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#!/usr/bin/env python3
"""Simple server written using an event loop."""
import argparse
import logging
import os
import sys
try:
import ssl
except ImportError: # pragma: no cover
ssl = None
import asyncio
import aiohttp
import aiohttp.server
assert sys.version >= '3.3', 'Please use Python 3.3 or higher.'
class HttpRequestHandler(aiohttp.server.ServerHttpProtocol):
@asyncio.coroutine
def handle_request(self, message, payload):
print('method = {!r}; path = {!r}; version = {!r}'.format(
message.method, message.path, message.version))
path = message.path
if (not (path.isprintable() and path.startswith('/')) or '/.' in path):
print('bad path', repr(path))
path = None
else:
path = '.' + path
if not os.path.exists(path):
print('no file', repr(path))
path = None
else:
isdir = os.path.isdir(path)
if not path:
raise aiohttp.HttpProcessingError(code=404)
for hdr, val in message.headers.items():
print(hdr, val)
if isdir and not path.endswith('/'):
path = path + '/'
raise aiohttp.HttpProcessingError(
code=302, headers=(('URI', path), ('Location', path)))
response = aiohttp.Response(
self.writer, 200, http_version=message.version)
response.add_header('Transfer-Encoding', 'chunked')
# content encoding
accept_encoding = message.headers.get('accept-encoding', '').lower()
if 'deflate' in accept_encoding:
response.add_header('Content-Encoding', 'deflate')
response.add_compression_filter('deflate')
elif 'gzip' in accept_encoding:
response.add_header('Content-Encoding', 'gzip')
response.add_compression_filter('gzip')
response.add_chunking_filter(1025)
if isdir:
response.add_header('Content-type', 'text/html')
response.send_headers()
response.write(b'<ul>\r\n')
for name in sorted(os.listdir(path)):
if name.isprintable() and not name.startswith('.'):
try:
bname = name.encode('ascii')
except UnicodeError:
pass
else:
if os.path.isdir(os.path.join(path, name)):
response.write(b'<li><a href="' + bname +
b'/">' + bname + b'/</a></li>\r\n')
else:
response.write(b'<li><a href="' + bname +
b'">' + bname + b'</a></li>\r\n')
response.write(b'</ul>')
else:
response.add_header('Content-type', 'text/plain')
response.send_headers()
try:
with open(path, 'rb') as fp:
chunk = fp.read(8192)
while chunk:
response.write(chunk)
chunk = fp.read(8192)
except OSError:
response.write(b'Cannot open')
yield from response.write_eof()
if response.keep_alive():
self.keep_alive(True)
ARGS = argparse.ArgumentParser(description="Run simple http server.")
ARGS.add_argument(
'--host', action="store", dest='host',
default='127.0.0.1', help='Host name')
ARGS.add_argument(
'--port', action="store", dest='port',
default=8080, type=int, help='Port number')
# make iocp and ssl mutually exclusive because ProactorEventLoop is
# incompatible with SSL
group = ARGS.add_mutually_exclusive_group()
group.add_argument(
'--iocp', action="store_true", dest='iocp', help='Windows IOCP event loop')
group.add_argument(
'--ssl', action="store_true", dest='ssl', help='Run ssl mode.')
ARGS.add_argument(
'--sslcert', action="store", dest='certfile', help='SSL cert file.')
ARGS.add_argument(
'--sslkey', action="store", dest='keyfile', help='SSL key file.')
def main():
args = ARGS.parse_args()
if ':' in args.host:
args.host, port = args.host.split(':', 1)
args.port = int(port)
if args.iocp:
from asyncio import windows_events
sys.argv.remove('--iocp')
logging.info('using iocp')
el = windows_events.ProactorEventLoop()
asyncio.set_event_loop(el)
if args.ssl:
here = os.path.join(os.path.dirname(__file__), 'tests')
if args.certfile:
certfile = args.certfile or os.path.join(here, 'sample.crt')
keyfile = args.keyfile or os.path.join(here, 'sample.key')
else:
certfile = os.path.join(here, 'sample.crt')
keyfile = os.path.join(here, 'sample.key')
sslcontext = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
sslcontext.load_cert_chain(certfile, keyfile)
else:
sslcontext = None
loop = asyncio.get_event_loop()
f = loop.create_server(
lambda: HttpRequestHandler(debug=True, keep_alive=75),
args.host, args.port,
ssl=sslcontext)
svr = loop.run_until_complete(f)
socks = svr.sockets
print('serving on', socks[0].getsockname())
try:
loop.run_forever()
except KeyboardInterrupt:
pass
if __name__ == '__main__':
main()
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