prev up next Introduction to Python (by Ilan Schnell) 
#!/usr/bin/python
from SocketServer import BaseRequestHandler, TCPServer
import sys

if len(sys.argv) != 2:
    print 'USAGE: %s <port>' % sys.argv[0]
    sys.exit(2)

def htmlSave(s):
    htmlentList = [ ('&','&amp;'), ('<','&lt;'), ('>','&gt;') ]
    return reduce( lambda c, (a,b): c.replace(a,b), htmlentList, s )

class RequestHandler(BaseRequestHandler):
    def handle(self):
        print "Client connected:", self.client_address
        
        content="""<html><head><title>HTTP Server</title></head><body>
<h2>Information about this HTTP/TCP request:</h2>
<p>IP: <b>%s</b><br />
 Port: <b>%s</b></p>
<h4>Message:</h4>
<pre style='border: solid 1px #bdf; background-color: #def;'>%s</pre>
</body></html>
""" % ( self.client_address[0],
        self.client_address[1],
        htmlSave(self.request.recv(2**16).replace('\r','<CR>')) )
        
        self.request.sendall( """HTTP/1.0 200 OK\r
Content-Type: text/html; charset=utf-8\r
Content-Length: %s\r
\r\n%s""" % ( len(content), content ))
        
        self.request.close()

TCPServer(('',int(sys.argv[1])), RequestHandler).serve_forever()