Allow response of `/send_join` to be larger. (#10093)

Fixes #10087.
pull/10101/head
Erik Johnston 2021-05-28 16:28:01 +01:00 committed by GitHub
parent 8e15c92c2f
commit 84cf3e47a0
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3 changed files with 21 additions and 1 deletions

1
changelog.d/10093.bugfix Normal file
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@ -0,0 +1 @@
Fix HTTP response size limit to allow joining very large rooms over federation.

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@ -35,6 +35,11 @@ from synapse.types import JsonDict
logger = logging.getLogger(__name__)
# Send join responses can be huge, so we set a separate limit here. The response
# is parsed in a streaming manner, which helps alleviate the issue of memory
# usage a bit.
MAX_RESPONSE_SIZE_SEND_JOIN = 500 * 1024 * 1024
class TransportLayerClient:
"""Sends federation HTTP requests to other servers"""
@ -261,6 +266,7 @@ class TransportLayerClient:
path=path,
data=content,
parser=SendJoinParser(room_version, v1_api=True),
max_response_size=MAX_RESPONSE_SIZE_SEND_JOIN,
)
return response
@ -276,6 +282,7 @@ class TransportLayerClient:
path=path,
data=content,
parser=SendJoinParser(room_version, v1_api=False),
max_response_size=MAX_RESPONSE_SIZE_SEND_JOIN,
)
return response

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@ -205,6 +205,7 @@ async def _handle_response(
response: IResponse,
start_ms: int,
parser: ByteParser[T],
max_response_size: Optional[int] = None,
) -> T:
"""
Reads the body of a response with a timeout and sends it to a parser
@ -216,15 +217,20 @@ async def _handle_response(
response: response to the request
start_ms: Timestamp when request was made
parser: The parser for the response
max_response_size: The maximum size to read from the response, if None
uses the default.
Returns:
The parsed response
"""
if max_response_size is None:
max_response_size = MAX_RESPONSE_SIZE
try:
check_content_type_is(response.headers, parser.CONTENT_TYPE)
d = read_body_with_max_size(response, parser, MAX_RESPONSE_SIZE)
d = read_body_with_max_size(response, parser, max_response_size)
d = timeout_deferred(d, timeout=timeout_sec, reactor=reactor)
length = await make_deferred_yieldable(d)
@ -735,6 +741,7 @@ class MatrixFederationHttpClient:
backoff_on_404: bool = False,
try_trailing_slash_on_400: bool = False,
parser: Literal[None] = None,
max_response_size: Optional[int] = None,
) -> Union[JsonDict, list]:
...
@ -752,6 +759,7 @@ class MatrixFederationHttpClient:
backoff_on_404: bool = False,
try_trailing_slash_on_400: bool = False,
parser: Optional[ByteParser[T]] = None,
max_response_size: Optional[int] = None,
) -> T:
...
@ -768,6 +776,7 @@ class MatrixFederationHttpClient:
backoff_on_404: bool = False,
try_trailing_slash_on_400: bool = False,
parser: Optional[ByteParser] = None,
max_response_size: Optional[int] = None,
):
"""Sends the specified json data using PUT
@ -803,6 +812,8 @@ class MatrixFederationHttpClient:
enabled.
parser: The parser to use to decode the response. Defaults to
parsing as JSON.
max_response_size: The maximum size to read from the response, if None
uses the default.
Returns:
Succeeds when we get a 2xx HTTP response. The
@ -853,6 +864,7 @@ class MatrixFederationHttpClient:
response,
start_ms,
parser=parser,
max_response_size=max_response_size,
)
return body