VIP 17: Enable Unix domain sockets for listen and backend addresses

Synopsis

Allow Unix Domain Sockets (UDS) as listen addresses for Varnish (-a option) and as addresses for backends. Ideally also obtain credentials of the peer process connected on a UDS, such as uid and gid, for use in VCL.

Named listen addresses

This is not directly related to UDS, but this change would solve some of the problems and mitigate some the complexity raised by the original draft. Because this change has already been accepted, there is no VIP to link to, and no documentation to refer to until it is implemented. For convenience it is described here.

TODO

Why?

TODO

How?

TODO