Sunday, December 18, 2011

Django ain't for This

While I'm searching for tutorial about creating simple static web page using Django, I surprised that i found almost nothing. There is Django documentation for it but I think it's too much; creating microblogger, forum, note, wiki, etc.

According what I found after surfed a while, Django isn't for this. I was suggestet to use basehttpserver instead.



Here what I found

"I have python scripts which provides output and I need to have this output on the web."


That is not what Django is for. What you want to do can be achieved with something as simple as this:

from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer

class Handler(BaseHTTPRequestHandler):
    def do_GET(self):
        self.send_response(200)
        self.send_header("Content-type", "text/html")
        self.end_headers()

        self.wfile.write("magic content goes here")

if __name__=="__main__":
    try:
        server = HTTPServer(("", 8080), Handler)
        server.serve_forever()
    except KeyboardInterrupt:
        server.socket.close()
Observe the self.wfile.write line. Whatever you write there ends up in the browser. If it matters, you can use self.path in the Handler to check which file was requested.

Tested with Python 2.6.4, accessed the server with Chrome browser.

..........

If you need a quick web server running and you don't want to mess with setting up apache or something similar, then Python can help. Python comes with a simple builtin HTTP server. With the help of this little HTTP server you can turn any directory in your system into your web server directory. The only thing you need to have installed is Python.

Practically speaking this is very useful to share files inside your local network. Implementing this tiny but hugely useful HTTP server is very simple, its just a single line command.

Assume that I would like to share my home directory
Open up a terminal and type:

$ cd 
$ python -m SimpleHTTPServer

That's it! Now your http server will start in port 8000. You will get the message:
Serving HTTP on 0.0.0.0 port 8000 ...

Now open a browser and type the computer address like:
http://192.168.1.1:8000


If you on computer that is running server, you can also access it via:
http://127.0.0.1:8000


If the directory has a file named index.html, that file will be served as the initial file. If there is no index.html, then the files in the directory will be listed.
If you wish to change the port that's used start the program via:

$ python -m SimpleHTTPServer 8080

If you want to only serve on localhost you'll need to write a custom Python program such as:


import sys
import BaseHTTPServer
from SimpleHTTPServer import SimpleHTTPRequestHandler

HandlerClass = SimpleHTTPRequestHandler
ServerClass  = BaseHTTPServer.HTTPServer
Protocol     = "HTTP/1.0"

if sys.argv[1:]:
    port = int(sys.argv[1])
else:
    port = 8000
server_address = ('127.0.0.1', port)

HandlerClass.protocol_version = Protocol
httpd = ServerClass(server_address, HandlerClass)

sa = httpd.socket.getsockname()
print "Serving HTTP on", sa[0], "port", sa[1], "..."
httpd.serve_forever()