You will write code to read binary data of a UDP header and generate a response header.

The data in a UDP header is shown in the table below. The header has 64-bit (8 bytes) long data. It is composed of four parts: source port, destination port, length, and checksum. As you see, each part is 16-bit (2 bytes) long.

00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Source Port																Destination Port
32	33	34	35	36	37	38	39	40	41	42	43	44	45	46	47	48	49	50	51	52	53	54	55	56	57	58	59	60	61	62	63
Length																Checksum

Instructions

Write a program that will do the following:

Read the binary file given below into an unsigned char array (unsigned char [8]).

Print the header in the format described below.

Create a response header based on the rules listed below.

Print the response header in the same way the original header was printed.

Write it to a new file.

The code must have the following functions:

int printheader(unsigned char []); prints out given header data

int readfile(unsigned char [], char []); reads header data from a file to an array Tip: To read binary data from a file, use the fread() function

int writefile(unsigned char [], char []); writes header data from an array to a file Tip: To write binary data to a file, use the fwrite() function

Submit the following:

Proof of compilation by Makefile

Source code

Output for the given binary data (each for test1.bin and test2.bin) Your program must print required parts of both request and response headers, and the output must be self-explanatory (don't just print a bunch of numbers).

Response header generated by your program (each for test1.bin and test2.bin)

Input files

Download the following UDP header binary files. For your guidance, the data in each file is displayed in hexadecimal.

test1.bin

02 38 5C AD 00 04 03 B0

test2.bin

FF FF CA 1D 70 E1 AA BE

Format to print a header

You must print the following information about a UDP header. Source port, destination port and length must be printed in unsigned decimal. Checksum must be printedn in hexadecimal.

Source port (unsigned decimal)

Destination port (unsigned decimal)

Length (unsigned decimal)

Checksum (hexadecimal)

Rules to generate a response header file

For every part, don't use any arithmetic operators, i.e., "+", "-", "*" and "/".

By bitwise operation, check if the source port is above 61439 (EFFF). If so, zero out the first (most significant) two bits of it. Otherwise, don't change it.

After that, the source and destination ports must be switched.

By bitwise operation, multiply Length by 2. You can ignore overflow.

Flip each of the red bits specified below in Checksum, i.e., 1 should be changed into 0, and vice versa.

48	49	50	51	52	53	54	55	56	57	58	59	60	61	62	63
Checksum

Example:

If you have the following input data in hexadecimal:

00 53 13 56 02 00 FF 00

The output would be:

13 56 00 53 04 00 EB 28