Compilation

$ make

Notes on code execution

File Structure

• a.out is a sample file to transfer. It's and executable for a "Hello" prining programme.
• scriptfile and script_log are for replaying the server code
• Client executaion is seen in readme.pdf as text and screenshot.

├── a.out
├── client
│   └── client.c
├── makefile
├── readme.md
├── readme.pdf
├── scriptfile
├── script_log
└── server.c

In one terminal, execute the server code by:

Server

$ ./s 4444
# format ./s [port no]

The server will now prompt the user to enter an interface number from the oprions displayed. Please type the required integer, and press enter.

Client

For each client, open a new terminal, and run:

$ cd ./client
$ ./c 127.0.0.1 4444
# format ./c [server ip] [server port no]

The client will now prompt the user for a filename. Please type a valid filename and press enter. Type quit to exit.

Replay demo

For best results, please run when terminal is >= 94 characters wide. This will replay the demo in real time. The replay will show an execution of the server code for about 2 minutes.

$ scriptreplay --timing=script_log scriptfile

For the 6 instances of clients tested, execution is seen in the screenshot below:

• Requested the server.c file

❯ ./c 10.4.19.67 4444
# Connection established! type msg after the prompt 'C>' 
C>server.c
Scanned: server.c
Reading file in 7184 chunks
File perms: 664
C>quit
Scanned: quit
# exiting

• Requested an executable, a.out. We can see that the file successfuly runs

❯ ./c 10.4.19.67 4444
# Connection established! type msg after the prompt 'C>' 
C>a.out
Scanned: a.out
Reading file in 16696 chunks
File perms: 775
C>quit
Scanned: quit
# exiting
❯ ./a.out
Hello!

• Joined and quit

❯ ./c 10.4.19.67 4444
# Connection established! type msg after the prompt 'C>' 
C>quit
Scanned: quit
# exiting

• Joined and quit

❯ ./c 10.4.19.67 4444
# Connection established! type msg after the prompt 'C>' 
C>quit
Scanned: quit
# exiting

• Joined and quit

❯ ./c 10.4.19.67 4444
# Connection established! type msg after the prompt 'C>' 
C>quit
Scanned: quit
# exiting

• Extra client, only able to join if someone above quit
• Requests the server executable
• We can see that the large executable file s successfully executs.

❯ ./c 10.4.19.67 4444
# Server refused connection
❯ ./c 10.4.19.67 4444
# Connection established! type msg after the prompt 'C>' 
C>s
Scanned: s
Reading file in 22664 chunks
File perms: 775
C>quit
Scanned: quit
# exiting
❯ ./s 4445
[info] Interface no. 0 : lo     address: 127.0.0.1
[info] Interface no. 1 : enp3s0 address: 10.4.19.67
[info] Interface no. 2 : virbr0 address: 192.168.122.1
[action] please type the interface number you wish to use: