asishadhikari/nwp-project2-udp-sockets

Simple UDP Client Server Application

Features :

• The client program reads input from user and performs the following actions repeatedly until directed to exit:

• If the user enters 's', it will ask user to enter a string. It then sends "xxx\n"to the server(where "xxx" is the string entered by the user, which could includeany character except"\n"), and receives a message from the server and displaythe message on the screen.

• If the user enters 'q', it will exit

• If the user enters anything else, it will ignore

• If it receives a message from the server at any time, it will print the received message in a new line.

• It will automatically send"\n" to the server every 5 seconds.S

• The server program performs following operations:

• Whenever a message that is not "\n"is received from a client, the server sends the same message back to all known active clients(i.e. the clients that the server has received messages fromwithin the past 15 seconds), including the one the message is received from.

To Build client and server program:

$ cd nwp-project2-udp-sockets/client
$ make
$ cd nwp-project2-udp-sockets/server
$ make

Run make clean in client and server directories to clear the compiled binaries.

To Run:

Run client as:

$ cd nwp-project2-udp-sockets/client
$ ./client.out xxx.xxx.xxx yy

Run server as:

$ cd nwp-project2-udp-sockets/server
$ ./server yy

Where xxx.xxx.xxx is the server IP address and yy is the port number. To use the client software, just press 's' and enter. Then type in the desired string and press enter again.

Assumptions:

• Maximum number of client connections allowed is defined
• Maximum length of message to be exchanged is defined
• These macros are defined in respective helper.h files