def get(filename):
print "Downloading file: " + str(filename)
RxP.sendData(clientSocket, "GET: " + str(filename))
response = RxP.receiveData(clientSocket)
print "Received response: ", response
#clientSocket.recieveData
return
def test_4():
client = RxP.createRxPSocket("localhost", 5000)
server = RxP.createRxPSocket("localhost", 5001)
RxP.listenForRxPConnections(server)
RxP.connectToRxP(client, "localhost", 5001)
RxP.sendData(client, "Hello")
RxP.close(client)
def listenForServerRequests():
print "Listening for server requests!"
while(True):
request = RxP.receiveData(serverSocket)
if "GET" in str(request):
print "GETTING a file"
request = str(request).replace("GET: ", "")
print "Getting file: ", request
with open (request, "r") as myfile:
data = myfile.read()
RxP.sendData(serverSocket, data)
def terminate():
print "Shutting down server"
RxP.closeRxPSocket(serverSocket)
return
def main():
# check for number of correct command line arguments
if len(sys.argv) != 4:
print ('Please enter arguments in the correct format: X A P' +
'\nX: The port number this server should bind to'+
'\nA: The IP address of NetEmu' +
'\nP: The UDP port number of NetEmu ')
sys.exit()
# port number at which the FxA-Server's UDP socket should bind to
try:
portnumber = int(sys.argv[1])
except:
print 'Please enter a valid port number for Server (1025-65536)'
sys.exit()
ipaddress = sys.argv[2]
try:
emuportnumber = int(sys.argv[3])
except:
print 'Please enter a valid port number for NetEmu (1025-65536)'
sys.exit()
windowSize = 1
# check for valid client port numbers
if portnumber < 1025 or portnumber > 65536:
print 'Please enter a valid port number for client (1025-65536)'
sys.exit()
# Port number for client must be even
if portnumber % 2 != 1:
print 'Port number for server must be odd'
sys.exit()
# check for valid IP addresses
try:
inet_aton(ipaddress)
except:
if ipaddress != "localhost":
print("Not a valid IP address")
sys.exit()
# check for valid NetEmu UDP port number
if emuportnumber < 1025 or emuportnumber > 65536:
print 'Please enter a valid port number for NetEmu (1025-65536)'
sys.exit()
global emuportnumber
# creating and binding rxp socket
serverSocket = RxP.createRxPSocket(ipaddress, portnumber)
global serverSocket
incoming_connection = RxP.listenForRxPConnections(serverSocket)
# After getting an incoming connection
RxP.acceptRxPSocketConnection(serverSocket, incoming_connection)
if RxP.isConnected(serverSocket):
thread = threading.Thread(target=listenForServerRequests)
thread.start()
threads.append(thread)
#the command loop
while True:
# have the user input a command and parse it
command = raw_input('\nCommand: ').split(" ")
# check for invalid command
if len(command) > 2:
print "Enter a valid command"
continue
#check for terminate
if len(command) == 1:
# terminate the server
if command[0] == "terminate":
terminate()
for thread in threads:
thread.join()
sys.exit()
continue
else:
print "Please enter a valid command"
continue
#check for window
elif len(command) == 2:
#window
if command[0] == "window":
window(command[1])
continue
else:
print "Please enter a valid command"
continue
def test_basic_sending(is_client):
if is_client:
print "Testing basic connection as a client"
client = RxP.createRxPSocket("localhost", 5000)
RxP.connectToRxP(client, "localhost", 5001)
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RxP.closeRxPSocket(client)
else:
print "Testing basic connection as a server"
server = RxP.createRxPSocket("localhost", 5001)
connection_attempt_address = RxP.listenForRxPConnections(server)
print("Receieved connection attempt from: ", connection_attempt_address)
RxP.acceptRxPSocketConnection(server, connection_attempt_address)
response = RxP.receiveData(server, 999999)
print "Received data: ", response
RxP.closeRxPSocket(server)
def test_basic_connection(is_client):
if is_client:
print "Testing basic connection as a client"
client = RxP.createRxPSocket("localhost", 5000)
RxP.connectToRxP(client, "localhost", 5001)
time.sleep(3)
RxP.closeRxPSocket(client)
else:
print "Testing basic connection as a server"
server = RxP.createRxPSocket("localhost", 5001)
connection_attempt_address = RxP.listenForRxPConnections(server)
print("Receieved connection attempt from: ", connection_attempt_address)
RxP.acceptRxPSocketConnection(server, connection_attempt_address)
time.sleep(3)
RxP.closeRxPSocket(server)
def test_create_socket():
socket = RxP.createRxPSocket("localhost", 9998)
RxP.closeRxPSocket(socket)
def main():
rxpProtocol = None
# Handling the argument
arg = sys.argv
if len(arg) < 3 or len(arg) > 4:
print 'Invalid command. Please try again.'
sys.exit()
# pass the command line arguments
try:
clientPort = int(arg[1])
except ValueError:
print 'Invalid command. Please try again.'
sys.exit()
# validate
if not 0 < clientPort < 65536:
print 'Invalid port number. Please try again.'
sys.exit()
# Server IP address
serverIP = arg[2]
if not _validIP(serverIP):
print 'IP address is not valid, please try again'
sys.exit()
# netEmu port number
try:
netEmuPort = int(arg[3])
except ValueError:
print 'Invalid command. Please try again.'
sys.exit()
# validate
if not 0 < netEmuPort < 65536:
print 'Invalid port number. Please try again.'
sys.exit()
# Dest. port number
desPort = clientPort + 1
log = "output-client.txt"
clientProtocol = None
sendThread = None
connThread = None
sThread = None
#execute user's commend
while True:
time.sleep(.500)
Sinput = raw_input("type connect - to establish connection \n"
+ "get 'filename' - to download the file from server \n"
+ "post 'filename' - to upload the file to server \n"
+ "Window W - to change the window size \n"
+ "disconnect - to close the connection\n"
+ 'quit - to quit the application\n')
if Sinput.__eq__("connect"):
rxpProtocol = RxP(serverIP, netEmuPort, clientPort, desPort, log)
clientProtocol = RecvThread(rxpProtocol)
clientProtocol.start()
rxpProtocol.connect()
# get file form server
elif "get" in Sinput:
if rxpProtocol != None:
s = Sinput.split()
rxpProtocol.getFile(s[1])
# post file form server
elif "post" in Sinput:
if rxpProtocol != None:
s = Sinput.split()
sendThread = SendThread(rxpProtocol, s[1])
sendThread.start()
# set the window size
elif "window" in Sinput:
if rxpProtocol != None:
s = Sinput.split()
try:
window = int(s[1])
except ValueError:
print 'Invalid window size. Please try again.'
sys.exit()
if not 0 < window < 50:
print 'Window size too big. Please try again.'
sys.exit()
print "Set window size to " + str(window)
rxpProtocol.setWindowSize(window)
#close connection
elif Sinput.__eq__("disconnect"):
if rxpProtocol != None:
rxpProtocol.close()
clientProtocol.stop()
rxpProtocol.socket.close()
rxpProtocol = None
elif Sinput.__eq__("quit"):
if rxpProtocol:
print 'disconnect before quit'
else:
break
def main():
print ("Server Starts")
# Handling the argument
arg = sys.argv
if len(arg) < 3 or len(arg) > 4:
print 'Invalid command. Please try again.'
sys.exit()
log = "output-server.txt"
#pass the command line arguments
try:
hostPort = int(arg[1])
except ValueError:
print 'Invalid command. Please try again.'
sys.exit()
# validate
if not 0 < hostPort < 65536:
print 'Invalid port number. Please try again.'
sys.exit()
#Server IP address
serverIP = arg[2]
# validate
if not _validIP(serverIP):
print 'IP address is not valid, please try again'
sys.exit()
# netEmu port number
try:
netEmuPort = int(arg[3])
except ValueError:
print 'Invalid command. Please try again.'
sys.exit()
# validate
if not 0 < netEmuPort < 65536:
print 'Invalid port number. Please try again.'
sys.exit()
# Dest. port number
desPort = hostPort - 1
rxpProtocol = RxP(serverIP, netEmuPort, hostPort, desPort, log)
serverProtocol = RecvThread(rxpProtocol)
serverProtocol.start()
# execute user's commend
while (True):
Sinput = raw_input("type Window W - to change the window size \n"
+ "terminate - to terminate the server\n")
if "window" in Sinput:
s = Sinput.split()
try:
wsize = int(s[1])
except ValueError:
print 'Invalid window size. Please try again.'
sys.exit()
if not 0 < wsize < 50:
print 'Window size too big. Please try again.'
sys.exit()
print "Set window size to " + str(wsize)
rxpProtocol.setWindowSize(wsize)
# close server
elif Sinput.__eq__("terminate"):
rxpProtocol.close()
serverProtocol.stop()
for thread in rxpProtocol.threads:
thread.stop()
print ("Server is closed")
break
def main():
#uncomment
#clientSocket = RxP()
# check for number of correct command line arguments
if len(sys.argv) != 4:
print ('Please enter arguments in the correct format: X A P' +
'\nX: The port number this client should bind to'+
'\nA: The IP address of NetEmu' +
'\nP: The UDP port number of NetEmu ')
sys.exit()
# port number at which the FxA-client's UDP socket should bind to. Should be equal to the server's port number minus 1
try:
portnumber = int(sys.argv[1])
except:
print 'Please enter a valid port number for client (1025-65536)'
sys.exit()
ipaddress = sys.argv[2]
try:
emuportnumber = int(sys.argv[3])
except:
print 'Please enter a valid port number for NetEmu (1025-65536)'
sys.exit()
file = ""
# window size in segments
windowSize = 30
# check for valid client port numbers
if portnumber < 1025 or portnumber > 65536:
print 'Please enter a valid port number for client (1025-65536)'
sys.exit()
# Port number for client must be even
if portnumber % 2 != 0:
print 'Port number for client must be even'
sys.exit()
# check for valid IP addresses
try:
inet_aton(ipaddress)
except:
if ipaddress != "localhost":
print("Not a valid IP address")
sys.exit()
# check for valid NetEmu UDP port number
if emuportnumber < 1025 or emuportnumber > 65536:
print 'Please enter a valid port number for NetEmu (1025-65536)'
sys.exit()
global emuportnumber
# When everything passes, bind the RxP socket to passed in ip_address and port_number
clientSocket = RxP.createRxPSocket(ipaddress, portnumber)
global clientSocket
# Set window size
RxP.setWindowSize(clientSocket, windowSize)
print "Welcome! Commands include: \n'connect' \n'get <file>' \n'post <file>' \n'window <size>' \n'disconnect'"
#the command loop
while True:
# have the user input a command and parse it
command = raw_input('\nCommand: ').split(" ")
# check for invalid command
if len(command) > 2:
print "Enter a valid command"
continue
#check for connect and disconnect
if len(command) == 1:
if command[0] == "connect":
connect()
continue
elif command[0] == "disconnect":
disconnect()
continue
else:
print "Please enter a valid command"
continue
#check for get, post, and window
elif len(command) == 2:
#get
if command[0] == "get":
file = str(command[1])
get(file)
continue
#post
if command[0] == "post":
file = str(command[1])
post(file)
continue
#window
if command[0] == "window":
#int type checking
try:
size = int(command[1])
except:
print "invalid window size"
continue
window(windowSize)
continue
else:
print "Please enter a valid command"
continue
def connect():
print "Connecting to server"
ip, port = clientSocket.source_address
RxP.connectToRxP(clientSocket, ip, emuportnumber)
return
