Tallan's Technology Blog

Tallan's Top Technologists Share Their Thoughts on Today's Technology Challenges

Posts Tagged "WCF"

Dynamically set InstanceContextMode for a WCF Service from app.config or web.config

Dan Field

WCF offers a lot of very powerful configuration and extensibility options – sometimes it becomes a bit dizzying.
I recently had a requirement to design a WCF service that could potentially consume many system resources (particularly, RAM) in some client scenarios….

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How to resolve the “Reason: Unexpected event (“eos”) in state “processing_header”.” error from the XML Disassembler

This error is typically harmless, but can result when the XML Disassembler encounters an empty Envelope message instance that’s formatted like this:
instead of this:
BizTalk chooses to make a semantic difference between these two instances, and process the second one fine…

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Working with FILESTREAM BLOBs in BizTalk

MSDN provides an example of INSERTing large data into SQL Server, leveraging the WCF-SQL adapter’s built in FILESTREAM capabilities.  However, it’s also possible to leverage the transaction enlisted by the WCF adapter in a custom pipeline to pull FILESTREAM data out…

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WCF-SQL Polling and the ESB Portal

Dan Field

With the ESB Toolkit, BizTalk provides an excellent framework for handling exceptions that occur throughout the ESB. There are many built in facilities that are as simple as checking off a box to route failed messages to the portal, and…

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Debugging SQL Procedure calls from BizTalk revisited

Dan Field

I wrote previously (here) about using SQL Server Profile to capture and debug SQL calls from BizTalk.  This method works well when there are no errors actually calling the procedure (but you want to tune the procedure using ‘real’ data…

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BizTalk Orchestration handling webHttp REST GET requests

Dan Field

Consider the following scenario: you have a tested BizTalk Orchestration that effectively takes a parameter (say, a message identifier) and returns the message from a database for consumption.  Now you want to expose a WCF Service for consumers of that…

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BizTalk WCF Timeout Issue

Jeff Bolton

Background
On a recent engagement, I was developing a BizTalk 2013 solution that received XML-based data from several sources and ultimately inserted rows into a SQL Server database using a stored procedure. An additional requirement was that the database connection had…

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Typed Polling with WCF Adapters

Cesar Cordero

Typed Polling with WCF Adapters
It is very common to have a requirement in middleware design where we have to query SQL tables and retrieve some data when certein conditions are met.
The WCF-based adapters available with the BizTalk Adapter Pack enable…

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MABS EAI Bridge LoB Lookup (Part 2 of 2)

Dan Field

Last week month (sorry about that!), I wrote a post about using MABS to access a LoB system (in the example, SQL Server) behind several layers of firewalls (here).
We looked at the following tasks

Creating the BizTalk services
Setting up BizTalk Adapter…

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WCF-WebHttp and custom JSON error messages

Dan Field

I’m currently working on a solution that exposes a BizTalk Orchestration as a RESTful webservice using WCF-WebHttp.  Upon successful processing of the message, the service returns binary data for the client to download.  However, if the processing fails, I wanted…

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