diff --git a/synapse/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py
index d5013e8e97..cc1db763ae 100644
--- a/synapse/http/matrixfederationclient.py
+++ b/synapse/http/matrixfederationclient.py
@@ -153,12 +153,18 @@ class MatrixFederationRequest:
"""Query arguments.
"""
- txn_id: Optional[str] = None
- """Unique ID for this request (for logging)
+ txn_id: str = attr.ib(init=False)
+ """Unique ID for this request (for logging), this is autogenerated.
"""
- uri: bytes = attr.ib(init=False)
- """The URI of this request
+ uri: bytes = b""
+ """The URI of this request, usually generated from the above information.
+ """
+
+ _generate_uri: bool = True
+ """True to automatically generate the uri field based on the above information.
+
+ Set to False if manually configuring the URI.
"""
def __attrs_post_init__(self) -> None:
@@ -168,22 +174,23 @@ class MatrixFederationRequest:
object.__setattr__(self, "txn_id", txn_id)
- destination_bytes = self.destination.encode("ascii")
- path_bytes = self.path.encode("ascii")
- query_bytes = encode_query_args(self.query)
-
- # The object is frozen so we can pre-compute this.
- uri = urllib.parse.urlunparse(
- (
- b"matrix-federation",
- destination_bytes,
- path_bytes,
- None,
- query_bytes,
- b"",
+ if self._generate_uri:
+ destination_bytes = self.destination.encode("ascii")
+ path_bytes = self.path.encode("ascii")
+ query_bytes = encode_query_args(self.query)
+
+ # The object is frozen so we can pre-compute this.
+ uri = urllib.parse.urlunparse(
+ (
+ b"matrix-federation",
+ destination_bytes,
+ path_bytes,
+ None,
+ query_bytes,
+ b"",
+ )
)
- )
- object.__setattr__(self, "uri", uri)
+ object.__setattr__(self, "uri", uri)
def get_json(self) -> Optional[JsonDict]:
if self.json_callback:
@@ -513,6 +520,7 @@ class MatrixFederationHttpClient:
ignore_backoff: bool = False,
backoff_on_404: bool = False,
backoff_on_all_error_codes: bool = False,
+ follow_redirects: bool = False,
) -> IResponse:
"""
Sends a request to the given server.
@@ -555,6 +563,9 @@ class MatrixFederationHttpClient:
backoff_on_404: Back off if we get a 404
backoff_on_all_error_codes: Back off if we get any error response
+ follow_redirects: True to follow the Location header of 307/308 redirect
+ responses. This does not recurse.
+
Returns:
Resolves with the HTTP response object on success.
@@ -714,6 +725,26 @@ class MatrixFederationHttpClient:
response.code,
response_phrase,
)
+ elif (
+ response.code in (307, 308)
+ and follow_redirects
+ and response.headers.hasHeader("Location")
+ ):
+ # The Location header *might* be relative so resolve it.
+ location = response.headers.getRawHeaders(b"Location")[0]
+ new_uri = urllib.parse.urljoin(request.uri, location)
+
+ return await self._send_request(
+ attr.evolve(request, uri=new_uri, generate_uri=False),
+ retry_on_dns_fail,
+ timeout,
+ long_retries,
+ ignore_backoff,
+ backoff_on_404,
+ backoff_on_all_error_codes,
+ # Do not continue following redirects.
+ follow_redirects=False,
+ )
else:
logger.info(
"{%s} [%s] Got response headers: %d %s",
@@ -1383,6 +1414,7 @@ class MatrixFederationHttpClient:
retry_on_dns_fail: bool = True,
max_size: Optional[int] = None,
ignore_backoff: bool = False,
+ follow_redirects: bool = False,
) -> Tuple[int, Dict[bytes, List[bytes]]]:
"""GETs a file from a given homeserver
Args:
@@ -1392,6 +1424,8 @@ class MatrixFederationHttpClient:
args: Optional dictionary used to create the query string.
ignore_backoff: true to ignore the historical backoff data
and try the request anyway.
+ follow_redirects: True to follow the Location header of 307/308 redirect
+ responses. This does not recurse.
Returns:
Resolves with an (int,dict) tuple of
@@ -1412,7 +1446,10 @@ class MatrixFederationHttpClient:
)
response = await self._send_request(
- request, retry_on_dns_fail=retry_on_dns_fail, ignore_backoff=ignore_backoff
+ request,
+ retry_on_dns_fail=retry_on_dns_fail,
+ ignore_backoff=ignore_backoff,
+ follow_redirects=follow_redirects,
)
headers = dict(response.headers.getAllRawHeaders())
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