protected override bool ProcessRequest (MessageProcessingContext mrc)
{
Exception ex = mrc.ProcessingException;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
//invoke all user handlers
ChannelDispatcher channelDispatcher = dispatchRuntime.ChannelDispatcher;
foreach (IErrorHandler handler in channelDispatcher.ErrorHandlers)
if (handler.HandleError (ex))
break;
// FIXME: remove them. FaultConverter also covers errors like EndpointNotFoundException, which this handler never covers. And checking converter twice is extraneous, so this part is just extraneous.
// FIXME: actually everything is done in OperationInvokerHandler now...
FaultConverter fc = FaultConverter.GetDefaultFaultConverter (dispatchRuntime.ChannelDispatcher.MessageVersion);
Message res = null;
if (!fc.TryCreateFaultMessage (ex, out res))
throw ex;
mrc.ReplyMessage = res;
if (duplex != null)
mrc.Reply (duplex, true);
else
mrc.Reply (true);
return false;
}
void FinishRequest (MessageProcessingContext mrc)
{
if (mrc.Operation != null && mrc.Operation.ReleaseInstanceAfterCall) {
mrc.InstanceContext.ReleaseServiceInstance ();
}
mrc.InstanceContext.CloseIfIdle ();
}
void DoProcessRequest(MessageProcessingContext mrc)
{
DispatchOperation operation = mrc.Operation;
Message req = mrc.IncomingMessage;
object instance = mrc.InstanceContext.GetServiceInstance(req);
object [] parameters, outParams;
BuildInvokeParams(mrc, out parameters);
if (operation.Invoker.IsSynchronous)
{
object result = operation.Invoker.Invoke(instance, parameters, out outParams);
HandleInvokeResult(mrc, outParams, result);
}
else
{
AsyncCallback callback = delegate {};
// FIXME: the original code passed null callback
// and null state, which is very wrong :(
// It is still wrong to pass dummy callback, but
// wrong code without obvious issues is better
// than code with an obvious issue.
var ar = operation.Invoker.InvokeBegin(instance, parameters, callback, null);
object result = operation.Invoker.InvokeEnd(instance, out outParams, ar);
HandleInvokeResult(mrc, outParams, result);
}
}
void ReplyNegoResponse(MessageProcessingContext mrc, Message negoResponse)
{
negoResponse.Headers.CopyHeadersFrom(mrc.OperationContext.OutgoingMessageHeaders);
negoResponse.Properties.CopyProperties(mrc.OperationContext.OutgoingMessageProperties);
mrc.RequestContext.Reply(negoResponse, mrc.Operation.Parent.ChannelDispatcher.timeouts.SendTimeout);
return;
}
void ReplyNegoResponse (MessageProcessingContext mrc, Message negoResponse)
{
negoResponse.Headers.CopyHeadersFrom (mrc.OperationContext.OutgoingMessageHeaders);
negoResponse.Properties.CopyProperties (mrc.OperationContext.OutgoingMessageProperties);
mrc.RequestContext.Reply (negoResponse, mrc.Operation.Parent.ChannelDispatcher.timeouts.SendTimeout);
return;
}
protected virtual void ProcessRequest(MessageProcessingContext mrc)
{
initialize_handlers_chain.ProcessRequestChain(mrc);
using (new OperationContextScope(mrc.OperationContext))
{
try
{
process_handlers_chain.ProcessRequestChain(mrc);
}
catch (Exception e)
{
// FIXME: this is not really expected use of ChannelDispatcher.ErrorHandlers.
// They are now correctly used in process_handler_chain (namely OperationInvokerHandler).
// For this kind of "outsider" exceptions are actually left thrown
// (and could even cause server loop crash in .NET).
Console.WriteLine("Exception " + e.Message + " " + e.StackTrace);
mrc.ProcessingException = e;
error_handlers_chain.ProcessRequestChain(mrc);
}
finally
{
finalize_handlers_chain.ProcessRequestChain(mrc);
}
}
}
protected override bool ProcessRequest (MessageProcessingContext mrc)
{
DispatchRuntime dispatch_runtime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
// FIXME: I doubt this should be done at this "handler"
// layer, especially considering about non-ServiceHost
// use of SecurityBindingElement + listener.
//
// For example there is no way to handle it in duplex
// dispatch callbacks.
if (dispatch_runtime.ChannelDispatcher == null)
return false;
Message negoResponce = null;
// process WS-Trust based negotiation
MessageSecurityBindingSupport support =
dispatch_runtime.ChannelDispatcher.Listener.GetProperty<MessageSecurityBindingSupport> ();
if (support != null && mrc.IncomingMessage.Headers.FindHeader ("Security", Constants.WssNamespace) < 0) {
CommunicationSecurityTokenAuthenticator nego =
support.TokenAuthenticator as CommunicationSecurityTokenAuthenticator;
if (nego != null)
negoResponce = nego.Communication.ProcessNegotiation (mrc.IncomingMessage);
}
if (negoResponce == null)
return false;
ReplyNegoResponse (mrc, negoResponce);
return true;
}
void HandleInvokeResult(MessageProcessingContext mrc, object [] outputs, object result)
{
DispatchOperation operation = mrc.Operation;
mrc.EventsHandler.AfterInvoke(operation);
if (operation.IsOneWay)
{
return;
}
Message res = null;
if (operation.SerializeReply)
{
res = operation.Formatter.SerializeReply(
mrc.OperationContext.IncomingMessageVersion, outputs, result);
}
else
{
res = (Message)result;
}
res.Headers.CopyHeadersFrom(mrc.OperationContext.OutgoingMessageHeaders);
res.Properties.CopyProperties(mrc.OperationContext.OutgoingMessageProperties);
if (res.Headers.RelatesTo == null)
{
res.Headers.RelatesTo = mrc.OperationContext.IncomingMessageHeaders.MessageId;
}
mrc.ReplyMessage = res;
}
Message BuildExceptionMessage (MessageProcessingContext mrc, Exception ex, bool includeDetailsInFault)
{
var dr = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
var cd = dr.ChannelDispatcher;
Message msg = null;
foreach (var eh in cd.ErrorHandlers)
eh.ProvideFault (ex, cd.MessageVersion, ref msg);
if (msg != null)
return msg;
var req = mrc.IncomingMessage;
// FIXME: set correct name
FaultCode fc = new FaultCode (
"InternalServiceFault",
req.Version.Addressing.Namespace);
if (includeDetailsInFault) {
return Message.CreateMessage (req.Version, fc, ex.Message, new ExceptionDetail (ex), req.Headers.Action);
}
string faultString =
@"The server was unable to process the request due to an internal error. The server may be able to return exception details (it depends on the server settings).";
return Message.CreateMessage (req.Version, fc, faultString, req.Headers.Action);
}
public void ProcessRequestChain(MessageProcessingContext mrc)
{
if (chain != null)
{
chain.ProcessRequestChain(mrc);
}
}
public virtual void ProcessRequestChain(MessageProcessingContext mrc)
{
if (!ProcessRequest(mrc) && next != null)
{
next.ProcessRequestChain(mrc);
}
}
void Reply (MessageProcessingContext mrc, bool useTimeout)
{
if (duplex != null)
mrc.Reply (duplex, useTimeout);
else
mrc.Reply (useTimeout);
}
InstanceContext CreateInstanceContext(MessageProcessingContext mrc)
{
InstanceContext iCtx = null;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
IInstanceContextProvider p = dispatchRuntime.InstanceContextProvider;
if (p != null)
{
iCtx = p.GetExistingInstanceContext(mrc.IncomingMessage, mrc.OperationContext.Channel);
}
if (iCtx == null)
{
ServiceHostBase host = dispatchRuntime.ChannelDispatcher.Host;
iCtx = new InstanceContext(dispatchRuntime.ChannelDispatcher.Host, null, false);
// FIXME: could be easier way to identify session channel
if ((mrc.Channel is ISessionChannel <IInputSession> || mrc.Channel is ISessionChannel <IDuplexSession>) && host.Description.Behaviors.Find <ServiceBehaviorAttribute> ().InstanceContextMode == InstanceContextMode.PerSession)
{
mrc.Channel.Closed += delegate { iCtx.Close(); }
}
;
}
iCtx.InstanceManager = new InstanceManager(dispatchRuntime);
return(iCtx);
}
}
protected override bool ProcessRequest(MessageProcessingContext mrc)
{
Exception ex = mrc.ProcessingException;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
//invoke all user handlers
ChannelDispatcher channelDispatcher = dispatchRuntime.ChannelDispatcher;
foreach (IErrorHandler handler in channelDispatcher.ErrorHandlers)
{
if (handler.HandleError(ex))
{
break;
}
}
FaultConverter fc = FaultConverter.GetDefaultFaultConverter(dispatchRuntime.ChannelDispatcher.MessageVersion);
Message res = null;
if (!fc.TryCreateFaultMessage(ex, out res))
{
throw ex;
}
mrc.ReplyMessage = res;
if (duplex != null)
{
mrc.Reply(duplex, true);
}
else
{
mrc.Reply(true);
}
return(false);
}
protected override bool ProcessRequest(MessageProcessingContext mrc)
{
RequestContext rc = mrc.RequestContext;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
DispatchOperation operation = GetOperation(mrc.IncomingMessage, dispatchRuntime);
mrc.Operation = operation;
try
{
DoProcessRequest(mrc);
if (!mrc.Operation.IsOneWay)
{
Reply(mrc, true);
}
}
catch (TargetInvocationException ex)
{
mrc.ReplyMessage = BuildExceptionMessage(mrc, ex.InnerException,
dispatchRuntime.ChannelDispatcher.IncludeExceptionDetailInFaults);
if (!mrc.Operation.IsOneWay)
{
Reply(mrc, true);
}
ProcessCustomErrorHandlers(mrc, ex);
}
return(false);
}
protected override bool ProcessRequest (MessageProcessingContext mrc)
{
InstanceContext ictx = CreateInstanceContext (mrc);
mrc.InstanceContext = ictx;
mrc.OperationContext.InstanceContext = ictx;
return false;
}
public UserEventsHandler(MessageProcessingContext mrc)
{
request_context = mrc;
dispatch_runtime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
msg_inspectors_states = new object [dispatch_runtime.MessageInspectors.Count];
channel = request_context.OperationContext.Channel as IClientChannel;
}
void FinishRequest (MessageProcessingContext mrc)
{
if (mrc.Operation != null && mrc.Operation.IsTerminating && mrc.OperationContext.Channel.InputSession != null)
mrc.OperationContext.Channel.Close (); // FIXME: timeout?
if (mrc.Operation != null && mrc.Operation.ReleaseInstanceAfterCall)
mrc.InstanceContext.ReleaseServiceInstance ();
mrc.InstanceContext.CloseIfIdle ();
}
void FinishRequest(MessageProcessingContext mrc)
{
if (mrc.Operation != null && mrc.Operation.ReleaseInstanceAfterCall)
{
mrc.InstanceContext.ReleaseServiceInstance();
}
mrc.InstanceContext.CloseIfIdle();
}
protected override bool ProcessRequest(MessageProcessingContext mrc)
{
InstanceContext ictx = CreateInstanceContext(mrc);
mrc.InstanceContext = ictx;
mrc.OperationContext.InstanceContext = ictx;
return(false);
}
protected override bool ProcessRequest (MessageProcessingContext mrc)
{
Message incomingMessage = mrc.IncomingMessage;
EnsureInstanceContextOpen (mrc.InstanceContext);
AfterReceiveRequest (ref incomingMessage, mrc);
mrc.IncomingMessage = incomingMessage;
return false;
}
void ProcessCustomErrorHandlers (MessageProcessingContext mrc, Exception ex)
{
var dr = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
bool shutdown = false;
foreach (var eh in dr.ChannelDispatcher.ErrorHandlers)
shutdown |= eh.HandleError (ex);
if (shutdown)
ProcessSessionErrorShutdown (mrc);
}
protected override bool ProcessRequest(MessageProcessingContext mrc)
{
Message incomingMessage = mrc.IncomingMessage;
EnsureInstanceContextOpen(mrc.InstanceContext);
AfterReceiveRequest(ref incomingMessage, mrc);
mrc.IncomingMessage = incomingMessage;
return(false);
}
void ProcessSessionErrorShutdown (MessageProcessingContext mrc)
{
var dr = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
var session = mrc.OperationContext.Channel.InputSession;
var dcc = mrc.OperationContext.Channel as IDuplexContextChannel;
if (session == null || dcc == null)
return;
foreach (var h in dr.InputSessionShutdownHandlers)
h.ChannelFaulted (dcc);
}
void FinishRequest(MessageProcessingContext mrc)
{
if (mrc.Operation != null && mrc.Operation.IsTerminating && mrc.OperationContext.Channel.InputSession != null)
{
mrc.OperationContext.Channel.Close(); // FIXME: timeout?
}
if (mrc.Operation != null && mrc.Operation.ReleaseInstanceAfterCall)
{
mrc.InstanceContext.ReleaseServiceInstance();
}
mrc.InstanceContext.CloseIfIdle();
}
void BuildInvokeParams (MessageProcessingContext mrc, out object [] parameters)
{
DispatchOperation operation = mrc.Operation;
EnsureValid (operation);
if (operation.DeserializeRequest) {
parameters = operation.Invoker.AllocateInputs ();
operation.Formatter.DeserializeRequest (mrc.IncomingMessage, parameters);
} else
parameters = new object [] { mrc.IncomingMessage };
mrc.EventsHandler.BeforeInvoke (operation);
}
protected virtual void ProcessRequest (MessageProcessingContext mrc)
{
initialize_handlers_chain.ProcessRequestChain (mrc);
using (new OperationContextScope (mrc.OperationContext)) {
try {
process_handlers_chain.ProcessRequestChain (mrc);
} catch (IOException e) {
// FIXME?: On dropped connection do not
// dump a stacktrace, but should be safe
// to dump a console message as in
// default exception handler and
// call error_handlers_chain
Console.WriteLine ("I/O Error (Dropped Connection?): " + e.Message);
mrc.ProcessingException = e;
error_handlers_chain.ProcessRequestChain (mrc);
} catch (SocketException e) {
// FIXME?: On dropped connection do not
// dump a stacktrace, but should be safe
// to dump a console message as in
// default exception handler and
// call error_handlers_chain
Console.WriteLine ("SocketExcpetion (Dropped Connection?): " + e.Message);
mrc.ProcessingException = e;
error_handlers_chain.ProcessRequestChain (mrc);
} catch (XmlException e) {
// FIXME?: On dropped connection do not
// dump a stacktrace, but should be safe
// to dump a console message as in
// default exception handler and
// call error_handlers_chain
Console.WriteLine ("XmlException (Dropped Connection?): " + e.Message);
mrc.ProcessingException = e;
error_handlers_chain.ProcessRequestChain (mrc);
} catch (Exception e) {
// FIXME: this is not really expected use of ChannelDispatcher.ErrorHandlers.
// They are now correctly used in process_handler_chain (namely OperationInvokerHandler).
// For this kind of "outsider" exceptions are actually left thrown
// (and could even cause server loop crash in .NET).
Console.WriteLine ("Exception " + e.Message + " " + e.StackTrace);
mrc.ProcessingException = e;
error_handlers_chain.ProcessRequestChain (mrc);
}
finally {
finalize_handlers_chain.ProcessRequestChain (mrc);
}
}
}
protected virtual void ProcessRequest(MessageProcessingContext mrc)
{
initialize_handlers_chain.ProcessRequestChain(mrc);
using (new OperationContextScope(mrc.OperationContext)) {
try {
process_handlers_chain.ProcessRequestChain(mrc);
} catch (IOException e) {
// FIXME?: On dropped connection do not
// dump a stacktrace, but should be safe
// to dump a console message as in
// default exception handler and
// call error_handlers_chain
Console.WriteLine("I/O Error (Dropped Connection?): " + e.Message);
mrc.ProcessingException = e;
error_handlers_chain.ProcessRequestChain(mrc);
} catch (SocketException e) {
// FIXME?: On dropped connection do not
// dump a stacktrace, but should be safe
// to dump a console message as in
// default exception handler and
// call error_handlers_chain
Console.WriteLine("SocketExcpetion (Dropped Connection?): " + e.Message);
mrc.ProcessingException = e;
error_handlers_chain.ProcessRequestChain(mrc);
} catch (XmlException e) {
// FIXME?: On dropped connection do not
// dump a stacktrace, but should be safe
// to dump a console message as in
// default exception handler and
// call error_handlers_chain
Console.WriteLine("XmlException (Dropped Connection?): " + e.Message);
mrc.ProcessingException = e;
error_handlers_chain.ProcessRequestChain(mrc);
} catch (Exception e) {
// FIXME: this is not really expected use of ChannelDispatcher.ErrorHandlers.
// They are now correctly used in process_handler_chain (namely OperationInvokerHandler).
// For this kind of "outsider" exceptions are actually left thrown
// (and could even cause server loop crash in .NET).
Console.WriteLine("Exception " + e.Message + " " + e.StackTrace);
mrc.ProcessingException = e;
error_handlers_chain.ProcessRequestChain(mrc);
}
finally {
finalize_handlers_chain.ProcessRequestChain(mrc);
}
}
}
void DoProcessRequest (MessageProcessingContext mrc)
{
DispatchOperation operation = mrc.Operation;
Message req = mrc.IncomingMessage;
object instance = mrc.InstanceContext.GetServiceInstance(req);
object [] parameters, outParams;
BuildInvokeParams (mrc, out parameters);
if (operation.Invoker.IsSynchronous) {
object result = operation.Invoker.Invoke (instance, parameters, out outParams);
HandleInvokeResult (mrc, outParams, result);
} else {
var ar = operation.Invoker.InvokeBegin (instance, parameters, null, null);
object result = operation.Invoker.InvokeEnd (instance, out outParams, ar);
HandleInvokeResult (mrc, outParams, result);
}
}
InstanceContext CreateInstanceContext (MessageProcessingContext mrc)
{
InstanceContext iCtx = null;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
IInstanceContextProvider p = dispatchRuntime.InstanceContextProvider;
if (p != null) {
iCtx = p.GetExistingInstanceContext (mrc.IncomingMessage, mrc.OperationContext.Channel);
}
if (iCtx == null) {
ServiceHostBase host = dispatchRuntime.ChannelDispatcher.Host;
iCtx = new InstanceContext (dispatchRuntime.ChannelDispatcher.Host, null, false);
}
iCtx.Behavior = new InstanceBehavior (dispatchRuntime);
return iCtx;
}
void HandleInvokeResult (MessageProcessingContext mrc, object [] outputs, object result)
{
DispatchOperation operation = mrc.Operation;
mrc.EventsHandler.AfterInvoke (operation);
if (operation.IsOneWay)
return;
Message res = null;
if (operation.SerializeReply)
res = operation.Formatter.SerializeReply (
mrc.OperationContext.EndpointDispatcher.ChannelDispatcher.MessageVersion, outputs, result);
else
res = (Message) result;
res.Headers.CopyHeadersFrom (mrc.OperationContext.OutgoingMessageHeaders);
res.Properties.CopyProperties (mrc.OperationContext.OutgoingMessageProperties);
mrc.ReplyMessage = res;
}
InstanceContext CreateInstanceContext(MessageProcessingContext mrc)
{
InstanceContext iCtx = null;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
IInstanceContextProvider p = dispatchRuntime.InstanceContextProvider;
if (p != null)
{
iCtx = p.GetExistingInstanceContext(mrc.IncomingMessage, mrc.OperationContext.Channel);
}
if (iCtx == null)
{
ServiceHostBase host = dispatchRuntime.ChannelDispatcher.Host;
iCtx = new InstanceContext(dispatchRuntime.ChannelDispatcher.Host, null, false);
}
iCtx.InstanceManager = new InstanceManager(dispatchRuntime);
return(iCtx);
}
protected override bool ProcessRequest (MessageProcessingContext mrc)
{
RequestContext rc = mrc.RequestContext;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
DispatchOperation operation = GetOperation (mrc.IncomingMessage, dispatchRuntime);
mrc.Operation = operation;
try {
DoProcessRequest (mrc);
if (!mrc.Operation.IsOneWay)
Reply (mrc, true);
} catch (TargetInvocationException ex) {
mrc.ReplyMessage = BuildExceptionMessage (mrc, ex.InnerException,
dispatchRuntime.ChannelDispatcher.IncludeExceptionDetailInFaults);
if (!mrc.Operation.IsOneWay)
Reply (mrc, true);
ProcessCustomErrorHandlers (mrc, ex);
}
return false;
}
InstanceContext CreateInstanceContext (MessageProcessingContext mrc)
{
InstanceContext iCtx = null;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
IInstanceContextProvider p = dispatchRuntime.InstanceContextProvider;
if (p != null) {
iCtx = p.GetExistingInstanceContext (mrc.IncomingMessage, mrc.OperationContext.Channel);
}
if (iCtx == null) {
ServiceHostBase host = dispatchRuntime.ChannelDispatcher.Host;
iCtx = new InstanceContext (dispatchRuntime.ChannelDispatcher.Host, null, false);
// FIXME: could be easier way to identify session channel
if ((mrc.Channel is ISessionChannel<IInputSession> || mrc.Channel is ISessionChannel<IDuplexSession>) && host.Description.Behaviors.Find<ServiceBehaviorAttribute> ().InstanceContextMode == InstanceContextMode.PerSession)
mrc.Channel.Closed += delegate { iCtx.Close (); };
}
iCtx.InstanceManager = new InstanceManager (dispatchRuntime);
return iCtx;
}
protected override bool ProcessRequest (MessageProcessingContext mrc)
{
Exception ex = mrc.ProcessingException;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
//invoke all user handlers
ChannelDispatcher channelDispatcher = dispatchRuntime.ChannelDispatcher;
foreach (IErrorHandler handler in channelDispatcher.ErrorHandlers)
if (handler.HandleError (ex))
break;
FaultConverter fc = FaultConverter.GetDefaultFaultConverter (dispatchRuntime.ChannelDispatcher.MessageVersion);
Message res = null;
if (!fc.TryCreateFaultMessage (ex, out res))
throw ex;
mrc.ReplyMessage = res;
if (duplex != null)
mrc.Reply (duplex, true);
else
mrc.Reply (true);
return false;
}
protected override bool ProcessRequest(MessageProcessingContext mrc)
{
DispatchRuntime dispatch_runtime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
// FIXME: I doubt this should be done at this "handler"
// layer, especially considering about non-ServiceHost
// use of SecurityBindingElement + listener.
//
// For example there is no way to handle it in duplex
// dispatch callbacks.
if (dispatch_runtime.ChannelDispatcher == null)
{
return(false);
}
Message negoResponce = null;
// process WS-Trust based negotiation
MessageSecurityBindingSupport support =
dispatch_runtime.ChannelDispatcher.Listener.GetProperty <MessageSecurityBindingSupport> ();
if (support != null && mrc.IncomingMessage.Headers.FindHeader("Security", Constants.WssNamespace) < 0)
{
CommunicationSecurityTokenAuthenticator nego =
support.TokenAuthenticator as CommunicationSecurityTokenAuthenticator;
if (nego != null)
{
negoResponce = nego.Communication.ProcessNegotiation(mrc.IncomingMessage);
}
}
if (negoResponce == null)
{
return(false);
}
ReplyNegoResponse(mrc, negoResponce);
return(true);
}
void DoProcessRequest (MessageProcessingContext mrc)
{
DispatchOperation operation = mrc.Operation;
Message req = mrc.IncomingMessage;
object instance = mrc.InstanceContext.GetServiceInstance(req);
object [] parameters, outParams;
BuildInvokeParams (mrc, out parameters);
if (operation.Invoker.IsSynchronous) {
object result = operation.Invoker.Invoke (instance, parameters, out outParams);
HandleInvokeResult (mrc, outParams, result);
} else {
AsyncCallback callback = delegate {};
// FIXME: the original code passed null callback
// and null state, which is very wrong :(
// It is still wrong to pass dummy callback, but
// wrong code without obvious issues is better
// than code with an obvious issue.
var ar = operation.Invoker.InvokeBegin (instance, parameters, callback, null);
object result = operation.Invoker.InvokeEnd (instance, out outParams, ar);
HandleInvokeResult (mrc, outParams, result);
}
}
protected virtual void ProcessRequest (MessageProcessingContext mrc)
{
initialize_handlers_chain.ProcessRequestChain (mrc);
using (new OperationContextScope (mrc.OperationContext)) {
try {
process_handlers_chain.ProcessRequestChain (mrc);
}
catch (Exception e) {
// FIXME: this is not really expected use of ChannelDispatcher.ErrorHandlers.
// They are now correctly used in process_handler_chain (namely OperationInvokerHandler).
// For this kind of "outsider" exceptions are actually left thrown
// (and could even cause server loop crash in .NET).
Console.WriteLine ("Exception " + e.Message + " " + e.StackTrace);
mrc.ProcessingException = e;
error_handlers_chain.ProcessRequestChain (mrc);
}
finally {
finalize_handlers_chain.ProcessRequestChain (mrc);
}
}
}
void InvokeAsynchronous(MessageProcessingContext mrc, object instance, object [] parameters)
{
DispatchOperation operation = mrc.Operation;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
operation.Invoker.InvokeBegin(instance, parameters,
delegate(IAsyncResult res) {
try {
object result;
result = operation.Invoker.InvokeEnd(instance, out parameters, res);
HandleInvokeResult(mrc, parameters, result);
Reply(mrc, true);
} catch (Exception ex) {
mrc.ReplyMessage = BuildExceptionMessage(mrc, ex, dispatchRuntime.ChannelDispatcher.IncludeExceptionDetailInFaults);
if (!mrc.Operation.IsOneWay)
{
Reply(mrc, false);
}
ProcessCustomErrorHandlers(mrc, ex);
}
},
null);
}
protected override bool ProcessRequest(MessageProcessingContext mrc)
{
Exception ex = mrc.ProcessingException;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
//invoke all user handlers
ChannelDispatcher channelDispatcher = dispatchRuntime.ChannelDispatcher;
foreach (IErrorHandler handler in channelDispatcher.ErrorHandlers)
{
if (handler.HandleError(ex))
{
break;
}
}
// FIXME: remove them. FaultConverter also covers errors like EndpointNotFoundException, which this handler never covers. And checking converter twice is extraneous, so this part is just extraneous.
// FIXME: actually everything is done in OperationInvokerHandler now...
FaultConverter fc = FaultConverter.GetDefaultFaultConverter(dispatchRuntime.ChannelDispatcher.MessageVersion);
Message res = null;
if (!fc.TryCreateFaultMessage(ex, out res))
{
throw ex;
}
mrc.ReplyMessage = res;
if (duplex != null)
{
mrc.Reply(duplex, true);
}
else
{
mrc.Reply(true);
}
return(false);
}
Message BuildExceptionMessage (MessageProcessingContext mrc, Exception ex, bool includeDetailsInFault)
{
var dr = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
var cd = dr.ChannelDispatcher;
Message msg = null;
if (cd != null) // non-callback channel
foreach (var eh in cd.ErrorHandlers)
eh.ProvideFault (ex, cd.MessageVersion, ref msg);
if (msg != null)
return msg;
var req = mrc.IncomingMessage;
Type gft;
var fe = ex as FaultException;
if (fe != null && IsGenericFaultException (fe.GetType (), out gft)) {
foreach (var fci in mrc.Operation.FaultContractInfos) {
if (fci.Detail == gft)
return Message.CreateMessage (req.Version, fe.CreateMessageFault (), fci.Action);
}
}
// FIXME: set correct name
FaultCode fc = new FaultCode (
"InternalServiceFault",
req.Version.Addressing.Namespace);
if (includeDetailsInFault) {
return Message.CreateMessage (req.Version, fc, ex.Message, new ExceptionDetail (ex), req.Headers.Action);
}
string faultString =
@"The server was unable to process the request due to an internal error. The server may be able to return exception details (it depends on the server settings).";
return Message.CreateMessage (req.Version, fc, faultString, req.Headers.Action);
}
public void ProcessRequestChain (MessageProcessingContext mrc)
{
if (chain != null)
chain.ProcessRequestChain (mrc);
}
void BuildInvokeParams(MessageProcessingContext mrc, out object [] parameters)
{
DispatchOperation operation = mrc.Operation;
EnsureValid(operation);
if (operation.DeserializeRequest)
{
parameters = operation.Invoker.AllocateInputs();
operation.Formatter.DeserializeRequest(mrc.IncomingMessage, parameters);
}
else
{
parameters = new object [] { mrc.IncomingMessage }
};
mrc.EventsHandler.BeforeInvoke(operation);
}
void ProcessCustomErrorHandlers(MessageProcessingContext mrc, Exception ex)
{
var dr = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
bool shutdown = false;
if (dr.ChannelDispatcher != null) // non-callback channel
{
foreach (var eh in dr.ChannelDispatcher.ErrorHandlers)
{
shutdown |= eh.HandleError(ex);
}
}
if (shutdown)
{
ProcessSessionErrorShutdown(mrc);
}
}
void ProcessSessionErrorShutdown(MessageProcessingContext mrc)
{
var dr = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
var session = mrc.OperationContext.Channel.InputSession;
var dcc = mrc.OperationContext.Channel as IDuplexContextChannel;
if (session == null || dcc == null)
{
return;
}
foreach (var h in dr.InputSessionShutdownHandlers)
{
h.ChannelFaulted(dcc);
}
}
Message BuildExceptionMessage(MessageProcessingContext mrc, Exception ex, bool includeDetailsInFault)
{
var dr = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
var cd = dr.ChannelDispatcher;
Message msg = null;
if (cd != null) // non-callback channel
{
foreach (var eh in cd.ErrorHandlers)
{
eh.ProvideFault(ex, cd.MessageVersion, ref msg);
}
}
if (msg != null)
{
return(msg);
}
var req = mrc.IncomingMessage;
var fe = ex as FaultException;
if (fe != null && fe.GetType().IsGenericType)
{
var t = fe.GetType().GetGenericArguments() [0];
foreach (var fci in mrc.Operation.FaultContractInfos)
{
if (fci.Detail == t)
{
return(Message.CreateMessage(req.Version, fe.CreateMessageFault(), fci.Action));
}
}
}
// FIXME: set correct name
FaultCode fc = new FaultCode(
"InternalServiceFault",
req.Version.Addressing.Namespace);
if (includeDetailsInFault)
{
return(Message.CreateMessage(req.Version, fc, ex.Message, new ExceptionDetail(ex), req.Headers.Action));
}
string faultString =
@"The server was unable to process the request due to an internal error. The server may be able to return exception details (it depends on the server settings).";
return(Message.CreateMessage(req.Version, fc, faultString, req.Headers.Action));
}
void EnsureValid(DispatchOperation operation)
{
if (operation.Invoker == null)
{
throw new InvalidOperationException(String.Format("DispatchOperation '{0}' for contract '{1}' requires Invoker.", operation.Name, operation.Parent.EndpointDispatcher.ContractName));
}
if ((operation.DeserializeRequest || operation.SerializeReply) && operation.Formatter == null)
{
throw new InvalidOperationException("The DispatchOperation '" + operation.Name + "' requires Formatter, since DeserializeRequest and SerializeReply are not both false.");
}
}
}
protected override bool ProcessRequest (MessageProcessingContext mrc)
{
EnsureInstanceContextOpen (mrc.InstanceContext);
AfterReceiveRequest (mrc);
return false;
}
public UserEventsHandler (MessageProcessingContext mrc)
{
request_context = mrc;
dispatch_runtime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
msg_inspectors_states = new object [dispatch_runtime.MessageInspectors.Count];
channel = request_context.OperationContext.Channel as IClientChannel;
}
void AfterReceiveRequest(MessageProcessingContext mrc)
{
mrc.EventsHandler.AfterReceiveRequest();
}
protected abstract bool ProcessRequest (MessageProcessingContext mrc);
protected override bool ProcessRequest(MessageProcessingContext mrc)
{
return(false);
}
public override void ProcessRequestChain(MessageProcessingContext mrc)
{
using (new OperationContextScope(mrc.OperationContext)) {
base.ProcessRequestChain(mrc);
}
}
public override void ProcessRequestChain (MessageProcessingContext mrc)
{
using (new OperationContextScope (mrc.OperationContext)) {
base.ProcessRequestChain (mrc);
}
}
protected override bool ProcessRequest (MessageProcessingContext mrc)
{
return false;
}
void AfterReceiveRequest (ref Message message, MessageProcessingContext mrc)
{
mrc.EventsHandler.AfterReceiveRequest ();
}
public virtual void ProcessRequestChain (MessageProcessingContext mrc)
{
if (!ProcessRequest (mrc) && next != null ) {
next.ProcessRequestChain (mrc);
}
}