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Diffstat (limited to 'examples/ignore_websocket.py')
| -rw-r--r-- | examples/ignore_websocket.py | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/examples/ignore_websocket.py b/examples/ignore_websocket.py new file mode 100644 index 00000000..48093951 --- /dev/null +++ b/examples/ignore_websocket.py @@ -0,0 +1,34 @@ +# This script makes mitmproxy switch to passthrough mode for all HTTP +# responses with "Connection: Upgrade" header. This is useful to make +# WebSockets work in untrusted environments. +# +# Note: Chrome (and possibly other browsers), when explicitly configured +# to use a proxy (i.e. mitmproxy's regular mode), send a CONNECT request +# to the proxy before they initiate the websocket connection. +# To make WebSockets work in these cases, supply +# `--ignore :80$` as an additional parameter. +# (see http://mitmproxy.org/doc/features/passthrough.html) + +from libmproxy.protocol.http import HTTPRequest +from libmproxy.protocol.tcp import TCPHandler +from libmproxy.protocol import KILL +from libmproxy.script import concurrent + + +def start(context, argv): + HTTPRequest._headers_to_strip_off.remove("Connection") + HTTPRequest._headers_to_strip_off.remove("Upgrade") + + +def done(context): + HTTPRequest._headers_to_strip_off.append("Connection") + HTTPRequest._headers_to_strip_off.append("Upgrade") + +@concurrent +def response(context, flow): + if flow.response.headers.get_first("Connection", None) == "Upgrade": + # We need to send the response manually now... + flow.client_conn.send(flow.response.assemble()) + # ...and then delegate to tcp passthrough. + TCPHandler(flow.live.c, log=False).handle_messages() + flow.reply(KILL)
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