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127 lines
3.6 KiB
Python
127 lines
3.6 KiB
Python
# -*- coding: utf-8 -
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#
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# This file is part of gunicorn released under the MIT license.
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# See the NOTICE for more information.
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import errno
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import logging
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import os
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import socket
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import sys
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import time
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from gunicorn import util
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log = logging.getLogger(__name__)
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class BaseSocket(object):
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def __init__(self, conf, fd=None):
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self.conf = conf
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self.address = conf.address
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if fd is None:
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sock = socket.socket(self.FAMILY, socket.SOCK_STREAM)
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else:
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sock = socket.fromfd(fd, self.FAMILY, socket.SOCK_STREAM)
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self.sock = self.set_options(sock, bound=(fd is not None))
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def __str__(self, name):
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return "<socket %d>" % self.sock.fileno()
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def __getattr__(self, name):
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return getattr(self.sock, name)
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def set_options(self, sock, bound=False):
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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if not bound:
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self.bind(sock)
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sock.setblocking(0)
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sock.listen(self.conf['backlog'])
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return sock
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def bind(self, sock):
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sock.bind(self.address)
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class TCPSocket(BaseSocket):
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FAMILY = socket.AF_INET
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def __str__(self):
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return "http://%s:%d" % self.sock.getsockname()
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def set_options(self, sock, bound=False):
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if hasattr(socket, "TCP_CORK"):
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sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_CORK, 1)
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elif hasattr(socket, "TCP_NOPUSH"):
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sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NOPUSH, 1)
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sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
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return super(TCPSocket, self).set_options(sock, bound=bound)
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class UnixSocket(BaseSocket):
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FAMILY = socket.AF_UNIX
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def __init__(self, conf, fd=None):
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if fd is None:
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try:
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os.remove(conf.address)
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except OSError:
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pass
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super(UnixSocket, self).__init__(conf, fd=fd)
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def __str__(self):
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return "unix:%s" % self.address
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def bind(self, sock):
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old_umask = os.umask(self.conf['umask'])
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sock.bind(self.address)
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util.chown(self.address, self.conf.uid, self.conf.gid)
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os.umask(old_umask)
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def create_socket(conf):
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"""
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Create a new socket for the given address. If the
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address is a tuple, a TCP socket is created. If it
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is a string, a Unix socket is created. Otherwise
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a TypeError is raised.
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"""
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# get it only once
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addr = conf.address
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if isinstance(addr, tuple):
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sock_type = TCPSocket
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elif isinstance(addr, basestring):
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sock_type = UnixSocket
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else:
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raise TypeError("Unable to create socket from: %r" % addr)
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if 'GUNICORN_FD' in os.environ:
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fd = int(os.environ.pop('GUNICORN_FD'))
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try:
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return sock_type(conf, fd=fd)
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except socket.error, e:
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if e[0] == errno.ENOTCONN:
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log.error("GUNICORN_FD should refer to an open socket.")
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else:
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raise
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# If we fail to create a socket from GUNICORN_FD
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# we fall through and try and open the socket
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# normally.
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for i in range(5):
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try:
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return sock_type(conf)
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except socket.error, e:
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if e[0] == errno.EADDRINUSE:
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log.error("Connection in use: %s" % str(addr))
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if e[0] == errno.EADDRNOTAVAIL:
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log.error("Invalid address: %s" % str(addr))
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sys.exit(1)
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if i < 5:
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log.error("Retrying in 1 second.")
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time.sleep(1)
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log.error("Can't connect to %s" % str(addr))
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sys.exit(1)
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