From: Joseph McDonald <joe@...>
Date: 2001-06-22T11:18:53+09:00
Subject: [ruby-talk:16737] socket bug


  I'm trying to track down a problem with sockets that I'm having.  I
  am getting a couple of different errors.

  Here is the server:

#!/usr/local/bin/ruby

require 'socket'

trap("CLD") {
  pid = Process.wait
}

s = TCPServer.new("0.0.0.0",6666)
while(new_sock = s.accept)
  pid = fork
  if(pid == nil)
    line = new_sock.gets
    new_sock.print("got #{line}\n")
    new_sock.shutdown
    exit
  end
end
s.close

  Here is the client:
#!/usr/local/bin/ruby

require 'socket'

1.upto(100000) do |x|
  puts x
  w1 = TCPsocket.open("127.0.0.1", 6666)
  w1.print "hello server\n"
  ans1 = w1.readlines.to_s
  w1.shutdown
end



Sometimes the server will get errors such as:
./socketbug.rb
./socketbug.rb:6:in `wait': No child processes (Errno::ECHILD)
        from ./socketbug.rb:6
        from ./socketbug.rb:5:in `call'
        from ./socketbug.rb:11

I've also seen this from the server:
./socketbug.rb
./socketbug.rb:10:in `accept': Bad file descriptor (Errno::EBADF)
        from ./socketbug.rb:10
        
        
Sometimes the client will bomb out with:
1198
./client.rb:7:in `open': No buffer space available - "socket(2)" (Errno::ENOBUFS)
        from ./socketbug2.rb:7
        from ./socketbug2.rb:5:in `upto'
        from ./socketbug2.rb:5

Sometimes the client will bomb out with:

./client.rb:7: [BUG] Segmentation fault
ruby 1.6.4 (2001-06-04) [i386-freebsdelf4.3]
Abort trap

Anybody else experience something similiar?

thanks,
-joe