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Dynamic applying of client’s configuration: Part II

By importing of endpoints from WsdlImporter, the resulting enpoint can not be used to dicertly create the instance of the proxy class at the client. To ilustrate this take a look on the following example: MetadataExchangeClient mexClient = new MetadataExchangeClient...

Published Thu, Jan 01 2007 3:42 PM by Damir Dobric

Filed under: WCF

Dynamic applying of client's configuration

Usually by creating of the client proxy for some service, there are two general approaches: Using of configuration file or applying required information programmatically. Additionally, the configuration can be applied by using of MetaDataResolver . In...

Published Sun, Jan 01 2007 8:24 PM by Damir Dobric

Filed under: WCF

Inside of WSDL

WSDL addresses the communication by defining an XML grammar for describing network services as collections of communication endpoints capable of exchanging messages. It provides documentation for distributed system and serves as a recipe for automating...

Published Thu, Jan 01 2007 12:59 AM by Damir Dobric

Filed under: WCF

Hacking of WCF's OperationContext

Sometimes you may require, that every message you send in context of calling of an operation, has some custom header. This should not be a big problem by implementing of messages on the messaging layer. However you may want to stay on the operation level...

Published Fri, Oct 10 2006 10:57 PM by Damir Dobric

Filed under: WCF

Sequence header by reliable messaging

By using of reliable messaging, messages exchanged between consumer and provider have an additional haeder “Sequence”, which corresponds to the Web Service Reliable Messaging specification . This post contains the request and response messages exchanged...

Published Fri, Oct 10 2006 2:02 PM by Damir Dobric

Filed under: WCF

Creating of sequence of reliable session

When a none-reliable session (enabled = false) is used by each operation call (if no encription used) one request message is sent from client to server and one response messages is sent from serverto client (operation is not one-way). This sequence is...

Published Thu, Oct 10 2006 3:58 PM by Damir Dobric

Filed under: WCF

WCF Error : Only WS-ReliableMessaging messages are processed by this endpoint

This error occurs, when the target service is configured for reliable messaging and the client not. To configure the service or client for enabling of reliable message two approaches can be used: Programmatically or by using of configuration. Following...

Published Thu, Oct 10 2006 3:19 PM by Damir Dobric

Filed under: WCF

Authenticating of the peer by using of X509 certificate

By using of X509 certificate to authenticate the peer, sometimes one decides to trust any peer, which satisfies the trusted chain. However, sometimes it is necessary to trust explicitly to specific certificate. For example, imagine there is a client which...

Published Sun, Oct 10 2006 9:47 AM by Damir Dobric

Filed under: WCF

Cannot load the X.509 certificate identity specified in the configuration

By authenticating of service’s endpoint following configuration can be used: < identity > < certificateReference storeName = " My " storeLocation = " CurrentUser " x509FindType = " FindBySubjectName " findValue = " www.testsvc.eu.crt " />...

Published Sun, Oct 10 2006 12:37 AM by Damir Dobric

Filed under: WCF

Windows Communication Foundation Architecture Overview

Here is an interesting and useful high-level Architecture Overview of Windows Communication Foundation. The article describes some fundamentals of WCF.

Published Tue, Sep 09 2006 9:45 AM by Damir Dobric

Filed under: WCF

WCF Custom Transport Channel: Dispatcher does not invoke the Service Operation

I implemented one custom transport based on duplex-shape. Unfortunately, the transport was in some scenarios not able to route the message to wanted operation. After intensive tracing and debugging I figured out that one message is not routed to the service...

Published Sun, Aug 08 2006 11:04 PM by Damir Dobric

Filed under: WCF

WCF example: Using of self-hosted service with SSL

To establish the HTTP communication WCF uses internally HttpTransportBindingElement for HTTP and HttsTransportBindingElement for HTTPS. Both binding elements are implemented on the top of System.Net.HttpListener which is a part .NET2.0. This class utilizes...

Published Tue, Aug 08 2006 6:58 PM by Damir Dobric

Filed under: WCF

Reading of identity while executing service operation

When the client and service interoperate by using of the (for example) Basic athentication on the transport layer (security mode = Transport or TransportCredentialOnly), it is often required to read or access the client’s credentials in the context of...

Published Mon, Jul 07 2006 6:26 PM by Damir Dobric

Filed under: WCF

Wcf TransportCredentialOnly mode: Basic clear text credentials over unsecured transport

During development of WCF communication, you can have a requirement to establish the communication over secured transport by using of SSL. In that case the transport security should be used: < security mode = " Transport " > Note that in this case...

Published Mon, Jul 07 2006 6:00 PM by Damir Dobric

Filed under: WCF

BasicHttpBinding internals

During extending of WCF (Windows Communication Foundation) one of confusing tasks was often to choose the appropriate configuration settings related to required security mechanism. If you take a look on a huge number of configuration settings, you may...

Published Sun, Jul 07 2006 2:36 PM by Damir Dobric

Filed under: WCF

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Dynamic applying of client’s configuration: Part II

Dynamic applying of client's configuration

Inside of WSDL

Hacking of WCF's OperationContext

Sequence header by reliable messaging

Creating of sequence of reliable session

WCF Error : Only WS-ReliableMessaging messages are processed by this endpoint

Authenticating of the peer by using of X509 certificate

Cannot load the X.509 certificate identity specified in the configuration

Windows Communication Foundation Architecture Overview

WCF Custom Transport Channel: Dispatcher does not invoke the Service Operation

WCF example: Using of self-hosted service with SSL

Reading of identity while executing service operation

Wcf TransportCredentialOnly mode: Basic clear text credentials over unsecured transport

BasicHttpBinding internals