Posts from 2011
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Practical Testing: 31 - A bug in DestroyTimer.
Back in 2004, I wrote a series of articles called “Practical Testing” where I took a piece of complicated multi-threaded code and wrote tests for it. I then rebuild the code from scratch in a test driven development style to … -
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GetExtendedTcpTable(), MIB_TCPTABLE_OWNER_PID and TIME_WAIT
I have a client who is possibly suffering from and I thought that the best way to find out for sure was to get them to add the TIME_WAIT perfmon counter to their normal counter logs so that we could see how and when sockets in TIME_WAIT … -
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In response to @dhanji on unit testing
Dhanji over at Rethrick Construction has written an interesting piece on the value of unit testing. I agree with his conclusion; “So the next time someone comes to you saying let’s write the tests first, or that we should aim … -
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Movable Type upgrade annoyance
I’ve just upgraded Movable Type from 5.03 to 5.11. The upgrade itself went smoothly except for one thing. A recent fix to MT to remove an obscure HTML standard violation that Firefox was causing problems with means that permalinks … -
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The WebSocket protocol, design by committee and requirements tracing
I’ve been working with the WebSocket protocol recently, updating the code that implements the protocol in The Server Framework to the latest version of the draft standard (the HyBi 09 version). Whilst this looks like it’s almost … -
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WebSockets is a stream, not a message based protocol...
As I mentioned here, the WebSockets protocol is, at this point, a bit of a mess due to the evolution of the protocol and the fact that it’s being pulled in various directions by various interested parties. I’m just ranting about … -
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WebSockets - Why differentiate between text and binary frames?
As I mentioned here, the WebSockets protocol is, at this point, a bit of a mess due to the evolution of the protocol and the fact that it’s being pulled in various directions by various interested parties. I’m just ranting about … -
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WebSockets - Why do we need to mask data from client to server?
As I mentioned here, the WebSockets protocol is, at this point, a bit of a mess due to the evolution of the protocol and the fact that it’s being pulled in various directions by various interested parties. I’m just ranting about … -
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Another day, another deadlock avoided with no harm done
I’m currently building a new example server for The Server Framework. This is a variation on one of our proxy server examples for a client that’s doing some WebSockets work. The idea is that the server takes an inbound … -
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WebSockets - The deflate-stream extension is broken and badly designed
As I mentioned here, the WebSockets protocol is, at this point, a bit of a mess due to the evolution of the protocol and the fact that it’s being pulled in various directions by various interested parties. I’m just ranting about … -
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WebSockets - I miss the TCP half close...
As I mentioned here, the WebSockets protocol is, at this point, a bit of a mess due to the evolution of the protocol and the fact that it’s being pulled in various directions by various interested parties. I’m just ranting about … -
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I guess this is a geek thing...
I’m just back from a wonderfully relaxing holiday in Italy. This time we had internet connectivity all the time, so I’m up to date on email, etc. The first thing that I do after all the ‘we’re back, how’s the … -
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Autobahn WebSockets protocol compliance test suite
I’m nearing the end of my WebSockets implementation for The Server Framework and have been dealing with various protocol compliance issues. Whilst I have decent unit test coverage I haven’t, yet, sat down and produced compliance … -
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The WebSocket protocol - Draft, HyBi 13
Another day, another WebSocket protocol draft… That’s probably a little unfair actually. Although there have been several drafts in quick succession over the past few weeks the protocol itself has only changed very slightly. … -
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The curious case of the missing copy constructor
I have a tendency to write unit tests that are a little more invasive than they need to be; these tests make sure that not only are the results as expected but also that as many of the side-effects and interactions with other objects are as … -
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Designing an asynchronous server-side API for WebSockets
I’ve just released The WebSockets Option Pack for The Server Framework and I think it’s worth running through why the API that I designed ended up as it did. This will probably end up as part of The Server Framework’s … -
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The WebSocket protocol is done...
Version 16 of the draft WebSocket protocol specification was just released and the HyBi mailing list announcement for this version contained the following: Chairs and editors believe that this version is final (before the publication of the … -
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Inside the Windows 8 Registered I/O Extensions, RIO
Before I started to look at RIO for inclusion in The Server Framework I did a quick check on the Microsoft BUILD site to see if there were any sessions that dealt with it specifically, I didn’t find any. Once I posted my blog posting … -
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RFC 6455: The WebSocket protocol
I know I’ve said this before, but now it’s really done… The WebSocket protocol is now an official RFC. There are a small number of changes between RFC 6455 and the draft WebSocket protocol version 17; the only important …
