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POPyro4 does not allow more than two clients to access one URI
 

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    <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>
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