command: [{0}]", new object[]
{
this.currentCommand.ToPiiCleanString()
});
DownloadCompleteEventArgs eventArgs = new DownloadCompleteEventArgs(0L, (long)array.Length);
imapConnectionContext.ActivatePerfDownloadEvent(imapConnectionContext, eventArgs);
if (processResponse)
{
asyncResult.PendingAsyncResult = this.networkConnection.BeginWrite(array, 0, array.Length, new AsyncCallback(this.OnEndWriteCommandOrLiteralBeginReadResponse), asyncResult);
}
else
{
asyncResult.PendingAsyncResult = this.networkConnection.BeginWrite(array, 0, array.Length, new AsyncCallback(this.OnEndSendCommandIgnoreResponse), asyncResult);
asyncResult.SetCompletedSynchronously();
this.currentResultData.Clear();
asyncResult.ProcessCompleted(this.currentResultData);
}
return(asyncResult);
}
// Token: 0x06000146 RID: 326 RVA: 0x000074DC File Offset: 0x000056DC
private void OnEndConnectNegotiateTlsAsClientInternalReadResponse(IAsyncResult asyncResult)
{
lock (this.syncRoot)
{
if (this.ShouldCancelCallback())
{
NetworkConnection networkConnection = this.ExtractNetworkConnectionFrom(asyncResult);
object obj2;
networkConnection.EndNegotiateTlsAsClient(asyncResult, out obj2);
}
else
{
base.CheckDisposed();
AsyncResult <ImapConnectionContext, ImapResultData> asyncResult2 = (AsyncResult <ImapConnectionContext, ImapResultData>)asyncResult.AsyncState;
ImapConnectionContext state = asyncResult2.State;
object obj2;
this.networkConnection.EndNegotiateTlsAsClient(asyncResult, out obj2);
if (obj2 != null)
{
ImapNetworkFacade.HandleError(obj2, asyncResult2);
}
else if (this.cancellationRequested)
{
this.HandleCancellation(asyncResult2);
}
else
{
ExTraceGlobals.FaultInjectionTracer.TraceTest(3211144509U);
switch (state.ImapSecurityMechanism)
{
case ImapSecurityMechanism.Ssl:
this.currentResponse.Reset(null);
asyncResult2.PendingAsyncResult = this.BeginNetworkRead(asyncResult2, new AsyncCallback(this.OnReadAndDiscardLine));
break;
case ImapSecurityMechanism.Tls:
asyncResult2.ProcessCompleted();
break;
default:
throw new InvalidOperationException("Invalid security mechanism");
}
}
}
}
}
// Token: 0x0600012F RID: 303 RVA: 0x00006AF8 File Offset: 0x00004CF8
public IAsyncResult BeginConnect(ImapConnectionContext imapConnectionContext, AsyncCallback callback, object callbackState)
{
base.CheckDisposed();
this.ResetStateForConnectIfNecessary();
this.socket = SocketFactory.CreateTcpStreamSocket();
AsyncResult <ImapConnectionContext, ImapResultData> asyncResult = new AsyncResult <ImapConnectionContext, ImapResultData>(this, imapConnectionContext, callback, callbackState);
try
{
asyncResult.PendingAsyncResult = this.socket.BeginConnect(this.serverParameters.Server, this.serverParameters.Port, new AsyncCallback(this.OnEndConnectInternalReadResponse), asyncResult);
}
catch (SocketException errorCode)
{
this.socket = null;
ImapNetworkFacade.HandleError(errorCode, asyncResult);
}
return(asyncResult);
}
// Token: 0x06000149 RID: 329 RVA: 0x00007998 File Offset: 0x00005B98
private void OnEndWriteCommandOrLiteralBeginReadResponse(IAsyncResult asyncResult)
{
lock (this.syncRoot)
{
if (this.ShouldCancelCallback())
{
NetworkConnection networkConnection = this.ExtractNetworkConnectionFrom(asyncResult);
object obj2;
networkConnection.EndWrite(asyncResult, out obj2);
}
else
{
base.CheckDisposed();
AsyncResult <ImapConnectionContext, ImapResultData> asyncResult2 = (AsyncResult <ImapConnectionContext, ImapResultData>)asyncResult.AsyncState;
object obj2;
this.networkConnection.EndWrite(asyncResult, out obj2);
if (obj2 != null)
{
ImapNetworkFacade.HandleError(obj2, asyncResult2);
}
else if (this.cancellationRequested)
{
this.HandleCancellation(asyncResult2);
}
else
{
ExTraceGlobals.FaultInjectionTracer.TraceTest(2942709053U);
asyncResult2.State.Log.Debug("Command/literal sent, begin reading response.", new object[0]);
this.currentResponse.Reset(this.currentCommand);
this.currentResultData.Clear();
asyncResult2.State.TimeSent = ExDateTime.UtcNow;
asyncResult2.PendingAsyncResult = this.BeginNetworkRead(asyncResult2, new AsyncCallback(this.OnReadMoreResponse));
}
}
}
}
// Token: 0x06000148 RID: 328 RVA: 0x0000786C File Offset: 0x00005A6C
private void OnEndWriteLiteral(IAsyncResult asyncResult)
{
lock (this.syncRoot)
{
if (this.ShouldCancelCallback())
{
NetworkConnection networkConnection = this.ExtractNetworkConnectionFrom(asyncResult);
object obj2;
networkConnection.EndWrite(asyncResult, out obj2);
}
else
{
base.CheckDisposed();
AsyncResult <ImapConnectionContext, ImapResultData> asyncResult2 = (AsyncResult <ImapConnectionContext, ImapResultData>)asyncResult.AsyncState;
object obj2;
this.networkConnection.EndWrite(asyncResult, out obj2);
if (obj2 != null)
{
ImapNetworkFacade.HandleError(obj2, asyncResult2);
}
else if (this.cancellationRequested)
{
this.HandleCancellation(asyncResult2);
}
else
{
ExTraceGlobals.FaultInjectionTracer.TraceTest(3748015421U);
this.totalBytesSent += (long)ImapNetworkFacade.BytesCrLf.Length;
DownloadCompleteEventArgs eventArgs = new DownloadCompleteEventArgs(0L, (long)ImapNetworkFacade.BytesCrLf.Length);
asyncResult2.State.ActivatePerfDownloadEvent(asyncResult2.State, eventArgs);
asyncResult2.State.Log.Debug("Literal sent, sending CRLF to complete it.", new object[0]);
asyncResult2.PendingAsyncResult = this.networkConnection.BeginWrite(ImapNetworkFacade.BytesCrLf, 0, ImapNetworkFacade.BytesCrLf.Length, new AsyncCallback(this.OnEndWriteCommandOrLiteralBeginReadResponse), asyncResult2);
}
}
}
}
// Token: 0x0600014A RID: 330 RVA: 0x00007AA4 File Offset: 0x00005CA4
private void OnReadMoreResponse(IAsyncResult asyncResult)
{
lock (this.syncRoot)
{
if (this.ShouldCancelCallback())
{
NetworkConnection networkConnection = this.ExtractNetworkConnectionFrom(asyncResult);
byte[] data;
int offset;
int num;
object obj2;
networkConnection.EndRead(asyncResult, out data, out offset, out num, out obj2);
}
else
{
base.CheckDisposed();
AsyncResult <ImapConnectionContext, ImapResultData> asyncResult2 = (AsyncResult <ImapConnectionContext, ImapResultData>)asyncResult.AsyncState;
ImapResponse imapResponse = this.currentResponse;
byte[] data;
int offset;
int num;
object obj2;
this.networkConnection.EndRead(asyncResult, out data, out offset, out num, out obj2);
if (obj2 != null)
{
ImapNetworkFacade.HandleError(obj2, asyncResult2);
}
else if (this.cancellationRequested)
{
this.HandleCancellation(asyncResult2);
}
else
{
ExTraceGlobals.FaultInjectionTracer.TraceTest(2674273597U);
this.totalBytesReceived += (long)num;
DownloadCompleteEventArgs eventArgs = new DownloadCompleteEventArgs((long)num, 0L);
asyncResult2.State.ActivatePerfDownloadEvent(asyncResult2.State, eventArgs);
if (this.totalBytesReceived > this.connectionParameters.MaxBytesToTransfer)
{
ImapNetworkFacade.HandleError(ImapNetworkFacade.MaxBytesReceivedExceeded(), asyncResult2);
}
else
{
int num2 = imapResponse.AddData(data, offset, num);
int num3 = num - num2;
this.Log.Assert(num3 >= 0, "The unconsumed bytes must be non-negative.", new object[0]);
if (num3 > 0)
{
this.networkConnection.PutBackReceivedBytes(num3);
}
if (imapResponse.IsComplete)
{
ImapNetworkFacade.CountCommand(asyncResult2, true);
asyncResult2.State.Log.Debug("Command complete: [{0}]. Status = {1}", new object[]
{
this.currentCommand.ToPiiCleanString(),
imapResponse.Status
});
this.currentResultData.Status = imapResponse.Status;
if (asyncResult.CompletedSynchronously)
{
asyncResult2.SetCompletedSynchronously();
}
if (imapResponse.Status == ImapStatus.No || imapResponse.Status == ImapStatus.Bad || imapResponse.Status == ImapStatus.Bye)
{
this.LogFailureDetails(this.currentCommand, imapResponse);
asyncResult2.ProcessCompleted(this.currentResultData);
}
else if (imapResponse.Status != ImapStatus.Ok)
{
this.LogFailureDetails(this.currentCommand, imapResponse);
asyncResult2.ProcessCompleted(this.BuildAndLogUnknownCommandFailureException(asyncResult2.State));
}
else
{
if (!imapResponse.TryParseIntoResult(this.currentCommand, ref this.currentResultData))
{
if (this.currentResultData.FailureException == null)
{
if (this.currentResultData.MessageStream != null)
{
this.totalMessagesReceived += 1UL;
}
asyncResult2.ProcessCompleted(this.currentResultData, this.BuildAndLogUnknownParseFailureException(asyncResult2.State));
return;
}
ImapUtilities.LogExceptionDetails(asyncResult2.State.Log, this.currentCommand, this.currentResultData.FailureException);
this.LogFailureDetails(this.currentCommand, this.currentResponse);
}
else
{
asyncResult2.State.Log.Debug("Parsed server response succesfully.", new object[0]);
}
asyncResult2.ProcessCompleted(this.currentResultData);
}
}
else if (imapResponse.IsWaitingForLiteral)
{
Exception ex = null;
Stream commandParameterStream = this.currentCommand.GetCommandParameterStream(this.serverParameters.Server, imapResponse.GetLastResponseLine(), out ex);
if (ex != null)
{
if (commandParameterStream != null)
{
commandParameterStream.Close();
}
ImapNetworkFacade.CountCommand(asyncResult2, false);
asyncResult2.ProcessCompleted(ex);
}
else if (commandParameterStream == null)
{
ImapNetworkFacade.CountCommand(asyncResult2, false);
asyncResult2.ProcessCompleted(this.BuildAndLogUnexpectedLiteralRequestException(asyncResult2.State));
}
else
{
this.totalBytesSent += commandParameterStream.Length;
if (this.totalBytesSent > this.connectionParameters.MaxBytesToTransfer)
{
ImapNetworkFacade.HandleError(ImapNetworkFacade.MaxBytesSentExceeded(), asyncResult2);
}
else
{
eventArgs = new DownloadCompleteEventArgs(0L, commandParameterStream.Length);
asyncResult2.State.ActivatePerfDownloadEvent(asyncResult2.State, eventArgs);
asyncResult2.State.Log.Debug("Begin writing literal stream.", new object[0]);
asyncResult2.PendingAsyncResult = this.networkConnection.BeginWrite(commandParameterStream, new AsyncCallback(this.OnEndWriteLiteral), asyncResult2);
}
}
}
else if (imapResponse.TotalLiteralBytesExpected > 0 && this.totalBytesReceived + (long)imapResponse.LiteralBytesRemaining > this.connectionParameters.MaxBytesToTransfer)
{
this.totalBytesReceived += (long)imapResponse.LiteralBytesRemaining;
ImapNetworkFacade.HandleError(ImapNetworkFacade.MaxBytesReceivedExceeded(), asyncResult2);
}
else
{
asyncResult2.PendingAsyncResult = this.BeginNetworkRead(asyncResult2, new AsyncCallback(this.OnReadMoreResponse));
}
}
}
}
}
}
// Token: 0x06000147 RID: 327 RVA: 0x000075E4 File Offset: 0x000057E4
private void OnReadAndDiscardLine(IAsyncResult asyncResult)
{
lock (this.syncRoot)
{
if (this.ShouldCancelCallback())
{
NetworkConnection networkConnection = this.ExtractNetworkConnectionFrom(asyncResult);
byte[] data;
int offset;
int num;
object obj2;
networkConnection.EndRead(asyncResult, out data, out offset, out num, out obj2);
}
else
{
base.CheckDisposed();
AsyncResult <ImapConnectionContext, ImapResultData> asyncResult2 = (AsyncResult <ImapConnectionContext, ImapResultData>)asyncResult.AsyncState;
ImapResponse imapResponse = this.currentResponse;
byte[] data;
int offset;
int num;
object obj2;
this.networkConnection.EndRead(asyncResult, out data, out offset, out num, out obj2);
if (obj2 != null)
{
ImapNetworkFacade.HandleError(obj2, asyncResult2);
}
else if (this.cancellationRequested)
{
this.HandleCancellation(asyncResult2);
}
else
{
ExTraceGlobals.FaultInjectionTracer.TraceTest(4284886333U);
this.totalBytesReceived += (long)num;
DownloadCompleteEventArgs eventArgs = new DownloadCompleteEventArgs((long)num, 0L);
asyncResult2.State.ActivatePerfDownloadEvent(asyncResult2.State, eventArgs);
if (this.totalBytesReceived > this.connectionParameters.MaxBytesToTransfer)
{
ImapNetworkFacade.HandleError(ImapNetworkFacade.MaxBytesReceivedExceeded(), asyncResult2);
}
else
{
int num2 = imapResponse.AddData(data, offset, num);
int num3 = num - num2;
this.Log.Assert(num3 >= 0, "The unconsumed bytes must be non-negative.", new object[0]);
if (num3 > 0)
{
this.networkConnection.PutBackReceivedBytes(num3);
}
if (imapResponse.IsComplete)
{
this.currentResultData.Clear();
this.currentResultData.Status = imapResponse.Status;
if (asyncResult.CompletedSynchronously)
{
asyncResult2.SetCompletedSynchronously();
}
asyncResult2.State.Log.Assert(this.currentCommand == null, "this.currentCommand is expected to be null", new object[0]);
if (imapResponse.Status == ImapStatus.No || imapResponse.Status == ImapStatus.Bad || imapResponse.Status == ImapStatus.Bye)
{
this.LogFailureDetails("Connecting", imapResponse);
asyncResult2.ProcessCompleted(this.currentResultData);
}
else
{
asyncResult2.State.Log.Assert(imapResponse.ResponseLines != null && imapResponse.ResponseLines.Count > 0, "ResponseLines was null or had no content", new object[0]);
if (imapResponse.Status != ImapStatus.Ok)
{
asyncResult2.ProcessCompleted(this.BuildAndLogUnknownCommandFailureException(asyncResult2.State, "Connecting"));
}
else
{
asyncResult2.ProcessCompleted(this.currentResultData);
}
}
}
else
{
asyncResult2.PendingAsyncResult = this.BeginNetworkRead(asyncResult2, new AsyncCallback(this.OnReadAndDiscardLine));
}
}
}
}
}
}
// Token: 0x06000141 RID: 321 RVA: 0x00006FEC File Offset: 0x000051EC
private static void HandleError(object errorCode, AsyncResult <ImapConnectionContext, ImapResultData> curOp)
{
ImapNetworkFacade.CountCommand(curOp, false);
if (errorCode is ConnectionsPermanentException || errorCode is ConnectionsTransientException)
{
curOp.State.Log.Error("Exception while communicating: {0}.", new object[]
{
errorCode
});
curOp.ProcessCompleted((Exception)errorCode);
return;
}
ImapNetworkFacade imapNetworkFacade = (ImapNetworkFacade)curOp.State.NetworkFacade;
if (imapNetworkFacade.networkConnection != null)
{
imapNetworkFacade.networkConnection.Shutdown();
imapNetworkFacade.isNetworkConnectionShutdown = true;
}
if (errorCode is SocketError)
{
switch ((SocketError)errorCode)
{
case SocketError.Shutdown:
curOp.State.Log.Error("Network connection shut down: {0}.", new object[]
{
errorCode
});
curOp.ProcessCompleted(ImapNetworkFacade.BuildConnectionShutdownException());
return;
case SocketError.TimedOut:
curOp.State.Log.Error("Operation timed out, shutting down network connection: {0}.", new object[]
{
errorCode
});
curOp.ProcessCompleted(ImapNetworkFacade.BuildTimeoutException());
return;
}
curOp.State.Log.Error("HandleError unhandled SocketError={0}, shutting down network connection.", new object[]
{
((SocketError)errorCode).ToString()
});
curOp.ProcessCompleted(ImapNetworkFacade.BuildUnknownNetworkException());
return;
}
if (errorCode is SecurityStatus)
{
curOp.State.Log.Error("ImapNetworkFacade.HandleError (SecurityStatus={0}), shutting down network connection.", new object[]
{
errorCode
});
LocalizedString value = CXStrings.TlsFailureOccurredError(((SecurityStatus)errorCode).ToString());
TlsFailureException innerException = new TlsFailureException(value);
curOp.ProcessCompleted(new ImapConnectionException(CXStrings.ImapSecurityStatusError, RetryPolicy.Backoff, innerException));
return;
}
curOp.State.Log.Error("HandleError unknown error type (error={0}), shutting down network connection.", new object[]
{
errorCode
});
curOp.ProcessCompleted(ImapNetworkFacade.BuildUnknownNetworkException());
}