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#!/usr/bin/env python3
"""Simple server written using an event loop."""
import argparse
import asyncio
import logging
import os
import sys
import aiohttp
import aiohttp.server
try:
import ssl
except ImportError: # pragma: no cover
ssl = None
class HttpRequestHandler(aiohttp.server.ServerHttpProtocol):
async 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")
await 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()
|
