Have you tried wrapping it in a socket using new Socket({ fd: 11 })?
-Tim
Ryan Schmidt schreef op 05-11-14 om 04:18:
Does anyone have any thoughts on the below?
Or is there a better zero-downtime deployment module I should use instead of
naught that has already solved this problem of how to pass along a socket on a
file descriptor?
On Nov 2, 2014, at 6:32 PM, Ryan Schmidt wrote:
My server is started by another process that hands it a socket on file
descriptor 11. I start my server this way:
http.createServer(app).listen({fd: 11});
Now I want to modify this to enable zero-downtime deployments, so I would like to have
naught start my server. The question is: how can I get naught to pass fd 11 to my script
so that I can listen on it? Or, how do I "connect" naught's fd 11 with my
script's fd 11?
I have tried modifying naught's spawn invocation so that it reads:
var stdio = [process.stdin, stdoutValue, stderrValue, 'ipc'];
stdio[11] = 11;
master = spawn(process.execPath, nodeArgs.concat([path.join(__dirname,
"master.js"), workerCount, script]).concat(argv), {
env: process.env,
stdio: stdio,
cwd: process.cwd(),
});
Basically I have added "stdio[11] = 11;" However this doesn't seem to be working. My server is
failing to listen, getting the error "Error: listen ENOTSOCK". The node documentation says a
positive integer in the stdio array "is interpreted as a file descriptor that is is currently open in
the parent process. It is shared with the child process". I'm wondering if the problem is that the file
descriptor, though available to my parent process, is not open yet. If so, how should I open it? Just fs.open?
Is there some way for naught (or any process) to know which fds are being made
available to it, and pass them on to the child without needing to be told what
they are? Is it possible for a process to automatically pass all fds to a child
without having to enumerate them?
I have also filed this issue as a naught ticket but haven't heard back yet:
https://github.com/andrewrk/naught/issues/65
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