/// <summary>
/// process a giop locate request message.
/// </summary>
private ServerProcessing ProcessLocateRequestMessage(IServerChannelSinkStack sinkStack,
ITransportHeaders requestHeaders,
CdrMessageInputStream msgInput,
GiopServerConnection serverCon,
out IMessage responseMsg, out ITransportHeaders responseHeaders,
out Stream responseStream)
{
responseHeaders = null;
LocateRequestMessage deserReqMsg =
m_messageHandler.ParseIncomingLocateRequestMessage(msgInput);
// TODO: dummy implementation, don't check yet
LocateReplyMessage response = new LocateReplyMessage(LocateStatus.OBJECT_HERE);
responseMsg = response;
PrepareResponseHeaders(ref responseHeaders, serverCon);
// get the stream into which the message should be serialied from a stream handling
// sink in the stream handling chain
responseStream = GetResponseStreamFor(sinkStack, responseMsg, responseHeaders);
m_messageHandler.SerialiseOutgoingLocateReplyMessage(response, deserReqMsg,
msgInput.Header.Version,
responseStream, serverCon.ConDesc);
return(ServerProcessing.Complete);
}
/// <summary>reads an incoming Giop request-message from the Stream sourceStream</summary>
/// <returns>the .NET request message created from this Giop-message</returns>
internal IMessage ParseIncomingRequestMessage(Stream sourceStream,
GiopConnectionDesc conDesc)
{
CdrMessageInputStream msgInput = new CdrMessageInputStream(sourceStream);
return(ParseIncomingRequestMessage(msgInput, conDesc));
}
/// <summary>reads an incoming Giop reply message from the Message input stream msgInput</summary>
/// <remarks>Precondition: sourceStream contains a Giop reply Msg</remarks>
/// <returns>the .NET reply Msg created from the Giop Reply</returns>
internal IMessage ParseIncomingReplyMessage(CdrMessageInputStream msgInput,
IMethodCallMessage requestMessage,
GiopClientConnectionDesc conDesc)
{
Debug.WriteLine("receive reply message at client side");
CdrInputStream msgBody = msgInput.GetMessageContentReadingStream();
GiopClientRequest request = new GiopClientRequest(requestMessage, conDesc, m_interceptionOptions);
if (request.IsAsyncRequest)
{
try {
// with respec to interception, this is a new request -> call again send_request interception before reply
request.PrepareSecondAscyncInterception();
request.InterceptSendRequest();
} catch (Exception ex) {
request.Reply = new ReturnMessage(ex, requestMessage);
Exception newException = request.InterceptReceiveException(ex);
if (newException == ex)
{
throw;
}
else
{
throw newException; // exeption has been changed by interception point
}
}
}
// deserialize message body
IMessage result = m_ser.DeserialiseReply(msgBody, msgInput.Header.Version, request,
conDesc);
return(result);
}
/// <summary>reads an incoming Giop reply message from the Stream sourceStream</summary>
/// <remarks>Precondition: sourceStream contains a Giop reply Msg</remarks>
/// <returns>the .NET reply Msg created from the Giop Reply</returns>
internal IMessage ParseIncomingReplyMessage(Stream sourceStream,
IMethodCallMessage requestMessage,
GiopClientConnectionDesc conDesc)
{
CdrMessageInputStream msgInput = new CdrMessageInputStream(sourceStream);
return(ParseIncomingReplyMessage(msgInput, requestMessage, conDesc));
}
/// <summary>
/// reads a locate-request message.
/// </summary>
internal LocateRequestMessage ParseIncomingLocateRequestMessage(CdrMessageInputStream msgInput)
{
CdrInputStream msgBody = msgInput.GetMessageContentReadingStream();
// deserialize message body
LocateRequestMessage result = m_ser.DeserialiseLocateRequest(msgBody, msgInput.Header.Version);
Debug.WriteLine("locate request for target-uri: " + result.TargetUri);
return(result);
}
/// <summary>reads an incoming Giop request-message from the message input stream msgInput</summary>
/// <returns>the .NET request message created from this Giop-message</returns>
internal IMessage ParseIncomingRequestMessage(CdrMessageInputStream msgInput,
GiopConnectionDesc conDesc)
{
CdrInputStream msgBody = msgInput.GetMessageContentReadingStream();
// deserialize the message body (the GIOP-request id is included in this message)
return(m_ser.DeserialiseRequest(msgBody, msgInput.Header.Version,
conDesc, m_interceptionOptions));
}
public ServerProcessing ProcessMessage(IServerChannelSinkStack sinkStack, IMessage requestMsg,
ITransportHeaders requestHeaders, Stream requestStream,
out IMessage responseMsg, out ITransportHeaders responseHeaders,
out Stream responseStream)
{
responseMsg = null;
responseHeaders = null;
responseStream = null;
CdrMessageInputStream msgInput = new CdrMessageInputStream(requestStream);
GiopServerConnection serverCon = (GiopServerConnection)
requestHeaders[GiopServerConnection.SERVER_TR_HEADER_KEY];
try {
if (msgInput.Header.GiopType == GiopMsgTypes.Request)
{
return(ProcessRequestMessage(sinkStack, requestHeaders, msgInput, serverCon,
out responseMsg, out responseHeaders, out responseStream));
}
else if (msgInput.Header.GiopType == GiopMsgTypes.LocateRequest)
{
return(ProcessLocateRequestMessage(sinkStack, requestHeaders,
msgInput, serverCon,
out responseMsg, out responseHeaders, out responseStream));
}
else
{
Trace.WriteLine("Processing problem on server connection after unexpected message of type " +
msgInput.Header.GiopType);
throw new NotSupportedException("wrong message type in server side formatter: " +
msgInput.Header.GiopType);
}
} finally {
try {
requestStream.Close(); // not needed any more
} catch {
// ignore
}
}
}
/// <summary>
/// reads a locate-request message.
/// </summary>
internal LocateRequestMessage ParseIncomingLocateRequestMessage(Stream sourceStream)
{
CdrMessageInputStream msgInput = new CdrMessageInputStream(sourceStream);
return(ParseIncomingLocateRequestMessage(msgInput));
}
/// <summary>reads an incoming Giop reply message from the Stream sourceStream</summary>
/// <remarks>Precondition: sourceStream contains a Giop reply Msg</remarks>
/// <returns>the .NET reply Msg created from the Giop Reply</returns>
internal IMessage ParseIncomingReplyMessage(Stream sourceStream,
IMethodCallMessage requestMessage,
GiopClientConnectionDesc conDesc) {
CdrMessageInputStream msgInput = new CdrMessageInputStream(sourceStream);
return ParseIncomingReplyMessage(msgInput, requestMessage, conDesc);
}
/// <summary>
/// reads a locate-request message.
/// </summary>
internal LocateRequestMessage ParseIncomingLocateRequestMessage(CdrMessageInputStream msgInput) {
CdrInputStream msgBody = msgInput.GetMessageContentReadingStream();
// deserialize message body
LocateRequestMessage result = m_ser.DeserialiseLocateRequest(msgBody, msgInput.Header.Version);
Debug.WriteLine("locate request for target-uri: " + result.TargetUri);
return result;
}
/// <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>reads an incoming Giop request-message from the message input stream msgInput</summary>
/// <returns>the .NET request message created from this Giop-message</returns>
internal IMessage ParseIncomingRequestMessage(CdrMessageInputStream msgInput,
GiopConnectionDesc conDesc) {
CdrInputStream msgBody = msgInput.GetMessageContentReadingStream();
// deserialize the message body (the GIOP-request id is included in this message)
return m_ser.DeserialiseRequest(msgBody, msgInput.Header.Version,
conDesc, m_interceptionOptions);
}
/// <summary>
/// reads a locate-request message.
/// </summary>
internal LocateRequestMessage ParseIncomingLocateRequestMessage(Stream sourceStream) {
CdrMessageInputStream msgInput = new CdrMessageInputStream(sourceStream);
return ParseIncomingLocateRequestMessage(msgInput);
}
/// <summary>reads an incoming Giop request-message from the Stream sourceStream</summary>
/// <returns>the .NET request message created from this Giop-message</returns>
internal IMessage ParseIncomingRequestMessage(Stream sourceStream,
GiopConnectionDesc conDesc) {
CdrMessageInputStream msgInput = new CdrMessageInputStream(sourceStream);
return ParseIncomingRequestMessage(msgInput, conDesc);
}
/// <summary>reads an incoming Giop reply message from the Message input stream msgInput</summary>
/// <remarks>Precondition: sourceStream contains a Giop reply Msg</remarks>
/// <returns>the .NET reply Msg created from the Giop Reply</returns>
internal IMessage ParseIncomingReplyMessage(CdrMessageInputStream msgInput,
IMethodCallMessage requestMessage,
GiopClientConnectionDesc conDesc) {
Debug.WriteLine("receive reply message at client side");
CdrInputStream msgBody = msgInput.GetMessageContentReadingStream();
GiopClientRequest request = new GiopClientRequest(requestMessage, conDesc, m_interceptionOptions);
if (request.IsAsyncRequest) {
try {
// with respec to interception, this is a new request -> call again send_request interception before reply
request.PrepareSecondAscyncInterception();
request.InterceptSendRequest();
} catch (Exception ex) {
request.Reply = new ReturnMessage(ex, requestMessage);
Exception newException = request.InterceptReceiveException(ex);
if (newException == ex) {
throw;
} else {
throw newException; // exeption has been changed by interception point
}
}
}
// deserialize message body
IMessage result = m_ser.DeserialiseReply(msgBody, msgInput.Header.Version, request,
conDesc);
return result;
}
/// <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
}
}
public ServerProcessing ProcessMessage(IServerChannelSinkStack sinkStack, IMessage requestMsg,
ITransportHeaders requestHeaders, Stream requestStream,
out IMessage responseMsg, out ITransportHeaders responseHeaders,
out Stream responseStream) {
responseMsg = null;
responseHeaders = null;
responseStream = null;
CdrMessageInputStream msgInput = new CdrMessageInputStream(requestStream);
GiopServerConnection serverCon = (GiopServerConnection)
requestHeaders[GiopServerConnection.SERVER_TR_HEADER_KEY];
try {
if (msgInput.Header.GiopType == GiopMsgTypes.Request) {
return ProcessRequestMessage(sinkStack, requestHeaders, msgInput, serverCon,
out responseMsg, out responseHeaders, out responseStream);
} else if (msgInput.Header.GiopType == GiopMsgTypes.LocateRequest) {
return ProcessLocateRequestMessage(sinkStack, requestHeaders,
msgInput, serverCon,
out responseMsg, out responseHeaders, out responseStream);
} else {
Trace.WriteLine("Processing problem on server connection after unexpected message of type " +
msgInput.Header.GiopType);
throw new NotSupportedException("wrong message type in server side formatter: " +
msgInput.Header.GiopType);
}
} finally {
try {
requestStream.Close(); // not needed any more
} catch {
// ignore
}
}
}
/// <summary>
/// process a giop locate request message.
/// </summary>
private ServerProcessing ProcessLocateRequestMessage(IServerChannelSinkStack sinkStack,
ITransportHeaders requestHeaders,
CdrMessageInputStream msgInput,
GiopServerConnection serverCon,
out IMessage responseMsg, out ITransportHeaders responseHeaders,
out Stream responseStream) {
responseHeaders = null;
LocateRequestMessage deserReqMsg =
m_messageHandler.ParseIncomingLocateRequestMessage(msgInput);
// TODO: dummy implementation, don't check yet
LocateReplyMessage response = new LocateReplyMessage(LocateStatus.OBJECT_HERE);
responseMsg = response;
PrepareResponseHeaders(ref responseHeaders, serverCon);
// get the stream into which the message should be serialied from a stream handling
// sink in the stream handling chain
responseStream = GetResponseStreamFor(sinkStack, responseMsg, responseHeaders);
m_messageHandler.SerialiseOutgoingLocateReplyMessage(response, deserReqMsg,
msgInput.Header.Version,
responseStream, serverCon.ConDesc);
return ServerProcessing.Complete;
}
