Bulletin Boards


Introduction

A multi-process application with the use of named pipes and Low-Level I/O. Clients communicate with a server with named pipes and gives commands to write text, send files (etc images), create channels while others can read and download them. Also a bash script to monitors which processes of Bulletin Boards app are running and which have stoped.

Compile

Make command to compile and make clean to remove all object files.

Run

To run the server
./board path
For example:
./board ./myboard

To run the client
./boardPost ./path
For example:
./boardPost ./myboard

Functionality

Board

By running the board process a new board is created(or connected if it aldready exists) in the path which was given as an attribute. A board can have a lot of channels for receiving files(the files are send throught named pipes). The files are then saved to the disk and the messages are printed to the stdin. Commands

createchannel id name

Creates a new chanel to the board with id being the identifier and the name of the channel.

getmessages

Prints the messages of a channel and the files are saved to the disk, if the file already exists it add an extension at the name of the file.

exit

closes the client while the server is still running(I use fork to create a server and a client)

shutdown

Terminates the server

BoardPost

By running the boardPost process the user is connected with a board server and can send files and messages throught the named pipes. Commands

list

Prints all the available channels

write id message

Send a message at the channel with id

send id file

Sends a file to the channel with id