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# Copyright (c) 2018 gevent community
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
from __future__ import absolute_import, print_function, division
from .params import DEFAULT_BIND_ADDR_TUPLE
def bind_and_listen(sock, address=DEFAULT_BIND_ADDR_TUPLE, backlog=50, reuse_addr=True):
from socket import SOL_SOCKET, SO_REUSEADDR, error
if reuse_addr:
try:
sock.setsockopt(SOL_SOCKET, SO_REUSEADDR,
sock.getsockopt(SOL_SOCKET, SO_REUSEADDR) | 1)
except error:
pass
sock.bind(address)
sock.listen(backlog)
def tcp_listener(address=DEFAULT_BIND_ADDR_TUPLE, backlog=50, reuse_addr=True):
"""A shortcut to create a TCP socket, bind it and put it into listening state."""
from gevent import socket
sock = socket.socket()
bind_and_listen(sock, address, backlog=backlog, reuse_addr=reuse_addr)
return sock