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Thursday, May 01, 2008 5:00 AM

TIBCO Announces WCF Integration

At their user conference in San Francisco yesterday, TIBCO announced two integration initiatives to bring the TIBCO and Microsoft platforms closer together. TIBCO is developing a TIBCO EMS transport channel for WCF. Although Microsoft doesn't have a formal
Posted by Nicholas Allen | 2 Comments
Tuesday, April 01, 2008 5:00 AM

The Pipe DACL

When a named pipe channel listener creates a new named pipe it has to supply a discretionary ACL that describes who can connect to the pipe. Here is how that DACL is constructed: An access control entry is added to deny GENERIC_ALL access to the well-known
Posted by Nicholas Allen | 1 Comments
Monday, December 31, 2007 5:00 AM

Mapping Credentials to Authentication Schemes

You may have noticed that an HTTP binding is configured with an HttpClientCredentialType whereas an HTTP binding element is configured with an AuthenticationScheme. How are these two settings related? If you want to switch between a custom binding and
Posted by Nicholas Allen | 3 Comments
Friday, December 28, 2007 5:00 AM

Controlling HTTP Connection Limits

I need to make many simultaneous HTTP calls to the same service from my client application. How do I increase the limit on the number of HTTP connections? This setting isn't available on any of the bindings or binding elements but the default limit can
Posted by Nicholas Allen | 3 Comments
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Tuesday, December 18, 2007 5:00 AM

Concurrent Channel Performance

Being thread-safe is different than being concurrent. The channel interfaces are thread-safe so that multiple callers can use them at the same time without getting garbled messages. However, if multiple callers try to send messages on a single channel
Posted by Nicholas Allen | 1 Comments
Tuesday, October 02, 2007 5:00 AM

Always Begin with Accept

Inside a service, there's a fundamental loop running whose job it is to create channels for the incoming connections to the service. There's another loop that runs later, which you may argue is equally fundamental, that reads messages from each channel
Posted by Nicholas Allen | 1 Comments
Tuesday, August 14, 2007 5:00 AM

Creating Sessions over HTTP

I've got a sessionful contract that I want to use with HTTP. How do I get the HTTP transport to produce a sessionful channel shape? The basic design principle of channels is that they produce whatever channel shape is their natural message exchange pattern.
Posted by Nicholas Allen | 5 Comments
Thursday, July 05, 2007 5:00 AM

Adding HTTP Headers

Why doesn't anything happen when I try to add HTTP headers from a message encoder? The problem here is a basic issue of timing. Recall the interface contract that a message encoder has with its transport. The transport receives a message from the next
Posted by Nicholas Allen | 2 Comments
Tuesday, April 10, 2007 5:00 AM

Interfaces for GetProperty, Part 1

This is more of a reference than anything else. People have asked me what interfaces do something when used with GetProperty on a binding element. Of course, a custom implementation can do whatever it wishes in its GetProperty, so I can only tell you
Posted by Nicholas Allen | 1 Comments
Friday, March 30, 2007 5:00 AM

Setting the Message Via

Can I write a point-to-point router service by setting the Via property for outgoing messages? Like most things, this is going to depend on the specific behavior of the transport channel you're using, but in general the answer is no. The transport channel
Posted by Nicholas Allen | 1 Comments
Tuesday, March 13, 2007 5:00 AM

Channel Writing Checklist (Optional)

Let's fill in some of the spaces around yesterday's checklist with a list of additional features for a custom channel. Nothing that's been added to this list is required to actually send or receive messages. By doing the things listed here, you can enable
Posted by Nicholas Allen | 1 Comments
Thursday, February 22, 2007 5:00 AM

Transport Channels

Let's shift gears for a bit and talk about transport channels now as opposed to protocol channels. Everything that was said yesterday for channel stacks is still true when we add transport channels to the picture. Everything that was said yesterday for
Posted by Nicholas Allen | 2 Comments
Wednesday, January 17, 2007 5:00 AM

Faking Channel Security

I occasionally see people asking how they can fake the security capabilities of a binding. These questions often start off with "I'm getting an error message that a message's required protection level is not being met". Now, I'm not precisely sure why
Posted by Nicholas Allen | 5 Comments
Tuesday, January 09, 2007 5:00 AM

Manual Addressing

How can a client application control the To address of an outgoing message? I don't want to create a new proxy for every connection. This is one of those topics that I could have sworn that I wrote about but can't find any evidence of it online. Actually,
Posted by Nicholas Allen | 4 Comments
Thursday, November 30, 2006 5:00 AM

Proxy Bypassing Behavior

The HTTP transport and binding element have three settings for controlling the proxy behavior. public bool BypassProxyOnLocal { get; set; } public Uri ProxyAddress { get; set; } public bool UseDefaultWebProxy { get; set; } UseDefaultWebProxy controls
Posted by Nicholas Allen | 3 Comments
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