def _send(self, packet, buffer=False):
packet.ack_num = self.recv_window.confirmed
if not buffer:
print_info(self.name, 'sending', packet)
self.socket.send(packet.encode())
else:
packet = self.send_window.put_packet(packet)
print_info(self.name, 'buffered', packet)
def two_ends():
from adaptors import DropoutSocket, CorruptedSocket, DisorderSocket
server = threading.Thread(target=start_server, args=())
server.setDaemon(True)
server.start()
client_protocol = start_client(lambda x: DisorderSocket(0.5, x))
client_protocol.send(b'hello, world1')
client_protocol.send(b'hello, world2')
client_protocol.send(b'hello, world3')
client_protocol.send(b'hello, world4')
client_protocol.flush()
client_protocol.close()
print_info('done')
def start_server():
global print_count
server = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
server.setblocking(False)
server.bind(('0.0.0.0', SERVER_PORT))
server.connect((CLIENT_IP, CLIENT_PORT))
server_protocol = Protocol(server, name='server')
while server_protocol.open:
with endpoint_mutex:
print_info("Server round")
packet = server_protocol.recv()
if packet:
print_info('Server', packet)
print_count += 1
time.sleep(yield_time)
def _recv(self):
if not self.open:
raise ConnectionResetError('Connection reset')
try:
data = self.socket.recv(8192)
except IOError as ex:
if ex.errno == 11:
return
raise ex
if not data:
return
packet = Packet().decode(data)
if packet.chk_sum != packet.compute_checksum():
print_info(self.name, 'Checksum error, discarding', packet)
return
print_info(self.name, 'received', packet)
return packet
def recv(self, bufsize=8192):
packet = self.socket.recv(bufsize)
print_info(self, 'recv', packet)
return packet
def send(self, data):
print_info('Writing data', data)
def test_byte_buf():
buf = ByteBuf()
buf.write_int(666)
print_info(buf.read_int())
buf.write_data(b'hello, world')
print_info(buf.read_data())
# -----------------------------------------------------------------------------
# From Numpy to Python
# Copyright (2017) Nicolas P. Rougier - BSD license
# More information at https://github.com/rougier/numpy-book
# -----------------------------------------------------------------------------
import numpy as np
from tools import print_info
if __name__ == '__main__':
Z = np.arange(5 * 5).reshape(5, 5)
print_info(Z)
# Z = np.array(Z,order='F')
# info(Z)