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Welcome to my blog, which was once a mailing list of the same name and is still generated by mail. Please reply via the "comment" links.

Always interested in offers/projects/new ideas. Eclectic experience in fields like: numerical computing; Python web; Java enterprise; functional languages; GPGPU; SQL databases; etc. Based in Santiago, Chile; telecommute worldwide. CV; email.

Personal Projects

Lepl parser for Python.

Colorless Green.

Photography around Santiago.

SVG experiment.

Professional Portfolio

Calibration of seismometers.

Data access via web services.

Cache rewrite.

Extending OpenSSH.

C-ORM: docs, API.

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© 2006-2015 Andrew Cooke (site) / post authors (content).

Skype protocol

From: "andrew cooke" <andrew@...>

Date: Mon, 12 Sep 2005 21:40:49 -0400 (CLT)

I was futzing around on my laptop when I noticed that there was a
connection open (shown by netstat) to a machine in Sweden (according to
DNS) that I had never heard of.  With TCPView I found that the port in
question was opened by Skype, so my first reaction was to wonder who in
Sweden would have me on a Skype buddy list.  I only know one or two people
in that part of the world, and they didn't seem likely to care that much
about me, so I started wondering how Skype works.

Well, it's P2P, and it was developed, apparently, by Kazaa.  The protocol
is described here - http://arxiv.org/ftp/cs/papers/0412/0412017.pdf

So it just had a connection open to a peer.  If you're reading this, peer,
sorry about the rather agressive port scan a while back... :o)



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