tiscaf http server, overview

Don't miss! Next tiscaf development phase takes place here: https://github.com/gnieh/tiscaf

tiscaf - is an http server written in and intended to be used with the Scala programming language.

motivations

Very often a current software exosphere makes almost impossible to do things a simple way. Almost all developers are under heavy pressure of dependency on J2EE and accompanying frameworks with dozens of external libraries (how many megabytes do those external jars take?). All you know these software monsters with infinite dependencies trees... I have decided I need more freedom.

OTOH, if you like to spend your life dealing with extraneous-designed XML-files (rather coding) and/or to satisfy multiple APIs presenting good ideas (even if last ones are indeed good), be warned - tiscaf lives in another world.

The server has just what you need to handle an HTTP request, no more. I treat the server as a low-level self-contained "assembly" module (being used instead of servlet engine) which is easy to embed into any application as well as to wrap with, say, own templating framework, with any dispatching model (besides included helper for tree-like URIs space), with this or that (besides default) execution environment (say, Comet-like), and so on.

features

benchmarking

Some numbers are presenting here to take you a taste of the server's performance.

In particular, you can be interested in this benchmarking results. Shortly, both server and ApacheBench are running on the same workstation (Intel i5 760 at 3.2GHz). Operating system is Arch Linux with default TCP/IP stack settings. For 20000 (ab doesn't allow more) concurrent clients about 83000 requests were processed per second. The response consists of standard header and two chars body.

For a single client I have got about 22000 requests per second.

Another test is for throughput: on the same workstation and 100 concurrent clients downloading ~3Mb files (and with default 4 KB buffers) I have got: "Transfer rate: 1552710.18 [Kbytes/sec] received". For 10000 clients it's about 1420000 Kbytes/sec.

documentation

The manual is here. Also you can look at HomeServer.scala demo - browse your home directory.

source code

Is here: tiscaf-0.7.zip.

feedback

Send to me, Andrew Gaydenko, a@gaydenko.com (please, add tiscaf to your subject). I'm mostly interested in a feedback concerning tricky requests dropping a (reasonably configured) server down - if you are able to construct such request. Also I'm open for donations.

events (in reverse order)

2012.07.16 v.0.7 is out - just a small fix: Lucas Satabin has found a bug in multiple request parameters decoding. Lucas, thanks!

2012.01.15 v.0.6 is out - towards arbitrary "dynamics". Among changes and small fixes these ones are interesting:

I'd want to emphasize: at all these three cases - in hApp.resolve implementation, in hTalk.req using, and (if you do) in hLet.talkExecutor overriding - you have the same HReqData information in you hands - full and ready to use request data.

Also HLet.delegate is eliminated as far as the job hasn't any special meaning any more after eliminating before method. Just call anotherLet.act(tk).

2011.11.19 v.0.5 is released. It is a big backend rewrite. Resulted server is simpler to use, code is more readable. Less synchronization, less mutability. Concurrent requests handling is 2-3 times faster. Changes:

2011.06.09 v.0.4 is released: towards Scala 2.9. Changes:

2010.06.10 v.0.3 is released: towards Scala 2.8. Changes:

2008.11.22 v.0.2.4 is released. Changes: HReqHeaderData's and HTalk.req's methods host and port return now Option[String] instead of String. Thanks to Will Scullin - he has pointed me there are plenty of simplified http clients which don't bother about Host-string in request headers.

2008.10.27 v.0.2.3 is released. Changes:

2008.10.15 v.0.2.2 is released - again for windows users. Thanks to Christos KK Loverdos - he has kindly provided .bat scripts to quickly build-and-try HomeServer.scala demo.

2008.10.15 v.0.2.1 is dedicated to ms windows users. Thanks to Tim Clendenen - he has pointed to an issue concerning windows file system and tested a fix.

2008.10.13 v.0.2 is released. Changes:

I'm still waiting for further suggestions wrt API stabilization.

2008.10.09 As long as one of the goals of tiscaf publishing is a participating in adoption and spreading of the Scala programming language, I have decided to lower licensing restrictions and have republished the application (v.0.1.1) in terms of LGPL.

2008.10.08 tiscaf http server v.0.1 is published in terms of GPL2.