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Weird Soap Extension Problem

Frederik Vanderhaegen
10/19/2006 9:01:41 PM

dotnet web services: Hi,

I'm writing a simple soap extension for a webservice I developed (without
the use of an extension the webservice works perfect).
The extension is registered through the web.config files of my webservice
and my application.
In my extension I override the Chainstream method and implement the abstract
methods (GetInitializer, Initialize and ProcessMessage)

my chainstream method:
Stream _Original;
Stream _Chainned;

public override Stream ChainStream( Stream stream )
{
_Original = stream;
_Chainned = new MemoryStream();
return _Chainned;
}

my GetInitializer methods return null.
The processMessage (simplified) function:

public override void ProcessMessage(SoapMessage message)
{
switch (message.Stage)
{
case SoapMessageStage.BeforeSerialize:
if(message is System.Web.SoapClientMessage)
System.Diagnostics.Debug.WriteLine("Client
BeforeSerialize");
else
System.Diagnostics.Debug.WriteLine("Server
BeforeSerialize");
break;
case SoapMessageStage.AfterSerialize:
if(message is System.Web.SoapClientMessage)
System.Diagnostics.Debug.WriteLine("Client
AfterSerialize");
else
System.Diagnostics.Debug.WriteLine("Server
AfterSerialize");
break;
case SoapMessageStage.BeforeDeserialize:
if(message is System.Web.SoapClientMessage)
System.Diagnostics.Debug.WriteLine("Client
BeforeDeserialize");
else
System.Diagnostics.Debug.WriteLine("Server
BeforeDeserialize");
break;
case SoapMessageStage.AfterDeserialize:
if(message is System.Web.SoapClientMessage)
System.Diagnostics.Debug.WriteLine("Client
AfterDeserialize");
else
System.Diagnostics.Debug.WriteLine("Server
AfterDeserialize");
break;
}
}

So far the introduction, my problem is the following:
When I register the extension on both the client and the server and set a
breakpoint on the line "Server BeforeDeserialize",
the _Original and _Chainned variables are null => no soap message is
available.
When I register the extension on only the server then the two variables are
also null but when I then change the ChainStream method to
public override Stream ChainStream( Stream stream )
{
if(stream.GetType().FullName="System.Web.HttpInputStream")
return stream;
_Original = stream;
_Chainned = new MemoryStream();
return _Chainned;
}

everything works perfect for the server side.

I've tried a lot of different things but nothing seems to resolve my
problem.
It looks like I'm unable to send the soap request from my client to my
server, in "Client AfterSerialize" everything is perfect but in "Server
BeforeDeserialize" no message has been received.

Is there anyone who knows what I'm doing wrong?

Thx in advance

Frederik

RE: Weird Soap Extension Problem

chandra
11/3/2006 7:33:46 PM

[quoted text, click to view]

Probably you dont need to override the chainstream,

void Copy(Stream from, Stream to)
{
TextReader reader = new StreamReader(from);
TextWriter writer = new StreamWriter(to);
writer.WriteLine(reader.ReadToEnd());
writer.Flush();
}

try this..

RE: Weird Soap Extension Problem

vaish
11/7/2006 2:17:19 PM

[quoted text, click to view]

Hi

I have windows application in vb.net. I am trying to access the webservice in the remote computer. The remote server is not configured to use with WSDL.

I have been provided with VB6 application it works fine.
As I am using windows form Could you please tell me how can I implement soap extention in the client application(windows form- vb or Vs 2000)?

I will be greatful for you. Please help

Many Thanks
Vaish

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