Programming Assignment 3
CS 33600
Network Programming
Spring, 2024

This assignment makes use of the files contained in this zip file. This assignment is due Friday, March 22.

This assignment is based on the two client/server pairs,

from client-server-experiments.zip. In this assignment you will write four client/server pairs

that implement four more addition protocols.

The addition servers in client-server-experiments.zip accept a varying number of sequences of integers to add together. Those servers use the end-of-file (eof) condition to know when there are no more sequences to add up. The addition servers in this assignment will use either a counter or a sentinel to know when there are no more sequences to add up.

The servers AdditionClient_Hw3_v1.java and AdditionClient_Hw3_v2.java should both use a counter to determine when there are no more sequences expected from the client. The server AdditionClient_Hw3_v1.java should use a counter to know when it has read the last integer in a sequence. The server AdditionClient_Hw3_v2.java should use a sentinel to know when it has read the last integer in a sequence.

The servers AdditionClient_Hw3_v3.java and AdditionClient_Hw3_v4.java should both use a sentinel to determine when there are no more sequences expected from the client. The server AdditionClient_Hw3_v3.java should use a counter to know when it has read the last integer in a sequence. The server AdditionClient_Hw3_v4.java should use a sentinel to know when it has read the last integer in a sequence.

In summary, the four client/servers pairs should implement the following patterns.

In all of the client server pairs, the sentinel value should be any negative integer.

Here is what three client requests look like for each of the four client/server pairs. 

    3 4 1 2 3 4 5 -1 -2 -3 -4 -5 3 10 -11 12

    3 1 2 3 4 -1 1 2 3 4 5 -1 10 11 12 -1

    4 1 2 3 4 5 -1 -2 -3 -4 -5 3 10 -11 12 -1

    1 2 3 4 -1 1 2 3 4 5 -1 10 11 12 -1 -1

Make sure you understand why each line represents exactly three requests from a single client and make sure that you can determine what numbers are in each request.

In the zip file there are data files data_v1, data_v2, data_v3, and data_v4 that provide test data for each client/server pair. To use the test data, run a server from a command-line console. 

   > java AdditionServer_Hw3_v1

Then run its companion server from another command-line console and redirect the appropriate data file into the client. 

  > java AdditionClient_Hw3_v1  <  data_v1

The resulting output from the client should match (except for the pid number) data_v1_client_results.txt and the resulting output from the server should match (except for the pid and ip numbers) data_v1_server_results.txt.

Turn in a zip file called CS336Hw3Surname.zip (where Surname is your last name) containing your versions of

This assignment is due Friday, March 22.