def receive_frame(self, frame):
if frame.type == WindowUpdateFrame.type:
# self.logger.debug("WindowUpdateFrame %d", frame.window_increment)
self.increase_remote_window_size(frame.window_increment)
elif frame.type == PingFrame.type:
if 'ACK' in frame.flags:
ping_time = struct.unpack("!d", frame.opaque_data)[0]
time_now = time.time()
rtt = (time_now - ping_time) * 1000
if rtt < 0:
self.logger.error("rtt:%f ping_time:%f now:%f", rtt, ping_time, time_now)
self.rtt = rtt
self.ping_on_way -= 1
#self.logger.debug("RTT:%d, on_way:%d", self.rtt, self.ping_on_way)
if self.keep_running and self.ping_on_way == 0:
self.accept_task = True
else:
# The spec requires us to reply with PING+ACK and identical data.
p = PingFrame(0)
p.flags.add('ACK')
p.opaque_data = frame.opaque_data
self._send_cb(p)
elif frame.type == SettingsFrame.type:
if 'ACK' not in frame.flags:
# send ACK as soon as possible
f = SettingsFrame(0)
f.flags.add('ACK')
self._send_cb(f)
# this may trigger send DataFrame blocked by remote window
self._update_settings(frame)
else:
self.accept_task = True
self.idle_cb()
elif frame.type == GoAwayFrame.type:
# If we get GoAway with error code zero, we are doing a graceful
# shutdown and all is well. Otherwise, throw an exception.
# If an error occured, try to read the error description from
# code registry otherwise use the frame's additional data.
error_string = frame._extra_info()
time_cost = time.time() - self.last_recv_time
if frame.additional_data != "session_timed_out":
self.logger.warn("goaway:%s, t:%d", error_string, time_cost)
self.close("GoAway:%s inactive time:%d" % (error_string, time_cost))
elif frame.type == BlockedFrame.type:
self.logger.warn("%s get BlockedFrame", self.ip_str)
elif frame.type in FRAMES:
# This frame isn't valid at this point.
#raise ValueError("Unexpected frame %s." % frame)
self.logger.error("%s Unexpected frame %s.", self.ip_str, frame)
else: # pragma: no cover
# Unexpected frames belong to extensions. Just drop it on the
# floor, but log so that users know that something happened.
self.logger.error("%s Received unknown frame, type %d", self.ip_str, frame.type)
def send_ping(self):
# Use less for GAE server.
p = PingFrame(0)
p.opaque_data = struct.pack("!d", time.time())
self.send_queue.put(p)
self.last_ping_time = time.time()
self.ping_on_way += 1
def receive_frame(self, frame):
if frame.type == WindowUpdateFrame.type:
# self.logger.debug("WindowUpdateFrame %d", frame.window_increment)
self.increase_remote_window_size(frame.window_increment)
elif frame.type == PingFrame.type:
if 'ACK' in frame.flags:
ping_time = struct.unpack("!d", frame.opaque_data)[0]
time_now = time.time()
rtt = (time_now - ping_time) * 1000
if rtt < 0:
self.logger.error("rtt:%f ping_time:%f now:%f", rtt, ping_time, time_now)
self.rtt = rtt
self.ping_on_way -= 1
#self.logger.debug("RTT:%d, on_way:%d", self.rtt, self.ping_on_way)
if self.keep_running and self.ping_on_way == 0:
self.accept_task = True
else:
# The spec requires us to reply with PING+ACK and identical data.
p = PingFrame(0)
p.flags.add('ACK')
p.opaque_data = frame.opaque_data
self._send_cb(p)
elif frame.type == SettingsFrame.type:
if 'ACK' not in frame.flags:
# send ACK as soon as possible
f = SettingsFrame(0)
f.flags.add('ACK')
self._send_cb(f)
# this may trigger send DataFrame blocked by remote window
self._update_settings(frame)
else:
self.accept_task = True
self.idle_cb()
elif frame.type == GoAwayFrame.type:
# If we get GoAway with error code zero, we are doing a graceful
# shutdown and all is well. Otherwise, throw an exception.
# If an error occured, try to read the error description from
# code registry otherwise use the frame's additional data.
error_string = frame._extra_info()
time_cost = time.time() - self.last_recv_time
if frame.additional_data != "session_timed_out":
self.logger.warn("goaway:%s, t:%d", error_string, time_cost)
self.close("GoAway:%s inactive time:%d" % (error_string, time_cost))
elif frame.type == BlockedFrame.type:
self.logger.warn("%s get BlockedFrame", self.ip)
elif frame.type in FRAMES:
# This frame isn't valid at this point.
#raise ValueError("Unexpected frame %s." % frame)
self.logger.error("%s Unexpected frame %s.", self.ip, frame)
else: # pragma: no cover
# Unexpected frames belong to extensions. Just drop it on the
# floor, but log so that users know that something happened.
self.logger.error("%s Received unknown frame, type %d", self.ip, frame.type)
def send_ping(self):
p = PingFrame(0)
p.opaque_data = struct.pack("!d", time.time())
#self.send_queue.put(p)
self._send_cb(p)
self.last_ping_time = time.time()
self.ping_on_way += 1
def send_ping(self):
# Use less for GAE server.
p = PingFrame(0)
p.opaque_data = struct.pack("!d", time.time())
self.send_queue.put(p)
self.last_ping_time = time.time()
self.ping_on_way += 1
def test_ping_with_ack_ignored(self):
c = HTTP20Connection('www.google.com')
f = PingFrame(0)
f.flags = set(['ACK'])
f.opaque_data = b'12345678'
def data_cb(frame, tolerate_peer_gone=False):
assert False, 'should not be called'
c._send_cb = data_cb
c.receive_frame(f)
def test_ping_with_ack_ignored(self):
c = HTTP20Connection('www.google.com')
f = PingFrame(0)
f.flags = set(['ACK'])
f.opaque_data = b'12345678'
def data_cb(frame, tolerate_peer_gone=False):
assert False, 'should not be called'
c._send_cb = data_cb
c.receive_frame(f)
def test_ping_without_ack_gets_reply(self):
c = HTTP20Connection('www.google.com')
f = PingFrame(0)
f.opaque_data = b'12345678'
frames = []
def data_cb(frame, tolerate_peer_gone=False):
frames.append(frame)
c._send_cb = data_cb
c.receive_frame(f)
assert len(frames) == 1
assert frames[0].type == PingFrame.type
assert frames[0].flags == set(['ACK'])
assert frames[0].opaque_data == b'12345678'
def test_ping_without_ack_gets_reply(self):
c = HTTP20Connection('www.google.com')
f = PingFrame(0)
f.opaque_data = b'12345678'
frames = []
def data_cb(frame, tolerate_peer_gone=False):
frames.append(frame)
c._send_cb = data_cb
c.receive_frame(f)
assert len(frames) == 1
assert frames[0].type == PingFrame.type
assert frames[0].flags == set(['ACK'])
assert frames[0].opaque_data == b'12345678'
