From: "yermej@..." <yermej@...>
Date: 2007-08-29T00:40:18+09:00
Subject: Re: non-blocking socket in Ruby 1.8.4?

On Aug 27, 8:58 pm, "yer...@gmail.com" <yer...@gmail.com> wrote:
> I'm using Ruby 1.8.4 on Linux and I'm having trouble with non-blocking
> sockets. Socket#accept_nonblock doesn't exist and using fcntl to set
> O_NONBLOCK before calling accept doesn't seem to work. I've tried with
> TCPServer and Socket and accept blocks in both cases. What's the 1.8.4
> way to get non-blocking sockets?
>
> Some sample code:
>
> p = 8080
> socket = Socket.new Socket::AF_INET, Socket::SOCK_STREAM, 0
> sock_addr = Socket.pack_sockaddr_in p, '0.0.0.0'
> socket.bind sock_addr
> socket.listen SERVER_QUEUE_LENGTH
> original_flags = socket.fcntl Fcntl::F_GETFL, 0
> socket.fcntl(Fcntl::F_SETFL, original_flags | Fcntl::O_NONBLOCK)
> connection = socket.accept
>
> I first tried nearly the same thing, but used a TCPServer instead of a
> Socket and called fcntl as above before calling accept. In both
> examples, the accept call blocks.
>
> I'm new to socket programming so I'm probably just missing something.
> Any ideas? Maybe I'll just upgrade to 1.8.6.
>
> Thanks,
> Jeremy

OK, please disregard my previous message. I have something else wrong
as a minimal example using TCPServer and fcntl does result in a non-
blocking accept.

Now I think I'm hitting an issue with the fact that Ruby doesn't do
native threads.

Thanks,
Jeremy