Hello everyone,
As a newbie with too much java-experience, I found it strange that I
couldn’t interrupt the Kernel::select.
Basically what I wanted to do would be to interrupt the select as
soon as a socket decided it wanted to write something, and then add
that channel to the write-interest array.
I found no obvious way of doing that, so I made a hack around it: I
registered a pipe with the read-interest and every time I wanted to
write something then I would send a single byte on the pipe, which
would interrupt the select and allow me to register the socket with
the array.
I.e. something like this:
8<-------------
@notifier, @requester = IO.pipe # this is my hack
puts "Server started on port #{port} with handler #{@delegate}."
while (true)
@read = [@server, @notifier]
@write = Array.new
@error = [@server]
@connections.each do |connection|
@read << connection.io if connection.read
@write << connection.io if connection.write
@error << connection.io if connection.read
end
read, write, error = Kernel::select(@read, @write, @error)
@connections.each do |connection|
connection.handle_read if read.include? connection.io
connection.handle_write if write.include? connection.io
connection.handle_error if error.include? connection.io
end
@notifier.getc if read.include? @notifier
handle_connect if read.include? @server
end
8<------------------
def poke
#this is a hack to interrupt Kernel::select
puts "Poking!"
@requester.putc "!"
end
8<------------------
Please tell me there’s a better way! 
/Christoffer