public void AsyncProcessResponse(IServerResponseChannelSinkStack sinkStack, object state,
IMessage msg, ITransportHeaders headers, Stream stream)
{
// headers, stream are null, because formatting is first sink to create these two
AsyncServerProcessingData asyncData = (AsyncServerProcessingData)state;
try {
IMessage requestMsg = asyncData.RequestMsg;
SerialiseResponse(sinkStack, requestMsg, asyncData.ServerCon, msg,
ref headers, out stream);
}
catch (Exception e) {
if (asyncData.RequestMsg is IMethodCallMessage)
{
msg = new ReturnMessage(e, (IMethodCallMessage)asyncData.RequestMsg);
}
else
{
msg = new ReturnMessage(e, null); // no useful information present for requestMsg
}
// serialise the exception
SerialiseExceptionResponse(sinkStack, (IMessage)state, asyncData.ServerCon, msg,
ref headers, out stream);
}
sinkStack.AsyncProcessResponse(msg, headers, stream); // pass further on to the stream handling sinks
}
/// <summary>
/// process a giop request message.
/// </summary>
private ServerProcessing ProcessRequestMessage(IServerChannelSinkStack sinkStack,
ITransportHeaders requestHeaders,
CdrMessageInputStream msgInput,
GiopServerConnection serverCon,
out IMessage responseMsg, out ITransportHeaders responseHeaders,
out Stream responseStream)
{
IMessage deserReqMsg = null;
responseHeaders = null;
try {
try {
// deserialise the request
deserReqMsg = m_messageHandler.ParseIncomingRequestMessage(msgInput,
serverCon.ConDesc);
} finally {
//request deserialised -> safe to read next request while processing request in servant
// (or sending request deserialisation exception)
try {
serverCon.NotifyDeserialiseRequestComplete();
} catch (Exception ne) {
// unexpected exception. Abort message processing, problem with transport.
throw new NotifyReadRequestException("Problem while trying to inform transport about request deserialistion.",
ne);
}
}
// processing may be done asynchronous, therefore push this sink on the stack to process a response async
AsyncServerProcessingData asyncData =
new AsyncServerProcessingData(deserReqMsg, serverCon);
sinkStack.Push(this, asyncData);
ServerProcessing processingResult;
try {
// forward the call to the next message handling sink
processingResult = m_nextSink.ProcessMessage(sinkStack, deserReqMsg,
requestHeaders, null, out responseMsg,
out responseHeaders, out responseStream);
} catch (Exception) {
sinkStack.Pop(this);
throw;
}
switch (processingResult)
{
case ServerProcessing.Complete:
sinkStack.Pop(this); // not async
// send the response
SerialiseResponse(sinkStack, deserReqMsg, serverCon, responseMsg,
ref responseHeaders, out responseStream);
break;
case ServerProcessing.Async:
sinkStack.Store(this, asyncData); // this sink want's to process async response
break;
case ServerProcessing.OneWay:
// nothing to do, because no response expected
sinkStack.Pop(this);
break;
}
return(processingResult);
} catch (MessageHandling.RequestDeserializationException deserEx) {
// exception from DeserialisRequest
responseMsg = deserEx.ResponseMessage;
// an exception was thrown during deserialization
SerialiseExceptionResponse(sinkStack,
deserEx.RequestMessage, serverCon, responseMsg,
ref responseHeaders, out responseStream);
return(ServerProcessing.Complete);
} catch (NotifyReadRequestException nrre) {
Trace.WriteLine("Failed to inform transport about request deserialisation. Processing problem on server connection after unexpected exception: " + nrre.InnerException);
throw nrre;
} catch (Exception e) {
// serialise an exception response
if (deserReqMsg != null)
{
if (deserReqMsg is IMethodCallMessage)
{
responseMsg = new ReturnMessage(e, (IMethodCallMessage)deserReqMsg);
}
else
{
responseMsg = new ReturnMessage(e, null); // no usable information present
}
SerialiseExceptionResponse(sinkStack,
deserReqMsg, serverCon, responseMsg,
ref responseHeaders, out responseStream);
}
else
{
throw e;
}
return(ServerProcessing.Complete); // send back an error msg
}
}
/// <summary>
/// process a giop request message.
/// </summary>
private ServerProcessing ProcessRequestMessage(IServerChannelSinkStack sinkStack,
ITransportHeaders requestHeaders,
CdrMessageInputStream msgInput,
GiopServerConnection serverCon,
out IMessage responseMsg, out ITransportHeaders responseHeaders,
out Stream responseStream) {
IMessage deserReqMsg = null;
responseHeaders = null;
try {
try {
// deserialise the request
deserReqMsg = m_messageHandler.ParseIncomingRequestMessage(msgInput,
serverCon.ConDesc);
} finally {
//request deserialised -> safe to read next request while processing request in servant
// (or sending request deserialisation exception)
try {
serverCon.NotifyDeserialiseRequestComplete();
} catch (Exception ne) {
// unexpected exception. Abort message processing, problem with transport.
throw new NotifyReadRequestException("Problem while trying to inform transport about request deserialistion.",
ne);
}
}
// processing may be done asynchronous, therefore push this sink on the stack to process a response async
AsyncServerProcessingData asyncData =
new AsyncServerProcessingData(deserReqMsg, serverCon);
sinkStack.Push(this, asyncData);
ServerProcessing processingResult;
try {
// forward the call to the next message handling sink
processingResult = m_nextSink.ProcessMessage(sinkStack, deserReqMsg,
requestHeaders, null, out responseMsg,
out responseHeaders, out responseStream);
} catch (Exception) {
sinkStack.Pop(this);
throw;
}
switch (processingResult) {
case ServerProcessing.Complete:
sinkStack.Pop(this); // not async
// send the response
SerialiseResponse(sinkStack, deserReqMsg, serverCon, responseMsg,
ref responseHeaders, out responseStream);
break;
case ServerProcessing.Async:
sinkStack.Store(this, asyncData); // this sink want's to process async response
break;
case ServerProcessing.OneWay:
// nothing to do, because no response expected
sinkStack.Pop(this);
break;
}
return processingResult;
} catch (MessageHandling.RequestDeserializationException deserEx) {
// exception from DeserialisRequest
responseMsg = deserEx.ResponseMessage;
// an exception was thrown during deserialization
SerialiseExceptionResponse(sinkStack,
deserEx.RequestMessage, serverCon, responseMsg,
ref responseHeaders, out responseStream);
return ServerProcessing.Complete;
} catch (NotifyReadRequestException nrre) {
Trace.WriteLine("Failed to inform transport about request deserialisation. Processing problem on server connection after unexpected exception: " + nrre.InnerException);
throw nrre;
} catch (Exception e) {
// serialise an exception response
if (deserReqMsg != null) {
if (deserReqMsg is IMethodCallMessage) {
responseMsg = new ReturnMessage(e, (IMethodCallMessage) deserReqMsg);
} else {
responseMsg = new ReturnMessage(e, null); // no usable information present
}
SerialiseExceptionResponse(sinkStack,
deserReqMsg, serverCon, responseMsg,
ref responseHeaders, out responseStream);
} else {
throw e;
}
return ServerProcessing.Complete; // send back an error msg
}
}
