mirror of
https://github.com/Grasscutters/mitmproxy.git
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37 lines
1.4 KiB
Python
37 lines
1.4 KiB
Python
# This script makes mitmproxy switch to passthrough mode for all HTTP
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# responses with "Connection: Upgrade" header. This is useful to make
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# WebSockets work in untrusted environments.
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#
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# Note: Chrome (and possibly other browsers), when explicitly configured
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# to use a proxy (i.e. mitmproxy's regular mode), send a CONNECT request
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# to the proxy before they initiate the websocket connection.
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# To make WebSockets work in these cases, supply
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# `--ignore :80$` as an additional parameter.
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# (see http://mitmproxy.org/doc/features/passthrough.html)
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from libmproxy.protocol.http import HTTPRequest
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from libmproxy.protocol.tcp import TCPHandler
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from libmproxy.protocol import KILL
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from libmproxy.script import concurrent
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def start(context, argv):
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HTTPRequest._headers_to_strip_off.remove("Connection")
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HTTPRequest._headers_to_strip_off.remove("Upgrade")
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def done(context):
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HTTPRequest._headers_to_strip_off.append("Connection")
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HTTPRequest._headers_to_strip_off.append("Upgrade")
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@concurrent
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def response(context, flow):
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value = flow.response.headers.get_first("Connection", None)
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if value and value.upper() == "UPGRADE":
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# We need to send the response manually now...
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flow.client_conn.send(flow.response.assemble())
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# ...and then delegate to tcp passthrough.
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TCPHandler(flow.live.c, log=False).handle_messages()
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flow.reply(KILL)
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