Transmission = 1
condition = 0
print('''Using this Sender Application You can send any value except "0"
And Enter "0" to Stop this Application''')
while (Transmission):
senderSeq = changeSeqNO(senderSeq)
data = int(
input("Enter the message for " + str(senderSeq) +
" Sequence Number : "))
if (data == 0):
Transmission = 0
print("Sender Application has been Stopped")
break
seqNumdict[senderSeq] = data
condition = 1
while (condition):
packet = make_pkt(senderSeq, data, c.compliment(c.CHECK(data)))
udt_send(packet)
message, receiver = senderSocket.recvfrom(2048)
#print(message)
#print(receiver)
extractedAck = pickle.loads(message)
if (notCurrupted(extractedAck) and isACK(extractedAck)):
print("Packet " + str(senderSeq) +
" Sent Successfully and Acknowledged")
condition = 0
break
if ((notCurrupted == False) or isNAK(extractedAck)):
print("Else condition become True")
condition = 1
continue
receiverSocket.bind(("127.0.0.1", 4500))
Ack = 271
#Nak=282
seq = 1
run = 1
print('''Server is Started
This Server can't be stopped Normally.
To Stop It you should use Keyboard Exception''')
while (run):
print("Server is waiting")
seq = changeSeqNO(seq)
#print("Data Received to the Sequence Number : "+str(seq))
dataTuple, client = receiverSocket.recvfrom(2048)
extractedTuple = pickle.loads(dataTuple)
if (notCurrupted(extractedTuple) and hasSequenceNo(extractedTuple, seq)):
print("With the Sequence Number " + str(seq) + " Received Data is " +
str(extractedTuple[1]))
packet1 = createPacket(Ack, seq, c.compliment(c.CHECK(Ack)))
udt_Send(packet1, client)
elif (notCurrupted(extractedTuple) == "False"):
if (seq == 0):
nseq = 1
else:
nseq = 0
packet1 = createPacket(Ack, nseq, c.CHECK(Nak))
udt_Send(packet1, client)
else:
#Change in the sequence number
packet1 = createPacket(Ack, seq, c.compliment(c.CHECK(Ack)))
udt_Send(packet1, client)
