Re: Lua, threading & sockets

[Daurnimator <quae@...>]

On 19 September 2014 17:18, Rena <hyperhacker@gmail.com> wrote:

The way I dealt with threading+sockets in one case was to modify

LuaSocket to expose the `fd` field of the socket objects and to add a
`socket.fromfd()` function. Then you can pass the fd (an integer) from
one thread to another, and the receiving thread can create its own
socket object.

A better choice (architecturally) is to use SCM_RIGHTS (on linux) to pass the file descriptor from one process to another.

Sadly, I don't know of any good integrations with luasocket or lanes on this front.

In fact, the only lua related SCM_RIGHTS code around I know of is undocumented inside of ljsyscall:

https://github.com/justincormack/ljsyscall/blob/358b49c16f31cbbe8bf43d4fcf96217144e3aa04/syscall/types.lua#L383