Files
mitmproxy/mitmproxy/addons/disable_h2c_upgrade.py
Thomas Kriechbaumer 39a8d4dc22 disable h2c upgrades
2016-12-16 11:29:07 +01:00

22 lines
720 B
Python

class DisableH2CleartextUpgrade:
"""
We currently only support HTTP/2 over a TLS connection. Some clients try
to upgrade a connection from HTTP/1.1 to h2c, so we need to remove those
headers to avoid protocol errors if one endpoints suddenly starts sending
HTTP/2 frames.
"""
def process_flow(self, f):
if f.request.headers.get('upgrade', '') == 'h2c':
del f.request.headers['upgrade']
if 'connection' in f.request.headers:
del f.request.headers['connection']
if 'http2-settings' in f.request.headers:
del f.request.headers['http2-settings']
# Handlers
def request(self, f):
self.process_flow(f)