An HTTP server that occasionally sends data to a long-lived request.

slow-server.py

#!/usr/bin/python

import BaseHTTPServer
import SocketServer

import argparse
import time
import urlparse

parser = argparse.ArgumentParser(description='An HTTP server that occasionally sends data to a long-lived request.')
parser.add_argument('--port', type = int, default = 8080,
                    help = 'HTTP listen port. (default: %(default)s)')
args = parser.parse_args()

class SlowAndSteady(BaseHTTPServer.BaseHTTPRequestHandler):
    protocol_version = 'HTTP/1.1'
    def do_GET(self) :

        query = urlparse.parse_qs(urlparse.urlparse(self.path).query)
        
        size  = int(query.get('size', [10])[0])
        sleep = float(query.get('sleep', [0])[0])
        chunks = int(query.get('chunks', [1])[0])
        
        self.send_response(200)
        self.end_headers()

        chunk = 'h' * size
        for i in range(chunks) :
            if i > 0 :
                # don't sleep before the first chunk
                time.sleep(sleep)

            print i
            self.wfile.write("i=%d\n" % i)
            self.wfile.write(chunk)
            self.wfile.write("\ni=%d\n" % i)

class SlowServer(SocketServer.TCPServer) :
    allow_reuse_address = True
    
httpd = SlowServer(('', args.port), SlowAndSteady)

print 'serving at port', args.port
httpd.serve_forever()