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Friday, April 25, 2008 5:00 AM

Messaging Additions in Orcas

I've had scattered posts in the past talking about the messaging features and enhancements in Orcas. Over the next few days I'm going to be doing a bit of consolidating to organize that information into a few listings of the top changes using reasonably
Posted by Nicholas Allen | 6 Comments
Thursday, April 17, 2008 5:00 AM

Why Dual is Reliable

You may have noticed that bindings use two different classes for configuring reliability: ReliableSession and OptionalReliableSession. The only difference between the two is that OptionalReliableSession has an Enabled property that allows the reliable
Posted by Nicholas Allen | 1 Comments
Tuesday, March 25, 2008 5:00 AM

Why Ordering is Ignored

Why doesn't validation catch when the two sides of a reliable connection disagree about whether the session is ordered? It doesn't actually matter to the sender whether the session is supposed to be ordered, and so it doesn't actually matter whether the
Posted by Nicholas Allen | 1 Comments
Thursday, December 06, 2007 5:00 AM

Silent Security Failures

I'm using reliable messaging and getting an exception that the reliable session has faulted. It's the first exception that I see so I don't know why the session faulted. How do I know what went wrong? Here's the full error message: The underlying secure
Posted by Nicholas Allen | 1 Comments
Thursday, October 25, 2007 5:00 AM

No Session Before Sending

When you create a sessionful channel, that implies the existence of some correlation factor for all of the messages that are associated with the session. For example, the correlation factor for a TCP session is that all of the messages travel over the
Posted by Nicholas Allen | 1 Comments
Friday, August 24, 2007 5:00 AM

Measuring Reliable Session Speed with Duplex

The results last time were in disagreement with the rule of thumb that turning on reliable messaging cuts your throughput roughly by half . One possible explanation for the disagreement is that the measurements were looking at the wrong thing. The measurement
Posted by Nicholas Allen | 2 Comments
Wednesday, August 22, 2007 5:00 AM

Measuring Reliable Session Speed

What kind of a performance impact does ensuring reliable delivery have? A common rule of thumb that I've heard circulated in the past is that turning on a feature such as reliable messaging or security cuts your throughput roughly by half. I decided to
Posted by Nicholas Allen | 1 Comments
Friday, July 13, 2007 5:00 AM

Sticky Sessions

How can I use reliable messaging together with a load balancer? The point of reliable messaging is to help ensure that messages get from one place to another. This means that the protocol notices when messages that were expected to be delivered go missing.
Posted by Nicholas Allen | 1 Comments
Tuesday, July 03, 2007 5:00 AM

WS-ReliableMessaging 1.1 Completed

I thought I posted this right after the ratification announcement, but evidently I ran Spot the Intern instead. WS-ReliableMessaging 1.1 is the OASIS standardized version of the protocol for transferring messages reliably despite node or network failures.
Posted by Nicholas Allen | 1 Comments
Tuesday, June 26, 2007 5:00 AM

Session Lifetime on the Server

Why doesn't increasing the InactivityTimeout of a reliable session keep client connections alive for longer? When using a reliable session, there are two different inactivity timers that must be satisfied to keep the connection alive. If either inactivity
Posted by Nicholas Allen | 3 Comments
Tuesday, April 24, 2007 5:00 AM

Socket Failures

What is the lifetime of a TCP session? The lifetime of the session object from a TCP transport channel lasts exactly as long as you own the underlying TCP connection. Once you give up ownership of the TCP connection, either by saying that you're done
Posted by Nicholas Allen | 1 Comments
Monday, February 26, 2007 5:00 AM

Channels Illustrated

In the channel development series last week, we looked at the characteristics of channels (protocol channels, transport channels, and why you would write a channel at all). Let's use a specific example to illustrate those points. Although the protocol
Posted by Nicholas Allen | 1 Comments
Tuesday, December 05, 2006 5:00 AM

Incompatible Addressing with Reliable Messaging

This was a bug that we found a few weeks before V1 shipped but it was not deemed severe enough to fix at the time. I know that one customer has hit this while experimenting and it's pretty easy to understand what's going wrong once you hear the details.
Posted by Nicholas Allen | 1 Comments
 
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