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The First Few Milliseconds of an HTTPS Connection

The First Few Milliseconds of an HTTPS Connection
Convinced from spending hours reading rave reviews, Bob eagerly clicked “Proceed to Checkout” for his gallon of Tuscan Whole Milk and… Whoa! What just happened? In the 220 milliseconds that flew by, a lot of interesting stuff happened to make Firefox change the address bar color and put a lock in the lower right corner. With the help of Wireshark, my favorite network tool, and a slightly modified debug build of Firefox, we can see exactly what’s going on. By agreement of RFC 2818, Firefox knew that “https” meant it should connect to port 443 at Amazon.com: Most people associate HTTPS with SSL (Secure Sockets Layer) which was created by Netscape in the mid 90’s. Client Hello TLS wraps all traffic in “records” of different types. The next two bytes are 0x0301 which indicate that this is a version 3.1 record which shows that TLS 1.0 is essentially SSL 3.1. The handshake record is broken out into several messages. Server Hello Checking out the Certificate Why should we trust this certificate?

Algorithm Design The Rhetoric of the Hyperlink The hyperlink is the most elemental of the bundle of ideas that we call the Web. If the bit is the quark of information, the hyperlink is the hydrogen molecule. It shapes the microstructure of information today. Surprisingly though, it is nearly as mysterious now as it was back in July 1945, when Vannevar Bush first proposed the idea in his Atlantic Monthly article, As We May Think. Image from Wikipedia, free license Hyper-Grammar and Hyper-Style The hyperlink is not a glorified electronic citation-and-library-retrieval mechanism. This is the default mental model most people have of hyperlinks, a model borrowed from academic citation, and made more informal: Implicit inline: Nick Carr believes that Google is making us stupid.Explicit inline: Nick Carr believes that Google is making us stupid (see this article in the Atlantic). Both are simple ports of constructs like “Nick Carr believes [Carr, 2008] that Google is making us stupid.” Hyperlinking as Form-Content Mixing That’s not all.

DJ Helper Home Page undefined Table of contents What is this? Features Detailed description Installation / Requirements Download Tutorial - How to set up double WinAmps Tutorial - How to do instant switches Tutorial - Beatmixing for everyone Tutorial - Using the "Metronome" method Tutorial - Organizing your songs Additional hints License, Copyright & contact information The DJ Helper is a plugin for WinAmp, the "ultimate high-fidelity music player for Windows". The DJ Helper gives WinAmp more features than professional DJ-type CD players that cost $500 or more. Using the DJ Helper and a standard PC with two soundcards, you can master performances like a pro DJ, with unprecedented ease. New in version 2.5: New look, with WinAmp-like colors (at last...). New in version 2.5: Automatic volume control. New in version 2.5: Automatic BPM counting. New in version 2.5: Playing status indicator (Playing/Paused/Cued, etc). New in version 2.2: Three independent Cue Points, all of them savable. Temporary pitch bend by +/- 3%.

The Basics of C Programming" The C programming language is a popular and widely used programming language for creating computer programs. Programmers around the world embrace C because it gives maximum control and efficiency to the programmer. If you are a programmer, or if you are interested in becoming a programmer, there are a couple of benefits you gain from learning C: You will be able to read and write code for a large number of platforms -- everything from microcontrollers to the most advanced scientific systems can be written in C, and many modern operating systems are written in C.The jump to the object oriented C++ language becomes much easier. In this article, we will walk through the entire language and show you how to become a C programmer, starting at the beginning.

ReverseHttp Scopa (Kartenspiel) Scopa (italienisch für Besen) ist ein beliebtes italienisches Kartenspiel. Gespielt wird üblicherweise mit einem eigenen Deck, den sogenannten napoletanischen Karten (carte napoletane). Im Handel sind diese Karten auch unter der Bezeichnung Piacentine 109 zu beziehen. Meistens wird zu zweit gespielt. Jedoch existieren eine Menge Spielvarianten, die sich in Spieleranzahl, Zählweisen, Regeln und verwendeten Karten unterscheiden können. Napoletanische Karten Das Spiel besitzt 40 Karten in vier Farben. denari - Gold, dargestellt als Münzen (auch Sonnen genannt)bastoni - Stäbecoppe - Kelchespade - Schwerter In allen Farben laufen die Werte der Karten von eins bis zehn, wobei das Ass die Eins ist mit jeweils nur einem abgebildeten Gegenstand, die Karten Zwei bis Sieben zeigen dementsprechend die jeweilige Anzahl an Gegenständen. Ein Spiel setzt sich aus mehreren Runden zusammen. Es gibt je einen Punkt für eine scopa. Außerdem gibt es jeweils genau einen Punkt für den Spieler oder die Partei

Programming, Motherfucker - Do you speak it? 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. This confuses users and generally discourages them from continuing to use your site. To fix the problem, all URLs on the page must use HTTPS. Relative URLs are the answer. Either of these images will display without warning on either HTTP or HTTPS pages. But what if you need to pull resources from another site? If this reference appears in an HTTPS page, the mixed content warning will appear. Here, we've left off the protocol scheme, but included a host name. You have to be careful to only use this syntax in pages destined for browsers. <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="//download.macromedia.com/pub/shockwave/cabs/flash/blah#blah" width="600" height="400"> ...

Lady Blackbird: Adventures in the Wild Blue Yonder Lady Blackbird is on the run from an arranged marriage to Count Carlowe. She hired a smuggler skyship, The Owl, to take her from her palace on the Imperial world of Ilysium to the far reaches of the Remnants, so she could be with her once secret lover: the pirate king Uriah Flint. HOWEVER, just before reaching the halfway point of Haven, The Owl was pursued and captured by the Imperial cruiser Hand of Sorrow, under charges of flying a false flag. EVEN NOW, Lady Blackbird, her bodyguard, and the crew of The Owl are detained in the brig, while the Imperial commander runs the smuggler ship’s registry over the wireless. It’s only a matter of time before they discover the outstanding warrants and learn that The Owl is owned by none other than the infamous outcast, Cyrus Vance. How will Lady Blackbird and the others escape the Hand of Sorrow? What dangers lie in their path? Will they be able to find the secret lair of the pirate king? Go.

Top 10 Ways to be Screwed by "C" To get on this list, a bug has to be able to cause at least half a day of futile head scratching, and has to be aggravated by the poor design of the "C" language. In the interests of equal time, and to see how the world has progressed in the 20-odd years since "C" escaped from its spawning ground, see my Top 10 Ways to be Screwed by the Java programming language, and for more general ways to waste a lot of time due to bad software, try my Adventures in Hell page. A better language would allow fallible programmers to be more productive. Infallible programmers, of the type unix' and "C" designers anticipated, need read no further. In fairness, I have to admit that the writers of compilers have improved on the situation in recent years, by detecting and warning about potentially bad code in many cases. Non-terminated comment, "accidentally" terminated by some subsequent comment, with the code in between swallowed. a=b; /* this is a bug c=d; /* c=d will never happen */ Or consider this: or as

Implementing a simple HTTP/Web server in java for handling POST Note: An updated version of this post can be found in which will handle any kind of file uploads (text and binary files) of large size. In the last section on java, we have seen how to implement a simple/lightweight HTTP/Web Server to handle HTTP GET methods. In this section, we will see how to implement a simple HTTP/Web server in java to handle POST methods with an example of a file upload server using the POST method through a client form data. The benefit of implementing our own HTTP Server to handle GET/POST methods is that we can use them for some simple/lightweight applications which doesn't require an Apache Web server or a servlet container to be deployed to handle HTTP client requests, also these simple HTTP servers can be used as utility classes which can be integrated in a small scale applications. The below HTTP POST Server does the following functions. 1. 2. 3. So here's the code. Working:

Link Shell Extension Unroll follows Outer Junctions/Symlink Directories and rebuilds the content of Outer Junctions/Symlink Directories inside the hierarchy at the destination location. Unroll also applies to Outer Symlink Files, which means, that unroll causes the target of Outer Symlink Files to be copied to the destination location. In the above example Folder1 is copied to Destination/Folder1, and Outer Junction/Symlink and all the files/directories below Outer Junction/Symlink Target are copied to the folder Outer Junction/Symlink in the destination. The objective behind unrolling Outer Junctions/Symlink Directories is to get everything with which the source is connected and rebuild it as seperate copy in the destination. It resembles the 'hair of the elephant' pattern: Pull on a hair of an elephant, and get the whole elephant. Unroll is the default behaviour for Smart Copy, Smart Mirror, Delorean Copy and Clone. Advanced thoughts on Unrolling This kind of nesting can be much more complex:

Linux Directory Structure (File System Structure) Explained with Examples by Ramesh Natarajan on September 8, 2010 Have you wondered why certain programs are located under /bin, or /sbin, or /usr/bin, or /usr/sbin? For example, less command is located under /usr/bin directory. Why not /bin, or /sbin, or /usr/sbin? In this article, let us review the Linux filesystem structures and understand the meaning of individual high-level directories. 1. / – Root Every single file and directory starts from the root directory.Only root user has write privilege under this directory.Please note that /root is root user’s home directory, which is not same as /. 2. Contains binary executables.Common linux commands you need to use in single-user modes are located under this directory.Commands used by all the users of the system are located here.For example: ps, ls, ping, grep, cp. 3. 4. Contains configuration files required by all programs.This also contains startup and shutdown shell scripts used to start/stop individual programs.For example: /etc/resolv.conf, /etc/logrotate.conf

libebb libebb is a lightweight HTTP server library for C. It lays the foundation for writing a web server by providing the socket juggling and request parsing. By implementing the HTTP/1.1 grammar provided in RFC2612, libebb understands most most valid HTTP/1.1 connections (persistent, pipelined, and chunked requests included) and rejects invalid or malicious requests. libebb supports SSL over HTTP. The library embraces a minimalistic single-threaded evented design. No control is removed from the user. For example, all allocations are done through callbacks so that the user might implement in optimal ways for their specific application. libebb depends on POSIX sockets, libev, and optionally GnuTLS. libebb is in the early stages of development and probably contains many bugs. libebb is released under the X11 license. Usage libebb is a simple API, mostly it is providing callbacks. callbacks to allocate and initialize data for libebb. ebb_server my_server->new_connection = my_new_connection_callback;

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