Network(Study)

study network algorithm with C and x86

Summary

Q1

Implement the TCP-based file transfer program as shown below.

• C language
• Client sends the file name and contents of the file to the server.
• Server receives file name and store the received data from the client.
• Server is iterative type.(Missing Version)
• Server and client program should support both ASCII-based file and binary file.
• Do not use sleep function in the programs.
• After uploading the file, the client program should display the elapsed time and throughput.

Usage

Server: # ./tcp_ft_server
Client: # ./tcp_ft_client

Q2

Implement UDP-based file transfer program. Convert the programs in Q1 to the UDP-based file transfer programs.

• C language

Usage

Server: # ./udp_ft_server
Client: # ./udp_ft_client

Q3

Implement the program using “gethostbyname()” as shown below.

• You should implement the program using gethostbyname().
• Source code filename: hostname.c
• Your program should display all of aliases, address type, and IP addresses.

Usage

# ./hostname

(example)
# ./hostname www.naver.com
Official name: e60630.a.akamiedge.net
Aliases 1: www.naver.com
Aliases 2: www.naver.com.nheos.com
Aliases 3: www.naver.com.edgekey.net
Address type: AF_INET
IP addr 1: 23.46.23.18

Q4

Implement the stop-and-wait protocol-based file transfer program over UDP as shown below.

• You should improve the UDP-based file transfer program that you implemented for Q2.
• You should implement stop-and-wait protocol for reliable data transfer.
• For the stop-wait-protocol, you can consider the rdt 3.0 protocol in the Chapter 3.
• You don’t need to check the packet corruption. You just implement the packet retransmission for the packet loss.
• You should implement the both server and client program using C language. And upload your source codes in the server following the guide.
• Client sends the file name and contents of the file to the server.
• Server receives file name and store the received data from the client.
• Server and client can finish the program after file receiving.
• Server and client program should support both ASCII-based file and binary file.
• After uploading the file, the client program should display the elapsed time and throughput.
• Your programs should follow the usage below.

Usage

Server: # ./udp_rdt_ft_server
Client: # ./udp_rdt_ft_client < port>

• Your programs can freely display the status of file transferring, e.g., transmission, retransmission, ACK, and timeout, etc.