On 12.04.2014 20:48, a. wrote: > I am trying to understand how rsync uses ssh. From what I understand of > the source, it simply opens a ssh connection and then simply pipes > rsync's data. But somehow my stomach tells me that this is not the whole > story. > > For one, that would mean the whole (?) of rsync's protocol is only used > for not-ssh transmission. The biggest question for me right now is, > whether rsync, when transmitting remotely over ssh, is binding sockets > of some kind or if it is completely dependent on ssh for that. > > For every bit of enlightenment in this regard I am very grateful!
rsync always works with 2 processes connected by a bidirectional connection, even when run localy. Rsync can use any method that provides such a bidirectional connection. Using ssh is only the "standard" way to do it. rsync is either used like this: Locally: rsync a <-> rsync b Or like this: Remote: rsync a <-> connector (e.g. ssh) <-> rsync b <-> means a bidirectional connection. Specifically or in effect it means that STDOUT from a is connected to STDIN from b and vice versa. -- Matthias -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
