Byte Stuffing in Computer Network Using Python

Byte Stuffing Mechanism

If the pattern of the flag byte is present in the message byte sequence, there should be a strategy so that the receiver does not consider the pattern as the end of the frame. Here, a special byte called the escape character (ESC) is stuffed before every byte in the message with the same pattern as the flag byte. If the ESC sequence is found in the message byte, then another ESC byte is stuffed before it.

Code :

st=input('Enter the Data :') flag=input('Flag :') esc=input('Esc :') def Sender(st,flag,esc): a=st.replace(esc,esc*2) y=a.replace(flag,esc+flag) return y print("Stuffed : "+Sender(st,flag,esc))