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Better exception handling

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This commit is contained in:
Andrew Morgan 2019-03-18 17:45:54 +00:00
parent ecea5af491
commit 621e7f37f1
2 changed files with 22 additions and 24 deletions
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41
synapse/http/matrixfederationclient.py
View File

@ -221,30 +221,31 @@ class MatrixFederationHttpClient(object):
"""
try:
response = yield self._send_request(**send_request_args)
except HttpResponseException as e:
# Received a 400. Raise unless we're retrying
if not try_trailing_slash_on_400:
raise e
# Check if it's necessary to retry with a trailing slash
body = yield _handle_json_response(
self.hs.get_reactor(), self.default_timeout, request, response,
)
# Retry with a trailing slash if we received a 400 with
# 'M_UNRECOGNIZED' which some endpoints can return when omitting a
# trailing slash on Synapse <=v0.99.2.
if not (response.code == 400 and body.get("errcode") == "M_UNRECOGNIZED"):
# Enable backoff if initially disabled
send_request_args["backoff_on_404"] = backoff_on_404
# Add trailing slash
send_request_args["request"].path += "/"
response = yield self._send_request(**send_request_args)
# Check if it's necessary to retry with a trailing slash
body = yield _handle_json_response(
self.hs.get_reactor(), self.default_timeout, request, response,
)
except HttpResponseException as e:
if not try_trailing_slash_on_400:
# Received an error >= 300. Raise unless we're retrying
raise e
except:
raise e
# Retry with a trailing slash if we received a 400 with
# 'M_UNRECOGNIZED' which some endpoints can return when omitting a
# trailing slash on Synapse <= v0.99.2.
# Enable backoff if initially disabled
send_request_args["backoff_on_404"] = backoff_on_404
# Add trailing slash
send_request_args["request"].path += "/"
response = yield self._send_request(**send_request_args)
body = yield _handle_json_response(
self.hs.get_reactor(), self.default_timeout, request, response,
)
defer.returnValue(body)

5
tests/http/test_fedclient.py
View File

@ -272,7 +272,7 @@ class FederationClientTests(HomeserverTestCase):
"""
If a connection is made to a client but the client rejects it due to
requiring a trailing slash. We need to retry the request with a
trailing slash. Workaround for Synapse <=v0.99.2, explained in #3622.
trailing slash. Workaround for Synapse <= v0.99.2, explained in #3622.
"""
d = self.cl.get_json(
"testserv:8008", "foo/bar", try_trailing_slash_on_400=True,
@ -302,9 +302,6 @@ class FederationClientTests(HomeserverTestCase):
b'{"errcode":"M_UNRECOGNIZED","error":"Unrecognized request"}'
)
# We should get a 400 response, then try again
self.pump()
# We should get another request wiht a trailing slash
self.assertRegex(conn.value(), b"^GET /foo/bar/")