Separating functionalities - C# Discussion Boards

why "client-activated" when we implement events mechanism in remoting

19-Aug-03 16:55

use the axhost utility to create a .net wrapper around the component then reference that assembly

I'm not an expert yet, but I play one at work. Yeah and here too.

devvvy18-Aug-03 21:29

Help! remoting: What's wrong with my client config file?

18-Aug-03 21:29

Hi, wondering why we need to do "client-activated" mode when we implement events in remoting. Correct me if I'm wrong.

Thanks.

norm

devvvy18-Aug-03 18:44

Re: Help! remoting: What's wrong with my client config file?

18-Aug-03 18:44

Hi, I got my client working well using remoting:

ChannelServices.RegisterChannel( new HttpChannel() );
IRemoteObj obj = (IRemoteObj) Activator.GetObject(
typeof(IRemoteObj),
"http://localhost:8085/CRemoteObjURI"
);

Then, I tried to use configuration file on client side, keep getting:

"System.Runtime.Remoting.RemotingException: config file cannot be read successfully due to exception System.Runtime.Remoting.Exception: Unknown attribute Url found on wellknown node"

Here's my config file:
<configuration>
<system.runtime.remoting>
<application name="CRemoteObjClient">
<client>
<wellknown
type="nsCRemoteObj.CRemoteObj, CRemoteObj" Url="tcp://localhost:8086/CRemoteObj"
/>
</client>
<channels>
<channel ref="tcp" displayName="CRemoteObjClient tcp channel" />
</channels>
</application>
</system.runtime.remoting>
</configuration>

I understand the format should be:
<wellknown
type="namespace.class_name, assembly_dll_name" Url="url/uri"
/>

namespace of remote object = nsCRemoteObj
class_name of remote object =CRemoteObj
assembly_dll_name of REMOTE OBJECT dll =CRemoteObj
url by which server publish this remote object = "tcp://localhost:8086"
uri of remote object as speified by server = "CRemoteObjURI" (That's what I specified in server's config file, I also tried substituting "CRemoteObj" here - but same error message...)

I'm confused by uri and url. It seems url is IP address or domain name. URI is "resource id" as specified by server registration - which in this case is "CRemoteObjURI".

Here's my server config:
<configuration>
<system.runtime.remoting>
<application name="CRemoteObjServer">
<service>
<wellknown mode="SingleCall" type="nsCRemoteObj.CRemoteObj, CRemoteObj" objectUri="CRemoteObjURI" />
</service>
<channels>
<channel ref="tcp" port="8086" displayName="CRemoteObjServer tcp channel" />
<channel ref="http" port="8085" displayName="CRemoteObjServer http channel" />
</channels>
</application>
</system.runtime.remoting>
</configuration>

I am having a hard time with this. Help would be greatly appreciated. Thanks!

norm

James T. Johnson18-Aug-03 18:52

James T. Johnson

18-Aug-03 18:52

In your client config file, try changing Url to url. XML is case sensitive so that might be your entire problem (and why it says it doesn't know what to do with it).

James

"My words but a whisper -- your deafness a SHOUT.
I may make you feel but I can't make you think." - Thick as a Brick, Jethro Tull 1972

Re: Help! remoting: What's wrong with my client config file?

devvvy18-Aug-03 19:26

Separating functionalities

18-Aug-03 19:26

ooo0... that is it! Thanks a lot James! I wasted 3 hours on it.

norm

Meysam Mahfouzi18-Aug-03 17:51

18-Aug-03 17:51

I have a class which has a private member variable named _myObjects of type ArrayList. My question is : How can I separate Add and Enumeration operations for user who uses this class. I want user only be able to iterate through arraylist and not directly adding any item to it. Some idea was of creating a property that casts _myObjects to IList interface like this:

public IList MyObjects{
	get{
	   return _myObjects;
	   }
	}

but IList has both Enumeration and Addition capabilities!
Regardless of this example, I am looking for some general solution.
Any comment is greatly appreciated. Rose | [Rose]

Don't forget, that's

Persian Gulf

not Arabian gulf!

Ista18-Aug-03 18:09

18-Aug-03 18:09

I would do this (2) things

either

public IEnumerator MyObjects
{
get
return myList.GetEnumerator();
}
}

or implement the class and only make public the functions you want and make the rest internal or private

I'm not an expert yet, but I play one at work. Yeah and here too.

Meysam Mahfouzi19-Aug-03 17:02

19-Aug-03 17:02

Good idea, but what about loosing access to Count property?

Don't forget, that's

Persian Gulf

not Arabian gulf!

Ista19-Aug-03 17:06

19-Aug-03 17:06

There isnt a Count property in that interface.

if your inheriting just make it internal or private

I'm not an expert yet, but I play one at work. Yeah and here too.

Meysam Mahfouzi19-Aug-03 17:14

19-Aug-03 17:14

Yes this is what I said! there is no Count property in IEnumerator interface, so we don't have access to Count property when we return IEnumerator.(But we need it!)

Is it possible to cast the return type to more than one interface?(I am almost sure it's not!)

Don't forget, that's

Persian Gulf

not Arabian gulf!

Ista19-Aug-03 17:32

19-Aug-03 17:32

Taking the first idea:

public IEnumerator MyObjects
{
get
return myList.GetEnumerator();
}
}

now lets expand on this

public class MyEnumerator : IEnumerable
{
private ArrayList myList;

public MyEnumerator( ArrayList newList )
{
myList = newList;
}

public System.Collections.IEnumerator GetEnumerator ( )
{
return myList.GetEnumerator();
}

public int Count
{
get
{
return myList.Count;
}
}
}

so that includes a count its not part of the object

if you want it to be a self supporting one I would exchange IEnumerable for IEnumerator and implement the 3 methods and properties instead.

nick

I'm not an expert yet, but I play one at work. Yeah and here too.

Ista19-Aug-03 17:32

19-Aug-03 17:32

hey I misunderstood you

I'm not an expert yet, but I play one at work. Yeah and here too.

Meysam Mahfouzi19-Aug-03 17:42

19-Aug-03 17:42

Now that you understand my question Wink | ;)

, have you got any solution?
Hugely Thanx Rose | [Rose]

Don't forget, that's

Persian Gulf

not Arabian gulf!

Ista20-Aug-03 3:20

how do you get the current assembly name and file name?

20-Aug-03 3:20

I answered it 2 replies ago, or is there still something you need

I'm not an expert yet, but I play one at work. Yeah and here too.

devvvy18-Aug-03 16:08

Re: how do you get the current assembly name and file name?

18-Aug-03 16:08

Hi, just wondering, how do you get the current assembly name or file name?

This line retrieved public key token, version and other stuff associated with current assembly:

assem_name = System.AppDomain.CurrentDomain.GetAssemblies().GetValue(0).ToString();

But file name AND assembly name of the assembly would be good.

norm

Ista18-Aug-03 16:26

Know one in admin answers so can you please explain this simple tiny ?

18-Aug-03 16:26

This will get you what you want

<br />
System.Reflection.Assembly asd = (System.Reflection.Assembly)System.AppDomain.CurrentDomain.GetAssemblies().GetValue(0);<br />

although it prints out the full name, use a split method to grab the data. the first characters is the name.

codebase property is the file name

although using System.zZReflection.Assembly namespace you can play around

paste that code in your program and put a breakpoint on it. Then run

when it stops click debug->Windows->Local

click the plus sign on asd and EUREKA you can see the whole objerct in action and perform discovery

nick

I'm not an expert yet, but I play one at work. Yeah and here too.

Ista18-Aug-03 16:02