import time
import util
def msg_handler(file_handle, msg):
file_handle.write(msg.encode())
if __name__ == '__main__':
if len(sys.argv) != 3:
print('Usage: python file_receiver.py [dummy|ss|gbn] [file_name]')
sys.exit(1)
transport_layer = None
transport_layer_name = sys.argv[1]
file_name = sys.argv[2]
assert not os.path.exists(file_name)
file_handle = None
try:
file_handle = open(file_name, 'wb')
transport_layer = util.get_transport_layer(
'receiver', transport_layer_name,
functools.partial(msg_handler, file_handle))
while True:
time.sleep(1)
finally:
if file_handle:
file_handle.close()
if transport_layer:
transport_layer.shutdown()
import os.path
import sys
import time
import util
if __name__ == '__main__':
if len(sys.argv) != 3:
print('Usage: python file_sender.py [dummy|ss|gbn] [file_name]')
sys.exit(1)
transport_layer = None
transport_layer_name = sys.argv[1]
file_name = sys.argv[2]
assert os.path.isfile(file_name)
start_time = time.time()
try:
transport_layer = util.get_transport_layer('sender',
transport_layer_name, None)
with open(file_name, 'rb') as f:
while True:
msg = f.read(config.MAX_MESSAGE_SIZE)
if not msg: break
print('MSG of length ', len(msg))
while not transport_layer.send(msg):
pass
finally:
if transport_layer:
transport_layer.shutdown()
end_time = time.time()
print('Time used [secs]:', end_time - start_time)
# Usage: python demo_receiver.py [dummy|ss|gbn]
import config
import sys
import time
import util
def msg_handler(msg):
print(repr(msg))
if __name__ == '__main__':
if len(sys.argv) != 2:
print('Usage: python demo_receiver.py [dummy|ss|gbn]')
sys.exit(1)
transport_layer = None
transport_layer_name = sys.argv[1]
try:
transport_layer = util.get_transport_layer('receiver',
transport_layer_name,
msg_handler)
while True:
time.sleep(1)
finally:
if transport_layer:
transport_layer.shutdown()
# Usage: python demo_sender.py [dummy|ss|gbn]
import config
import sys
import time
import util
if __name__ == '__main__':
if len(sys.argv) != 2:
print('Usage: python demo_sender.py [dummy|ss|gbn]')
sys.exit(1)
transport_layer = None
name = sys.argv[1]
start_time = time.time()
try:
transport_layer = util.get_transport_layer(
name, config.SENDER_PORT,
config.RECEIVER_PORT, None)
for i in range(20):
msg = 'MSG:' + str(i)
print(msg)
while not transport_layer.send(str.encode(msg)):
pass
finally:
if transport_layer:
transport_layer.shutdown()
end_time = time.time()
print('Time used [secs]:', end_time - start_time)
# Usage: python demo_receiver.py [dummy|ss|gbn]
import config
import sys
import time
import util
def msg_handler(msg):
print(repr(msg))
if __name__ == '__main__':
if len(sys.argv) != 2:
print('Usage: python demo_receiver.py [dummy|ss|gbn]')
sys.exit(1)
transport_layer = None
transport_layer_name = sys.argv[1]
try:
transport_layer = util.get_transport_layer('receiver',
transport_layer_name,
msg_handler) # instantiate a transport layer protocol
while True:
time.sleep(1)
finally:
if transport_layer:
transport_layer.shutdown()
# Usage: python demo_receiver.py [dummy|ss|gbn]
import config
import sys
import time
import util
def msg_handler(msg):
print(repr(msg))
if __name__ == '__main__':
if len(sys.argv) != 2:
print('Usage: python demo_receiver.py [dummy|ss|gbn]')
sys.exit(1)
transport_layer = None
name = sys.argv[1]
try:
transport_layer = util.get_transport_layer(name, config.RECEIVER_PORT,
config.SENDER_PORT,
msg_handler)
while True:
time.sleep(1)
finally:
if transport_layer:
transport_layer.shutdown()