The hypothetical environment for which you will be programming consists of 100
UNIX workstations of various types and capacities. All these workstations are
connected by ethernet and use TCP/IP. Most of the workstations have their own
disks but these disks are to be used for "official" work purposes only.
Because all workstations are on a bridged network, NFS traffic has to be kept
to a minimum.
A fortune is a message (mostly funny) which is normally returned by the
`fortune' program. However, the fortune program requires a large database of
messages and when the operating systems of the workstations were installed, the
system managers did not install the standard UNIX fortune program.
Recently, some of the workers have been asking for the `fortune' program to be
installed on their workstations. Your task is to provide the fortune service
without having to install the large database on every workstation.
Design and implement both a fortune server and client which can be used by
A user should be able to type `fortune' and get exactly one fortune displayed
on the screen.
My opinions have changed, but not the fact that I am right.
task is to create two programs: a client called fortune and a server
In completing this assignment, you need to follow the following steps:
(Please keep in mind that these specifications are for the end product only.
Feel free to do things differently during development.)
- Design and document a protocol you are going to use. Keep in mind that
this assignment is labeled 1a... This means that you have to design your
protocol such that it will be easy to extend. Try to think of what kinds of
things could be added to the protocol but don't make it too complicated.
- Design and implement your fortune server. This server will need to get
fortunes from a database. You can do this using the fortune command on the
system you are working on. You should be
able to test your server using the telnet of mconnect command.
(Look in the man pages for these commands on how to specify a specific port to
- Design and implement your fortune client.
The server needs to be started with two arguments. The first argument will be
the port number it will be listening on while the second argument is the path
to the fortune program.
Once the server has been started, it should fork itself and print its PID (this
is so that the server can easily be killed once it has started.) After this it
should be able to accept any number of connections concurrently. When a new
connection comes in, the server should fork and the child should deal with the
connection with the client.
The client needs to be started with two arguments. The first argument will be
the name of the host the server is running on and the second argument will be
the port number your server is using to accept connections.
The only output from the client should be the fortune.
You will loose points if you violate the following rules:
The following needs to be turned in to get credit for the assignment:
- The server may NEVER create zombies.
- The server may NOT use the system() library function.
- All code needs to be written in either C or C++.
- There may not be any bugs in your code (documented or not)
- Your project should be in a subdirectory in your account.
- A Makefile should be present which builds the whole project.
- Your code should be well commented.
- A document which describes the design and use of the
- A listing of all your source code and Makefile. (Use enscript -2rG or
something similar as long as each page describes who, what and
Everything should be kept together in some way. Staples are