subzey/main.py

## main.py
import BaseHTTPServer
import io
import random
import time
import zlib

HOST_NAME = 'localhost'
PORT_NUMBER = 8080

gzip = zlib.compressobj(
	zlib.Z_BEST_COMPRESSION,
	zlib.DEFLATED,
	0x10 | zlib.MAX_WBITS
)

header = ''
trailer = ''
gzipped_header = ''

with io.open('template.html', mode='r', encoding='utf-8') as fp:
	(header, _, trailer) = fp.read().rpartition('{{number}}')

gzipped_header += gzip.compress(header)
gzipped_header += gzip.flush(zlib.Z_SYNC_FLUSH)


def html_gen():
	# Dump precompressed data
	yield gzipped_header

	# Imitating DB request and stuff
	time.sleep(3)

	# Copying the gzip compressobj with state
	gzip_copy = gzip.copy()

	# Writing the gzipped payload
	yield gzip_copy.compress(
		str(
			random.randrange(1, 100)
		)
	)

	# Writing the gzipped trailer
	yield gzip_copy.compress(
		trailer
	)

	# Flushing the last buffered bytes in compressobj
	yield gzip_copy.flush(zlib.Z_FINISH)


class MyHandler(BaseHTTPServer.BaseHTTPRequestHandler):
	def do_GET(self):
		if self.path != '/':
			self.send_response(404)
			self.end_headers()
			return

		"""Respond to a GET request."""
		self.send_response(200)
		self.send_header("content-type", "text/html")
		self.send_header("content-encoding", "gzip")
		self.end_headers()

		for chunk in html_gen():
			self.wfile.write(chunk)


if __name__ == '__main__':
	server_class = BaseHTTPServer.HTTPServer
	httpd = server_class((HOST_NAME, PORT_NUMBER), MyHandler)
	print time.asctime(), "Server Starts - %s:%s" % (HOST_NAME, PORT_NUMBER)
	try:
		httpd.serve_forever()
	except KeyboardInterrupt:
		pass
	httpd.server_close()
	print time.asctime(), "Server Stops - %s:%s" % (HOST_NAME, PORT_NUMBER)

## template.html
<!DOCTYPE html>
<html>
<head>
	<title>Your lucky number</title>
	<meta charset="utf-8">
	<style>
		body {
			margin: 1em;
			font: 16pt sans-serif;
			background: #eee;
		}
		h1 {
			margin: 1em;
			font-weight: normal;
			text-align: center;
			font-size: 32pt;
			color: #333;
		}
		.number {
			color: #000;
			display: block;
			margin: 1em;
			font-size: 2em;
			font-weight: bold;
		}

	</style>
</head>
<body>
	<h1>Your lucky number for today is <span class="number">{{number}}</span></h1>
</body>
</html>
	import BaseHTTPServer
	import io
	import random
	import time
	import zlib

	HOST_NAME = 'localhost'
	PORT_NUMBER = 8080

	gzip = zlib.compressobj(
	zlib.Z_BEST_COMPRESSION,
	zlib.DEFLATED,
	0x10 \| zlib.MAX_WBITS
	)

	header = ''
	trailer = ''
	gzipped_header = ''

	with io.open('template.html', mode='r', encoding='utf-8') as fp:
	(header, _, trailer) = fp.read().rpartition('{{number}}')

	gzipped_header += gzip.compress(header)
	gzipped_header += gzip.flush(zlib.Z_SYNC_FLUSH)


	def html_gen():
	# Dump precompressed data
	yield gzipped_header

	# Imitating DB request and stuff
	time.sleep(3)

	# Copying the gzip compressobj with state
	gzip_copy = gzip.copy()

	# Writing the gzipped payload
	yield gzip_copy.compress(
	str(
	random.randrange(1, 100)
	)
	)

	# Writing the gzipped trailer
	yield gzip_copy.compress(
	trailer
	)

	# Flushing the last buffered bytes in compressobj
	yield gzip_copy.flush(zlib.Z_FINISH)


	class MyHandler(BaseHTTPServer.BaseHTTPRequestHandler):
	def do_GET(self):
	if self.path != '/':
	self.send_response(404)
	self.end_headers()
	return

	"""Respond to a GET request."""
	self.send_response(200)
	self.send_header("content-type", "text/html")
	self.send_header("content-encoding", "gzip")
	self.end_headers()

	for chunk in html_gen():
	self.wfile.write(chunk)


	if __name__ == '__main__':
	server_class = BaseHTTPServer.HTTPServer
	httpd = server_class((HOST_NAME, PORT_NUMBER), MyHandler)
	print time.asctime(), "Server Starts - %s:%s" % (HOST_NAME, PORT_NUMBER)
	try:
	httpd.serve_forever()
	except KeyboardInterrupt:
	pass
	httpd.server_close()
	print time.asctime(), "Server Stops - %s:%s" % (HOST_NAME, PORT_NUMBER)
	<!DOCTYPE html>
	<html>
	<head>
	<title>Your lucky number</title>
	<meta charset="utf-8">
	<style>
	body {
	margin: 1em;
	font: 16pt sans-serif;
	background: #eee;
	}
	h1 {
	margin: 1em;
	font-weight: normal;
	text-align: center;
	font-size: 32pt;
	color: #333;
	}
	.number {
	color: #000;
	display: block;
	margin: 1em;
	font-size: 2em;
	font-weight: bold;
	}

	</style>
	</head>
	<body>
	<h1>Your lucky number for today is <span class="number">{{number}}</span></h1>
	</body>
	</html>