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November 2004 - Posts

Issues with Cloning MarshalByRefObject

Posted Wednesday, November 24, 2004 8:19 AM by manishg
Cloning MarshalByRefObjects can lead to some unexpected behaviour. When a MBR object is marshalled, it gets an unique identity which contains a unique URI to identify this object in the appdomain. When an external call is made to this object it is identified Read More...
2 Comments

using $hostName in remoting server channel config

Posted Tuesday, November 23, 2004 12:11 PM by manishg
If you set machineName="foo.com" in the server side remoting config (to avoid using ip addresses) and probably need to deploy the same config on multiple servers use machineName="$hostName" and remoting will substitute this with the current host dns qualified Read More...
0 Comments

Different ways to activate CLR types remotely

Posted Sunday, November 21, 2004 5:19 PM by manishg
A CLR type instance can be activated remotely in the following ways: 1. Through Config: This is probably the most common way. Use the client tag under system.runtime.remoting to register a type to go remote: <configuration> <system.runtime.remoting> Read More...
2 Comments

static method/field access in remoting

Posted Thursday, November 11, 2004 3:18 PM by manishg
This is probably not a very wellknown fact, but static methods and fields accessed via a remoting proxy, are actually executed locally on the client side. So even though a type is configured to go remote static accesses/invokations dont go remote. If Read More...
1 Comments

can remoting Singletons be GCed?

Posted Thursday, November 11, 2004 11:43 AM by manishg
Infact they could. The contract for a remoting singleton wellknown object is that "a" object would always be available on the remoting wellknown endpoint. It doesnt mean the same single instance is always available. Singletons also follow the same leasing Read More...
0 Comments

Channel priority in remoting

Posted Tuesday, November 09, 2004 5:10 PM by manishg
Each remoting channel has a priority associated with it. If there are multiple channels registered in the same appdomain and a MarshalByRefObject is marshalled out, all available channel data will flow with the ObjRef. The order is which this channel Read More...
0 Comments

versioning serialized delegates

Posted Monday, November 08, 2004 5:39 PM by manishg
Got an interesting question about how to deserialize delegates serialized with an older version of an assembly. While deserializing, if the older version isnt available the engine might throw a TypeLoadException. The Serialization binder doesnt help in Read More...
1 Comments

Does a remoting client need to register a channel?

Posted Wednesday, November 03, 2004 6:00 PM by manishg
A remoting client need not register a channel (if its http or tcp) when making a remote call. The remoting infrastructure will load an appropriate channel after looking at the scheme of the URL (tcp:// or http://). Though being explicit in code is goodness Read More...
0 Comments

Implementation isolation in remoting

Posted Tuesday, November 02, 2004 10:12 AM by manishg
As is common knowledge remoting needs server assemblies on the client for remote communication. In many cases sharing server implementation with the clients is undesirable. Interfaces can be used to acheive this isolation. An assembly which contains only Read More...
1 Comments

Failures in AppDomain.Unload

Posted Monday, November 01, 2004 10:21 AM by manishg
There are a couple of reasons why appdomain unloads can fail. One common failure is when all threads inside the appdomain cannot be unwound. This mostly happens when there are threads running unmanaged code. In a remoting case its possible a thread that Read More...
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