title: Pyro4 does not allow more than two clients to access one URI
body: <p>I am creating a turn based strategy game in Python using pygame. I found writing sockets incredibly difficult, so I turned to Pyro for sharing the state of the game board. However, Pyro seems unable to support more than 2 connections at a time.</p>
  
  <p>I am running a nameserver on localhost via</p>
  
  <pre><code>python -m Pyro4.naming
  </code></pre>
  
  <p>Test case 'server':</p>
  
  <pre><code>import Pyro4
  class Testcase:
      def __init__(self):
          self.values = [1, 2, 3, 10, 20, 30]
  
      def askvalue(self, i):
          return self.values[i]
  
  
  daemon = Pyro4.Daemon()
  ns = Pyro4.locateNS()
  
  uri = daemon.register(Testcase())
  ns.register("thetest", uri)
  daemon.requestLoop()
  </code></pre>
  
  <p>and the clients:</p>
  
  <pre><code>import Pyro4, time
  
  ns = Pyro4.locateNS()
  
  casetester = Pyro4.Proxy("PYRONAME:thetest")
  
  while True:
      print "Accessing remote object:"
      print casetester.askvalue(1)
      print "staying busy"
      time.sleep(10)
  </code></pre>
  
  <p>Output from the first two clients:</p>
  
  <pre><code>/usr/local/lib/python2.7/dist-packages/Pyro4-4.14-py2.7.egg/Pyro4/core.py:155: UserWarning: HMAC_KEY not set, protocol data may not be secure
    warnings.warn("HMAC_KEY not set, protocol data may not be secure")
  Accessing remote object:
  2
  staying busy
  Accessing remote object:
  2
  staying busy
  </code></pre>
  
  <p>and repeats</p>
  
  <p>Output from the third client:</p>
  
  <pre><code>/usr/local/lib/python2.7/dist-packages/Pyro4-4.14-py2.7.egg/Pyro4/core.py:155: UserWarning: HMAC_KEY not set, protocol data may not be secure
    warnings.warn("HMAC_KEY not set, protocol data may not be secure")
  Accessing remote object:
  </code></pre>
  
  <p>and hangs.</p>
  
  <p>Output from the fourth, fifth (and presumably all beyond) client:</p>
  
  <pre><code>/usr/local/lib/python2.7/dist-packages/Pyro4-4.14-py2.7.egg/Pyro4/core.py:155: UserWarning: HMAC_KEY not set, protocol data may not be secure
    warnings.warn("HMAC_KEY not set, protocol data may not be secure")
  </code></pre>
  
  <p>At this stage, I give the nameserver a ^C, and clients 3, 4, ... give this output and crash:</p>
  
  <pre><code>Traceback (most recent call last):
    File "client.py", line 3, in &lt;module&gt;
      ns = Pyro4.locateNS()
    File "/usr/local/lib/python2.7/dist-packages/Pyro4-4.14-py2.7.egg/Pyro4/naming.py", line 323, in locateNS
      raise Pyro4.errors.NamingError("Failed to locate the nameserver")
  Pyro4.errors.NamingError: Failed to locate the nameserver
  </code></pre>
  
  <p>Meanwhile clients 1 and 2 stay busy.</p>
  
  <p>However, breaking one of the active clients will let one of the hung up ones start to operate.</p>
  
  <p>I have tried via "export PYRO_SERVERTYPE = multiplex" to switch away from threading, but this did not change the behavior. The setting for maximum connections seems to be 200. Setting it to 1000 did not resolve my issue either.</p>
  
  <p>I've read that Pyro lacks scalability, but surely I will be able to get to at least 10 connections?</p>
  
  <p>How can I connect more than two clients at a time to a Pyro4 object? </p>