MiNode/minode/listener.py

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# -*- coding: utf-8 -*-
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"""Listener thread creates connection objects for incoming connections"""
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import logging
import socket
import threading
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from . import shared
from .connection import Connection
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class Listener(threading.Thread):
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"""The listener thread"""
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def __init__(self, host, port, family=socket.AF_INET):
super().__init__(name='Listener')
self.host = host
self.port = port
self.family = family
self.s = socket.socket(self.family, socket.SOCK_STREAM)
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self.s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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self.s.bind((self.host, self.port))
self.s.listen(1)
self.s.settimeout(1)
def run(self):
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while True:
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if shared.shutting_down:
logging.debug('Shutting down Listener')
break
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try:
conn, addr = self.s.accept()
except socket.timeout:
continue
logging.info('Incoming connection from: %s:%i', *addr[:2])
with shared.connections_lock:
if len(shared.connections) > shared.connection_limit:
conn.close()
else:
c = Connection(*addr[:2], conn, server=True)
c.start()
shared.connections.add(c)