wiki:MunichHackathon2013

Version 25 (modified by Gert Döring, 10 years ago) (diff)

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OpenVPN Hackathon 2013

who

This is organized by Gert Döring (cron2) and sponsored by Spacenet AG (http://www.space.net/).

We have space for about 10 people in the conference room I have booked so far, so I'd limit this to "active developers that are also regularily contributing to #openvpn-devel or the mailing list". If there is overwhelming interest, I can get a larger room, but then the address listed below would change (still in Munich, but not as centrally located).

who is coming?

Name Topics Arrival Departure
Gert Döring no particular topics Fri morning-ish Sun, late night
Heiko Hund OpenVPN Windows Interactive Service
General OpenVPN for Windows architecture
Fri. ~15h Sun. ~18h
David Sommerseth Maintainer
Plug-in API
GUI on Linux
Fri, 15-ish Sun afternoon/evening
Arne Schwabe OpenVPN Dual Stack
OpenVPN for Android
Fri noo-ish Monday
Steffan Karger PolarSSL 1.3, elliptic curve crypto Friday noon-ish Sunday afternoon
Adriaan de Jong tbd, probably some PolarSSL/Elliptic curve work, open crypto trac tickets Friday Sunday
Samuli Seppänen Ticket review, CLA, OpenVPN 2.4/3.0, NSIS Friday 11:00Sunday 18:20
James Yonan OpenVPN 2.4/3.0 Thursday morning Monday morning

where?

We'll meet in one of the office locations of Spacenet. The address is:

SpaceNet AG
Landsberger Strasse 155
80687 München (Munich)
Germany

see google maps. The entrance is in the upper left corner on the inside of the "#" formed building.

Inside the "#", there are 4 entries in each of the corners, marked as "Haus 1" to "Haus 4". Take the entry "Haus 4". There is a reception for Cable&Wireless and SpaceNet? there. Tell the security guy that you want to visit SpaceNet?, and he'll call me or one of my colleagues and we'll pick you up (SpaceNet? is on the 1st floor of Haus 4). The guard will require some sort of deposit - ID card, driver license, etc - to ensure people properly check out at leaving.

This location is easy to reach by car or by public transport (Tram from central station).

Specifically:

  • if you arrive by plane, take S-Bahn S1 or S8 (it's a circle, S1 goes left, S8 goes right) and exit after about 45 minutes at "Hirschgarten" or "Donnersbergerbrücke". About 10 minutes walk from there, or take the Tram 18/19 for the remainder.
  • if you end up near the central station (either arriving by train, or with the S-Bahn), exit the central station on the south side, take Tram 18 or 19 towards Willibaldplatz / Gondrellplatz (westwards), and exit at "Lokschuppen". Landsberger Strasse is the street the Tram travels, 155 is across the street next to the "Bauhaus" market
  • if you come by car, parking in the vicinity is a bit problematic. You can park in the "Bauhaus" garage but that's "for their customers only", so you'd need to relocate to the SpaceNet? parking garage when the SpaceNet? crew has left (no guest parking there, unfortunately). We'll find something.

If you get lost, call me: +49 177 2160221

when?

The hackathon will take place from Nov 15 (Friday), 2013 to Nov 17 (Sunday). The room is ours for the full 3 days, and I (cron2) will be there at Friday 09:30-ish. I have no confirmed arrival dates from anyone else yet...

food

I'll sponsor soft drinks and snacks, and the conference room, and I'll sponsor a "Weisswurstfrühstück" for Saturday.

For lunch, there's lots of nice small restaurants in the area, so we'll find something better than in Brussels.

Dinner on Friday is international fingerfood at Cafe Westend, nice TexMex? food and not too loud (19:00, 8-10 persons, reservation for "Döring")

For dinner on Saturday we booked a table at Augustinerkeller for some serious Bavarianism.

what?

So what is the goal of the Hackathon?

  • meet in person, talk about things
    • contributors agreement (CLA) for OpenVPN 3
    • future development of 2.x and 3.x
    • GPL violation on multiple apps on the play store
  • hack on the 2.4 codebase - there's a number of "large" things we could try to tackle
    • dual-stack patches
    • openvpn interactive service
  • work on open trac issues
    • lots of things to review and bugs to fix

I'm all open for additions here - I think the meetings in Brussels have shown that "just being able to sit together and hack" is a useful excercise. Add reasonable food, air condition, etc. and things should be even better.

Internet

of course there will be free WiFi? available, and for bandwidth junkies, wired Internet as well :-) - Spacenet is an Internet service provider, and that's one of their core locations, connected with multiple 10Gbit links to the world...

accomodation

  • "Motel One Munich City West" has been recommended as "being close, reasonably priced, and generally OK"

results

This is just a sort of unordered list of things we agree on, to avoid thoughts getting lost

  • push-peer-info of IV_OPENVPN_GUI_VERSION -> go there in the core, gui writers can add --setenv line if they want. Format for the content = "<gui_identifier><space><version>"
  • GPL violations - "we should go after them, to strengthen the GPL" - but making money out of GPL software means you have to accept that people will use your software without paying for it
  • --float with TLS HMAC
    • the code looks good (syzzer), but it opens the server for CPU usage DoS attacks (walking a potentially long list of clients for each unknown packet)
    • put a big warning label there
    • plaisthos: if we do that, send a notice to the client that the server can do it, so a mobile client can handle network changes "floating" instead of "full reconnect"
  • OpenVPN 3
    • it's proven itself as a mobile client
    • more work is needed for desktop client
    • even more work needed for server
    • it's the base for the iOS client, which must have a closed license (Apple requirement), so a contributor agreement is needed to enable dual-license distribution
    • what to do with "occasional contributors" that do not want to sign the agreement?
    • dazo needs to check with redhat whether he can sign such a CLA
    • formal text not yet finalized, James looking at stuff like the Google Android code agreement for guidance
    • process for android: sign and scan an e-mail, or sign electronically on a web page
    • would dual-license GPL/BSD work?
    • what to do about zealots that will not accept closed license? are we in a risk of forking the project? can we do anything about it, if we accept the need to have an iOS client? (cron2 says "no")
    • separate openvpn 3 into "core" (dual-licensed, with CLA) and "users of the core" (GPLed, like platform-specific for non-apple platforms, authentication related, crypto library interfaces, etc.)? "that sounds like a plan (and it sends the right signals to the community etc)" :-) - more work is needed to make good APIs for that