On Thu, Dec 27, 2012 at 7:14 PM, Adam Chappell <[email protected]> wrote:
> I've realised, with a mixture of confusion and frustration, that the latest
> versions of node.js - 0.8.16 is what I'm using - no longer seems to support
> the passing of file descriptors across UNIX domain sockets.
>
> I was intending to use this functionality, along with an external "FD
> factory app" to receive SOCK_RAW sockets for a particularly bespoke Linux
> app, in order to capitalise on node.js's much acclaimed async I/O framework.
> It was no surprise to me that creation of SOCK_RAW sockets per se, wasn't
> supported, but I had held out some hope that if I could get the external app
> to create the socket, call the appropriate setsockopt's then pass the
> descriptor back to node.js, I would be able to make use of it in a similar
> fashion to a UDP/Datagram type socket.
>
> But alas, no, the 'fd' event, and even the 3-parameter socket.write() call
> appear to have disappeared, thwarting my attempts. I realise that a lot of
> work has gone on with child process support and clusters/workers, but this
> isn't quite my use case. I was simply hoping to interface with an external
> non-node.js app in order to receive an FD.
>
> Does anyone with any experience in this area, or any suggestions?  Is there
> another way to do what I am trying to do? (Ultimately, use node.js with a
> AF_UNIX SOCK_STREAM and an AF_INET SOCK_RAW on Linux).

You could write a small add-on that uses uv_poll_init() and friends to
watch the file descriptor.

If you model it after the v0.4 IOWatcher interface, you'll make a few
people quite happy.

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