2012-08-16 12:36:30 -04:00
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#!/usr/bin/env python
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# The example SPDY server. You need Python 3.3 or later because we
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# use TLS NPN. Put private key and certificate file in the current
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# working directory.
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import socket
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import threading
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import socketserver
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import ssl
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import io
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2012-08-22 12:59:21 -04:00
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import select
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2012-08-16 12:36:30 -04:00
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import spdylay
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# private key file
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KEY_FILE='server.key'
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# certificate file
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CERT_FILE='server.crt'
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def send_cb(session, data):
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ssctrl = session.user_data
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2012-08-22 12:59:21 -04:00
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wlen = ssctrl.sock.send(data)
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return wlen
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2012-08-16 12:36:30 -04:00
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2012-08-22 08:48:41 -04:00
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def read_cb(session, stream_id, length, read_ctrl, source):
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data = source.read(length)
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if not data:
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read_ctrl.flags = spdylay.READ_EOF
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return data
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2012-08-16 12:36:30 -04:00
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def on_ctrl_recv_cb(session, frame):
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ssctrl = session.user_data
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if frame.frame_type == spdylay.SYN_STREAM:
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2012-08-17 10:39:48 -04:00
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stctrl = StreamCtrl(frame.stream_id)
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stctrl.headers.extend(frame.nv)
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ssctrl.streams[frame.stream_id] = stctrl
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def on_stream_close_cb(session, stream_id, status_code):
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ssctrl = session.user_data
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if stream_id in ssctrl.streams:
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del ssctrl.streams[stream_id]
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def on_request_recv_cb(session, stream_id):
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ssctrl = session.user_data
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if stream_id in ssctrl.streams:
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stctrl = ssctrl.streams[stream_id]
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for name, value in stctrl.headers:
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2012-08-23 08:21:13 -04:00
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if name == 'user-agent':
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user_agent = value
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2012-08-17 10:39:48 -04:00
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break
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2012-08-16 12:36:30 -04:00
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else:
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user_agent = ''
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html = '''\
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<html>
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<head><title>SPDY FTW</title></head>
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<body>
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<h1>SPDY FTW</h1>
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<p>The age of HTTP/1.1 is over. The time of SPDY has come.</p>
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<p>Your browser {} supports SPDY.</p>
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</body>
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</html>
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'''.format(user_agent)
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data_prd = spdylay.DataProvider(io.BytesIO(bytes(html, 'utf-8')),
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read_cb)
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2012-08-17 10:39:48 -04:00
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stctrl.data_prd = data_prd
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2012-08-23 08:21:13 -04:00
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nv = [(':status', '200 OK'),
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(':version', 'HTTP/1.1'),
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('server', 'python-spdylay')]
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2012-08-17 10:39:48 -04:00
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session.submit_response(stream_id, nv, data_prd)
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2012-08-16 12:36:30 -04:00
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class StreamCtrl:
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2012-08-17 10:39:48 -04:00
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def __init__(self, stream_id):
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2012-08-16 12:36:30 -04:00
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self.stream_id = stream_id
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2012-08-17 10:39:48 -04:00
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self.data_prd = None
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self.headers = []
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2012-08-16 12:36:30 -04:00
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class SessionCtrl:
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def __init__(self, sock):
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self.sock = sock
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self.streams = {}
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class ThreadedSPDYRequestHandler(socketserver.BaseRequestHandler):
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def handle(self):
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ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
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ctx.load_cert_chain(CERT_FILE, KEY_FILE)
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ctx.set_npn_protocols(['spdy/3', 'spdy/2'])
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2012-08-22 12:59:21 -04:00
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sock = ctx.wrap_socket(self.request, server_side=True,
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do_handshake_on_connect=False)
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sock.setblocking(False)
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while True:
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try:
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sock.do_handshake()
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break
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except ssl.SSLWantReadError as e:
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select.select([sock], [], [])
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except ssl.SSLWantWriteError as e:
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select.select([], [sock], [])
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2012-08-16 12:36:30 -04:00
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if sock.selected_npn_protocol() == 'spdy/3':
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version = spdylay.PROTO_SPDY3
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elif sock.selected_npn_protocol() == 'spdy/2':
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version = spdylay.PROTO_SPDY2
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else:
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return
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ssctrl = SessionCtrl(sock)
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session = spdylay.Session(spdylay.SERVER,
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version,
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send_cb=send_cb,
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on_ctrl_recv_cb=on_ctrl_recv_cb,
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2012-08-17 10:39:48 -04:00
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on_stream_close_cb=on_stream_close_cb,
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on_request_recv_cb=on_request_recv_cb,
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2012-08-16 12:36:30 -04:00
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user_data=ssctrl)
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session.submit_settings(\
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spdylay.FLAG_SETTINGS_NONE,
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[(spdylay.SETTINGS_MAX_CONCURRENT_STREAMS,
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spdylay.ID_FLAG_SETTINGS_NONE,
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100)])
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2012-08-22 12:59:21 -04:00
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2012-08-16 12:36:30 -04:00
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while session.want_read() or session.want_write():
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2012-08-22 14:15:35 -04:00
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want_read = want_write = False
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2012-08-22 12:59:21 -04:00
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try:
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data = sock.recv(4096)
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if data:
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session.recv(data)
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else:
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break
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2012-08-22 14:15:35 -04:00
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except ssl.SSLWantReadError:
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want_read = True
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except ssl.SSLWantWriteError:
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want_write = True
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try:
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2012-08-16 12:36:30 -04:00
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session.send()
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2012-08-22 12:59:21 -04:00
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except ssl.SSLWantReadError:
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2012-08-22 14:15:35 -04:00
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want_read = True
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2012-08-22 12:59:21 -04:00
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except ssl.SSLWantWriteError:
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2012-08-22 14:15:35 -04:00
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want_write = True
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if want_read or want_write:
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select.select([sock] if want_read else [],
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[sock] if want_write else [],
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[])
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2012-08-16 12:36:30 -04:00
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class ThreadedSPDYServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
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def __init__(self, svaddr, handler):
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self.allow_reuse_address = True
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socketserver.TCPServer.__init__(self, svaddr, handler)
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if __name__ == "__main__":
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# Port 0 means to select an arbitrary unused port
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HOST, PORT = "localhost", 3000
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server = ThreadedSPDYServer((HOST, PORT), ThreadedSPDYRequestHandler)
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ip, port = server.server_address
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# Start a thread with the server -- that thread will then start one
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# more thread for each request
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server_thread = threading.Thread(target=server.serve_forever)
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# Exit the server thread when the main thread terminates
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#server_thread.daemon = True
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server_thread.start()
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