Today's mission

You will need to write simple file transfer client and server in language C.
Please modify to the sample code to achieve this goal.
Fill in your own code by following the hint in the code.

/**
  TODO:
  print something here.
**/

Requirements

Requirement of Server
Requirement of Client

Compile with makefile

Makefile

all: server.c client.c
	gcc server.c -o server
	gcc client.c -o client

clean:
	rm -rf server
	rm -rf client

compile

$ make

Server

You should implement following functions in your server.

• The server should uses port 8888
• Returns files list to client when the client connects immediately to the server. (We have provided this function which scans all the file under the same directory.)

For example:

# Client side
$ ./client 127.0.0.1
[✓] Connect to server.
[✓] Server reply!
Files on server
yesterday.mp3
homework.pdf
network.jpg

• Returns files which client wants to download.

For example:

# Client side
yesterday.mp3 # user input
[-] Downloading `yesterday.mp3`
[✓] Download successfully!
_ # user can continue to send download request.

Client

• User can assign ip address to connect the server with command line argument.
• Support user inputs the file name to download file from server, per file per input.
• Create a /download folder to store downloaded files.
• Input .exit to disconnect from server.

Note:
Server and client should keep connected unless user inputs .exit

Hint

• Use read/write to send and receive informations.
• Understand how to use argv.

Deadline

If your team don't finish the lab in the class, you can still demonstrate this lab when TA time (14:00 ~ 17:00 on Wed)

• Deadline: 100%, before 2015/11/27
• Deadline: 80%, before 2015/12/4
• Deadline: 60%, before 2015/12/11
• After 2015/12/11, your submission is not accepted.

Problems

Filing any problem in issues or nthu ilms is welcome.