def test_add(self):
import select
client, server = self.socket_pair()
ep = select.epoll(2)
ep.register(server, select.EPOLLIN | select.EPOLLOUT)
ep.register(client, select.EPOLLIN | select.EPOLLOUT)
ep.close()
# adding by object w/ fileno works, too.
ep = select.epoll(2)
ep.register(server.fileno(), select.EPOLLIN | select.EPOLLOUT)
ep.register(client.fileno(), select.EPOLLIN | select.EPOLLOUT)
ep.close()
ep = select.epoll(2)
# TypeError: argument must be an int, or have a fileno() method.
raises(TypeError, ep.register, object(), select.EPOLLIN | select.EPOLLOUT)
raises(TypeError, ep.register, None, select.EPOLLIN | select.EPOLLOUT)
# ValueError: file descriptor cannot be a negative integer (-1)
raises(ValueError, ep.register, -1, select.EPOLLIN | select.EPOLLOUT)
# IOError: [Errno 9] Bad file descriptor
raises(IOError, ep.register, 10000, select.EPOLLIN | select.EPOLLOUT)
# registering twice also raises an exception
ep.register(server, select.EPOLLIN | select.EPOLLOUT)
raises(IOError, ep.register, server, select.EPOLLIN | select.EPOLLOUT)
ep.close()
def test_add(self):
server, client = self._connected_pair()
ep = select.epoll(2)
try:
ep.register(server.fileno(), select.EPOLLIN | select.EPOLLOUT)
ep.register(client.fileno(), select.EPOLLIN | select.EPOLLOUT)
finally:
ep.close()
# adding by object w/ fileno works, too.
ep = select.epoll(2)
try:
ep.register(server, select.EPOLLIN | select.EPOLLOUT)
ep.register(client, select.EPOLLIN | select.EPOLLOUT)
finally:
ep.close()
ep = select.epoll(2)
try:
# TypeError: argument must be an int, or have a fileno() method.
self.assertRaises(TypeError, ep.register, object(), select.EPOLLIN | select.EPOLLOUT)
self.assertRaises(TypeError, ep.register, None, select.EPOLLIN | select.EPOLLOUT)
# ValueError: file descriptor cannot be a negative integer (-1)
self.assertRaises(ValueError, ep.register, -1, select.EPOLLIN | select.EPOLLOUT)
# IOError: [Errno 9] Bad file descriptor
self.assertRaises(IOError, ep.register, 10000, select.EPOLLIN | select.EPOLLOUT)
# registering twice also raises an exception
ep.register(server, select.EPOLLIN | select.EPOLLOUT)
self.assertRaises(IOError, ep.register, server, select.EPOLLIN | select.EPOLLOUT)
finally:
ep.close()
def main():
args = aux.parse_args('Echo server with epoll-processing model.')
server_socket = aux.listening_socket(args.port)
server_fileno = server_socket.fileno()
fileno_to_data = {}
fileno_to_socket = {}
read_epoll = select.epoll()
read_epoll.register(server_fileno, select.EPOLLIN)
while True:
for fileno, eventmask in read_epoll.poll(0.05):
if fileno == server_fileno:
client_socket, _ = server_socket.accept()
client_fileno = client_socket.fileno()
fileno_to_data[client_fileno] = ''
fileno_to_socket[client_fileno] = client_socket
read_epoll.register(client_fileno, select.EPOLLIN)
else:
client_socket = fileno_to_socket[fileno]
data = client_socket.recv(1024)
if not data:
read_epoll.unregister(fileno)
del fileno_to_data[fileno]
del fileno_to_socket[fileno]
client_socket.close()
else:
fileno_to_data[fileno] += data
check_writability = [f for f, d in fileno_to_data.iteritems() if d]
if not check_writability:
continue
write_epoll = select.epoll()
for fileno in check_writability:
write_epoll.register(fileno, select.EPOLLOUT)
for fileno, eventmask in write_epoll.poll(0.05):
if eventmask & (select.EPOLLERR | select.EPOLLHUP):
read_epoll.unregister(fileno)
fileno_to_socket[fileno].close()
del fileno_to_data[fileno]
del fileno_to_socket[fileno]
continue
client_socket = fileno_to_socket[fileno]
data = fileno_to_data[fileno]
n = client_socket.send(data)
if n > 0:
fileno_to_data[fileno] = data[n:]
write_epoll.close()
def __init__(self, pipe): if isinstance(pipe, int): fd = self._fd = pipe pipe = os.fromfd(pipe) else: fd = self._fd = pipe.fileno() self._poll_in, self._poll_out = epoll(), epoll() self._poll_in.register(fd, EPOLLIN | EPOLLERR | EPOLLHUP) self._poll_out.register(fd, EPOLLOUT | EPOLLERR | EPOLLHUP) self.close = pipe.close self.reads = pipe.read self.writes = pipe.write
def setup_class(cls):
cls.space = gettestobjspace(usemodules=["select", "_socket", "posix"])
import errno
import select
if not hasattr(select, "epoll"):
py.test.skip("test requires linux 2.6")
try:
select.epoll()
except IOError, e:
if e.errno == errno.ENOSYS:
py.test.skip("kernel doesn't support epoll()")
def test_create(self):
try:
ep = select.epoll(16)
except OSError as e:
raise AssertionError(str(e))
self.assertTrue(ep.fileno() > 0, ep.fileno())
self.assertTrue(not ep.closed)
ep.close()
self.assertTrue(ep.closed)
self.assertRaises(ValueError, ep.fileno)
if hasattr(select, "EPOLL_CLOEXEC"):
select.epoll(select.EPOLL_CLOEXEC).close()
self.assertRaises(OSError, select.epoll, flags=12356)
def __init__(self, pipe, leash=None):
fd = self._fd = pipe.fileno()
if leash:
self.__leash = leash # fd source object, leashed here to stop gc
self._poll_in, self._poll_out = epoll(), epoll()
self._poll_in.register(fd, EPOLLIN)
self._poll_out.register(fd, EPOLLOUT)
self.close = pipe.close
try: # file
self.reads = pipe.read
self.writes = pipe.write
except AttributeError: # socket
self.reads = pipe.recv
self.writes = pipe.send
def __iter__(self):
"""
Wait for incoming events and receive them upon arrival.
This methods implicitly calls :meth:`start()`, and starts polling the
:meth:`fileno` of this monitor. If a event comes in, it receives the
corresponding device and yields it to the caller.
The returned iterator is endless, and continues receiving devices
without ever stopping.
Yields ``(action, device)`` (see :meth:`receive_device` for a
description).
.. deprecated:: 0.16
Will be removed in 1.0. Use an explicit loop over :meth:`poll()`
instead, or monitor asynchronously with :class:`MonitorObserver`.
"""
import warnings
warnings.warn('Will be removed in 1.0. Use an explicit loop over '
'"poll()" instead, or monitor asynchronously with '
'"MonitorObserver".', DeprecationWarning)
self.start()
with closing(select.epoll()) as notifier:
notifier.register(self, select.EPOLLIN)
while True:
events = notifier.poll()
for event in events:
device = self._receive_device()
yield device.action, device
def epoll_response():
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setblocking(False)
server.bind((HOST,PORT))
server.listen(1024)
READ_ONLY = select.EPOLLIN | select.EPOLLPRI
epoll = select.epoll()
epoll.register(server, READ_ONLY)
timeout = 60
fd_to_socket = {server.fileno():server}
while True:
events = epoll.poll(timeout)
for fd,flag in events:
sock = fd_to_socket[fd]
if flag & READ_ONLY:
if sock is server:
conn, client_address = sock.accept()
conn.setblocking(False)
fd_to_socket[conn.fileno()] = conn
epoll.register(conn, READ_ONLY)
else:
request = sock.recv(BUFFER_SIZE)
sock.send(response)
sock.close()
del fd_to_socket[fd]
def __collect_piece(self, ips, headers, origin_urls):
# create sockets
fd_2_sock = {}
fd_2_req = {}
fd_2_data = {}
for i in xrange(len(ips)):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setblocking(0)
fd_2_sock[sock.fileno()] = sock
fd_2_req[sock.fileno()] = Request(ips[i], headers[i], origin_urls[i])
print "Create %d Sockets Finished!" % len(fd_2_sock.items())
# create listener
epoll = select.epoll()
# non-blocking connect
for (fd, sock) in fd_2_sock.items():
try:
sock.connect( (fd_2_req[fd].ip, 80) )
except Exception, e:
if e.args[0] == 115:
epoll.register(fd, select.EPOLLOUT)
else:
print "[Connection Error] Url %s : %s" % (fd_2_req[fd].origin_url, str(e))
def __init__(self):
self.epoll = select.epoll()
# TODO should we set any other masks?
# http://docs.python.org/library/select.html#epoll-objects
self.READ_MASK = select.EPOLLIN | select.EPOLLPRI
self.WRITE_MASK = select.EPOLLOUT
self.ERR_MASK = select.EPOLLERR | select.EPOLLHUP
def __init__(self, *cmds):
self._lock = Lock()
self._members = {}
self._poller = epoll()
for cmd in cmds:
self.create_process(cmd)
def __init__(self, popenToWrap):
self._streamLock = threading.Lock()
self._proc = popenToWrap
self._stdout = StringIO()
self._stderr = StringIO()
self._stdin = StringIO()
fdout = self._proc.stdout.fileno()
fderr = self._proc.stderr.fileno()
self._fdin = self._proc.stdin.fileno()
self._closedfds = []
self._poller = select.epoll()
self._poller.register(fdout, select.EPOLLIN | select.EPOLLPRI)
self._poller.register(fderr, select.EPOLLIN | select.EPOLLPRI)
self._poller.register(self._fdin, 0)
self._fdMap = {fdout: self._stdout,
fderr: self._stderr,
self._fdin: self._stdin}
self.stdout = io.BufferedReader(self._streamWrapper(self,
self._stdout, fdout), BUFFSIZE)
self.stderr = io.BufferedReader(self._streamWrapper(self,
self._stderr, fderr), BUFFSIZE)
self.stdin = io.BufferedWriter(self._streamWrapper(self,
self._stdin, self._fdin), BUFFSIZE)
self._returncode = None
self.blocking = False
def __init__( self, sett ):
self._evpoll = select.epoll()
h.set_close_exec( self._evpoll.fileno() )
self.poll_threshold = sett['poll_threshold']
self.poll_timeout = sett['poll_timeout']
# Book keeping
self._handlers = {}
"""A map of polled descriptor and callback handlers."""
self._events = {}
self._callbacks = []
self._callback_lock = threading.Lock()
"""Lock object to handle ioloop callbacks in a multi-threaded
environment."""
self._timeouts = []
"""A heap queue list to manage timeout events and its callbacks."""
self._running = False
"""Initialized to True when start() is called and set to False to
indicate that stop() is called."""
self._stopped = False
"""Set to True when stop() is called and reset to False when start()
exits."""
self._thread_ident = None
self._blocking_signal_threshold = None
self._waker = Waker()
"""Create a pipe that we send bogus data to when we want to wake
the I/O loop when it is idle."""
# log.debug( "Adding poll-loop waker ..." )
self.add_handler(
self._waker.fileno(), lambda fd, events: self._waker.consume(),
self.READ )
def epoll_poller(timeout=0.0, map=None):
"""A poller which uses epoll(), supported on Linux 2.5.44 and newer."""
if map is None:
map = socket_map
pollster = select.epoll()
if map:
for fd, obj in map.items():
flags = 0
if obj.readable():
flags |= select.POLLIN | select.POLLPRI
if obj.writable():
flags |= select.POLLOUT
if flags:
# Only check for exceptions if object was either readable
# or writable.
flags |= select.POLLERR | select.POLLHUP | select.POLLNVAL
pollster.register(fd, flags)
try:
r = pollster.poll(timeout)
except select.error, err:
if err.args[0] != EINTR:
raise
r = []
for fd, flags in r:
obj = map.get(fd)
if obj is None:
continue
readwrite(obj, flags)
def __init__(self, addr, port, logic):
dbgPrint("\n__init__: start!")
#初始化状态字典
self.conn_state = {}
#初始化socket对象，tcp/ipv4 类型
self.listen_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
self.listen_sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.listen_sock.bind((addr, port))
self.listen_sock.listen(10)
#使用setFd设置socket状态,4个头,读写缓冲，将当前scoket状态类放入字典中
#并打印当前scoket状态
self.setFd(self.listen_sock)
self.epoll_sock = select.epoll()
#注册 listen_sock 至epollin interface
self.epoll_sock.register(self.listen_sock.fileno(), select.EPOLLIN)
self.logic = logic
#初始化状态机字典
self.sm = {
"accept" : self.accept2read,
"read" : self.read2process,
"write" : self.write2read,
"process": self.process,
"closing": self.close,
}
dbgPrint("\n__init__: end, register no: %s" %
self.listen_sock.fileno())
def __init__(self, paths):
self.reactor = epoll()
self.devices = map(Device, paths)
self.fds = map(op.attrgetter('fd'), self.devices)
for fd in self.fds: self.reactor.register(fd, EPOLLIN)
self.packet_size = Event.get_format_size()
log.debug('DevGroup init: %r, %s'%(self, self.devices))
def wait_for_pin_state_changes(readers_by_name, devices_by_name):
fds_to_pins = {}
# Fetch a list of pins to watch, each of which maps to
# a card reader
pin_objects_to_watch = build_hardware_pin_map(readers_by_name)
# Configure the select handler, setting it to watch the
# filedescriptors that underly the hardware pins.
# To do this, we grab the filedescriptors that underly the
# pins, and build a map between filedescriptors and objects
epoll_handler = select.epoll()
for pin_num in pin_objects_to_watch:
handler_object = pin_objects_to_watch[pin_num]['handler_object']
gpio_pin = pin_objects_to_watch[pin_num]['gpio_pin']
epoll_handler.register(gpio_pin, select.EPOLLET)
fds_to_pins[gpio_pin.fileno()] = pin_num
# Loop forever, waiting for pin state changes, and triggering the
# pins based on their values
while True:
logging.debug("Waiting for event on reader pins")
events = epoll_handler.poll()
for filedescriptor, event in events:
pin_no = fds_to_pins[filedescriptor]
logging.debug("Got event on pin number %s" % pin_no)
pin_value = pin_objects_to_watch[pin_no]['gpio_pin'].value
pin_objects_to_watch[pin_no]['handler_object'].trigger_pin_state_change(
pin_value, devices_by_name)
def main():
ip_list = ("127.0.0.1", "127.0.0.2", "127.0.0.3", "127.0.0.4")
client_infos = {}
e = select.epoll()
# Fork all ssh for clients and register all sockets
for ip in ip_list:
p = subprocess.Popen(['./yes.py'], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
(fh_in, fh_out) = (p.stdout, p.stdin)
client_infos[fh_in.fileno()] = (fh_in, fh_out, ip, 0)
e.register(fh_in)
# Main read loop
try:
while True:
events = e.poll(1)
logging.debug("events : %s"%events)
for fileno, event_type in events:
(fh_in, fh_out, ip, current_block_number) = client_infos[fileno]
if event_type & select.EPOLLIN:
msg = fh_in.read(1)
process_msg(msg, fh_out, ip, current_block_number)
current_block_number += 1
client_infos[fileno] = (fh_in, fh_out, ip, current_block_number)
else:
logging.debug("Evt d'un type non gere : %i"%event_type)
finally:
logging.debug("Fermeture de tous les sockets")
for fileno in client_infos:
fh_in = client_infos[fileno][0]
e.unregister(fh_in)
fh_in.close()
e.close()
def __init__(self, RequestHandlerClass):
if not hasattr(self, "ServerName"):
self.ServerName = "Eloipool"
self.RequestHandlerClass = RequestHandlerClass
self.running = False
self.keepgoing = True
self.rejecting = False
self._epoll = select.epoll()
self._fd = {}
self.connections = {}
self._sch = ScheduleDict()
self._schEH = {}
if self.schMT:
self._schLock = threading.Lock()
else:
self._schLock = WithNoop
self.TrustedForwarders = ()
if self.waker:
(r, w) = os.pipe()
o = _Waker(self, r)
self.register_socket(r, o)
self.waker = w
def run_main(listen_fd):
try:
epoll_fd = select.epoll()
epoll_fd.register(listen_fd.fileno(), select.EPOLLIN | select.EPOLLERR | select.EPOLLHUP)
print "listen_fd:%s" % listen_fd.fileno()
except select.error, msg:
logger.error(msg)
def mainloop(self):
self.socket.setblocking(0) # Non blocking socket server
self.clients = {}
self.epoll = select.epoll()
self.epoll.register(self.socket.fileno(), select.EPOLLIN) # Level triggerred
while True:
if self.shutdown: # Gracefully shutdown
break
events = self.epoll.poll(1) # Timeout 1 second
for fileno, event in events:
try:
if fileno == self.socket.fileno(): # New connection on server socket
self.accept_clients()
elif event & select.EPOLLIN: # Although it's level triggerred, read or write as more as possible
self.epoll_in(fileno)
elif event & select.EPOLLOUT:
self.epoll_out(fileno)
elif event & select.EPOLLHUP:
self.epoll_hup(fileno)
except socket.error, err:
debug('epoll event exception: %s', err)
if err.errno == 11: # Catch the Errno
pass
else:
raise
def setdirection(self,val):
if val in ['in','out']:
if os.access(gpio_path+self.name+'/direction', os.W_OK):
fdir=open(gpio_path+self.name+'/direction','w+',0)
fdir.write(val)
fdir.close()
try:
self.epoll_obj.unregister(self.fvalue)
self.fvalue.close()
except:
pass
if val=='in' and os.access(gpio_path+self.name+'/value', os.W_OK):
self.fvalue=open(gpio_path+self.name+'/value')
if val=='out' and os.access(gpio_path+self.name+'/value', os.W_OK):
self.fvalue=open(gpio_path+self.name+'/value','w+',0)
if os.access(gpio_path+self.name+'/edge', os.W_OK) and val=='in':
self.epoll_obj=select.epoll()
self.epoll_obj.register(self.fvalue,select.EPOLLET)
return True
else:
print('Access denied')
return False
else:
print('Error value must be "in" or "out"')
return False
def low_memory_watchdog(self):
self.counts["low_mem_events"] = 0
self.__watchdog__run = True
efd = eventfd(0, 0)
mp = open(self.MEM_PRES_PATH)
with open(self.EVENT_CONTR_PATH, "w") as cgc:
cgc.write("%d %d %s" % (efd, mp.fileno(), self.PRESSURE_LEVEL))
p = epoll()
p.register(efd, EPOLLIN)
self.host.log_info('"Low memory" watchdog started(pressure level=%r).' % self.PRESSURE_LEVEL)
err = "shutdown event"
while self.__watchdog__run:
try:
events = p.poll(2)
for fd, event in events:
if event & EPOLLIN:
# In an eventfd, there are always 8 bytes
ret = os.read(efd, 64 / 8)
num = struct.unpack("Q", ret)
break
else:
continue
except (ValueError, OSError, IOError) as err:
break
self.host.log_debug('"Low memory" notification received: %d' % num)
for callback in self.low_memory_callbacks:
callback()
self.counts["low_mem_events"] += 1
p.close()
os.close(efd)
self.host.log_info('"Low memory" watchdog stopped(msg="%s").' % err)
def main():
pipe_r, pipe_w = os.pipe()
flags = fcntl.fcntl(pipe_w, fcntl.F_GETFL, 0)
flags = flags | os.O_NONBLOCK
fcntl.fcntl(pipe_w, fcntl.F_SETFL, flags)
signal.signal(signal.SIGCHLD, lambda x,y: None)
signal.signal(signal.SIGALRM, lambda x,y: None)
signal.siginterrupt(signal.SIGCHLD,False) #makes no difference
signal.siginterrupt(signal.SIGALRM,False) #makes no difference
signal.set_wakeup_fd(pipe_w)
signal.setitimer(signal.ITIMER_REAL, 2, 2)
poller = select.epoll()
poller.register(pipe_r, select.EPOLLIN)
poller.register(sys.stdin, select.EPOLLIN)
print "Main screen turn on"
while True:
events=[]
try:
events = poller.poll()
try:
for fd, flags in events:
ch=os.read(fd, 1)
if fd==pipe_r:
sys.stdout.write( "We get Signal" )
if fd==sys.stdin.fileno():
sys.stdout.write( ch )
sys.stdout.flush()
except IOError as e:
print "exception loop" + str(e)
except IOError as e:
print "exception poll" + str(e)
def run(self):
"""
Main event loop
"""
# Create dict of Event File Descriptor: Event File Object
event_file_map = {event_file.fileno(): event_file for event_file in self.open_event_files}
# Create epoll object
poll_object = select.epoll()
# Register files with select
for event_fd in event_file_map.keys():
poll_object.register(event_fd, select.EPOLLIN | select.EPOLLPRI)
# Loop
while not self._shutdown:
# epoll is nice but it wasn't getting events properly :(
try: # Cheap hack until i merged new code
if self._use_epoll:
self._poll_epoll(poll_object, event_file_map)
else:
self._poll_read()
except (IOError, OSError): # Basically if there's an error, most likely device has been removed then it'll get deleted properly
pass
time.sleep(SPIN_SLEEP)
# Unbind files and close them
for event_fd, event_file in event_file_map.items():
poll_object.unregister(event_fd)
event_file.close()
poll_object.close()
def run(self):
self.poller = select.epoll()
self.pollmask = select.EPOLLIN | select.EPOLLHUP | select.EPOLLERR
self.poller.register(self.server, self.pollmask)
while True:
try:
fds = self.poller.poll(timeout=self.timeout)
except:
return
for (fd, event) in fds:
if event & (select.POLLHUP | select.POLLERR):
self.handle_error(fd)
continue
if fd == self.server.fileno():
self.handle_server()
else:
self.handle_client(fd)
to_delete = []
for fileNo, client in self.clients.iteritems():
inactive_time = seconds() - client[1]
if inactive_time > self.timeout:
to_delete.append(fileNo)
for fileNo in to_delete:
self.close_client(fileNo)
def __init__(self, *, check_args=True):
super().__init__(check_args=check_args)
self._running = True
self._stopping = False
self._readers = {}
self._writers = {}
self._poll = select.epoll()
def server(ip, port):
""" 利用IO复用在监听并处理客户连接"""
# 创建监听套接字
listen_socket = socket.socket()
serve_address = (ip, port)
# 设置地址重用和端口重用
listen_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listen_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
listen_socket.bind(serve_address)
listen_socket.listen(1024)
# 创建epoller对象
epoller = epoll()
# 将listen_socket加入到epoller的监听中
epoller.register(listen_socket, select.EPOLLIN)
# SIGINT信号的处理函数
def sigint_handler(sig_num, addtion):
listen_socket.close()
epoller.close()
print('程序被强制退出...')
sys.exit()
# 注册对退出信号SIGINT的处理
signal.signal(signal.SIGINT, sigint_handler)
print('进程', os.getpid(), '已启动')
# 开始epoll轮询
epoll_loop(epoller, listen_socket)
def epoll_run(self):
"""async version"""
try:
epoll_fd = select.epoll()
epoll_fd.register(self.server_socket.fileno(), select.EPOLLIN)
except select.error, msg:
exit_error(msg)
def main():
parser = argparse.ArgumentParser()
parser.add_argument("-l", "--listen", help="listen", action="store_true")
parser.add_argument("-p", "--port", type=int, help="port")
parser.add_argument("-H", "--host", help="remote host")
args = parser.parse_args()
_connector = None
if args.listen:
if not args.port:
print 'server mode must give port'
return 1
serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
serversocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
serversocket.bind(('0.0.0.0', args.port))
serversocket.listen(1)
_connector,address = serversocket.accept()
print 'accept connection:' + str(_connector.fileno())
else:
if not args.host or not args.port:
print 'client mode must give host and port'
return 1
_connector = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
_connector.connect((args.host, args.port))
print 'connect success'
_connector.setblocking(0)
epoll = select.epoll()
epoll.register(sys.stdin.fileno(), select.EPOLLIN )
epoll.register(_connector.fileno(), select.EPOLLIN)
while True:
events = epoll.poll(1)
for fileno, event in events:
if fileno == sys.stdin.fileno():
msg = sys.stdin.readline().strip('\n')
bytes = msg.split(' ')
result_array = bytearray(len(bytes))
for i in range(len(bytes)):
result_array[i] = int(bytes[i],16)
_connector.send(result_array)
elif fileno == _connector.fileno():
error_happen = False
try:
recv_mes = _connector.recv(1024)
if len(recv_mes) == 0:
error_happen = True
else:
print ' '.join(['0x%.2x' % x for x in bytearray(recv_mes)])
except socket.error, e:
err = e.args[0]
if err is not errno.EAGAIN:
error_happen = True
if error_happen:
print 'connection closed'
_connector.close()
return 1
def __init__(self):
super().__init__()
self._epoll = select.epoll()
def test_close_twice(self):
import select
ep = select.epoll()
ep.close()
ep.close()
pserver.bind((HOST, PPORT))
pserver.listen(backlog)
#server for ctrl channel
cserver = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
cserver.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
cserver.bind((HOST, CPORT))
cserver.listen(backlog)
psocket = None #connected payload socket
csocket = None #connected ctrl socket
totalBytes = 0
timeout = 1000
epfd = select.epoll()
epfd.register(pserver.fileno(), select.EPOLLIN)
epfd.register(cserver.fileno(), select.EPOLLIN)
while True:
print_info("waiting for traffic; sleeping %d seconds on epoll..." %
timeout) #dbg
events = epfd.poll(timeout)
print_info("--------> epoll returned %d input fds" % len(events)) #dbg
for fileno, event in events:
if cserver and fileno == cserver.fileno(
): # new connection on ctrl server socket
if csocket: raise Exception("payload socket is already connected")
csocket, address = cserver.accept()
epfd.register(csocket.fileno(), select.EPOLLIN)
def __init__(self):
super(EpollSelector, self).__init__()
self._epoll = select.epoll()
def __init__(self):
self.epoll = select.epoll()
self.runnables = deque()
self.handlers = dict()
def run_server():
epoll = select.epoll()
__poll_srv(epoll)
connections = {}
requests = {}
while True:
try:
events = epoll.poll()
except Exception:
continue
for fileno, event in events:
if (event & (select.POLLIN | select.POLLPRI)):
dev = __get_dev(fileno)
if (None != dev):
if ("uart" == dev["type"]):
global request_uart
recv_buff = dev["fd"].read(
decode.CONFIG_TERMINAL_RECV_LENGTH - request_uart[
dev["fd"].fileno()].iRecvBufferTailCursor)
request_uart[
dev["fd"].fileno()].sRecvBuffer = request_uart[
dev["fd"].fileno()].sRecvBuffer + recv_buff
request_uart[
dev["fd"].fileno()].iRecvBufferTailCursor = len(
request_uart[dev["fd"].fileno()].sRecvBuffer)
while (0 == decode.sg_get_cmd(
ctypes.byref(
request_uart[dev["fd"].fileno()]))):
str_recv = request_uart[
dev["fd"].fileno()].sRecvBuffer
decode_command = decode.sg_decode(str_recv)
result = str(
handler.call_handle(
decode_command.sCommandKeyword,
decode_command.sCommandParameters))
ret = decode.sg_call_result(
ctypes.byref(decode_command), result,
len(result))
if (0 == ret):
dev["fd"].write(decode_command.sCommandReply)
decode.sg_destroy_result(
ctypes.byref(decode_command))
break
elif ("tcp" == dev["type"]):
connection, addr = dev["fd"].accept()
connection.setblocking(0)
epoll.register(connection, READ_ONLY)
connections[connection.fileno()] = connection
requests[connection.fileno(
)] = decode.SeNetWorkCustomRecv()
decode.sg_network_init(
ctypes.byref(requests[connection.fileno()]))
else:
if (0 == decode.sg_recv(ctypes.c_int(fileno),
ctypes.byref(requests[fileno]))):
epoll.modify(fileno, READ_WRITE)
else:
epoll.unregister(fileno)
del requests[fileno]
connections[fileno].close()
elif (event & select.EPOLLOUT):
try:
while (0 == decode.sg_get_cmd(
ctypes.byref(requests[fileno]))):
str_recv = requests[fileno].sRecvBuffer
decode_command = decode.sg_decode(str_recv)
result = str(
handler.call_handle(
decode_command.sCommandKeyword,
decode_command.sCommandParameters))
ret = decode.sg_call_result(
ctypes.byref(decode_command), result, len(result))
if (0 == ret):
decode.sg_send(fileno,
decode_command.sCommandReply,
len(decode_command.sCommandReply))
decode.sg_destroy_result(ctypes.byref(decode_command))
except Exception:
pass
epoll.modify(fileno, READ_ONLY)
elif (event & select.EPOLLHUP):
epoll.unregister(fileno)
connections[fileno].close()
del connections[fileno]
del requests[fileno]
return True
def __init__(self,
_id,
view,
N,
committee_addresses=[],
max_requests=None):
"""
@committee_addresses is a list of tuples containing the socket and ip addresses
for all the nodes that are currently members of the committee
"""
self.max_requests = max_requests
self.kill_flag = False
# self.ecdsa_key = ecdsa_sig.get_asymm_key(0, "verify")
# f = open("hello_0.dat", 'r')
# self.hello_sig = f.read()
# f.close()
self.connections = 0
self._id = _id # id
self.view = view # current view number
self.view_active = True # If we have majority agreement on view number
self.N = N # total number of replicas
self.f = int((N - 1) / 3) # number of failues tolerated
self.low_bound = 0 # lower bound for acceptable sequence numbers
self.high_bound = 0 # upper bound for acceptable sequence numbers
self.primary = view % N
self.seq = 0 # next available sequence number if this node is primary
self.last_executed = 0
self.last_stable_checkpoint = 0
self.checkpoint_proof = []
self.checkpoint_interval = 100
self.vmin = 0 # used for view changes
self.vmax = 0
self.waiting = {}
self.timeout = 10 * 60 # time interval (seconds), before view change
self.lock = Lock()
# hack
self.clientbuff = bytes()
self.clientlock = Lock()
self.fdmap = {} # file descriptor to socket mapping
self.buffmap = {} # file descriptor to incomming (recv) buffer mapping
self.outbuffmap = {}
self.p = select.epoll() # epoll object
# message log for node communication related to the
# PBFT protocol: [type][seq][id] -> request
self.node_message_log = {
"PRPR": {},
"PREP": {},
"COMM": {},
"INIT": {},
"REQU": {},
"VCHA": {},
"NEVW": {},
"CHKP": {},
}
# message log for client communication (requests)
# [client id][timestamp] -> request
self.client_message_log = {}
# dictionary for prepare messages
# (digest -> (number prepares received, 'prepared'[T/F])
self.prep_dict = {}
self.comm_dict = {}
# dictionary for all requests that have prepared (seq -> request)
self.prepared = {}
self.active = {} # dictionary for all currently active requests
self.view_dict = {} # [view num] -> [list of ids]
# self.key_dict = {}
self.replica_map = {}
self.bank = bank.bank(id, 1000)
self.committee_ids = committee_addresses
self.request_types = {
"REQU": self.process_client_request,
"PRPR": self.process_preprepare,
"PREP": self.process_prepare,
"COMM": self.process_commit,
"INIT": self.process_init,
"VCHA": self.process_view_change,
"NEVW": self.process_new_view,
"CHKP": self.process_checkpoint,
}
# log for executed commands
COMMIT_LOG_FILE = os.path.join(
config_general.get("log", "root_folder"),
"replica%s_commits.txt" % self._id)
self.commitlog = open(COMMIT_LOG_FILE, 'w', 1)
# log for debug messages
replica_log_loc = os.path.join(
config_general.get("log", "root_folder"),
"replica" + str(self._id) + "_log.txt")
self.debuglog = open(replica_log_loc, 'w', 1)
def main():
global sock, epoll
sock = socket.socket(socket.AF_NETLINK, socket.SOCK_RAW,
NETLINK_NEMS_ATH9K)
sock.bind((0, 0))
sock.setsockopt(270, 1, NETLINK_NEMS_ATH9K_GROUP)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, 2**28)
sock.setblocking(0)
epoll = select.epoll()
epoll.register(sock.fileno(), select.EPOLLIN)
enq_timestamp = {}
air_timestamp = {}
ack_timestamp = {}
latency = []
try:
while True:
events = epoll.poll(timeout=TIMEOUT)
if not events:
break
for fileno, event in events:
if event & select.EPOLLIN:
b = sock.recvfrom(NETLINK_BUF_LENGTH)[0]
b = b[b.find(b'[') + 1:b.find(b']')].decode('utf-8')
addr, seqno, timestamp, mode = b.split('|')
#if addr != TARGET_MAC_ADDR:
# continue
print(b)
continue
if mode == 'enq':
enq_timestamp[seqno] = int(timestamp)
elif mode == 'ack':
ack_timestamp[seqno] = int(timestamp)
if seqno in enq_timestamp:
latency.append(
(int(timestamp) - enq_timestamp[seqno]) / 1000)
# enq_timestamp.pop(seqno)
elif mode == 'air':
if seqno in ack_timestamp and seqno in enq_timestamp:
print(int(timestamp),
ack_timestamp[seqno] - enq_timestamp[seqno])
if len(latency) > 200:
latency.pop(0)
if len(latency) == 200:
a = sum(latency[:100]) / 100
b = sum(latency) / 200
current_quantum = get_airtime_quantum_low()
#print(f'{a: 5.3f} {b: 5.3f}', get_airtime_quantum_low())
if a > 15:
set_airtime_quantum_low(
max(50, current_quantum - 5))
else:
set_airtime_quantum_low(
min(500, current_quantum + 2))
except socket.timeout:
sock.close()
def test_non_inheritable(self):
import select, posix
ep = select.epoll()
assert posix.get_inheritable(ep.fileno()) == False
ep.close()
def _create_poller():
"""
:rtype: `select.poll`
"""
return select.epoll() # pylint: disable=E1101
def test_errors(self):
import select
raises(ValueError, select.epoll, -2)
raises(ValueError, select.epoll().register, -1, select.EPOLLIN)
def run(hostIP, port):
running = 1
counter = 0
bufferSize = 1024
#Maintain amount of data sent to and from server
dataTotal = 0
#Create an epoll object
epoll = select.epoll()
#The connection dictionary maps file descriptors (integers) to their corresponding network connection objects.
requests = {}
serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
#Register interest in read events on the server socket. A read event will occur any time the server socket accepts a socket connection.
epoll.register(serversocket, select.EPOLLIN | select.EPOLLET)
requests.update({serversocket.fileno(): serversocket})
#This method allows a bind() to occur even if a program was recently bound to the port.
serversocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
serversocket.bind((hostIP, port))
#The listen backlog queue size
serversocket.listen(10000)
#Since sockets are blocking by default, this is necessary to use non-blocking (asynchronous) mode.
serversocket.setblocking(0)
try:
while running:
events = epoll.poll(-1)
for fileno, event in events:
# If a socket connection has been created
if fileno == serversocket.fileno():
while 1:
try:
clientConnection, clientAddress = serversocket.accept()
counter +=1
#Set client connection to non blocking
clientConnection.setblocking(0)
requests.update({clientConnection.fileno(): clientConnection})
#Register EPOLLIN interest.
epoll.register(clientConnection, select.EPOLLIN | select.EPOLLET)
#If a read event occured, get client data
print (str(clientAddress) + " : " + " Just Connected. \n Currently connected clients: " + str(counter) + "\n")
text_file.write(str(clientAddress) + " : " + " Just Connected. \n Currently connected clients: " + str(counter) + "\n")
except:
break
elif event & select.EPOLLIN:
clientConnection = requests.get(fileno)
# Send client data back
try:
data = clientConnection.recv(bufferSize)
#Get client IP and port
clientIP, clientSocket = clientConnection.getpeername()
dataSize = len(data)
#Add data of client message to total data
dataTotal += dataSize
#Log data received
text_file.write(str(getTime()) + " - Size of data received (" + clientIP + ":" + str(clientSocket) + ") = " + str(dataSize) + '\n')
clientConnection.send(data)
except:
pass
# Handle a keyboard disconnect.
except KeyboardInterrupt:
print ("\nA keyboardInterruption has occured.")
close(epoll, serversocket, counter, dataTotal)
except Exception,e:
print ("Unknown Error has occured." + str(e))
close(epoll, serversocket, counter, dataTotal)
def serve_forever(self):
if hasattr(select, 'epoll'):
fn_map = {}
p = select.epoll()
for sock in self.sockets:
fn = sock.fileno()
sock.setblocking(0)
p.register(fn,
select.EPOLLIN | select.EPOLLHUP | select.EPOLLPRI)
fn_map[fn] = sock
while self.running:
try:
events = p.poll(timeout=1)
except IOError as e:
if e.errno != 4: # EINTR:
raise
else:
time.sleep(1)
continue
for fn, event in events:
if fn not in fn_map:
self.logger.error("p.poll get fn:%d", fn)
continue
sock = fn_map[fn]
try:
(sock, address) = sock.accept()
except IOError as e:
if e.args[0] == 11:
# Resource temporarily unavailable is EAGAIN
# and that's not really an error.
# It means "I don't have answer for you right now and
# you have told me not to wait,
# so here I am returning without answer."
continue
if e.args[0] == 24:
self.logger.warn(
"max file opened when sock.accept")
time.sleep(30)
continue
self.logger.warn("socket accept fail(errno: %s).",
e.args[0])
continue
try:
self.process_connect(sock, address)
except Exception as e:
self.logger.exception("process connect error:%r", e)
else:
while self.running:
r, w, e = select.select(self.sockets, [], [], 1)
for rsock in r:
try:
(sock, address) = rsock.accept()
except IOError as e:
self.logger.warn("socket accept fail(errno: %s).",
e.args[0])
if e.args[0] == 10022:
self.logger.info("restart socket server.")
self.server_close()
self.init_socket()
break
self.process_connect(sock, address)
self.server_close()
def __init__(self, ):
if not hasattr(select, 'epoll'):
raise SystemError("Not support epoll for current system.")
self._epoll = select.epoll()
self._loop_type = "epoll"
def run(hostIP, port):
running = 1
counter = 0
bufferSize = 1024
dataSentTotal = 0
dataReceivedTotal = 0
dataSSize = 0
dataRSize = 0
serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
serversocket.bind((hostIP, port))
#The listen backlog queue size
serversocket.listen(socket.SOMAXCONN)
#Since sockets are blocking by default, this is necessary to use non-blocking (asynchronous) mode.
serversocket.setblocking(0)
#Create an epoll object.
epoll = select.epoll()
#Register interest in read events on the server socket. A read event will occur any time the server socket accepts a socket connection.
epoll.register(serversocket.fileno(), select.EPOLLIN)
try:
#The connection dictionary maps file descriptors (integers) to their corresponding network connection objects.
requests = {}
while running:
#Query the epoll object to find out if any events of interest may have occurred. The parameter "1" signifies that we are willing to wait up to one second for such an event to occur. If any events of interest occurred prior to this query, the query will return immediately with a list of those events.
events = epoll.poll(-1)
#Events are returned as a sequence of (fileno, event code) tuples. fileno is a synonym for file descriptor and is always an integer.
for fileno, event in events:
#If a read event occurred on the socket server, then a new socket connection may have been created.
if fileno == serversocket.fileno():
clientConnection, clientAddress = serversocket.accept()
counter += 1
requests.update(
{clientConnection.fileno(): clientConnection})
#Set new socket to non-blocking mode.
clientConnection.setblocking(0)
#Register interest in read (EPOLLIN) events for the new socket.
epoll.register(clientConnection.fileno(), select.EPOLLIN)
logging.info(str(clientAddress) + " just connected.")
logging.info("Currently connected clients: " +
str(counter))
print(
str(clientAddress) +
" just connected. \nCurrently connected clients: " +
str(counter))
elif event & select.EPOLLIN:
receiveSock = requests.get(fileno)
data = receiveSock.recv(bufferSize)
clientIP, clientSocket = receiveSock.getpeername()
dataRSize = len(data)
dataReceivedTotal += dataRSize
logging.info("Size of data received (" + clientIP + ":" +
str(clientSocket) + ") = " + str(dataRSize))
dataSSize = len(data)
dataSentTotal += dataSSize
receiveSock.send(data)
logging.info("Size of data sent (" + clientIP + ":" +
str(clientSocket) + ") = " + str(dataSSize))
elif event & select.EPOLLERR:
counter -= 1
elif event & select.EPOLLHUP:
counter -= 1
#Handle keyboard interrupts (Mainly ctrl+c)
except KeyboardInterrupt:
close(epoll, serversocket, counter, dataReceivedTotal, dataSentTotal)
print("\nA keyboardInterruption has occured.")
#Handle all other exceptions in hopes to close 'cleanly'
except Exception, e:
print("Server connection has ran into an unexpected error: " + str(e))
close(epoll, serversocket, counter, dataReceivedTotal, dataSentTotal)
def __init__(self, app):
self.app = app
self.server_socket = init_server_socket()
self.epoll = select.epoll()
self.streams = {}
self.epoll.register(self.server_socket.fileno(), select.EPOLLIN)
def __init__(self):
self._epoll = select.epoll()
def main():
parser = argparse.ArgumentParser()
parser.add_argument("-l", "--listen", help="listen", action="store_true")
parser.add_argument("-p", "--port", type=int, help="port")
parser.add_argument("-H", "--host", help="remote host")
args = parser.parse_args()
_connector = None
if args.listen:
if not args.port:
print 'server mode must give port'
return 1
serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
serversocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
serversocket.bind(('0.0.0.0', args.port))
serversocket.listen(1)
_connector, address = serversocket.accept()
print 'accept connection:' + str(_connector.fileno())
else:
if not args.host or not args.port:
print 'client mode must give host and port'
return 1
_connector = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
_connector.connect((args.host, args.port))
print 'connect success'
devFd = tun_create('yt_tun', IFF_TUN | IFF_NO_PI)
if devFd < 0:
raise OSError
_connector.setblocking(0)
epoll = select.epoll()
epoll.register(_connector.fileno(), select.EPOLLIN)
epoll.register(devFd, select.EPOLLIN | select.EPOLLHUP)
MAXSIZE = 4096
while True:
events = epoll.poll(1)
for fileno, event in events:
if fileno == devFd:
buf = os.read(fileno, MAXSIZE)
_connector.send(buf)
elif fileno == _connector.fileno():
error_happen = False
try:
recv_mes = _connector.recv(MAXSIZE)
if len(recv_mes) == 0:
error_happen = True
else:
os.write(devFd, recv_mes)
except socket.error, e:
err = e.args[0]
if err is not errno.EAGAIN:
error_happen = True
if error_happen:
print 'connection closed'
_connector.close()
return 1
def __init__(self):
self._epoll = epoll()
def __init__(self):
self._poller = epoll()
def __init__(self, halt_notify=None, **kvargs):
self.__epfd = select.epoll()
self.__handlers = {}
self.__halt_notify = halt_notify
self.__halt = False
self.__obj_manager = None
def main():
a = argparse.ArgumentParser(description='Rasberry Pi LED flashing thingy')
a.add_argument('--pipe',
'-p',
help='Pi-blaster pipe',
default='/dev/pi-blaster')
args = a.parse_args()
state = {}
state['pipe'] = open(args.pipe, 'w')
state['c_red'] = {
'anim': anims.sine,
'speed': 1,
'delay': 0,
'brightness': 1,
'channel': 2
}
state['c_green'] = {
'anim': anims.sine,
'speed': 1,
'delay': 1 / 3,
'brightness': 1,
'channel': 5
}
state['c_blue'] = {
'anim': anims.sine,
'speed': 1,
'delay': 2 / 3,
'brightness': 1,
'channel': 6
}
# Maps file descriptors to netstate instances
connections = {}
spec = ctimerfd.itimerspec()
spec.it_interval.tv_sec = 0
spec.it_interval.tv_nsec = long(1e9 / 24)
spec.it_value.tv_sec = 0
spec.it_value.tv_nsec = 1
t = ctimerfd.timerfd_create(ctimerfd.CLOCK_MONOTONIC,
ctimerfd.TFD_CLOEXEC | ctimerfd.TFD_NONBLOCK)
ctimerfd.timerfd_settime(t, 0, ctypes.pointer(spec), None)
s = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 0)
s.bind(('', 12345))
s.listen(5)
epoll = select.epoll()
util.set_cloexec(
epoll.fileno()
) # XXX As of Python 2.3, flags=EPOLL_CLOEXEC can be used when creating the epoll instead
epoll.register(t, select.POLLIN)
epoll.register(s, select.POLLIN)
while True:
for fd, event in eintr_wrap(epoll.poll):
# timer
if fd == t and event & select.POLLIN:
os.read(t, 8)
wrap(on_timer, state)
# listening socket
elif fd == s.fileno() and event & select.POLLIN:
conn, addr = eintr_wrap(s.accept)
print 'Connection accepted from [{}]:{} (fd={})'.format(
addr[0], addr[1], conn.fileno())
conn.setblocking(False)
epoll.register(conn.fileno(), select.POLLIN)
connections[conn.fileno()] = netstate(conn, bytearray())
# connection socket
elif fd in connections and event & select.POLLIN:
ns = connections[fd]
while True:
x = eagain_wrap(eintr_wrap, ns.socket.recv, 4096)
if x is None:
break
if len(x) == 0:
print 'Connection closed (fd={})'.format(
ns.socket.fileno())
del connections[ns.socket.fileno()]
epoll.unregister(ns.socket.fileno())
ns.socket.close()
break
ns.buf.extend(x)
while True:
try:
i = ns.buf.index('\r\n')
except ValueError:
break
args = [bytes(x) for x in ns.buf[:i].split()]
del ns.buf[:i + 2]
fn = commands.commands.get(args[0], commands.unknown)
try:
fn(ns.socket, args[1:], state)
except Exception as e:
eintr_wrap(ns.socket.send, b'500 {}\r\n'.format(e))
traceback.print_exc()
# anything else is unexpected
else:
msg = 'Bad event (fd={} event={})'.format(fd, event)
raise Exception(msg)
# endregion -------------------------------------------------------------------
# region #* Исполнение кода в 1 поток. Модуль Select() ------------------------
"""В операционной системе существует модуль select, позволяеющий организовать
работу с неблокирующим вводом-выводом.
"""
sock = socket.socket() # создание объекта сокета
sock.bind()
sock.listen()
conn1, addr = sock.accept()
conn2, addr = sock.accept()
conn1.setblocking(0) # перевод соединения в неблокирующий режим. В этом режиме
conn2.setblocking(0) # вместо исключения идет некий ответ об ошибке
# _ образцец для Линукс
epoll = select.epoll() # создание объекта epoll
epoll.register(conn1.fileno(), select.EPOLLIN | select.EPOLLOUT)
"""в обхекте epoll регистриуются файловые дескрипторы coll1.fileno, а также
маску, то есть говорим на какие события файловых дескрипторов мы подписываемся.
Чтение и запись в совектах """
epoll.register(conn2.fileno(), select.EPOLLIN | select.EPOLLOUT)
conn_map = {
conn1.fileno(): conn1,
conn2.fileno(): conn2,
}
# создается словрь объектов файловых соединений.
# endregion -------------------------------------------------------------------
@contact: [email protected] @file: pipe_with_epoll.py @time: 2015/12/7 15:09 """ import socket import select import Queue import new_type from multiprocessing.dummy import Pool as ThreadPool max_read_header = 50 queue = Queue.Queue() addr = '0.0.0.0' port = 8080 raw_conn = {} epoll_sock = select.epoll() status = {'close': 1, 'more': 2, 'complete': 3} sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0) sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) sock.bind((addr, port)) sock.listen(1) sock.setblocking(0) epoll_sock.register(sock.fileno(), select.EPOLLIN) class listen_worker(): def __init__(self, addr, port): print 'listening on port: ' + str(port) while 1: for fd, events in epoll_sock.poll():
#-*- encoding=UTF-8 -*-
def get_command_output(
cls,
command,
is_posix,
timeout=10,
):
process = None
all_output = ''
start_time = time.time()
try:
poller = select.epoll()
process = subprocess.Popen(
args=shlex.split(
s=command,
posix=is_posix,
),
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
)
poller.register(process.stdout, select.EPOLLHUP | select.EPOLLIN)
while start_time + timeout > time.time():
for fileno, event in poller.poll(timeout=1, ):
if event & select.EPOLLHUP:
poller.unregister(fd=fileno, )
break
output = process.stdout.read()
output = output.decode(
encoding='utf-8',
errors='ignore',
)
all_output += output
try:
process.wait(0)
break
except subprocess.TimeoutExpired:
pass
finally:
if process is not None:
process.terminate()
try:
os.waitpid(
process.pid,
0,
)
except ChildProcessError:
pass
output = process.stdout.read()
output = output.decode(
encoding='utf-8',
errors='ignore',
)
all_output += output
try:
process.kill()
except ProcessLookupError:
pass
empty_whois_result = all_output.strip() == ''
timedout_whois_result = all_output.strip(
) == 'Interrupted by signal 15...'
if empty_whois_result or timedout_whois_result:
raise _resolver.WhoisTimedOut()
else:
return all_output.strip()
def __init__(self,
nodetype,
addr=args.addr,
port=args.port,
givenbootstraplist=args.bootstrap,
debugoption=args.debug,
objectname=args.objectname,
instantiateobj=False,
configpath=args.configpath,
logger=args.logger,
writetodisk=args.writetodisk):
self.addr = addr if addr else findOwnIP()
self.port = port
self.type = nodetype
self.debug = debugoption
self.durable = writetodisk
if instantiateobj:
if objectname == '':
parser.print_help()
self._graceexit(1)
self.objectname = objectname
# initialize receive queue
self.receivedmessages_semaphore = Semaphore(0)
self.receivedmessages = []
# lock to synchronize message handling
self.lock = Lock()
# create server socket and bind to a port
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
self.socket.setblocking(0)
if self.port:
try:
self.socket.bind((self.addr, self.port))
except socket.error as e:
print "Cannot bind to port %d" % self.port
print "Socket Error: ", e
self._graceexit(1)
else:
for i in range(50):
self.port = random.randint(14000, 15000)
try:
self.socket.bind((self.addr, self.port))
break
except socket.error as e:
print "Socket Error: ", e
pass
self.socket.listen(10)
self.connectionpool = ConnectionPool()
try:
self.connectionpool.epoll = select.epoll()
except AttributeError as e:
# the os doesn't support epoll
self.connectionpool.epoll = None
self.alive = True
self.me = Peer(self.addr, self.port, self.type)
# set id
self.id = '%s:%d' % (self.addr, self.port)
# set path for additional configuration data
self.configpath = configpath
# set the logger
try:
LOGGERNODE = load_configdict(self.configpath)['LOGGERNODE']
except KeyError as e:
if logger:
LOGGERNODE = logger
else:
LOGGERNODE = None
self.logger = Logger("%s-%s" % (node_names[self.type], self.id),
lognode=LOGGERNODE)
print "%s-%s connected." % (node_names[self.type], self.id)
# Initialize groups
# Keeps {peer:outofreachcount}
self.replicas = {}
self.acceptors = {}
self.nameservers = {}
self.groups = {
NODE_REPLICA: self.replicas,
NODE_ACCEPTOR: self.acceptors,
NODE_NAMESERVER: self.nameservers
}
self.groups[self.me.type][self.me] = 0
# Keeps the liveness of the nodes
self.nodeliveness = {}
# connect to the bootstrap node
if givenbootstraplist:
self.bootstraplist = []
self.discoverbootstrap(givenbootstraplist)
self.connecttobootstrap()
if self.type == NODE_REPLICA or self.type == NODE_NAMESERVER:
self.stateuptodate = False
import socket
import select
import queue
server = socket.socket()
server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
server_address = ("0.0.0.0", 9999)
server.bind(server_address)
server.listen(5)
server.setblocking(False)
print("Server is listening....")
timeout = 10
# 新建epoll事件对象, 后续要监控的事件, 添加到其中
epoll = select.epoll()
# 添加服务器socket的fd, 到等待读事件集合
epoll.register(server.fileno(), select.EPOLLIN)
# 每一个连接的消息字典{socket: 队列}
message_queues = {}
fd_to_socket = {server.fileno(): server,}
while True:
print("等待活动连接......")
# 轮训注册的事件集合
events = epoll.poll(timeout)
if not events:
print("epoll 超时无活动连接, 重新轮询...")
continue
print("有%d个新事件, 开始处理......" % len(events))
def main():
args = getArgs()
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((args.ip, args.port))
s.listen(1)
s.setblocking(0)
epoll = select.epoll()
epoll.register(s.fileno(), select.EPOLLIN)
try:
conn = {}
txbuf = {}
rxbuf = {}
while True:
events = epoll.poll(1)
for fileno, event in events:
if fileno == s.fileno():
c, addr = s.accept()
c.setblocking(0)
conn[c.fileno()] = c
txbuf[c] = ''
rxbuf[c] = ''
epoll.register(c.fileno(), select.EPOLLOUT)
elif event & select.EPOLLOUT:
c = conn[fileno]
try:
n = c.send(txbuf[c])
except Exception as e:
print e
c.close()
epoll.unregister(fileno)
del rxbuf[c]
del txbuf[c]
del conn[fileno]
continue
txbuf[c] = txbuf[c][n:]
if not len(txbuf[c]):
epoll.modify(fileno, select.EPOLLIN)
elif event & select.EPOLLIN:
c = conn[fileno]
try:
rxbuf[c] += c.recv(1024)
except Exception as e:
print e
c.close()
epoll.unregister(fileno)
del rxbuf[c]
del txbuf[c]
del conn[fileno]
continue
if not len(rxbuf[c]):
c.close()
epoll.unregister(fileno)
del rxbuf[c]
del txbuf[c]
del conn[fileno]
continue
l, msg, rxbuf[c] = msgUnpack(rxbuf[c])
if l:
for sock in conn.values():
if sock == c: continue
txbuf[sock] += msgPack(msg)
epoll.modify(sock.fileno(), select.EPOLLOUT)
else:
print fileno, event
except KeyboardInterrupt:
epoll.close()
s.close()
