Thread Questions

ruby-talk
1

Hello,

I would like to write a little TCPServer which communicates with
another ruby program on another computer.

So i tried all with TCPServer. I could connect and it worked, but i
want to execute it in a thread and now the program halts when i open
the server.

i use ruby 1.8 for windows. does this matter in that case?

best regards
Max Kuffs

My source:

require 'socket'

SERVER_PORT = 4772
LISTEN_ON = '0.0.0.0'

srv = Thread.new(){
       ss=TCPServer.new LISTEN_ON,SERVER_PORT
       con=ss.accept
       while !con.eof?
        puts con.gets
       end
}

while true do
       puts "Cycle"
       if srv.stop? then
               # Restarting Thread if died
               puts "Restarting Server Thread!"
               srv.run
       end
       puts "sleeep-----------------------------------------"
       sleep 5

end

2

"Max Kuffs" <newsgroup.20.max_kuffs@spamgourmet.com> schrieb im Newsbeitrag
news:410bc141$0$10406$91cee783@newsreader01.highway.telekom.at...

Hello,

I would like to write a little TCPServer which communicates with
another ruby program on another computer.

So i tried all with TCPServer. I could connect and it worked, but i
want to execute it in a thread and now the program halts when i open
the server.

You got the logic wrong: typically you want to serve each client in a
separate thread. Try this:

require 'socket'

SERVER_PORT = 4772
LISTEN_ON = '0.0.0.0'

server = TCPServer.new LISTEN_ON, SERVER_PORT
clients = 0

while true
  Thread.new( server.accept, clients += 1 ) do |con, clnt|
    puts "Connect with client #{clnt}"
    while ( line = ( con.gets ) )
      puts "From client #{clnt}: #{line}"
    end
    puts "EOF #{clnt}"
  end
end

Note: I introduced "clients" and "clnt" just for the purpose of
distinguishing output from different clients.

Kind regards

    robert

3

thank you very much!
the example helped, i think i understand why it didn't work the way i
wanted.

regards
max kuffs

Robert Klemme wrote:

···

"Max Kuffs" <newsgroup.20.max_kuffs@spamgourmet.com> schrieb im Newsbeitrag
news:410bc141$0$10406$91cee783@newsreader01.highway.telekom.at...

Hello,

I would like to write a little TCPServer which communicates with
another ruby program on another computer.

So i tried all with TCPServer. I could connect and it worked, but i
want to execute it in a thread and now the program halts when i open
the server.

You got the logic wrong: typically you want to serve each client in a
separate thread. Try this:

require 'socket'

SERVER_PORT = 4772
LISTEN_ON = '0.0.0.0'

server = TCPServer.new LISTEN_ON, SERVER_PORT
clients = 0

while true
Thread.new( server.accept, clients += 1 ) do |con, clnt|
   puts "Connect with client #{clnt}"
   while ( line = ( con.gets ) )
     puts "From client #{clnt}: #{line}"
   end
   puts "EOF #{clnt}"
end
end

Note: I introduced "clients" and "clnt" just for the purpose of
distinguishing output from different clients.

Kind regards

   robert