Arachnida 1.5.00

Arachnida (the taxonomic class to which spiders belong) is an embeddable web server written in C++.

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GPL v3 
2.5/5 18
Ronald Landheer-Cieslak
ROOT \ Internet \ HTTP (WWW)
Arachnida (the taxonomic class to which spiders belong) is an embeddable web server written in C++. It uses the OpenSSL library for all connectivity and is therefore based on solid ground as far as support for cryptography and connectivity is concerned.

The Arachnida software consists of a small framework for networking written in C++ on top of OpenSSL. The framework in question allows you to asynchronously accept and handle connections, using a "new connection handler" to handle new connections and a "data handler" to handle incoming data. One such data handler is the HTTPDataHandler class, which will parse any incoming HTTP request and make a Request object out of it, which is passed to the HTTPRequestHandler to handle. This way of working allows for many interesting things:

the framework is easily extensible:
you can add support for basically any TCP/IP based protocol to the framework easily by just adding a handler. You could even add support for protocols that are not based on TCP/IP, but that would be (only) slightly more difficult.

Writing a handler is a straight-forward affair and allows you to focus on the protocol at hand rather than on connectivity issues.

the framework is fast:
there is very, very little overhead between the select call and the handler, allowing for many connections to be handled simultaniously by a single ConnectionHandler (the class that takes care of the call to select

the framework is stable:
the framework is designed to be robust: consistent use of RAII guards against resource leaks; exception-safety and type-safety have both been important targets from the very beginning, etc.

the framework is light-weight:
a minimalist HTTP server using Arachnida (i.e. the Mesothelae web server, which I used to catch headers sent by popular browsers) uses a total of 3.6 MB of memory when in full swing on Windows. The DLL "weighs" 136K of which 4K is data and 123K is code

the framework is portable:
everything is written in as-standard-as-possible C++, using only the STL, Boost, Loki and OpenSSL, all of which are very portable. Arachnida is developed using both Windows and Linux conjointly and is tested on both.

the framework is testable:
the framework comes with a test suite that tests quite a few corner-cases and will report any failure. The test suite consists of unit tests for each class and/or function in the framework, as well as regression tests for any bugs found (none so far, knock on wood).

What's New in This Release:

· This release adds session support to Damos, as well as the urlencode and urldecode functions. With session support in Damos also comes the ability to use custom-created Scorpion contexts (SSL).

Last updated on April 13th, 2008

#web server #network framework #HTTP server #web #server #network #framework

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