#Author - Ether Wei

###Introduction This is a Java datagram socket based Go-Back-N simulation program. It implements the FSM based GBN internet protocol.

###Class Notes

####ByteConvertor This class is used to convert bytes into short or int. Or convert short to int to bytes.

####InetLogger A file based logger that dedicated to log information during the procession of GBN protocol.

####FlawedSocket A flawed socket is used to monitor the actual envrionment in our daily lifes. It simulates package lost and package corruption. By default, 20% of the packages are lost and 20% of packages are corrupted.

####GBN.sender This package contains classes on the sender side of the protocol. It requires 3 threads to run. Namely, timer thread which controls the timing, sender thread which is the main thread, receiver thread which receives all the incoming packages through the internet.

####GBN.receiver This package contains classes on the receiver side of the protocol. It requires 1 threads to run.

###After notes You can run Main.java to check out. Be sure to modify the data paths in Main.java before running the example. Also, if you find the program is a little bit too slow, you may comment out all the logging statements in source files.