How does Transmission work with non-uPnP router?

Hey guys,

I'm on the road, and carrying the Dockstar with me. I'm at a hotel where the router has uPnP disable (I believe so last time I checked). I also have a travel wifi router with me and plug it in the wire to use as a private wifi network. My Dockstar is connected to this private network. On a whim, I started transmission on the Dockstar to try bittorrent downloading to see if it works. And amazingly, it does work! As I understood, transmission uses uPnP to request port forwarding, so how does it work in this case? did it just ignore the reponse status and tried to open it successfully?

My router has an acquired IP of 192.168.1.x so it is obviously behind a NAT in the main router.

Anybody who is familiar with transmission code/design can explain it? Much appreciate!

-bodhi
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Edited 1 time(s). Last edit at 01/10/2014 03:00AM by bodhi.

My guess would be it does not have a uPNP port open but torrent still works as long as the other end has an open port. Uploading would probably work fairly poorly, as would trying to connect to anyone else who could not find an external port.

Thanks for that observation. I'll look for whether any uploading is working at all to confirm.

-bodhi
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Did you tried with rtorrent and looked at the rtorrent logs libtorrent would better some better info on it.

dinjo Wrote:
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> Did you tried with rtorrent and looked at the
> rtorrent logs libtorrent would better some better
> info on it.

I've confirmed what optim said above. Download is fine but no upload at all.

-bodhi
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