From: Antonin AMAND <gwik@...>
Date: 2006-06-26T22:03:21+09:00
Subject: Blocking read after select

Hi,

I've some trouble reading an IO after a select


Here is the code.


while sock = tunnel.accept

  Thread.start(sock) do |s|

    ssl_sock = get_ssl_socket("ssl.gwikzone.org", 443)

    #set_non_blocking ssl_sock.to_io
    #set_non_blocking s.to_io
    STDERR.puts "thread start
#{Thread.current.object_id}/#{s.object_id}/#{ssl_sock.object_id}"

    while true
      STDERR.puts "select..."
      res = select([s, ssl_sock])

      unless res.nil?

        for rsock in res[0]
          #delete closed connections
          if rsock.eof? || ssl_sock.closed?
            s.close
            ssl_sock.close
            Thread.current.terminate
          end

          if rsock == s
            STDERR.puts "read s"
            buf = s.read
            STDERR.puts "s: \n#{send}"
            ssl_sock.write buf unless buf.nil? || buf.empty?
          end

          if rsock == ssl_sock
            STDERR.puts "read ssl"
            buf = rsock.read
            STDERR.puts "ssl: \n#{send}"
            s.write buf unless buf.nil? || buf.empty?
          end

        end #for
      end #unless
    end #while true
  end #Thread.start

end #while


output :

thread start 539408208/539408228/539408078
select...
read s
<<--- get stuck here

I tried to use non-blocking io but same thing happened which is very
strange.

Thank's for help

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