50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
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import select
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from ..base_server import BaseServer
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class SelectServer(BaseServer):
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def __init__(self, *args, **kwargs):
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super(SelectServer, self).__init__(*args, **kwargs)
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self._reads = set(self._servers)
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self._writes = set()
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def _register_write(self, client):
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self._writes.add(client)
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def _register_read(self, client):
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self._writes.remove(client)
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def _clean_up_client(self, client, finalize=False):
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self._writes.discard(client)
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self._reads.remove(client)
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super(SelectServer, self)._clean_up_client(client, finalize)
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def _serve(self, select=select.select):
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for server in self._servers:
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server.listen(16)
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try:
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while not self._stop.is_set():
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r, w, x = select(self._reads, self._writes, self._reads, self._dispatch_event())
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for s in r:
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if s in self._servers:
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self._reads.add(self._accept(s))
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else:
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self._nonblock_read(s)
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for client in w:
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self._nonblock_write(client)
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for s in x:
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s.close()
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if s in self._servers:
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raise RuntimeError('Server is in exceptional condition')
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else:
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self._clean_up_client(s)
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finally:
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self.on_shutdown()
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for client in self._clients:
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self._clean_up_client(client, True)
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for server in self._servers:
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server.close()
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