def main(socket):
while (True):
input_length = _read_int(socket)
data = socket.read(input_length)
result = transform(data)
resultBytes = result.encode()
_write_int(len(resultBytes), socket)
socket.write(resultBytes)
socket.flush()
def PollSockets(self):
events = self.poller.poll(0)
while events:
event = events.pop()
fd, flag = event
socket = self.fd_to_socket[fd]
if socket == self.server_socket:
connection, address = socket.accept()
if len(self.sockets) == max_connections:
print('signalk server: max connections reached!!!',
len(self.sockets))
self.RemoveSocket(self.sockets[0]) # dump first socket??
socket = LineBufferedNonBlockingSocket(connection)
self.sockets.append(socket)
fd = socket.socket.fileno()
# print('new client', address, fd)
self.fd_to_socket[fd] = socket
self.poller.register(fd, select.POLLIN)
elif flag & (select.POLLHUP | select.POLLERR | select.POLLNVAL):
self.RemoveSocket(socket)
elif flag & select.POLLIN:
if not socket.recv():
self.RemoveSocket(socket)
while True:
line = socket.readline()
if not line:
break
try:
self.HandleRequest(socket, line)
except Exception as e:
print('invalid request from socket', line, e)
socket.send('invalid request: ' + line + '\n')
# flush all sockets
for socket in self.sockets:
socket.flush()
def poll(self, timeout=0):
# server is in subprocess
if self.process != 'main process':
if not self.process:
self.init_process()
return
t0 = time.monotonic()
if t0 >= self.values.persistent_timeout:
self.values.store()
dt = time.monotonic() - t0
if dt > .1:
print('persistent store took too long!', time.monotonic() - t0)
return
if timeout:
timeout *= 1000 # milliseconds
timeout = .1
events = self.poller.poll(timeout)
while events:
event = events.pop()
fd, flag = event
connection = self.fd_to_connection[fd]
if connection == self.server_socket:
connection, address = connection.accept()
if len(self.sockets) == max_connections:
print('pypilot server: max connections reached!!!',
len(self.sockets))
self.RemoveSocket(self.sockets[0]) # dump first socket??
socket = LineBufferedNonBlockingSocket(connection, address)
print('server add socket', socket.address)
self.sockets.append(socket)
fd = socket.fileno()
socket.cwatches = {
'values': True
} # server always watches client values
self.fd_to_connection[fd] = socket
self.poller.register(fd, select.POLLIN)
elif flag & (select.POLLHUP | select.POLLERR | select.POLLNVAL):
if not connection in self.sockets:
print('internal pipe closed, server exiting')
exit(0)
self.RemoveSocket(connection)
elif flag & select.POLLIN:
if fd in self.fd_to_pipe:
if not connection.recvdata():
continue
line = connection.readline(
) # shortcut since poll indicates data is ready
while line:
self.values.HandlePipeRequest(line, connection)
line = connection.readline()
continue
if not connection.recvdata():
self.RemoveSocket(connection)
continue
while True:
line = connection.readline()
if not line:
break
try:
self.values.HandleRequest(line, connection)
except Exception as e:
connection.write('error=invalid request: ' + line)
try:
print('invalid request from connection', e, line)
except Exception as e2:
print('invalid request has malformed string', e,
e2)
if not self.multiprocessing:
# these pipes are not pollable as they are implemented as a simple buffer
for pipe in self.pipes:
while True:
line = pipe.readline()
if not line:
break
self.values.HandlePipeRequest(line, pipe)
# send periodic watches
self.values.send_watches()
# send watches
for connection in self.sockets + self.pipes:
if connection.cwatches:
connection.write('watch=' + pyjson.dumps(connection.cwatches) +
'\n')
connection.cwatches = {}
# flush all sockets
for socket in self.sockets:
socket.flush()
while True:
for socket in self.sockets:
if not socket.socket:
print('server socket closed from flush!!')
self.RemoveSocket(socket)
break
else:
break
for pipe in self.pipes:
pipe.flush()
