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-rw-r--r--synapse/http/matrixfederationclient.py33
1 files changed, 20 insertions, 13 deletions
diff --git a/synapse/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py
index c2ec3caa0e..0b9475debd 100644
--- a/synapse/http/matrixfederationclient.py
+++ b/synapse/http/matrixfederationclient.py
@@ -23,6 +23,8 @@ from http import HTTPStatus
 from io import BytesIO, StringIO
 from typing import (
     TYPE_CHECKING,
+    Any,
+    BinaryIO,
     Callable,
     Dict,
     Generic,
@@ -44,7 +46,7 @@ from typing_extensions import Literal
 from twisted.internet import defer
 from twisted.internet.error import DNSLookupError
 from twisted.internet.interfaces import IReactorTime
-from twisted.internet.task import _EPSILON, Cooperator
+from twisted.internet.task import Cooperator
 from twisted.web.client import ResponseFailed
 from twisted.web.http_headers import Headers
 from twisted.web.iweb import IBodyProducer, IResponse
@@ -58,11 +60,13 @@ from synapse.api.errors import (
     RequestSendFailed,
     SynapseError,
 )
+from synapse.crypto.context_factory import FederationPolicyForHTTPS
 from synapse.http import QuieterFileBodyProducer
 from synapse.http.client import (
     BlacklistingAgentWrapper,
     BodyExceededMaxSize,
     ByteWriteable,
+    _make_scheduler,
     encode_query_args,
     read_body_with_max_size,
 )
@@ -181,7 +185,7 @@ class JsonParser(ByteParser[Union[JsonDict, list]]):
 
     CONTENT_TYPE = "application/json"
 
-    def __init__(self):
+    def __init__(self) -> None:
         self._buffer = StringIO()
         self._binary_wrapper = BinaryIOWrapper(self._buffer)
 
@@ -299,7 +303,9 @@ async def _handle_response(
 class BinaryIOWrapper:
     """A wrapper for a TextIO which converts from bytes on the fly."""
 
-    def __init__(self, file: typing.TextIO, encoding="utf-8", errors="strict"):
+    def __init__(
+        self, file: typing.TextIO, encoding: str = "utf-8", errors: str = "strict"
+    ):
         self.decoder = codecs.getincrementaldecoder(encoding)(errors)
         self.file = file
 
@@ -317,7 +323,11 @@ class MatrixFederationHttpClient:
             requests.
     """
 
-    def __init__(self, hs: "HomeServer", tls_client_options_factory):
+    def __init__(
+        self,
+        hs: "HomeServer",
+        tls_client_options_factory: Optional[FederationPolicyForHTTPS],
+    ):
         self.hs = hs
         self.signing_key = hs.signing_key
         self.server_name = hs.hostname
@@ -348,10 +358,7 @@ class MatrixFederationHttpClient:
         self.version_string_bytes = hs.version_string.encode("ascii")
         self.default_timeout = 60
 
-        def schedule(x):
-            self.reactor.callLater(_EPSILON, x)
-
-        self._cooperator = Cooperator(scheduler=schedule)
+        self._cooperator = Cooperator(scheduler=_make_scheduler(self.reactor))
 
         self._sleeper = AwakenableSleeper(self.reactor)
 
@@ -364,7 +371,7 @@ class MatrixFederationHttpClient:
         self,
         request: MatrixFederationRequest,
         try_trailing_slash_on_400: bool = False,
-        **send_request_args,
+        **send_request_args: Any,
     ) -> IResponse:
         """Wrapper for _send_request which can optionally retry the request
         upon receiving a combination of a 400 HTTP response code and a
@@ -740,7 +747,7 @@ class MatrixFederationHttpClient:
         for key, sig in request["signatures"][self.server_name].items():
             auth_headers.append(
                 (
-                    'X-Matrix origin=%s,key="%s",sig="%s",destination="%s"'
+                    'X-Matrix origin="%s",key="%s",sig="%s",destination="%s"'
                     % (
                         self.server_name,
                         key,
@@ -1159,7 +1166,7 @@ class MatrixFederationHttpClient:
         self,
         destination: str,
         path: str,
-        output_stream,
+        output_stream: BinaryIO,
         args: Optional[QueryParams] = None,
         retry_on_dns_fail: bool = True,
         max_size: Optional[int] = None,
@@ -1250,10 +1257,10 @@ class MatrixFederationHttpClient:
         return length, headers
 
 
-def _flatten_response_never_received(e):
+def _flatten_response_never_received(e: BaseException) -> str:
     if hasattr(e, "reasons"):
         reasons = ", ".join(
-            _flatten_response_never_received(f.value) for f in e.reasons
+            _flatten_response_never_received(f.value) for f in e.reasons  # type: ignore[attr-defined]
         )
 
         return "%s:[%s]" % (type(e).__name__, reasons)