99 lines
4.2 KiB
Markdown
99 lines
4.2 KiB
Markdown
# Hermes
|
|
|
|
### Statement
|
|
Hermes is a multi-client chat program akin to IRC written in Racket. Building
|
|
Hermes is interesting as it exposes us to various design problems namely networking,
|
|
synchronization, scheduling, and GUI design.
|
|
|
|
### Analysis
|
|
Will you use data abstraction? How?
|
|
> TCP communication will be abstracted away so will only deal with Hermes
|
|
> definition of a message.
|
|
> We will try to encrypt the messages passed around. The encryption will be
|
|
> abstracted away so we only have to think about it once during implementation
|
|
|
|
Will you use recursion? How?
|
|
> The server will continually loop waiting for connections from clients.
|
|
> The Gui will continually loop to handle input with the user, and to and fro
|
|
> Hermes.
|
|
|
|
Will you use map/filter/reduce? How?
|
|
> Map will be used for dealing editor area of clients.
|
|
|
|
Will you use object-orientation? How?
|
|
> Keeping account of the number of clients will require an object of some sort.
|
|
> With procedures to increment and decrement the number of users
|
|
|
|
Will you use functional approaches to processing your data? How?
|
|
> The communication part of Hermes is over tcp which uses a lot of functional
|
|
> approaches e.g. you start a listener which you can then pass to tcp accept.
|
|
> The result of tcp accept are two pairs of ports which we can then bind to some
|
|
> variables.
|
|
|
|
Will you use state-modification approaches? How? (If so, this should be encapsulated within objects. `set!` pretty much should only exist inside an object.)
|
|
> State-modification will be used e.g. keeping count of logged in users requires
|
|
> state modification via set! to maintain the true user account
|
|
|
|
Will you build an expression evaluator, like we did in the symbolic differentatior and the metacircular evaluator?
|
|
> Users will type their input into a text field from the GUI. We will retrieve
|
|
> the command and evaluate it to see if its a message, or a command to change
|
|
> GUI state. We will do something that resembles the metacircular evaluator.
|
|
|
|
Will you use lazy evaluation approaches?
|
|
|
|
|
|
### Deliverable and Demonstration
|
|
There are two big deliverables for this project. Code for the server(Hermes,
|
|
get it?), and the clients which not only has code for interacting with Hermes,
|
|
but also a GUI for interactivity with a user like myself.
|
|
|
|
We plan to demonstrate Hermes by running the server code on a remote machine.
|
|
We will connect to the server via our PCs running client code. We will ssh into
|
|
the remote machine to see the server running. Since Hermes is a multichat anyone
|
|
can join in the demonstration by connecting their computers to the remote
|
|
machine!
|
|
|
|
|
|
|
|
### Evaluation of Results
|
|
Evaluating Hermes is very simple. Can at least two clients hold a meaningful
|
|
conversation remotely? If Client A speaks at 11:01 am, and client B does so at
|
|
11:01 plus a few seconds, Hermes has to convey this state correctly.
|
|
|
|
|
|
## Architecture Diagram
|
|
|
|
|
|
|
|
|
|
## Schedule
|
|
Explain how you will go from proposal to finished product.
|
|
|
|
There are three deliverable milestones to explicitly define, below.
|
|
|
|
The nature of deliverables depend on your project, but may include things like processed data ready for import, core algorithms implemented, interface design prototyped, etc.
|
|
|
|
You will be expected to turn in code, documentation, and data (as appropriate) at each of these stages.
|
|
|
|
Write concrete steps for your schedule to move from concept to working system.
|
|
|
|
### First Milestone (Sun Apr 9)
|
|
Which portion of the work will be completed (and committed to Github) by this day?
|
|
|
|
### Second Milestone (Sun Apr 16)
|
|
Which portion of the work will be completed (and committed to Github) by this day?
|
|
|
|
### Public Presentation (Mon Apr 24, Wed Apr 26, or Fri Apr 28 [your date to be determined later])
|
|
What additionally will be completed before the public presentation?
|
|
|
|
## Group Responsibilities
|
|
Here each group member gets a section where they, as an individual, detail what they are responsible for in this project. Each group member writes their own Responsibility section. Include the milestones and final deliverable.
|
|
|
|
Please use Github properly: each individual must make the edits to this file representing their own section of work.
|
|
|
|
### Douglas Richardson @Doug-Richardson
|
|
will write the....
|
|
|
|
### Ibrahim Mkusa @iskm
|
|
will work on...
|