Using shiny with UNIX domain sockets

In shiny’s source code ( I can see that the port argument to runApp supports more than just integers. In fact, it seems like it supports UNIX domain sockets, but the documentation does not mention how to use this. What do I need to pass to port in order to bind to a UNIX domain socket? I’ve tried rmarkdown::run(file = NULL, dir = ".", shiny_args=list(port=list("123", mask=384), quiet=FALSE)) (384 is octal for 0600), but it does not create a socket file.

Good catch! this seems to work

shiny::runApp("tmp.R", port=structure("tmp.sock", mask=384))

PS: I'm an R noob, I hope structure is the right function to use here.

Me too, but structure works, thanks!

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