1591
Facebook's DKIM RSA key should be crackable
If Facebook sends you a mail they will sign it using DKIM . Here are the headers from a mail I received the other day: DKIM-Signature: v=1...
New
The latest blog posts to take off on Hacker News. 1,616 posts.
1592
1593
1594
What Every Developer Should Know About URLs
Everything a web developer should know about URLs: their nine parts, special characters and encoding, and how relative URLs resolve to absolute ones.
1595
1596
1597
Advanced SSH Techniques
At one site where I provide technical assistance, access to the network is all done via ssh over the Internet. However, one can't get access to the machines directly; one must first make an ssh connection to a gateway box I'll call martha. martha doesn't allow one to use regular passwords or keys, though. We're all…
1598
A full TCP/IP stack in under 200 LoC (and the power of DSLs)
(Note: This is the third and final part of a series. Part one appeared Monday and part two appeared yesterday.)
1599
How to run a Linux based home web server
Sometimes you need complete control over the server, and don't want to pay $20 to $40 a month for a VPS. In this article, I'll describe step by step how to set up a home web server using Ubuntu, capable of handling modest spikes in traffic.
1600
1601
Http-https transitions and relative URLs
When building a web site with HTTPS pages, one of the annoying tasks is to ensure that those pages make no references to HTTP resources. If they do, then Internet Explorer will pop up alarming messages about mixing secure and insecure content, and do you want to display the insecure content.
1602
1603
1604
1605
1606
1607
The problems with url shorteners
URL shortening services have been around for a number of years . Their original purpose was to prevent cumbersome URLs from getting fragmented by broken email clients that felt the need to wrap everything to an 80 column screen. Addendum: They're useful in print , too. But it's 2009 now, and this problem no longer…
1608
1609
1610
Imminent Death of the Net Predicted due to RCF3484
Warning: the following is excessively technical, and is intended more for the sake of the next poor sod who types "vista dns round robin resolution" into Google than it is for my actual friends list. (Except for a few of you. And you know who you are.) Also, since I want this to be searchable on…
1611
Why GPSes suck, and what to do about it
I’m the lead of the GPSD project , a service daemon that monitors GPS receivers on serial or USB ports and provides TPV (time-position-velocity) reports in a simple format on on a well-known Internet port. GPSD makes this job looks easy. But it’s not — oh, it’s decidedly not — and thereby hangs an entertaining tale of…
1612
Why HTTP?
The world doesn’t need another arbitrary binary protocol. Just use HTTP. Your life will be simpler. Originally this came up when scaling a gaggle of MySQL machines. I would have killed for a reliable proxy. It’s with this in mind that I’ve come up with my list of things that HTTP has that an arbitrary protocol will…
1613
1614
HTTP Conversation Codes
I mapped HTTP status codes to workplace conversation snippets. "404: I have no idea what you're talking about." "502: Bob is refusing to work with me on this." Now available as a poster. Note how the spec reveals programmers always blame the client.
1615
1616