Exploring the HyperText Transport Protocol You are to retrieve the following document using the HTTP protocol in a way that you can examine the HTTP Response headers. http://data.pr4e.org/intro-short.txt There are three ways that you might retrieve this web page and look at the response headers: Preferred: Modify the socket1.py program to retrie…

py4e_ex_12

import socket

mysock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
mysock.connect(('data.pr4e.org', 80))
cmd = 'GET http://data.pr4e.org/intro-short.txt HTTP/1.0\r\n\r\n'.encode()
mysock.send(cmd)

while True:
    data = mysock.recv(512)
    if (len(data) < 1):
        break
    print(data.decode())
mysock.close()

Last-Modified:
Sat, 13 May 2017 11:22:22 GMT
ETag:
1d3-54f6609240717
Content-Length:
467
Cache-Control:
max-age=0, no-cache, no-store, must-revalidate
Content-Type:
text/plain

This is working.

THIS IS WORKING:
Last-Modified:
Sat, 13 May 2017 11:22:22 GMT
ETag:
1d3-54f6609240717
Content-Length:
467
Cache-Control:
max-age=0, no-cache, no-store, must-revalidate
Content-Type:
text/plain

![Error](https://user-images.githubusercontent.com/89157542/132367328-d2420673-fed3-4f9a-8366-6e56374accf8.PNG
can you help me?

Server: Apache/2.4.18 (Ubuntu)
Last-Modified: Sat, 13 May 2017 11:22:22 GMT
ETag: "1d3-54f6609240717"
Accept-Ranges: bytes
Content-Length: 467
Cache-Control: max-age=0, no-cache, no-store, must-revalidate
Pragma: no-cache
Expires: Wed, 11 Jan 1984 05:00:00 GMT
Connection: close
Content-Type: text/plain

thank you

This is very simple. First, put the code inside pycharm, you need only change the - Preferred: Modify the [socket1.py]
The code given in coursera:

Code in Pycharm:

Then RUN, you will get the answer for the task.

wonderful!

what is cache control??

If you run the code in what ever IDE (Pycharm for example) you are using you will see:

Last-Modified: Sat, 13 May 2017 11:22:22 GMT
ETag: "1d3-54f6609240717"
Accept-Ranges: bytes
Content-Length: 467
Cache-Control: max-age=0, no-cache, no-store, must-revalidate
Pragma: no-cache
Expires: Wed, 11 Jan 1984 05:00:00 GMT
Connection: close
Content-Type: text/plain

Why should you learn to write programs?

Writing programs (or programming) is a very creative
and rewarding activity. You can write programs for
many reasons, ranging from making your living to solving
a difficult data analysis problem to having fun to helping
someone else solve a problem. This book assumes that
everyone needs to know how to program, and that once
you know how to program you will figure out what you want
to do with your newfound skills.

Process finished with exit code 0

Ensure you are highlighting the code if you have not saved it otherwise it will exit with a code 0

This is very simple. First, put the code inside pycharm, you need only change the - Preferred: Modify the [socket1.py] The code given in coursera:

Code in Pycharm:

Then RUN, you will get the answer for the task.

Hi. With the same code running in Bracket text editor I am getting error in cmd. Can anyone please help

1. save it as newsocket.py in any other directory, not in which you're currently working.
2. problem
   

solution