Re: [ADVANCED-DOTNET] Remoting GAC

ayse ayse Fri, 20 Jun 2003 01:17:16 -0700

Sorry for the lengthy responses.
I think my problem is on the Server Host side. Actually the code works if I
keep the "MyRemotableObject" in the same folder as the Host app (client app
doesn't have a copy on the same folder except in GAC).
I am posting my host snippet again, so you don't have read all the way to
figure out what I was doing.
On this side I want to use typeinfo as string so I can avoid any dependency
to "MyRemotableObject" or an interface.

I have a generic Remoting Server Host application which registers my
remotable object with the code below.

IChannel chnl = new TcpServerChannel("MyRemoteServer", 8228);

string typeinfo = "MyRemotableObject.FooObj, MyRemotableObject,
Version=3.0.1.0, Culture=neutral, PublicKeyToken=034567812341234a"

Type typ = Type.GetType(typeinfo);
RemotingConfiguration.RegisterWellKnownServiceType(typ, "MyRemoteServer",
WellKnownObjectMode.SingleCall);
Above seems to work fine, no exception even when my remotable assembly is

in

the GAC. My client can successfully connect if my remotable object is not

in

GAC.

-----Original Message-----
From: "ayse ayse" <[EMAIL PROTECTED]>
Sent: Thursday, June 19, 2003 2:25 PM
To: 'Moderated discussion of advanced .NET topics.'
Subject: RE: [ADVANCED-DOTNET] Remoting GAC

Rick,

Thanks for looking up.

Instead of doing "typ = Type.GetType(typeinfo)" on the client, you probably
just want "typ =

typeof(IMyinterface)".

I prefered typeinfo since it is a string and allowed no prior knowledge
(this is a wrapper). But Interface would work as well. I have just tried
with the interface but still same exception below.

I don't see how putting the assembly in the GAC or not would make a

difference.
I didn't think so either, except GAC requires signature public key,
version...

Are you talking about the GAC on the server or on the client?

Both in GAC

Also, try looking at the fusion log (fuslogvw.exe) after the exception is

thrown for details of the problem.
Not much help there. Attached at the end. But interesting the Fusion log is
thrown for for the host application not Client.


System.IO.FileNotFoundException: File or assembly name RemotableTestObject,
or one of its dependencies, was not found.
File name: "RemotableTestObject"

Server stack trace:
  at System.Reflection.Assembly.nLoad(AssemblyName fileName, String
codeBase, Boolean isStringized, Evidence assemblySecurity, Boolean
throwOnFileNotFound, Assembly locationHint, StackCrawlMark& stackMark)
  at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef,
Boolean stringized, Evidence assemblySecurity, StackCrawlMark& stackMark)
  at System.Reflection.Assembly.InternalLoad(String assemblyString,
Evidence assemblySecurity, StackCrawlMark& stackMark)
  at System.Reflection.Assembly.Load(String assemblyString)
  at System.Runtime.Remoting.RemotingConfigInfo.LoadType(String typeName,
String assemblyName)
  at
System.Runtime.Remoting.RemotingConfigInfo.StartupWellKnownObject(String
asmName, String svrTypeName, String URI, WellKnownObjectMode mode, Boolean
fReplace)
  at
System.Runtime.Remoting.RemotingConfigInfo.StartupWellKnownObject(String
URI)
  at
System.Runtime.Remoting.RemotingConfigHandler.CreateWellKnownObject(String
uri)
  at System.Runtime.Remoting.IdentityHolder.CasualResolveIdentity(String
uri)
  at System.Runtime.Remoting.Messaging.MethodCall.ResolveType()
  at System.Runtime.Remoting.Messaging.MethodCall.ResolveMethod(Boolean
bThrowIfNotResolved)
  at System.Runtime.Remoting.Messaging.MethodCall..ctor(Object
handlerObject, BinaryMethodCallMessage smuggledMsg)
  at
System.Runtime.Serialization.Formatters.Binary.BinaryMethodCall.ReadArray(Object[]
callA, Object handlerObject)
  at
System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler
handler, __BinaryParser serParser, Boolean fCheck, IMethodCallMessage
methodCallMessage)
  at
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream
serializationStream, HeaderHandler handler, Boolean fCheck,
IMethodCallMessage methodCallMessage)
  at
System.Runtime.Remoting.Channels.CoreChannel.DeserializeBinaryRequestMessage(String
objectUri, Stream inputStream, Boolean bStrictBinding)
  at
System.Runtime.Remoting.Channels.BinaryServerFormatterSink.ProcessMessage(IServerChannelSinkStack
sinkStack, IMessage requestMsg, ITransportHeaders requestHeaders, Stream
requestStream, IMessage& responseMsg, ITransportHeaders& responseHeaders,
Stream& responseStream)

Exception rethrown at [0]:
  at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage
reqMsg, IMessage retMsg)
  at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&
msgData, Int32 type)
  at RemotableTestObject.RemotableObject.Run()
  at Class1.Main(String[] args) in S:\main\class1.cs:line 117

Fusion log follows:
=== Pre-bind state information ===
LOG: DisplayName = RemotableTestObject
(Partial)
LOG: Appbase = S:\bin\
LOG: Initial PrivatePath = NULL
Calling assembly : (Unknown).
===

LOG: Policy not being applied to reference at this time (private, custom,
partial, or location-based assembly bind).
LOG: Post-policy reference: RemotableTestObject
LOG: Attempting download of new URL file:///S:/bin/RemotableTestObject.DLL.
LOG: Attempting download of new URL
file:///S:/bin/RemotableTestObject/RemotableTestObject.DLL.
LOG: Attempting download of new URL file:///S:/bin/RemotableTestObject.EXE.
LOG: Attempting download of new URL
file:///S:/bin/RemotableTestObject/RemotableTestObject.EXE.

FUSION LOG !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*** Assembly Binder Log Entry  (6/19/2003 @ 2:10:10 PM) ***

The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.

Assembly manager loaded from:
C:\WINNT\Microsoft.NET\Framework\v1.0.3705\fusion.dll
Running under executable  S:\bin\RemotingHostApp.exe
--- A detailed error log follows.

=== Pre-bind state information ===
LOG: DisplayName = RemotableTestObject
(Partial)
LOG: Appbase = S:\bin\
LOG: Initial PrivatePath = NULL
LOG: Dynamic Base = NULL
LOG: Cache Base = NULL
LOG: AppName = NULL
Calling assembly : (Unknown).
===

LOG: Processing DEVPATH.
LOG: DEVPATH is not set. Falling through to regular bind.
LOG: Policy not being applied to reference at this time (private, custom,
partial, or location-based assembly bind).
LOG: Post-policy reference: RemotableTestObject
LOG: Attempting download of new URL file:///S:/bin/RemotableTestObject.DLL.
LOG: Attempting download of new URL
file:///S:/bin/RemotableTestObject/RemotableTestObject.DLL.
LOG: Attempting download of new URL file:///S:/bin/RemotableTestObject.EXE.
LOG: Attempting download of new URL
file:///S:/bin/RemotableTestObject/RemotableTestObject.EXE.
LOG: All probing URLs attempted and failed.


-----Original Message-----
From: Rick Byers [mailto:[EMAIL PROTECTED]
Sent: Thursday, June 19, 2003 12:36 PM
To: [EMAIL PROTECTED]
Subject: Re: [ADVANCED-DOTNET] Remoting GAC


On the client, if you're going to use 'Connect' to access your remote object
(as opposed to 'new MyRemotableObject'), then you can access it using an
interface (which you appear to want to do anyway).  Instead of doing "typ =
Type.GetType(typeinfo)" on the client, you probably just want "typ =
typeof(IMyinterface)".  I assume that RemotableObject implements
IMyinterface (since thats what you're casting the proxy to on the client),
right?  By connecting using the interface type, you're requiring only the
interface assembly (not the implementation) to be present on your client.

I don't see how putting the assembly in the GAC or not would make a
difference.  Are you talking about the GAC on the server or on the client?
Also, try looking at the fusion log (fuslogvw.exe) after the exception is
thrown for details of the problem.

Rick

----- Original Message -----
From: "ayse ayse" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, June 19, 2003 1:24 PM
Subject: Re: Remoting GAC

I am having a bit of a trouble with remoting assemblies from GAC.

I need to support remoting regardless if my remotable object is in the

GAC.

All the code below works fine if I don't use GAC!

I have a generic Remoting Server Host application which registers my
remotable object with the code below.

IChannel chnl = new TcpServerChannel("MyRemoteServer", 8228);

string typeinfo = "MyRemotableObject.FooObj, MyRemotableObject,
Version=3.0.1.0, Culture=neutral, PublicKeyToken=034567812341234a"

Type typ = Type.GetType(typeinfo);
RemotingConfiguration.RegisterWellKnownServiceType(typ, "MyRemoteServer",
WellKnownObjectMode.SingleCall);
Above seems to work fine, no exception even when my remotable assembly is

in

the GAC. My client can successfully connect if my remotable object is not

in

GAC.

My client:
string uri = "tcp://MyRemotemachine:8228/MyRemoteServer";
string typeinfo = "MyRemotableObject.FooObj, MyRemotableObject,
Version=3.0.1.0, Culture=neutral, PublicKeyToken=034567812341234a"
IChannel chnl = new TcpClientChannel();
Type typ = Type.GetType(typeinfo);
IMyinterface rem_o = (IMyinterface)RemotingServices.Connect(typ, uri);

This creates the proxy and works fine if RemotableObject is not in GAC.

But

if in GAC throws "System.IO.FileNotFound" with "either the assemebly... or
one of it's dependencies not found" exception as soon as I call a method
even rem_o.ToString().


MyRemotableObject:
public class RemotableObject:MarshalByRefObject
        {
                public RemotableObject()
        ....

}

Any quick catches or suggestions? I don't want to use App.config and
activate programmaticaly allowing my clients to create a remote or local
instance as they choose.
Thanks.

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Re: [ADVANCED-DOTNET] Remoting GAC

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