art page 11 - Dave's Blog

Search
My timeline on Mastodon

"Forwarded HTTP Extension" - Andreas Petersson, Martin Nilsson

2011 Nov 17, 3:30

Describes forward HTTP headers to explicitly list proxying information that might otherwise be lost.

PermalinkCommentstechnical ietf http http-header proxy

“The Big Head by San Francisco artist Dan Rosenfeld is an...

2011 Nov 15, 11:54


The Big Head by San Francisco artist Dan Rosenfeld is an oversize video conferencing helmet that displays an enlarged version of the wearer’s face on a 24″ monitor at the front of the helmet. Rosenfeld debuted the helmet at this year’s Halloween” (via The Big Head, A Giant Videoconferencing Helmet by Dan Rosenfeld)

PermalinkCommentshumor halloween big-head video

"HTTP Strict Transport Security (HSTS)" - Jeff Hodges, Collin Jackson, Adam Barth

2011 Nov 14, 5:28PermalinkCommentstechnical https ietf

MemeCats: #OccupyPopTarts

2011 Oct 20, 12:00PermalinkCommentslolcats memecats memes nyan cat occupy wall street politics protests signs technical

Bug Spotting: Smart pointers and parameter evaluation order

2011 Oct 19, 5:58
The following code works fine. I have a ccomptr named resolvedUri and I want to update its hostname so I do the following:
        CreateIUriBuilder(resolvedUri, 0, 0, &builder);
builder->SetHost(host);
builder->CreateUri(0xFFFFFFFF, 0, 0, &resolvedUri);


But the following similar looking code has a bug:
    ResolveHost(resolvedUri, &resolvedUri);


The issue is that doing &resolvedUri gets the address of the pointer but also clears out the pointer due to the definition of my smart pointer class:
    operator T**()  
{
T *ptrValue = mPtrValue;
mPtrValue->Release();
mPtrValue = NULL;
return &ptrValue;
}


In C++ there’s no guarantee about the order in which parameters for a function or method are evaluated. In the case above, &resolvedUri clears out the ccomptr before evaluating resolvedUri.Get() and so ResolveHostAlias gets a nullptr.

An interesting and related thread on stack overflow on undefined behavior in C++.
PermalinkCommentsc++ technical bug programming smart-pointer cpp

The Most Anticipated Shoe of All Time: Q+A With Someone Who Won A Pair of Marty McFly's Futuristic Kicks | Motherboard

2011 Sep 20, 9:27Interview with someone who bought the limited edition Back to the Future shoes: "[Interviewer] Have you watched the Back to the Future movies? [Respondent] Yeah, some of em. The hoverboards and shit. That was cool." ARGH! Not worthy!PermalinkCommentshumor bttf nike shoes

Eric Lawrence and Adam Barth on Strict-Transport-Security

2011 Aug 22, 9:27PermalinkCommentshttps http http-header technical strict-transport-security browser

Thread Local Storage, part 1: Overview « Nynaeve

2011 Aug 6, 1:53Description of the inner workings of both of Window's TLS options, the Win32 APIs like TlsAlloc as well as __declspec(thread). I didn't know that the max number of TLS indices is now 1088.PermalinkCommentsblog programming development windows debug tls thread-local-storage

YouTube - ‪Star Trek: The Captain's Summit (1 of 7)‬‏

2011 Jun 30, 1:23"Join Whoopi Goldberg (Guinan) as she hosts The Captain's Summit. Whoopi sits down with Trek stars William Shatner (Kirk), Leonard Nimoy (Spock), Patrick Stewart (Picard) and Jonathan Frakes (Riker) and gets personal with them. From fan-etiquette to comparing series, this is a must see for all Trek fans."

PermalinkCommentsnerd video startrek youtube tng tos

YouTube - Radiohead - Paranoid Android: YouTube Artists Mix

2011 Jun 20, 2:36A mix of 36 YouTube videos of various people playing Radiohead's Paranoid Android. It sounds good but the video too is very compelling. Also I would be psych'ed if it were my video picked to rock out at 2:50.

The mix:


Crazy bear on accoustic from 6:03


Amazing big band rendition from 2:20
PermalinkCommentsvideo remix radiohead mashup paranoid-android music

Lifetimes of cryptographic hash functions

2011 Jun 20, 11:25A cautionary tale in chart form: lesson is make sure you can always upgrade your hashing algorithm or don't have security dependencies on hashing algorithms.PermalinkCommentsreference hash encryption security table technical humor

Rule 34 - Charlie's Diary

2011 Jun 12, 3:48Charles Stross puts parts of his new book Rule 34 on his blog: "By kind consent of the publishers, I'm able to give you a sneak preview of the first few chapters. So I'm going to roll them out on consecutive Fridays. Here's the opening."

Sneak previews in parts: PermalinkCommentscharles-stross rule-34 fiction scifi

WPAD Server Fiddler Extension Update v1.0.1

2011 Jun 12, 3:34
As it turns out the WPAD Server Fiddler Extension I made a while back actually has a non-malicious purpose. Apparently its useful for debugging HTTP on the WP7 phone (or so I'm told). Anyway I took some requests and I've fixed a few minor bugs (start button not updating correctly), changed the dialog to be a Fiddler tab so you can use it non-modally, and the WPAD server is now always off when Fiddler starts.
PermalinkCommentsextension fiddler technical update wpad

ViewText: Enter a URL to view its text

2011 Jun 5, 4:57"ViewText.org is a service provided to make reading content on the web easier, faster, and safer by extracting the main article content from news items, blog posts, RSS feeds, and PDF's." Includes API to extract the article text!PermalinkCommentsinternet web article html text api technical

THE FIFTY-NINE-STORY CRISIS, The New Yorker, 5/29/95, pp 45-53

2011 Jun 5, 4:56"What's an engineer's worst nightmare? To realize that the supports he designed for a skyscraper like Citicorp Center are flawed---and hurricane season is approaching."PermalinkCommentsarticle history design business engineering

Hidden device distorts news on wireless networks, brews beer, is time machine - Hack a Day

2011 May 30, 3:13"We covered the Newstweek, a wall-wart sized box that injects fake news stories over public WiFi connections last February, but now there’s a great walk through and it seems our doubts about this project were disproved."PermalinkCommentssecurity journalism wifi hack technical

Native x86 Android runtime will enable Android apps on Windows

2011 May 26, 1:28This was on my todo list. I'll scratch it off knowing far more funded folks are doing this: "A startup called BlueStacks has developed an Android runtime environment for the Windows operating system. It will enable users to run Android applications alongside conventional Windows software on Microsoft's operating system." "One example would be a convertible netbook tablet that normally runs Windows but switches to an Android interface for greater touch-friendliness when the screen is flipped.
Such a product would offer the full power and multitasking capabilities of Windows but also benefit from having access to Android's broad touch-enabled software ecosystem."PermalinkCommentswindows programming android java technical

clip.exe - Useful tool I didn't know shipped with Windows

2011 May 26, 11:00

When you run clip.exe, whatever comes into its standard input is put onto the clipboard. So when you need to move the result of something in your command window somewhere else you can pipe the result into clip.exe. Then you won't have to worry about the irritating way cmd.exe does block copy/pasting and you avoid having to manually fixup line breaks in wrapped lines. For instance, you can put the contents of a script into the clipboard with:

more cdo.cmd | clip

I've got a lot of stuff dumped in my bin folder that I sync across all my PCs so I didn't realize that clip.exe is a part of standard Windows installs.

Nice for avoiding the block copy in cmd.exe but I'd prefer to have the contents sort of tee'd into the clipboard and standard output. So TeeClip.ps1:

$input | tee -var teeclipout | clip;
$teeclipout;
PermalinkCommentspowershell clip tool clipboard cli technical windows tee

_opt Mnemonic

2011 May 24, 11:00

​I always have trouble remembering where the opt goes in SAL in the __deref_out case. The mnemonic is pretty simple: the _opt at the start of the SAL is for the pointer value at the start of the function. And the _opt at the end of the SAL is for the dereferenced pointer value at the end of the function.






SAL foo == nullptr allowed at function start? *foo == nullptr allowed at function end?
__deref_out void **foo No No
__deref_opt_out void **foo Yes No
__deref_out_opt void **foo No Yes
__deref_opt_out_opt void **foo Yes Yes
.
PermalinkCommentssal technical programming

Chromium Blog: SSL FalseStart Performance Results

2011 May 22, 10:44Links to the IETF draft document of and describes the perf benefits of SSL False Start.PermalinkCommentssecurity google browser web webbrowser https performance ssl tls technical
Older EntriesNewer Entries Creative Commons License Some rights reserved.