[p2p-hackers] question on BT

[Hal Finney]

D. writes:
> Hi all,
> reading the protcol specs of Bittorrent I don't understand if once a
> peer A connects to a peer B through a socket S what are their roles:
>
> 1. A downloads and B uploads. If B wants to download a piece from A
> then B must connect to A with a new socket S2
> 2. Both A and B can download/upload from each other using S

They both download and upload using the same socket.

H.