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http2: server can send WindowUpdate frames as well

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Thomas Kriechbaumer 2015-09-03 14:09:59 +02:00
parent bc93600a66
commit 1f6d05f89f
1 changed files with 9 additions and 2 deletions
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11
libmproxy/protocol/http.py
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@ -246,9 +246,16 @@ class Http2Layer(_HttpLayer):
# respond with pong # respond with pong
self.server_conn.send(PingFrame(flags=Frame.FLAG_ACK, payload=frame.payload).to_bytes()) self.server_conn.send(PingFrame(flags=Frame.FLAG_ACK, payload=frame.payload).to_bytes())
return return
self.log("Unexpected HTTP2 Frame: %s" % frame.human_readable(), "info") self.log("Unexpected HTTP2 frame from client: %s" % frame.human_readable(), "info")
def handle_unexpected_frame_from_server(self, frame): def handle_unexpected_frame_from_server(self, frame):
if isinstance(frame, WindowUpdateFrame):
# Servers are sending WindowUpdate frames depending on their flow control algorithm.
# Since we cannot predict these frames, and we do not need to respond to them,
# simply accept them, and hide them from the log.
# Ideally we should keep track of our own flow control window and
# stall transmission if the outgoing flow control buffer is full.
return
if isinstance(frame, GoAwayFrame): if isinstance(frame, GoAwayFrame):
# Server wants to terminate the connection, # Server wants to terminate the connection,
# relay it to the client. # relay it to the client.
@ -258,7 +265,7 @@ class Http2Layer(_HttpLayer):
# respond with pong # respond with pong
self.client_conn.send(PingFrame(flags=Frame.FLAG_ACK, payload=frame.payload).to_bytes()) self.client_conn.send(PingFrame(flags=Frame.FLAG_ACK, payload=frame.payload).to_bytes())
return return
self.log("Unexpected HTTP2 Frame: %s" % frame.human_readable(), "info") self.log("Unexpected HTTP2 frame from server: %s" % frame.human_readable(), "info")
class ConnectServerConnection(object): class ConnectServerConnection(object):