Question
Attached are UDP client and server programs written in Python. To run the python programs on Linux, type python p1_udp_client.py and python p1_udp_server.py for each
Attached are UDP client and server programs written in Python. To run the python programs on Linux, type "python p1_udp_client.py" and "python p1_udp_server.py" for each terminal. " p1_udp_client.py" and "python p1_udp_server.py" have tested on Python 2.7.12. p1_udp_server_3.py and p1_udp_client_3.py have been tested on Python 3.5.2. Please check your python version first.
Modify the UDP client and server posted above.
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The UDP client sends 20 messages to the UDP server. (10 Points)
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The UDP server replies to the client whenever 5 messages are received (or delivered), so the client receives only 5 messages from the server. (40 Points)
- The UDP server does not reply if any of 5 messages is not delivered. (50 Points).
*
############################## # UDP Echo Clinet ############################### import socket import sys
# Create a UDP socket sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) server_address = ('localhost', 10000)
# for checking a number of messages count = 0
try: while True: message = sys.stdin.readline().replace(' ','') # Send data sys.stderr.write('sending "%s" ' % message) sent = sock.sendto(message.encode(), server_address) count = count + 1 if message.lower() == 'exit': break
# Receive response sys.stderr.write('waiting to receive ') data, server = sock.recvfrom(4096) sys.stderr.write('received "%s" ' % data.decode())
finally: sys.stderr.write('closing socket ') sock.close()
############################### # UDP Echo Server ############################### import socket import sys
# Create a datagram socket sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
# Bind the socket to the port (port number: 10000) server_address = ('localhost', 10000) sys.stderr.write('starting up on %s port %s ' % server_address) sock.bind(server_address)
# for checking a number of messages count = 0
while True: sys.stderr.write('waiting to receive message ') data, address = sock.recvfrom(4096) sys.stderr.write('received %s bytes from %s ' % (len(data), address)) sys.stderr.write(data.decode()) if data: if data.lower() == 'exit': break else: sent = sock.sendto(data, address) sys.stderr.write(' sent %s bytes back to %s ' % (sent, address))
sock.close()
* This is the code
*Okay do 4 messages*
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