Grading guide for Project 5:
-----------------------------

1. Testing messenger application on desktops. (10 points)

2. Testing network5.c or network6.c on desktops. (50 points)

3. Testing on Jornadas/Tablets. (10 points)

4. Code lookthrough. (30 points)

For this section, things we particularly noticed (and took off points for):

- does not check if local host already in discovery path before adding itself
to it.

- does not deregister alarm after getting a ROUTE_REPLY.

- concurrent threads trigger different route discovery packets to the same destination.

- one only route discovery process can go on at a time (inefficient).

- does not refresh cache every 3 seconds.

- approach not modular. All types of packets handled in the same function.

- any other errors.