def _set_bind_addr(self, value):
if isinstance(value, tuple) and value[0] in ('', None):
# Despite the socket module docs, using '' does not
# allow AI_PASSIVE to work. Passing None instead
# returns '0.0.0.0' like we want. In other words:
# host AI_PASSIVE result
# '' Y 192.168.x.y
# '' N 192.168.x.y
# None Y 0.0.0.0
# None N 127.0.0.1
# But since you can get the same effect with an explicit
# '0.0.0.0', we deny both the empty string and None as values.
raise ValueError("Host values of '' or None are not allowed. "
"Use '0.0.0.0' (IPv4) or '::' (IPv6) instead "
"to listen on all active interfaces.")
self._bind_addr = value
python类listen()的实例源码
def listen(self, port, address=""):
"""Starts accepting connections on the given port.
This method may be called more than once to listen on multiple ports.
`listen` takes effect immediately; it is not necessary to call
`TCPServer.start` afterwards. It is, however, necessary to start
the `IOLoop`.
"""
sockets = bind_sockets(port, address=address)
self.add_sockets(sockets)
def bind(self, port, address=None, family=socket.AF_UNSPEC, backlog=128):
"""Binds this server to the given port on the given address.
To start the server, call `start`. If you want to run this server
in a single process, you can call `listen` as a shortcut to the
sequence of `bind` and `start` calls.
Address may be either an IP address or hostname. If it's a hostname,
the server will listen on all IP addresses associated with the
name. Address may be an empty string or None to listen on all
available interfaces. Family may be set to either ``socket.AF_INET``
or ``socket.AF_INET6`` to restrict to ipv4 or ipv6 addresses, otherwise
both will be used if available.
The ``backlog`` argument has the same meaning as for
`socket.listen`.
This method may be called multiple times prior to `start` to listen
on multiple ports or interfaces.
"""
sockets = bind_sockets(port, address=address, family=family,
backlog=backlog)
if self._started:
self.add_sockets(sockets)
else:
self._pending_sockets.extend(sockets)
def bind_unix_socket(file, mode=0600, backlog=128):
"""Creates a listening unix socket.
If a socket with the given name already exists, it will be deleted.
If any other file with that name exists, an exception will be
raised.
Returns a socket object (not a list of socket objects like
`bind_sockets`)
"""
sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
set_close_exec(sock.fileno())
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.setblocking(0)
try:
st = os.stat(file)
except OSError, err:
if err.errno != errno.ENOENT:
raise
else:
if stat.S_ISSOCK(st.st_mode):
os.remove(file)
else:
raise ValueError("File %s exists and is not a socket", file)
sock.bind(file)
os.chmod(file, mode)
sock.listen(backlog)
return sock
def _set_bind_addr(self, value):
if isinstance(value, tuple) and value[0] in ('', None):
# Despite the socket module docs, using '' does not
# allow AI_PASSIVE to work. Passing None instead
# returns '0.0.0.0' like we want. In other words:
# host AI_PASSIVE result
# '' Y 192.168.x.y
# '' N 192.168.x.y
# None Y 0.0.0.0
# None N 127.0.0.1
# But since you can get the same effect with an explicit
# '0.0.0.0', we deny both the empty string and None as values.
raise ValueError("Host values of '' or None are not allowed. "
"Use '0.0.0.0' (IPv4) or '::' (IPv6) instead "
'to listen on all active interfaces.')
self._bind_addr = value
def _set_socket_host(self, value):
if value == '':
raise ValueError("The empty string ('') is not an allowed value. "
"Use '0.0.0.0' instead to listen on all active "
'interfaces (INADDR_ANY).')
self._socket_host = value
def _set_bind_addr(self, value):
if isinstance(value, tuple) and value[0] in ('', None):
# Despite the socket module docs, using '' does not
# allow AI_PASSIVE to work. Passing None instead
# returns '0.0.0.0' like we want. In other words:
# host AI_PASSIVE result
# '' Y 192.168.x.y
# '' N 192.168.x.y
# None Y 0.0.0.0
# None N 127.0.0.1
# But since you can get the same effect with an explicit
# '0.0.0.0', we deny both the empty string and None as values.
raise ValueError("Host values of '' or None are not allowed. "
"Use '0.0.0.0' (IPv4) or '::' (IPv6) instead "
"to listen on all active interfaces.")
self._bind_addr = value
def _set_bind_addr(self, value):
if isinstance(value, tuple) and value[0] in ('', None):
# Despite the socket module docs, using '' does not
# allow AI_PASSIVE to work. Passing None instead
# returns '0.0.0.0' like we want. In other words:
# host AI_PASSIVE result
# '' Y 192.168.x.y
# '' N 192.168.x.y
# None Y 0.0.0.0
# None N 127.0.0.1
# But since you can get the same effect with an explicit
# '0.0.0.0', we deny both the empty string and None as values.
raise ValueError("Host values of '' or None are not allowed. "
"Use '0.0.0.0' (IPv4) or '::' (IPv6) instead "
"to listen on all active interfaces.")
self._bind_addr = value
def _set_bind_addr(self, value):
if isinstance(value, tuple) and value[0] in ('', None):
# Despite the socket module docs, using '' does not
# allow AI_PASSIVE to work. Passing None instead
# returns '0.0.0.0' like we want. In other words:
# host AI_PASSIVE result
# '' Y 192.168.x.y
# '' N 192.168.x.y
# None Y 0.0.0.0
# None N 127.0.0.1
# But since you can get the same effect with an explicit
# '0.0.0.0', we deny both the empty string and None as values.
raise ValueError("Host values of '' or None are not allowed. "
"Use '0.0.0.0' (IPv4) or '::' (IPv6) instead "
"to listen on all active interfaces.")
self._bind_addr = value
def _set_bind_addr(self, value):
if isinstance(value, tuple) and value[0] in ('', None):
# Despite the socket module docs, using '' does not
# allow AI_PASSIVE to work. Passing None instead
# returns '0.0.0.0' like we want. In other words:
# host AI_PASSIVE result
# '' Y 192.168.x.y
# '' N 192.168.x.y
# None Y 0.0.0.0
# None N 127.0.0.1
# But since you can get the same effect with an explicit
# '0.0.0.0', we deny both the empty string and None as values.
raise ValueError("Host values of '' or None are not allowed. "
"Use '0.0.0.0' (IPv4) or '::' (IPv6) instead "
"to listen on all active interfaces.")
self._bind_addr = value
def listen(self, port, address=""):
"""Starts accepting connections on the given port.
This method may be called more than once to listen on multiple ports.
`listen` takes effect immediately; it is not necessary to call
`TCPServer.start` afterwards. It is, however, necessary to start
the `.IOLoop`.
"""
sockets = bind_sockets(port, address=address)
self.add_sockets(sockets)
def bind(self, port, address=None, family=socket.AF_UNSPEC, backlog=128):
"""Binds this server to the given port on the given address.
To start the server, call `start`. If you want to run this server
in a single process, you can call `listen` as a shortcut to the
sequence of `bind` and `start` calls.
Address may be either an IP address or hostname. If it's a hostname,
the server will listen on all IP addresses associated with the
name. Address may be an empty string or None to listen on all
available interfaces. Family may be set to either `socket.AF_INET`
or `socket.AF_INET6` to restrict to IPv4 or IPv6 addresses, otherwise
both will be used if available.
The ``backlog`` argument has the same meaning as for
`socket.listen <socket.socket.listen>`.
This method may be called multiple times prior to `start` to listen
on multiple ports or interfaces.
"""
sockets = bind_sockets(port, address=address, family=family,
backlog=backlog)
if self._started:
self.add_sockets(sockets)
else:
self._pending_sockets.extend(sockets)
def bind_unix_socket(file, mode=0o600, backlog=128):
"""Creates a listening unix socket.
If a socket with the given name already exists, it will be deleted.
If any other file with that name exists, an exception will be
raised.
Returns a socket object (not a list of socket objects like
`bind_sockets`)
"""
sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
set_close_exec(sock.fileno())
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.setblocking(0)
try:
st = os.stat(file)
except OSError as err:
if err.errno != errno.ENOENT:
raise
else:
if stat.S_ISSOCK(st.st_mode):
os.remove(file)
else:
raise ValueError("File %s exists and is not a socket", file)
sock.bind(file)
os.chmod(file, mode)
sock.listen(backlog)
return sock
def __init__(self, req_handler, fd=sys.stdin, port=None, max_requests=-1, backlog=5, max_threads=5):
"""Initialize main loop and set request_handler."""
self.req_handler = req_handler
self.fd = fd
self.__port = port
self._make_socket()
# how many requests we have left before terminating this process, -1 means infinite lifetime:
self.requests_left = max_requests
# for socket.listen(backlog):
self.backlog = backlog
# how many threads we have at maximum (including the main program = 1. thread)
self.max_threads = max_threads
def _make_socket(self):
"""Create socket and verify FCGI environment."""
try:
if self.__port:
if isinstance(self.__port, str):
try:
os.unlink(self.__port)
except:
pass
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.bind(self.__port)
# os.chmod(self.__port, 0660)
else:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
# bind to the localhost
s.bind(('127.0.0.1', self.__port))
s.listen(1)
else:
if hasattr(socket, 'fromfd'):
s = socket.fromfd(self.fd.fileno(), socket.AF_INET, socket.SOCK_STREAM)
s.getpeername()
else: # we do not run on posix, fire up an FCGI external process
raise ValueError("FastCGI port is not setup correctly")
except socket.error, (err, errmsg):
if err != errno.ENOTCONN:
raise RuntimeError("No FastCGI environment: %s - %s" % (repr(err), errmsg))
self.sock = s
def listen(self, port, address=""):
"""Starts accepting connections on the given port.
This method may be called more than once to listen on multiple ports.
`listen` takes effect immediately; it is not necessary to call
`TCPServer.start` afterwards. It is, however, necessary to start
the `.IOLoop`.
"""
sockets = bind_sockets(port, address=address)
self.add_sockets(sockets)
def bind(self, port, address=None, family=socket.AF_UNSPEC, backlog=128):
"""Binds this server to the given port on the given address.
To start the server, call `start`. If you want to run this server
in a single process, you can call `listen` as a shortcut to the
sequence of `bind` and `start` calls.
Address may be either an IP address or hostname. If it's a hostname,
the server will listen on all IP addresses associated with the
name. Address may be an empty string or None to listen on all
available interfaces. Family may be set to either `socket.AF_INET`
or `socket.AF_INET6` to restrict to IPv4 or IPv6 addresses, otherwise
both will be used if available.
The ``backlog`` argument has the same meaning as for
`socket.listen <socket.socket.listen>`.
This method may be called multiple times prior to `start` to listen
on multiple ports or interfaces.
"""
sockets = bind_sockets(port, address=address, family=family,
backlog=backlog)
if self._started:
self.add_sockets(sockets)
else:
self._pending_sockets.extend(sockets)
def bind_unix_socket(file, mode=0o600, backlog=_DEFAULT_BACKLOG):
"""Creates a listening unix socket.
If a socket with the given name already exists, it will be deleted.
If any other file with that name exists, an exception will be
raised.
Returns a socket object (not a list of socket objects like
`bind_sockets`)
"""
sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
set_close_exec(sock.fileno())
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.setblocking(0)
try:
st = os.stat(file)
except OSError as err:
if errno_from_exception(err) != errno.ENOENT:
raise
else:
if stat.S_ISSOCK(st.st_mode):
os.remove(file)
else:
raise ValueError("File %s exists and is not a socket", file)
sock.bind(file)
os.chmod(file, mode)
sock.listen(backlog)
return sock
def _set_bind_addr(self, value):
if isinstance(value, tuple) and value[0] in ('', None):
# Despite the socket module docs, using '' does not
# allow AI_PASSIVE to work. Passing None instead
# returns '0.0.0.0' like we want. In other words:
# host AI_PASSIVE result
# '' Y 192.168.x.y
# '' N 192.168.x.y
# None Y 0.0.0.0
# None N 127.0.0.1
# But since you can get the same effect with an explicit
# '0.0.0.0', we deny both the empty string and None as values.
raise ValueError("Host values of '' or None are not allowed. "
"Use '0.0.0.0' (IPv4) or '::' (IPv6) instead "
"to listen on all active interfaces.")
self._bind_addr = value
def listen(self, port, address=""):
"""Starts accepting connections on the given port.
This method may be called more than once to listen on multiple ports.
`listen` takes effect immediately; it is not necessary to call
`TCPServer.start` afterwards. It is, however, necessary to start
the `.IOLoop`.
"""
sockets = bind_sockets(port, address=address)
self.add_sockets(sockets)
