def test_on_settings(self):
client_conn = Connection(
self.client_stream, client_side=True, on_unhandled=mock.Mock())
client_conn.initiate_connection()
server_conn = Connection(
self.server_stream, client_side=False, on_settings=self.on_settings)
server_conn.initiate_connection()
yield server_conn.read_bytes()
# NOTE: h11 initiate_connection will send default settings
self.assertIsNotNone(self.settings)
self.settings = None
client_conn.send_update_settings({
4: 11111, 5: 22222})
yield server_conn.read_bytes()
self.assertIsNotNone(self.settings)
new_settings = {id: cs.new_value for (id, cs) in self.settings.iteritems()}
self.assertEqual(new_settings, {4: 11111, 5: 22222})
class Http2Layer(ApplicationLayer):
'''
Http2Layer: Responsible for handling the http2 request and response.
'''
def __init__(self, server_state, context):
super(Http2Layer, self).__init__(server_state, context)
self.src_conn = Connection(
self.src_stream, client_side=False,
conn_type="source",
on_request=self.on_request,
on_settings=self.on_src_settings,
on_window_updates=self.on_src_window_updates,
on_priority_updates=self.on_src_priority_updates,
on_reset=self.on_src_reset,
on_terminate=self.on_src_terminate,
readonly=(context.mode == "replay"))
self.dest_conn = Connection(
self.dest_stream, client_side=True,
conn_type="destination",
on_response=self.on_response,
on_push=self.on_push,
on_settings=self.on_dest_settings,
on_window_updates=self.on_dest_window_updates,
on_terminate=self.on_dest_terminate,
on_reset=self.on_dest_reset)
self.streams = dict()
self.src_to_dest_ids = dict([(0, 0)])
self.dest_to_src_ids = dict([(0, 0)])
self._future = concurrent.Future()
@gen.coroutine
def process_and_return_context(self):
yield self._init_h2_connection()
self.src_stream.read_until_close(
streaming_callback=self.src_conn.receive)
self.src_stream.set_close_callback(self.on_src_close)
self.dest_stream.read_until_close(
streaming_callback=self.dest_conn.receive)
self.dest_stream.set_close_callback(self.on_dest_close)
result = yield self._future
raise gen.Return(result)
@gen.coroutine
def _init_h2_connection(self):
self.dest_conn.initiate_connection()
yield self.dest_conn.flush()
self.src_conn.initiate_connection()
yield self.src_conn.flush()
def on_src_close(self):
logger.debug("{0}: src stream closed".format(self))
self.dest_stream.close()
self.layer_finish()
def on_dest_close(self):
logger.debug("{0}: dest stream closed".format(self))
self.src_stream.close()
self.layer_finish()
def layer_finish(self):
if self._future.running():
self._future.set_result(self.context)
def update_ids(self, src_stream_id, dest_stream_id):
self.src_to_dest_ids[src_stream_id] = dest_stream_id
self.dest_to_src_ids[dest_stream_id] = src_stream_id
def on_request(self, stream_id, request, priority_updated):
dest_stream_id = self.dest_conn.get_next_available_stream_id()
self.update_ids(stream_id, dest_stream_id)
if priority_updated:
priority_weight = priority_updated.weight
priority_exclusive = priority_updated.exclusive
priority_depends_on = self.safe_mapping_id(
self.src_to_dest_ids, priority_updated.depends_on)
else:
priority_weight = None
priority_exclusive = None
priority_depends_on = None
stream = Stream(self, self.context, stream_id, dest_stream_id)
stream.on_request(
request,
priority_weight=priority_weight,
priority_exclusive=priority_exclusive,
priority_depends_on=priority_depends_on)
self.streams[stream_id] = stream
def on_push(self, pushed_stream_id, parent_stream_id, request):
self.update_ids(pushed_stream_id, pushed_stream_id)
target_parent_stream_id = self.dest_to_src_ids[parent_stream_id]
stream = Stream(self, self.context, pushed_stream_id, pushed_stream_id)
stream.on_push(request, target_parent_stream_id)
self.streams[pushed_stream_id] = stream
def on_response(self, stream_id, response):
src_stream_id = self.dest_to_src_ids[stream_id]
self.streams[src_stream_id].on_response(response)
self.on_finish(src_stream_id)
def on_finish(self, src_stream_id):
stream = self.streams[src_stream_id]
self.interceptor.publish(
layer_context=self.context, request=stream.request,
response=stream.response)
del self.streams[src_stream_id]
if self.context.mode == "replay":
self.src_stream.close()
self.dest_stream.close()
def on_src_settings(self, changed_settings):
new_settings = {
id: cs.new_value for (id, cs) in changed_settings.iteritems()
}
self.dest_conn.send_update_settings(new_settings)
def on_dest_settings(self, changed_settings):
new_settings = {
id: cs.new_value for (id, cs) in changed_settings.iteritems()
}
self.src_conn.send_update_settings(new_settings)
def on_src_window_updates(self, stream_id, delta):
target_stream_id = self.safe_mapping_id(self.src_to_dest_ids, stream_id)
self.dest_conn.send_window_updates(target_stream_id, delta)
def on_dest_window_updates(self, stream_id, delta):
target_stream_id = self.safe_mapping_id(self.dest_to_src_ids, stream_id)
self.src_conn.send_window_updates(target_stream_id, delta)
def on_src_priority_updates(self, stream_id, depends_on,
weight, exclusive):
target_stream_id = self.safe_mapping_id(
self.src_to_dest_ids, stream_id)
target_depends_on = self.safe_mapping_id(
self.src_to_dest_ids, depends_on)
if target_stream_id:
self.dest_conn.send_priority_updates(
target_stream_id, target_depends_on, weight, exclusive)
def safe_mapping_id(self, ids, stream_id):
if stream_id in ids:
return ids[stream_id]
return 0
def on_src_reset(self, stream_id, error_code):
target_stream_id = self.src_to_dest_ids[stream_id]
self.dest_conn.send_reset(target_stream_id, error_code)
def on_dest_reset(self, stream_id, error_code):
target_stream_id = self.dest_to_src_ids[stream_id]
self.src_conn.send_reset(target_stream_id, error_code)
def on_src_terminate(self, additional_data, error_code, last_stream_id):
self.dest_conn.send_terminate(
error_code=error_code,
additional_data=additional_data,
last_stream_id=last_stream_id)
def on_dest_terminate(self, additional_data, error_code, last_stream_id):
self.src_conn.send_terminate(
error_code=error_code,
additional_data=additional_data,
last_stream_id=last_stream_id)