Some notes and code for learning the basics of how HTTP works.
Very much WIP rough notes designed to be led by an instructor.
Run:
$ telnet devd.io 8000
Trying 127.0.0.1...
Connected to devd.io.
Escape character is '^]'.
GET /foo.html HTTP/1.1
host: devd.io:8000
Note that the protocol version ("HTTP/1.1") must be present, and that the host header must be present.
Then: http devd.io:8000/hello.txt http devd.io:8000/foo.html
Use nc with -c:
""" nc -c 127.0.0.1 8000 # The "-c" is VERY important for CRLF! GET / HTTP/1.0 Host: 127.0.0.1:8000
"""
To monitor traffic:
sudo tcpflow -p -c -i lo0 port 8000
To hex dump, add "-D":
sudo tcpflow -p -c -i lo0 -D port 8000
The Python Tornado example:
python src/04-time-tornado.py
Show results with:
http localhost:8000/hello
http localhost:8000/hello\?name=Andrew
http localhost:8000/ # get current time
http localhost:8000/?tz= # same as not giving any tz arg
http localhost:8000/?tz=local
http localhost:8000/?tz=UTC
http localhost:8000/?tz=Australia/Sydney
http localhost:8000/?tz=EST
http localhost:8000/?tz=Australia/Perth