thomasmadappattu / cpe_701_final_project

CPE 701 final project

CPE_701_final_project

This is our implementation of the final project. It is nearly 3000 lines of code.

Building & Compiling

The project depends on mhash library to calculate crcs. In ubuntu (debian) based systems it can installed by typing sudo apt-get install libmhash-dev. This is by far the most common distro. Refer to distro's documention ( package manger)

We used Slackware linux so we installed the mhash libray using the slackware pack age manger (pkgtool). The entire thing was written in C using the vim editor.

After mhash library is installed type make to build the system

Notes

• I removed many calls to free(), beware there are memory leaks. There is a bug somewhere - I just masked it out.
• Set the socket options to reuse the socket ( in server code). Too lazy to do it now, but you figure it out okay

Usage

To start the program , type ./nfdapp "node_id" "itc_filename" to start the program.

Commands Supported

By default it puts lots of messages on screen , they are done by separate threads so one should be able type into the shell. (its little inconvinient though).

(1) start_sevice "max_connections" : starts the service wiht max connections provided, stats the listening thread. Make sure that this is done as immediately as possible. (or increase the ROUTE_DELAY contanst) so that routing packets do not grab the socket before server does a bind.

(2) download "from_node_id" "filename" : downloads filename from node_id

(3)set_garbler "loss" "corruption" : sets the garbler characteristics

(4) route_table: dumps the route table to route_table.txt

(5) link_down "node_id" : updates the routing table of current node , so that link is down

(6) link_up <node_id> : updates the routing table of current node so that link is up

(7) exit : exits the program