Patch-overlapping Python context after the fix
synapse/http/client.py — class:SimpleHttpClient (lines 280-739)
class SimpleHttpClient:
"""
A simple, no-frills HTTP client with methods that wrap up common ways of
using HTTP in Matrix
"""
def __init__(
self,
hs: "HomeServer",
treq_args: Dict[str, Any] = {},
ip_whitelist: Optional[IPSet] = None,
ip_blacklist: Optional[IPSet] = None,
http_proxy: Optional[bytes] = None,
https_proxy: Optional[bytes] = None,
):
"""
Args:
hs
treq_args: Extra keyword arguments to be given to treq.request.
ip_blacklist: The IP addresses that are blacklisted that
we may not request.
ip_whitelist: The whitelisted IP addresses, that we can
request if it were otherwise caught in a blacklist.
http_proxy: proxy server to use for http connections. host[:port]
https_proxy: proxy server to use for https connections. host[:port]
"""
self.hs = hs
self._ip_whitelist = ip_whitelist
self._ip_blacklist = ip_blacklist
self._extra_treq_args = treq_args
self.user_agent = hs.version_string
self.clock = hs.get_clock()
if hs.config.user_agent_suffix:
self.user_agent = "%s %s" % (self.user_agent, hs.config.user_agent_suffix)
self._cooperator = Cooperator(scheduler=_make_scheduler(hs.get_reactor()))
self.user_agent = self.user_agent.encode("ascii")
if self._ip_blacklist:
self.reactor = BlacklistingReactorWrapper(
hs.get_reactor(), self._ip_whitelist, self._ip_blacklist
)
else:
self.reactor = hs.get_reactor()
pool = HTTPConnectionPool(self.reactor)
pool.maxPersistentPerHost = max((100 * hs.config.caches.global_factor, 5))
pool.cachedConnectionTimeout = 2 * 60
self.agent = ProxyAgent(
self.reactor,
connectTimeout=15,
contextFactory=self.hs.get_http_client_context_factory(),
pool=pool,
http_proxy=http_proxy,
https_proxy=https_proxy,
)
if self._ip_blacklist:
self.agent = BlacklistingAgentWrapper(
self.agent,
ip_whitelist=self._ip_whitelist,
ip_blacklist=self._ip_blacklist,
)
async def request(
self,
method: str,
uri: str,
data: Optional[bytes] = None,
headers: Optional[Headers] = None,
) -> IResponse:
"""
Args:
method: HTTP method to use.
uri: URI to query.
data: Data to send in the request body, if applicable.
headers: Request headers.
Returns:
Response object, once the headers have been read.
Raises:
RequestTimedOutError if the request times out before the headers are read
"""
outgoing_requests_counter.labels(method).inc()
logger.debug("Sending request %s %s", method, redact_uri(uri))
with start_active_span(
"outgoing-client-request",
tags={
tags.SPAN_KIND: tags.SPAN_KIND_RPC_CLIENT,
tags.HTTP_METHOD: method,
tags.HTTP_URL: uri,
},
finish_on_close=True,
):
try:
body_producer = None
if data is not None:
body_producer = QuieterFileBodyProducer(
BytesIO(data), cooperator=self._cooperator,
)
request_deferred = treq.request(
method,
uri,
agent=self.agent,
data=body_producer,
headers=headers,
**self._extra_treq_args,
)
request_deferred = timeout_deferred(
request_deferred, 60, self.hs.get_reactor(),
)
request_deferred.addErrback(_timeout_to_request_timed_out_error)
response = await make_deferred_yieldable(request_deferred)
incoming_responses_counter.labels(method, response.code).inc()
logger.info(
"Received response to %s %s: %s",
method,
redact_uri(uri),
response.code,
)
return response
except Exception as e:
incoming_responses_counter.labels(method, "ERR").inc()
logger.info(
"Error sending request to %s %s: %s %s",
method,
redact_uri(uri),
type(e).__name__,
e.args[0],
)
set_tag(tags.ERROR, True)
set_tag("error_reason", e.args[0])
raise
async def post_urlencoded_get_json(
self,
uri: str,
args: Optional[Mapping[str, Union[str, List[str]]]] = None,
headers: Optional[RawHeaders] = None,
) -> Any:
"""
Args:
uri: uri to query
args: parameters to be url-encoded in the body
headers: a map from header name to a list of values for that header
Returns:
parsed json
Raises:
RequestTimedOutError: if there is a timeout before the response headers
are received. Note there is currently no timeout on reading the response
body.
HttpResponseException: On a non-2xx HTTP response.
ValueError: if the response was not JSON
"""
logger.debug("post_urlencoded_get_json args: %s", args)
query_bytes = encode_query_args(args)
actual_headers = {
b"Content-Type": [b"application/x-www-form-urlencoded"],
b"User-Agent": [self.user_agent],
b"Accept": [b"application/json"],
}
if headers:
actual_headers.update(headers)
response = await self.request(
"POST", uri, headers=Headers(actual_headers), data=query_bytes
)
body = await make_deferred_yieldable(readBody(response))
if 200 <= response.code < 300:
return json_decoder.decode(body.decode("utf-8"))
else:
raise HttpResponseException(
response.code, response.phrase.decode("ascii", errors="replace"), body
)
async def post_json_get_json(
self, uri: str, post_json: Any, headers: Optional[RawHeaders] = None
) -> Any:
"""
Args:
uri: URI to query.
post_json: request body, to be encoded as json
headers: a map from header name to a list of values for that header
Returns:
parsed json
Raises:
RequestTimedOutError: if there is a timeout before the response headers
are received. Note there is currently no timeout on reading the response
body.
HttpResponseException: On a non-2xx HTTP response.
ValueError: if the response was not JSON
"""
json_str = encode_canonical_json(post_json)
logger.debug("HTTP POST %s -> %s", json_str, uri)
actual_headers = {
b"Content-Type": [b"application/json"],
b"User-Agent": [self.user_agent],
b"Accept": [b"application/json"],
}
if headers:
actual_headers.update(headers)
response = await self.request(
"POST", uri, headers=Headers(actual_headers), data=json_str
)
body = await make_deferred_yieldable(readBody(response))
if 200 <= response.code < 300:
return json_decoder.decode(body.decode("utf-8"))
else:
raise HttpResponseException(
response.code, response.phrase.decode("ascii", errors="replace"), body
)
async def get_json(
self,
uri: str,
args: Optional[QueryParams] = None,
headers: Optional[RawHeaders] = None,
) -> Any:
"""Gets some json from the given URI.
Args:
uri: The URI to request, not including query parameters
args: A dictionary used to create query string
headers: a map from header name to a list of values for that header
Returns:
Succeeds when we get a 2xx HTTP response, with the HTTP body as JSON.
Raises:
RequestTimedOutError: if there is a timeout before the response headers
are received. Note there is currently no timeout on reading the response
body.
HttpResponseException On a non-2xx HTTP response.
ValueError: if the response was not JSON
"""
actual_headers = {b"Accept": [b"application/json"]}
if headers:
actual_headers.update(headers)
body = await self.get_raw(uri, args, headers=headers)
return json_decoder.decode(body.decode("utf-8"))
async def put_json(
self,
uri: str,
json_body: Any,
args: Optional[QueryParams] = None,
headers: RawHeaders = None,
) -> Any:
"""Puts some json to the given URI.
Args:
uri: The URI to request, not including query parameters
json_body: The JSON to put in the HTTP body,
args: A dictionary used to create query strings
headers: a map from header name to a list of values for that header
Returns:
Succeeds when we get a 2xx HTTP response, with the HTTP body as JSON.
Raises:
RequestTimedOutError: if there is a timeout before the response headers
are received. Note there is currently no timeout on reading the response
body.
HttpResponseException On a non-2xx HTTP response.
ValueError: if the response was not JSON
"""
if args:
query_str = urllib.parse.urlencode(args, True)
uri = "%s?%s" % (uri, query_str)
json_str = encode_canonical_json(json_body)
actual_headers = {
b"Content-Type": [b"application/json"],
b"User-Agent": [self.user_agent],
b"Accept": [b"application/json"],
}
if headers:
actual_headers.update(headers)
response = await self.request(
"PUT", uri, headers=Headers(actual_headers), data=json_str
)
body = await make_deferred_yieldable(readBody(response))
if 200 <= response.code < 300:
return json_decoder.decode(body.decode("utf-8"))
else:
raise HttpResponseException(
response.code, response.phrase.decode("ascii", errors="replace"), body
)
async def get_raw(
self,
uri: str,
args: Optional[QueryParams] = None,
headers: Optional[RawHeaders] = None,
) -> bytes:
"""Gets raw text from the given URI.
Args:
uri: The URI to request, not including query parameters
args: A dictionary used to create query strings
headers: a map from header name to a list of values for that header
Returns:
Succeeds when we get a 2xx HTTP response, with the
HTTP body as bytes.
Raises:
RequestTimedOutError: if there is a timeout before the response headers
are received. Note there is currently no timeout on reading the response
body.
HttpResponseException on a non-2xx HTTP response.
"""
if args:
query_str = urllib.parse.urlencode(args, True)
uri = "%s?%s" % (uri, query_str)
actual_headers = {b"User-Agent": [self.user_agent]}
if headers:
actual_headers.update(headers)
response = await self.request("GET", uri, headers=Headers(actual_headers))
body = await make_deferred_yieldable(readBody(response))
if 200 <= response.code < 300:
return body
else:
raise HttpResponseException(
response.code, response.phrase.decode("ascii", errors="replace"), body
)
async def get_file(
self,
url: str,
output_stream: BinaryIO,
max_size: Optional[int] = None,
headers: Optional[RawHeaders] = None,
) -> Tuple[int, Dict[bytes, List[bytes]], str, int]:
"""GETs a file from a given URL
Args:
url: The URL to GET
output_stream: File to write the response body to.
headers: A map from header name to a list of values for that header
Returns:
A tuple of the file length, dict of the response
headers, absolute URI of the response and HTTP response code.
Raises:
RequestTimedOutError: if there is a timeout before the response headers
are received. Note there is currently no timeout on reading the response
body.
SynapseError: if the response is not a 2xx, the remote file is too large, or
another exception happens during the download.
"""
actual_headers = {b"User-Agent": [self.user_agent]}
if headers:
actual_headers.update(headers)
response = await self.request("GET", url, headers=Headers(actual_headers))
resp_headers = dict(response.headers.getAllRawHeaders())
if (
b"Content-Length" in resp_headers
and max_size
and int(resp_headers[b"Content-Length"][0]) > max_size
):
logger.warning("Requested URL is too large > %r bytes" % (max_size,))
raise SynapseError(
502,
"Requested file is too large > %r bytes" % (max_size,),
Codes.TOO_LARGE,
)
if response.code > 299:
logger.warning("Got %d when downloading %s" % (response.code, url))
raise SynapseError(502, "Got error %d" % (response.code,), Codes.UNKNOWN)
try:
length = await make_deferred_yieldable(
read_body_with_max_size(response, output_stream, max_size)
)
except BodyExceededMaxSize:
SynapseError(
502,
"Requested file is too large > %r bytes" % (max_size,),
Codes.TOO_LARGE,
)
except Exception as e:
raise SynapseError(502, ("Failed to download remote body: %s" % e)) from e
return (
length,
resp_headers,
response.request.absoluteURI.decode("ascii"),
response.code,
)
synapse/http/client.py — function:SimpleHttpClient.get_file (lines 668-739)
async def get_file(
self,
url: str,
output_stream: BinaryIO,
max_size: Optional[int] = None,
headers: Optional[RawHeaders] = None,
) -> Tuple[int, Dict[bytes, List[bytes]], str, int]:
"""GETs a file from a given URL
Args:
url: The URL to GET
output_stream: File to write the response body to.
headers: A map from header name to a list of values for that header
Returns:
A tuple of the file length, dict of the response
headers, absolute URI of the response and HTTP response code.
Raises:
RequestTimedOutError: if there is a timeout before the response headers
are received. Note there is currently no timeout on reading the response
body.
SynapseError: if the response is not a 2xx, the remote file is too large, or
another exception happens during the download.
"""
actual_headers = {b"User-Agent": [self.user_agent]}
if headers:
actual_headers.update(headers)
response = await self.request("GET", url, headers=Headers(actual_headers))
resp_headers = dict(response.headers.getAllRawHeaders())
if (
b"Content-Length" in resp_headers
and max_size
and int(resp_headers[b"Content-Length"][0]) > max_size
):
logger.warning("Requested URL is too large > %r bytes" % (max_size,))
raise SynapseError(
502,
"Requested file is too large > %r bytes" % (max_size,),
Codes.TOO_LARGE,
)
if response.code > 299:
logger.warning("Got %d when downloading %s" % (response.code, url))
raise SynapseError(502, "Got error %d" % (response.code,), Codes.UNKNOWN)
try:
length = await make_deferred_yieldable(
read_body_with_max_size(response, output_stream, max_size)
)
except BodyExceededMaxSize:
SynapseError(
502,
"Requested file is too large > %r bytes" % (max_size,),
Codes.TOO_LARGE,
)
except Exception as e:
raise SynapseError(502, ("Failed to download remote body: %s" % e)) from e
return (
length,
resp_headers,
response.request.absoluteURI.decode("ascii"),
response.code,
)
synapse/http/client.py — class:BodyExceededMaxSize (lines 754-755)
class BodyExceededMaxSize(Exception):
"""The maximum allowed size of the HTTP body was exceeded."""
synapse/http/client.py — class:_ReadBodyWithMaxSizeProtocol (lines 758-783)
class _ReadBodyWithMaxSizeProtocol(protocol.Protocol):
def __init__(
self, stream: BinaryIO, deferred: defer.Deferred, max_size: Optional[int]
):
self.stream = stream
self.deferred = deferred
self.length = 0
self.max_size = max_size
def dataReceived(self, data: bytes) -> None:
self.stream.write(data)
self.length += len(data)
if self.max_size is not None and self.length >= self.max_size:
self.deferred.errback(BodyExceededMaxSize())
self.deferred = defer.Deferred()
self.transport.loseConnection()
def connectionLost(self, reason: Failure) -> None:
if reason.check(ResponseDone):
self.deferred.callback(self.length)
elif reason.check(PotentialDataLoss):
self.deferred.callback(self.length)
else:
self.deferred.errback(reason)
synapse/http/client.py — function:_ReadBodyWithMaxSizeProtocol.dataReceived (lines 767-773)
def dataReceived(self, data: bytes) -> None:
self.stream.write(data)
self.length += len(data)
if self.max_size is not None and self.length >= self.max_size:
self.deferred.errback(BodyExceededMaxSize())
self.deferred = defer.Deferred()
self.transport.loseConnection()
synapse/http/client.py — function:read_body_with_max_size (lines 786-806)
def read_body_with_max_size(
response: IResponse, stream: BinaryIO, max_size: Optional[int]
) -> defer.Deferred:
"""
Read a HTTP response body to a file-object. Optionally enforcing a maximum file size.
If the maximum file size is reached, the returned Deferred will resolve to a
Failure with a BodyExceededMaxSize exception.
Args:
response: The HTTP response to read from.
stream: The file-object to write to.
max_size: The maximum file size to allow.
Returns:
A Deferred which resolves to the length of the read body.
"""
d = defer.Deferred()
response.deliverBody(_ReadBodyWithMaxSizeProtocol(stream, d, max_size))
return d
synapse/http/federation/well_known_resolver.py — class:WellKnownResolver (lines 83-291)
class WellKnownResolver:
"""Handles well-known lookups for matrix servers.
"""
def __init__(
self,
reactor: IReactorTime,
agent: IAgent,
user_agent: bytes,
well_known_cache: Optional[TTLCache] = None,
had_well_known_cache: Optional[TTLCache] = None,
):
self._reactor = reactor
self._clock = Clock(reactor)
if well_known_cache is None:
well_known_cache = _well_known_cache
if had_well_known_cache is None:
had_well_known_cache = _had_valid_well_known_cache
self._well_known_cache = well_known_cache
self._had_valid_well_known_cache = had_well_known_cache
self._well_known_agent = RedirectAgent(agent)
self.user_agent = user_agent
async def get_well_known(self, server_name: bytes) -> WellKnownLookupResult:
"""Attempt to fetch and parse a .well-known file for the given server
Args:
server_name: name of the server, from the requested url
Returns:
The result of the lookup
"""
try:
prev_result, expiry, ttl = self._well_known_cache.get_with_expiry(
server_name
)
now = self._clock.time()
if now < expiry - WELL_KNOWN_GRACE_PERIOD_FACTOR * ttl:
return WellKnownLookupResult(delegated_server=prev_result)
except KeyError:
prev_result = None
try:
with Measure(self._clock, "get_well_known"):
result, cache_period = await self._fetch_well_known(
server_name
)
except _FetchWellKnownFailure as e:
if prev_result and e.temporary:
return WellKnownLookupResult(delegated_server=prev_result)
result = None
if self._had_valid_well_known_cache.get(server_name, False):
cache_period = WELL_KNOWN_DOWN_CACHE_PERIOD
else:
cache_period = WELL_KNOWN_INVALID_CACHE_PERIOD
cache_period *= random.uniform(
1 - WELL_KNOWN_DEFAULT_CACHE_PERIOD_JITTER,
1 + WELL_KNOWN_DEFAULT_CACHE_PERIOD_JITTER,
)
if cache_period > 0:
self._well_known_cache.set(server_name, result, cache_period)
return WellKnownLookupResult(delegated_server=result)
async def _fetch_well_known(self, server_name: bytes) -> Tuple[bytes, float]:
"""Actually fetch and parse a .well-known, without checking the cache
Args:
server_name: name of the server, from the requested url
Raises:
_FetchWellKnownFailure if we fail to lookup a result
Returns:
The lookup result and cache period.
"""
had_valid_well_known = self._had_valid_well_known_cache.get(server_name, False)
response, body = await self._make_well_known_request(
server_name, retry=had_valid_well_known
)
try:
if response.code != 200:
raise Exception("Non-200 response %s" % (response.code,))
parsed_body = json_decoder.decode(body.decode("utf-8"))
logger.info("Response from .well-known: %s", parsed_body)
result = parsed_body["m.server"].encode("ascii")
except defer.CancelledError:
raise
except Exception as e:
logger.info("Error parsing well-known for %s: %s", server_name, e)
raise _FetchWellKnownFailure(temporary=False)
cache_period = _cache_period_from_headers(
response.headers, time_now=self._reactor.seconds
)
if cache_period is None:
cache_period = WELL_KNOWN_DEFAULT_CACHE_PERIOD
cache_period *= random.uniform(
1 - WELL_KNOWN_DEFAULT_CACHE_PERIOD_JITTER,
1 + WELL_KNOWN_DEFAULT_CACHE_PERIOD_JITTER,
)
else:
cache_period = min(cache_period, WELL_KNOWN_MAX_CACHE_PERIOD)
cache_period = max(cache_period, WELL_KNOWN_MIN_CACHE_PERIOD)
self._had_valid_well_known_cache.set(
server_name,
bool(result),
cache_period + WELL_KNOWN_REMEMBER_DOMAIN_HAD_VALID,
)
return result, cache_period
async def _make_well_known_request(
self, server_name: bytes, retry: bool
) -> Tuple[IResponse, bytes]:
"""Make the well known request.
This will retry the request if requested and it fails (with unable
to connect or receives a 5xx error).
Args:
server_name: name of the server, from the requested url
retry: Whether to retry the request if it fails.
Raises:
_FetchWellKnownFailure if we fail to lookup a result
Returns:
Returns the response object and body. Response may be a non-200 response.
"""
uri = b"https://%s/.well-known/matrix/server" % (server_name,)
uri_str = uri.decode("ascii")
headers = {
b"User-Agent": [self.user_agent],
}
i = 0
while True:
i += 1
logger.info("Fetching %s", uri_str)
try:
response = await make_deferred_yieldable(
self._well_known_agent.request(
b"GET", uri, headers=Headers(headers)
)
)
body_stream = BytesIO()
await make_deferred_yieldable(
read_body_with_max_size(response, body_stream, WELL_KNOWN_MAX_SIZE)
)
body = body_stream.getvalue()
if 500 <= response.code < 600:
raise Exception("Non-200 response %s" % (response.code,))
return response, body
except defer.CancelledError:
raise
except BodyExceededMaxSize:
logger.warning(
"Requested .well-known file for %s is too large > %r bytes",
server_name.decode("ascii"),
WELL_KNOWN_MAX_SIZE,
)
raise _FetchWellKnownFailure(temporary=True)
except Exception as e:
if not retry or i >= WELL_KNOWN_RETRY_ATTEMPTS:
logger.info("Error fetching %s: %s", uri_str, e)
raise _FetchWellKnownFailure(temporary=True)
logger.info("Error fetching %s: %s. Retrying", uri_str, e)
await self._clock.sleep(0.5)
synapse/http/federation/well_known_resolver.py — function:WellKnownResolver._make_well_known_request (lines 225-291)
async def _make_well_known_request(
self, server_name: bytes, retry: bool
) -> Tuple[IResponse, bytes]:
"""Make the well known request.
This will retry the request if requested and it fails (with unable
to connect or receives a 5xx error).
Args:
server_name: name of the server, from the requested url
retry: Whether to retry the request if it fails.
Raises:
_FetchWellKnownFailure if we fail to lookup a result
Returns:
Returns the response object and body. Response may be a non-200 response.
"""
uri = b"https://%s/.well-known/matrix/server" % (server_name,)
uri_str = uri.decode("ascii")
headers = {
b"User-Agent": [self.user_agent],
}
i = 0
while True:
i += 1
logger.info("Fetching %s", uri_str)
try:
response = await make_deferred_yieldable(
self._well_known_agent.request(
b"GET", uri, headers=Headers(headers)
)
)
body_stream = BytesIO()
await make_deferred_yieldable(
read_body_with_max_size(response, body_stream, WELL_KNOWN_MAX_SIZE)
)
body = body_stream.getvalue()
if 500 <= response.code < 600:
raise Exception("Non-200 response %s" % (response.code,))
return response, body
except defer.CancelledError:
raise
except BodyExceededMaxSize:
logger.warning(
"Requested .well-known file for %s is too large > %r bytes",
server_name.decode("ascii"),
WELL_KNOWN_MAX_SIZE,
)
raise _FetchWellKnownFailure(temporary=True)
except Exception as e:
if not retry or i >= WELL_KNOWN_RETRY_ATTEMPTS:
logger.info("Error fetching %s: %s", uri_str, e)
raise _FetchWellKnownFailure(temporary=True)
logger.info("Error fetching %s: %s. Retrying", uri_str, e)
await self._clock.sleep(0.5)
synapse/http/federation/well_known_resolver.py — module:<module>@18 (lines 18-18)
from io import BytesIO
synapse/http/federation/well_known_resolver.py — module:<module>@25 (lines 25-25)
from twisted.web.client import RedirectAgent
synapse/http/federation/well_known_resolver.py — module:<module>@30 (lines 30-30)
from synapse.http.client import BodyExceededMaxSize, read_body_with_max_size
synapse/http/federation/well_known_resolver.py — module:<module>@59 (lines 59-59)
WELL_KNOWN_MAX_SIZE = 50 * 1024
synapse/http/matrixfederationclient.py — class:MatrixFederationHttpClient (lines 212-1008)
class MatrixFederationHttpClient:
"""HTTP client used to talk to other homeservers over the federation
protocol. Send client certificates and signs requests.
Attributes:
agent (twisted.web.client.Agent): The twisted Agent used to send the
requests.
"""
def __init__(self, hs, tls_client_options_factory):
self.hs = hs
self.signing_key = hs.signing_key
self.server_name = hs.hostname
self.reactor = BlacklistingReactorWrapper(
hs.get_reactor(), None, hs.config.federation_ip_range_blacklist
)
user_agent = hs.version_string
if hs.config.user_agent_suffix:
user_agent = "%s %s" % (user_agent, hs.config.user_agent_suffix)
user_agent = user_agent.encode("ascii")
self.agent = MatrixFederationAgent(
self.reactor,
tls_client_options_factory,
user_agent,
hs.config.federation_ip_range_blacklist,
)
self.agent = BlacklistingAgentWrapper(
self.agent, ip_blacklist=hs.config.federation_ip_range_blacklist,
)
self.clock = hs.get_clock()
self._store = hs.get_datastore()
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)
async def _send_request_with_optional_trailing_slash(
self,
request: MatrixFederationRequest,
try_trailing_slash_on_400: bool = False,
**send_request_args
) -> IResponse:
"""Wrapper for _send_request which can optionally retry the request
upon receiving a combination of a 400 HTTP response code and a
'M_UNRECOGNIZED' errcode. This is a workaround for Synapse <= v0.99.3
due to #3622.
Args:
request: details of request to be sent
try_trailing_slash_on_400: Whether on receiving a 400
'M_UNRECOGNIZED' from the server to retry the request with a
trailing slash appended to the request path.
send_request_args: A dictionary of arguments to pass to `_send_request()`.
Raises:
HttpResponseException: If we get an HTTP response code >= 300
(except 429).
Returns:
Parsed JSON response body.
"""
try:
response = await self._send_request(request, **send_request_args)
except HttpResponseException as e:
if not try_trailing_slash_on_400:
raise
if e.code != 400 or e.to_synapse_error().errcode != "M_UNRECOGNIZED":
raise
logger.info("Retrying request with trailing slash")
request = attr.evolve(request, path=request.path + "/")
response = await self._send_request(request, **send_request_args)
return response
async def _send_request(
self,
request: MatrixFederationRequest,
retry_on_dns_fail: bool = True,
timeout: Optional[int] = None,
long_retries: bool = False,
ignore_backoff: bool = False,
backoff_on_404: bool = False,
) -> IResponse:
"""
Sends a request to the given server.
Args:
request: details of request to be sent
retry_on_dns_fail: true if the request should be retied on DNS failures
timeout: number of milliseconds to wait for the response headers
(including connecting to the server), *for each attempt*.
60s by default.
long_retries: whether to use the long retry algorithm.
The regular retry algorithm makes 4 attempts, with intervals
[0.5s, 1s, 2s].
The long retry algorithm makes 11 attempts, with intervals
[4s, 16s, 60s, 60s, ...]
Both algorithms add -20%/+40% jitter to the retry intervals.
Note that the above intervals are *in addition* to the time spent
waiting for the request to complete (up to `timeout` ms).
NB: the long retry algorithm takes over 20 minutes to complete, with
a default timeout of 60s!
ignore_backoff: true to ignore the historical backoff data
and try the request anyway.
backoff_on_404: Back off if we get a 404
Returns:
Resolves with the HTTP response object on success.
Raises:
HttpResponseException: If we get an HTTP response code >= 300
(except 429).
NotRetryingDestination: If we are not yet ready to retry this
server.
FederationDeniedError: If this destination is not on our
federation whitelist
RequestSendFailed: If there were problems connecting to the
remote, due to e.g. DNS failures, connection timeouts etc.
"""
if timeout:
_sec_timeout = timeout / 1000
else:
_sec_timeout = self.default_timeout
if (
self.hs.config.federation_domain_whitelist is not None
and request.destination not in self.hs.config.federation_domain_whitelist
):
raise FederationDeniedError(request.destination)
limiter = await synapse.util.retryutils.get_retry_limiter(
request.destination,
self.clock,
self._store,
backoff_on_404=backoff_on_404,
ignore_backoff=ignore_backoff,
)
method_bytes = request.method.encode("ascii")
destination_bytes = request.destination.encode("ascii")
path_bytes = request.path.encode("ascii")
if request.query:
query_bytes = encode_query_args(request.query)
else:
query_bytes = b""
scope = start_active_span(
"outgoing-federation-request",
tags={
tags.SPAN_KIND: tags.SPAN_KIND_RPC_CLIENT,
tags.PEER_ADDRESS: request.destination,
tags.HTTP_METHOD: request.method,
tags.HTTP_URL: request.path,
},
finish_on_close=True,
)
headers_dict = {}
inject_active_span_byte_dict(headers_dict, request.destination)
headers_dict[b"User-Agent"] = [self.version_string_bytes]
with limiter, scope:
if long_retries:
retries_left = MAX_LONG_RETRIES
else:
retries_left = MAX_SHORT_RETRIES
url_bytes = request.uri
url_str = url_bytes.decode("ascii")
url_to_sign_bytes = urllib.parse.urlunparse(
(b"", b"", path_bytes, None, query_bytes, b"")
)
while True:
try:
json = request.get_json()
if json:
headers_dict[b"Content-Type"] = [b"application/json"]
auth_headers = self.build_auth_headers(
destination_bytes, method_bytes, url_to_sign_bytes, json
)
data = encode_canonical_json(json)
producer = QuieterFileBodyProducer(
BytesIO(data), cooperator=self._cooperator
)
else:
producer = None
auth_headers = self.build_auth_headers(
destination_bytes, method_bytes, url_to_sign_bytes
)
headers_dict[b"Authorization"] = auth_headers
logger.debug(
"{%s} [%s] Sending request: %s %s; timeout %fs",
request.txn_id,
request.destination,
request.method,
url_str,
_sec_timeout,
)
outgoing_requests_counter.labels(request.method).inc()
try:
with Measure(self.clock, "outbound_request"):
request_deferred = self.agent.request(
method_bytes,
url_bytes,
headers=Headers(headers_dict),
bodyProducer=producer,
)
request_deferred = timeout_deferred(
request_deferred,
timeout=_sec_timeout,
reactor=self.reactor,
)
response = await request_deferred
except DNSLookupError as e:
raise RequestSendFailed(e, can_retry=retry_on_dns_fail) from e
except Exception as e:
raise RequestSendFailed(e, can_retry=True) from e
incoming_responses_counter.labels(
request.method, response.code
).inc()
set_tag(tags.HTTP_STATUS_CODE, response.code)
response_phrase = response.phrase.decode("ascii", errors="replace")
if 200 <= response.code < 300:
logger.debug(
"{%s} [%s] Got response headers: %d %s",
request.txn_id,
request.destination,
response.code,
response_phrase,
)
pass
else:
logger.info(
"{%s} [%s] Got response headers: %d %s",
request.txn_id,
request.destination,
response.code,
response_phrase,
)
d = treq.content(response)
d = timeout_deferred(
d, timeout=_sec_timeout, reactor=self.reactor
)
try:
body = await make_deferred_yieldable(d)
except Exception as e:
logger.warning(
"{%s} [%s] Failed to get error response: %s %s: %s",
request.txn_id,
request.destination,
request.method,
url_str,
_flatten_response_never_received(e),
)
body = None
exc = HttpResponseException(
response.code, response_phrase, body
)
if response.code == 429:
raise RequestSendFailed(exc, can_retry=True) from exc
else:
raise exc
break
except RequestSendFailed as e:
logger.info(
"{%s} [%s] Request failed: %s %s: %s",
request.txn_id,
request.destination,
request.method,
url_str,
_flatten_response_never_received(e.inner_exception),
)
if not e.can_retry:
raise
if retries_left and not timeout:
if long_retries:
delay = 4 ** (MAX_LONG_RETRIES + 1 - retries_left)
delay = min(delay, 60)
delay *= random.uniform(0.8, 1.4)
else:
delay = 0.5 * 2 ** (MAX_SHORT_RETRIES - retries_left)
delay = min(delay, 2)
delay *= random.uniform(0.8, 1.4)
logger.debug(
"{%s} [%s] Waiting %ss before re-sending...",
request.txn_id,
request.destination,
delay,
)
await self.clock.sleep(delay)
retries_left -= 1
else:
raise
except Exception as e:
logger.warning(
"{%s} [%s] Request failed: %s %s: %s",
request.txn_id,
request.destination,
request.method,
url_str,
_flatten_response_never_received(e),
)
raise
return response
def build_auth_headers(
self,
destination: Optional[bytes],
method: bytes,
url_bytes: bytes,
content: Optional[JsonDict] = None,
destination_is: Optional[bytes] = None,
) -> List[bytes]:
"""
Builds the Authorization headers for a federation request
Args:
destination: The destination homeserver of the request.
May be None if the destination is an identity server, in which case
destination_is must be non-None.
method: The HTTP method of the request
url_bytes: The URI path of the request
content: The body of the request
destination_is: As 'destination', but if the destination is an
identity server
Returns:
A list of headers to be added as "Authorization:" headers
"""
request = {
"method": method.decode("ascii"),
"uri": url_bytes.decode("ascii"),
"origin": self.server_name,
}
if destination is not None:
request["destination"] = destination.decode("ascii")
if destination_is is not None:
request["destination_is"] = destination_is.decode("ascii")
if content is not None:
request["content"] = content
request = sign_json(request, self.server_name, self.signing_key)
auth_headers = []
for key, sig in request["signatures"][self.server_name].items():
auth_headers.append(
(
'X-Matrix origin=%s,key="%s",sig="%s"'
% (self.server_name, key, sig)
).encode("ascii")
)
return auth_headers
async def put_json(
self,
destination: str,
path: str,
args: Optional[QueryArgs] = None,
data: Optional[JsonDict] = None,
json_data_callback: Optional[Callable[[], JsonDict]] = None,
long_retries: bool = False,
timeout: Optional[int] = None,
ignore_backoff: bool = False,
backoff_on_404: bool = False,
try_trailing_slash_on_400: bool = False,
) -> Union[JsonDict, list]:
""" Sends the specified json data using PUT
Args:
destination: The remote server to send the HTTP request to.
path: The HTTP path.
args: query params
data: A dict containing the data that will be used as
the request body. This will be encoded as JSON.
json_data_callback: A callable returning the dict to
use as the request body.
long_retries: whether to use the long retry algorithm. See
docs on _send_request for details.
timeout: number of milliseconds to wait for the response.
self._default_timeout (60s) by default.
Note that we may make several attempts to send the request; this
timeout applies to the time spent waiting for response headers for
*each* attempt (including connection time) as well as the time spent
reading the response body after a 200 response.
ignore_backoff: true to ignore the historical backoff data
and try the request anyway.
backoff_on_404: True if we should count a 404 response as
a failure of the server (and should therefore back off future
requests).
try_trailing_slash_on_400: True if on a 400 M_UNRECOGNIZED
response we should try appending a trailing slash to the end
of the request. Workaround for #3622 in Synapse <= v0.99.3. This
will be attempted before backing off if backing off has been
enabled.
Returns:
Succeeds when we get a 2xx HTTP response. The
result will be the decoded JSON body.
Raises:
HttpResponseException: If we get an HTTP response code >= 300
(except 429).
NotRetryingDestination: If we are not yet ready to retry this
server.
FederationDeniedError: If this destination is not on our
federation whitelist
RequestSendFailed: If there were problems connecting to the
remote, due to e.g. DNS failures, connection timeouts etc.
"""
request = MatrixFederationRequest(
method="PUT",
destination=destination,
path=path,
query=args,
json_callback=json_data_callback,
json=data,
)
start_ms = self.clock.time_msec()
response = await self._send_request_with_optional_trailing_slash(
request,
try_trailing_slash_on_400,
backoff_on_404=backoff_on_404,
ignore_backoff=ignore_backoff,
long_retries=long_retries,
timeout=timeout,
)
if timeout is not None:
_sec_timeout = timeout / 1000
else:
_sec_timeout = self.default_timeout
body = await _handle_json_response(
self.reactor, _sec_timeout, request, response, start_ms
)
return body
async def post_json(
self,
destination: str,
path: str,
data: Optional[JsonDict] = None,
long_retries: bool = False,
timeout: Optional[int] = None,
ignore_backoff: bool = False,
args: Optional[QueryArgs] = None,
) -> Union[JsonDict, list]:
""" Sends the specified json data using POST
Args:
destination: The remote server to send the HTTP request to.
path: The HTTP path.
data: A dict containing the data that will be used as
the request body. This will be encoded as JSON.
long_retries: whether to use the long retry algorithm. See
docs on _send_request for details.
timeout: number of milliseconds to wait for the response.
self._default_timeout (60s) by default.
Note that we may make several attempts to send the request; this
timeout applies to the time spent waiting for response headers for
*each* attempt (including connection time) as well as the time spent
reading the response body after a 200 response.
ignore_backoff: true to ignore the historical backoff data and
try the request anyway.
args: query params
Returns:
dict|list: Succeeds when we get a 2xx HTTP response. The
result will be the decoded JSON body.
Raises:
HttpResponseException: If we get an HTTP response code >= 300
(except 429).
NotRetryingDestination: If we are not yet ready to retry this
server.
FederationDeniedError: If this destination is not on our
federation whitelist
RequestSendFailed: If there were problems connecting to the
remote, due to e.g. DNS failures, connection timeouts etc.
"""
request = MatrixFederationRequest(
method="POST", destination=destination, path=path, query=args, json=data
)
start_ms = self.clock.time_msec()
response = await self._send_request(
request,
long_retries=long_retries,
timeout=timeout,
ignore_backoff=ignore_backoff,
)
if timeout:
_sec_timeout = timeout / 1000
else:
_sec_timeout = self.default_timeout
body = await _handle_json_response(
self.reactor, _sec_timeout, request, response, start_ms,
)
return body
async def get_json(
self,
destination: str,
path: str,
args: Optional[QueryArgs] = None,
retry_on_dns_fail: bool = True,
timeout: Optional[int] = None,
ignore_backoff: bool = False,
try_trailing_slash_on_400: bool = False,
) -> Union[JsonDict, list]:
""" GETs some json from the given host homeserver and path
Args:
destination: The remote server to send the HTTP request to.
path: The HTTP path.
args: A dictionary used to create query strings, defaults to
None.
timeout: number of milliseconds to wait for the response.
self._default_timeout (60s) by default.
Note that we may make several attempts to send the request; this
timeout applies to the time spent waiting for response headers for
*each* attempt (including connection time) as well as the time spent
reading the response body after a 200 response.
ignore_backoff: true to ignore the historical backoff data
and try the request anyway.
try_trailing_slash_on_400: True if on a 400 M_UNRECOGNIZED
response we should try appending a trailing slash to the end of
the request. Workaround for #3622 in Synapse <= v0.99.3.
Returns:
Succeeds when we get a 2xx HTTP response. The
result will be the decoded JSON body.
Raises:
HttpResponseException: If we get an HTTP response code >= 300
(except 429).
NotRetryingDestination: If we are not yet ready to retry this
server.
FederationDeniedError: If this destination is not on our
federation whitelist
RequestSendFailed: If there were problems connecting to the
remote, due to e.g. DNS failures, connection timeouts etc.
"""
request = MatrixFederationRequest(
method="GET", destination=destination, path=path, query=args
)
start_ms = self.clock.time_msec()
response = await self._send_request_with_optional_trailing_slash(
request,
try_trailing_slash_on_400,
backoff_on_404=False,
ignore_backoff=ignore_backoff,
retry_on_dns_fail=retry_on_dns_fail,
timeout=timeout,
)
if timeout is not None:
_sec_timeout = timeout / 1000
else:
_sec_timeout = self.default_timeout
body = await _handle_json_response(
self.reactor, _sec_timeout, request, response, start_ms
)
return body
async def delete_json(
self,
destination: str,
path: str,
long_retries: bool = False,
timeout: Optional[int] = None,
ignore_backoff: bool = False,
args: Optional[QueryArgs] = None,
) -> Union[JsonDict, list]:
"""Send a DELETE request to the remote expecting some json response
Args:
destination: The remote server to send the HTTP request to.
path: The HTTP path.
long_retries: whether to use the long retry algorithm. See
docs on _send_request for details.
timeout: number of milliseconds to wait for the response.
self._default_timeout (60s) by default.
Note that we may make several attempts to send the request; this
timeout applies to the time spent waiting for response headers for
*each* attempt (including connection time) as well as the time spent
reading the response body after a 200 response.
ignore_backoff: true to ignore the historical backoff data and
try the request anyway.
args: query params
Returns:
Succeeds when we get a 2xx HTTP response. The
result will be the decoded JSON body.
Raises:
HttpResponseException: If we get an HTTP response code >= 300
(except 429).
NotRetryingDestination: If we are not yet ready to retry this
server.
FederationDeniedError: If this destination is not on our
federation whitelist
RequestSendFailed: If there were problems connecting to the
remote, due to e.g. DNS failures, connection timeouts etc.
"""
request = MatrixFederationRequest(
method="DELETE", destination=destination, path=path, query=args
)
start_ms = self.clock.time_msec()
response = await self._send_request(
request,
long_retries=long_retries,
timeout=timeout,
ignore_backoff=ignore_backoff,
)
if timeout is not None:
_sec_timeout = timeout / 1000
else:
_sec_timeout = self.default_timeout
body = await _handle_json_response(
self.reactor, _sec_timeout, request, response, start_ms
)
return body
async def get_file(
self,
destination: str,
path: str,
output_stream,
args: Optional[QueryArgs] = None,
retry_on_dns_fail: bool = True,
max_size: Optional[int] = None,
ignore_backoff: bool = False,
) -> Tuple[int, Dict[bytes, List[bytes]]]:
"""GETs a file from a given homeserver
Args:
destination: The remote server to send the HTTP request to.
path: The HTTP path to GET.
output_stream: File to write the response body to.
args: Optional dictionary used to create the query string.
ignore_backoff: true to ignore the historical backoff data
and try the request anyway.
Returns:
Resolves with an (int,dict) tuple of
the file length and a dict of the response headers.
Raises:
HttpResponseException: If we get an HTTP response code >= 300
(except 429).
NotRetryingDestination: If we are not yet ready to retry this
server.
FederationDeniedError: If this destination is not on our
federation whitelist
RequestSendFailed: If there were problems connecting to the
remote, due to e.g. DNS failures, connection timeouts etc.
"""
request = MatrixFederationRequest(
method="GET", destination=destination, path=path, query=args
)
response = await self._send_request(
request, retry_on_dns_fail=retry_on_dns_fail, ignore_backoff=ignore_backoff
)
headers = dict(response.headers.getAllRawHeaders())
try:
d = read_body_with_max_size(response, output_stream, max_size)
d.addTimeout(self.default_timeout, self.reactor)
length = await make_deferred_yieldable(d)
except BodyExceededMaxSize:
msg = "Requested file is too large > %r bytes" % (max_size,)
logger.warning(
"{%s} [%s] %s", request.txn_id, request.destination, msg,
)
SynapseError(502, msg, Codes.TOO_LARGE)
except Exception as e:
logger.warning(
"{%s} [%s] Error reading response: %s",
request.txn_id,
request.destination,
e,
)
raise
logger.info(
"{%s} [%s] Completed: %d %s [%d bytes] %s %s",
request.txn_id,
request.destination,
response.code,
response.phrase.decode("ascii", errors="replace"),
length,
request.method,
request.uri.decode("ascii"),
)
return (length, headers)
synapse/http/matrixfederationclient.py — function:MatrixFederationHttpClient.get_file (lines 937-1008)
async def get_file(
self,
destination: str,
path: str,
output_stream,
args: Optional[QueryArgs] = None,
retry_on_dns_fail: bool = True,
max_size: Optional[int] = None,
ignore_backoff: bool = False,
) -> Tuple[int, Dict[bytes, List[bytes]]]:
"""GETs a file from a given homeserver
Args:
destination: The remote server to send the HTTP request to.
path: The HTTP path to GET.
output_stream: File to write the response body to.
args: Optional dictionary used to create the query string.
ignore_backoff: true to ignore the historical backoff data
and try the request anyway.
Returns:
Resolves with an (int,dict) tuple of
the file length and a dict of the response headers.
Raises:
HttpResponseException: If we get an HTTP response code >= 300
(except 429).
NotRetryingDestination: If we are not yet ready to retry this
server.
FederationDeniedError: If this destination is not on our
federation whitelist
RequestSendFailed: If there were problems connecting to the
remote, due to e.g. DNS failures, connection timeouts etc.
"""
request = MatrixFederationRequest(
method="GET", destination=destination, path=path, query=args
)
response = await self._send_request(
request, retry_on_dns_fail=retry_on_dns_fail, ignore_backoff=ignore_backoff
)
headers = dict(response.headers.getAllRawHeaders())
try:
d = read_body_with_max_size(response, output_stream, max_size)
d.addTimeout(self.default_timeout, self.reactor)
length = await make_deferred_yieldable(d)
except BodyExceededMaxSize:
msg = "Requested file is too large > %r bytes" % (max_size,)
logger.warning(
"{%s} [%s] %s", request.txn_id, request.destination, msg,
)
SynapseError(502, msg, Codes.TOO_LARGE)
except Exception as e:
logger.warning(
"{%s} [%s] Error reading response: %s",
request.txn_id,
request.destination,
e,
)
raise
logger.info(
"{%s} [%s] Completed: %d %s [%d bytes] %s %s",
request.txn_id,
request.destination,
response.code,
response.phrase.decode("ascii", errors="replace"),
length,
request.method,
request.uri.decode("ascii"),
)
return (length, headers)
synapse/http/matrixfederationclient.py — module:<module>@39 (lines 39-45)
from synapse.api.errors import (
Codes,
FederationDeniedError,
HttpResponseException,
RequestSendFailed,
SynapseError,
)
synapse/http/matrixfederationclient.py — module:<module>@47 (lines 47-53)
from synapse.http.client import (
BlacklistingAgentWrapper,
BlacklistingReactorWrapper,
BodyExceededMaxSize,
encode_query_args,
read_body_with_max_size,
)
tests/http/federation/test_matrix_federation_agent.py — class:MatrixFederationAgentTests (lines 80-1192)
class MatrixFederationAgentTests(unittest.TestCase):
def setUp(self):
self.reactor = ThreadedMemoryReactorClock()
self.mock_resolver = Mock()
config_dict = default_config("test", parse=False)
config_dict["federation_custom_ca_list"] = [get_test_ca_cert_file()]
self._config = config = HomeServerConfig()
config.parse_config_dict(config_dict, "", "")
self.tls_factory = FederationPolicyForHTTPS(config)
self.well_known_cache = TTLCache("test_cache", timer=self.reactor.seconds)
self.had_well_known_cache = TTLCache("test_cache", timer=self.reactor.seconds)
self.well_known_resolver = WellKnownResolver(
self.reactor,
Agent(self.reactor, contextFactory=self.tls_factory),
b"test-agent",
well_known_cache=self.well_known_cache,
had_well_known_cache=self.had_well_known_cache,
)
self.agent = MatrixFederationAgent(
reactor=self.reactor,
tls_client_options_factory=self.tls_factory,
user_agent="test-agent",
ip_blacklist=IPSet(),
_srv_resolver=self.mock_resolver,
_well_known_resolver=self.well_known_resolver,
)
def _make_connection(self, client_factory, expected_sni):
"""Builds a test server, and completes the outgoing client connection
Returns:
HTTPChannel: the test server
"""
server_tls_protocol = _build_test_server(get_connection_factory())
client_protocol = client_factory.buildProtocol(None)
client_protocol.makeConnection(
FakeTransport(server_tls_protocol, self.reactor, client_protocol)
)
server_tls_protocol.makeConnection(
FakeTransport(client_protocol, self.reactor, server_tls_protocol)
)
server_tls_connection = server_tls_protocol._tlsConnection
http_protocol = server_tls_protocol.wrappedProtocol
self.reactor.pump((0.1,))
server_name = server_tls_connection.get_servername()
self.assertEqual(
server_name,
expected_sni,
"Expected SNI %s but got %s" % (expected_sni, server_name),
)
return http_protocol
@defer.inlineCallbacks
def _make_get_request(self, uri):
"""
Sends a simple GET request via the agent, and checks its logcontext management
"""
with LoggingContext("one") as context:
fetch_d = self.agent.request(b"GET", uri)
self.assertNoResult(fetch_d)
_check_logcontext(SENTINEL_CONTEXT)
try:
fetch_res = yield fetch_d
return fetch_res
except Exception as e:
logger.info("Fetch of %s failed: %s", uri.decode("ascii"), e)
raise
finally:
_check_logcontext(context)
def _handle_well_known_connection(
self, client_factory, expected_sni, content, response_headers={}
):
"""Handle an outgoing HTTPs connection: wire it up to a server, check that the
request is for a .well-known, and send the response.
Args:
client_factory (IProtocolFactory): outgoing connection
expected_sni (bytes): SNI that we expect the outgoing connection to send
content (bytes): content to send back as the .well-known
Returns:
HTTPChannel: server impl
"""
well_known_server = self._make_connection(
client_factory, expected_sni=expected_sni
)
self.assertEqual(len(well_known_server.requests), 1)
request = well_known_server.requests[0]
self.assertEqual(
request.requestHeaders.getRawHeaders(b"user-agent"), [b"test-agent"]
)
self._send_well_known_response(request, content, headers=response_headers)
return well_known_server
def _send_well_known_response(self, request, content, headers={}):
"""Check that an incoming request looks like a valid .well-known request, and
send back the response.
"""
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/.well-known/matrix/server")
self.assertEqual(request.requestHeaders.getRawHeaders(b"host"), [b"testserv"])
for k, v in headers.items():
request.setHeader(k, v)
request.write(content)
request.finish()
self.reactor.pump((0.1,))
def test_get(self):
"""
happy-path test of a GET request with an explicit port
"""
self.reactor.lookups["testserv"] = "1.2.3.4"
test_d = self._make_get_request(b"matrix://testserv:8448/foo/bar")
self.assertNoResult(test_d)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 8448)
http_server = self._make_connection(client_factory, expected_sni=b"testserv")
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(
request.requestHeaders.getRawHeaders(b"host"), [b"testserv:8448"]
)
self.assertEqual(
request.requestHeaders.getRawHeaders(b"user-agent"), [b"test-agent"]
)
content = request.content.read()
self.assertEqual(content, b"")
self.assertNoResult(test_d)
request.responseHeaders.setRawHeaders(b"Content-Type", [b"application/json"])
request.write("")
self.reactor.pump((0.1,))
response = self.successResultOf(test_d)
self.assertEqual(response.code, 200)
request.write('{ "a": 1 }'.encode("ascii"))
request.finish()
self.reactor.pump((0.1,))
json = self.successResultOf(treq.json_content(response))
self.assertEqual(json, {"a": 1})
def test_get_ip_address(self):
"""
Test the behaviour when the server name contains an explicit IP (with no port)
"""
self.reactor.lookups["1.2.3.4"] = "1.2.3.4"
test_d = self._make_get_request(b"matrix://1.2.3.4/foo/bar")
self.assertNoResult(test_d)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 8448)
http_server = self._make_connection(client_factory, expected_sni=None)
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(request.requestHeaders.getRawHeaders(b"host"), [b"1.2.3.4"])
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
def test_get_ipv6_address(self):
"""
Test the behaviour when the server name contains an explicit IPv6 address
(with no port)
"""
self.reactor.lookups["::1"] = "::1"
test_d = self._make_get_request(b"matrix://[::1]/foo/bar")
self.assertNoResult(test_d)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "::1")
self.assertEqual(port, 8448)
http_server = self._make_connection(client_factory, expected_sni=None)
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(request.requestHeaders.getRawHeaders(b"host"), [b"[::1]"])
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
def test_get_ipv6_address_with_port(self):
"""
Test the behaviour when the server name contains an explicit IPv6 address
(with explicit port)
"""
self.reactor.lookups["::1"] = "::1"
test_d = self._make_get_request(b"matrix://[::1]:80/foo/bar")
self.assertNoResult(test_d)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "::1")
self.assertEqual(port, 80)
http_server = self._make_connection(client_factory, expected_sni=None)
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(request.requestHeaders.getRawHeaders(b"host"), [b"[::1]:80"])
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
def test_get_hostname_bad_cert(self):
"""
Test the behaviour when the certificate on the server doesn't match the hostname
"""
self.mock_resolver.resolve_service.side_effect = generate_resolve_service([])
self.reactor.lookups["testserv1"] = "1.2.3.4"
test_d = self._make_get_request(b"matrix://testserv1/foo/bar")
self.assertNoResult(test_d)
self.mock_resolver.resolve_service.assert_not_called()
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
client_factory.clientConnectionFailed(None, Exception("nope"))
self.reactor.pump((0.4,))
self.mock_resolver.resolve_service.assert_called_once_with(
b"_matrix._tcp.testserv1"
)
self.assertEqual(len(clients), 2)
(host, port, client_factory, _timeout, _bindAddress) = clients[1]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 8448)
http_server = self._make_connection(client_factory, expected_sni=b"testserv1")
self.assertEqual(len(http_server.requests), 0)
e = self.failureResultOf(test_d, ResponseNeverReceived)
failure_reason = e.value.reasons[0]
self.assertIsInstance(failure_reason.value, VerificationError)
def test_get_ip_address_bad_cert(self):
"""
Test the behaviour when the server name contains an explicit IP, but
the server cert doesn't cover it
"""
self.reactor.lookups["1.2.3.5"] = "1.2.3.5"
test_d = self._make_get_request(b"matrix://1.2.3.5/foo/bar")
self.assertNoResult(test_d)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1.2.3.5")
self.assertEqual(port, 8448)
http_server = self._make_connection(client_factory, expected_sni=None)
self.assertEqual(len(http_server.requests), 0)
e = self.failureResultOf(test_d, ResponseNeverReceived)
failure_reason = e.value.reasons[0]
self.assertIsInstance(failure_reason.value, VerificationError)
def test_get_no_srv_no_well_known(self):
"""
Test the behaviour when the server name has no port, no SRV, and no well-known
"""
self.mock_resolver.resolve_service.side_effect = generate_resolve_service([])
self.reactor.lookups["testserv"] = "1.2.3.4"
test_d = self._make_get_request(b"matrix://testserv/foo/bar")
self.assertNoResult(test_d)
self.mock_resolver.resolve_service.assert_not_called()
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
client_factory.clientConnectionFailed(None, Exception("nope"))
self.reactor.pump((0.4,))
self.mock_resolver.resolve_service.assert_called_once_with(
b"_matrix._tcp.testserv"
)
self.assertEqual(len(clients), 2)
(host, port, client_factory, _timeout, _bindAddress) = clients[1]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 8448)
http_server = self._make_connection(client_factory, expected_sni=b"testserv")
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(request.requestHeaders.getRawHeaders(b"host"), [b"testserv"])
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
def test_get_well_known(self):
"""Test the behaviour when the .well-known delegates elsewhere
"""
self.mock_resolver.resolve_service.side_effect = generate_resolve_service([])
self.reactor.lookups["testserv"] = "1.2.3.4"
self.reactor.lookups["target-server"] = "1::f"
test_d = self._make_get_request(b"matrix://testserv/foo/bar")
self.assertNoResult(test_d)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
self._handle_well_known_connection(
client_factory,
expected_sni=b"testserv",
content=b'{ "m.server": "target-server" }',
)
self.mock_resolver.resolve_service.assert_called_once_with(
b"_matrix._tcp.target-server"
)
self.assertEqual(len(clients), 2)
(host, port, client_factory, _timeout, _bindAddress) = clients[1]
self.assertEqual(host, "1::f")
self.assertEqual(port, 8448)
http_server = self._make_connection(
client_factory, expected_sni=b"target-server"
)
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(
request.requestHeaders.getRawHeaders(b"host"), [b"target-server"]
)
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
self.assertEqual(self.well_known_cache[b"testserv"], b"target-server")
self.reactor.pump((48 * 3600,))
self.well_known_cache.expire()
self.assertNotIn(b"testserv", self.well_known_cache)
def test_get_well_known_redirect(self):
"""Test the behaviour when the server name has no port and no SRV record, but
the .well-known has a 300 redirect
"""
self.mock_resolver.resolve_service.side_effect = generate_resolve_service([])
self.reactor.lookups["testserv"] = "1.2.3.4"
self.reactor.lookups["target-server"] = "1::f"
test_d = self._make_get_request(b"matrix://testserv/foo/bar")
self.assertNoResult(test_d)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop()
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
redirect_server = self._make_connection(
client_factory, expected_sni=b"testserv"
)
self.assertEqual(len(redirect_server.requests), 1)
request = redirect_server.requests[0]
request.redirect(b"https://testserv/even_better_known")
request.finish()
self.reactor.pump((0.1,))
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop()
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
well_known_server = self._make_connection(
client_factory, expected_sni=b"testserv"
)
self.assertEqual(len(well_known_server.requests), 1, "No request after 302")
request = well_known_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/even_better_known")
request.write(b'{ "m.server": "target-server" }')
request.finish()
self.reactor.pump((0.1,))
self.mock_resolver.resolve_service.assert_called_once_with(
b"_matrix._tcp.target-server"
)
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1::f")
self.assertEqual(port, 8448)
http_server = self._make_connection(
client_factory, expected_sni=b"target-server"
)
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(
request.requestHeaders.getRawHeaders(b"host"), [b"target-server"]
)
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
self.assertEqual(self.well_known_cache[b"testserv"], b"target-server")
self.reactor.pump((48 * 3600,))
self.well_known_cache.expire()
self.assertNotIn(b"testserv", self.well_known_cache)
def test_get_invalid_well_known(self):
"""
Test the behaviour when the server name has an *invalid* well-known (and no SRV)
"""
self.mock_resolver.resolve_service.side_effect = generate_resolve_service([])
self.reactor.lookups["testserv"] = "1.2.3.4"
test_d = self._make_get_request(b"matrix://testserv/foo/bar")
self.assertNoResult(test_d)
self.mock_resolver.resolve_service.assert_not_called()
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop()
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
self._handle_well_known_connection(
client_factory, expected_sni=b"testserv", content=b"NOT JSON"
)
self.mock_resolver.resolve_service.assert_called_once_with(
b"_matrix._tcp.testserv"
)
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop()
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 8448)
http_server = self._make_connection(client_factory, expected_sni=b"testserv")
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(request.requestHeaders.getRawHeaders(b"host"), [b"testserv"])
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
def test_get_well_known_unsigned_cert(self):
"""Test the behaviour when the .well-known server presents a cert
not signed by a CA
"""
self.mock_resolver.resolve_service.side_effect = generate_resolve_service([])
self.reactor.lookups["testserv"] = "1.2.3.4"
config = default_config("test", parse=True)
tls_factory = FederationPolicyForHTTPS(config)
agent = MatrixFederationAgent(
reactor=self.reactor,
tls_client_options_factory=tls_factory,
user_agent=b"test-agent",
ip_blacklist=IPSet(),
_srv_resolver=self.mock_resolver,
_well_known_resolver=WellKnownResolver(
self.reactor,
Agent(self.reactor, contextFactory=tls_factory),
b"test-agent",
well_known_cache=self.well_known_cache,
had_well_known_cache=self.had_well_known_cache,
),
)
test_d = agent.request(b"GET", b"matrix://testserv/foo/bar")
self.assertNoResult(test_d)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
http_proto = self._make_connection(client_factory, expected_sni=b"testserv")
self.assertEqual(len(http_proto.requests), 0)
self.mock_resolver.resolve_service.assert_called_once_with(
b"_matrix._tcp.testserv"
)
def test_get_hostname_srv(self):
"""
Test the behaviour when there is a single SRV record
"""
self.mock_resolver.resolve_service.side_effect = generate_resolve_service(
[Server(host=b"srvtarget", port=8443)]
)
self.reactor.lookups["srvtarget"] = "1.2.3.4"
test_d = self._make_get_request(b"matrix://testserv/foo/bar")
self.assertNoResult(test_d)
self.mock_resolver.resolve_service.assert_called_once_with(
b"_matrix._tcp.testserv"
)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 8443)
http_server = self._make_connection(client_factory, expected_sni=b"testserv")
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(request.requestHeaders.getRawHeaders(b"host"), [b"testserv"])
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
def test_get_well_known_srv(self):
"""Test the behaviour when the .well-known redirects to a place where there
is a SRV.
"""
self.reactor.lookups["testserv"] = "1.2.3.4"
self.reactor.lookups["srvtarget"] = "5.6.7.8"
test_d = self._make_get_request(b"matrix://testserv/foo/bar")
self.assertNoResult(test_d)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
self.mock_resolver.resolve_service.side_effect = generate_resolve_service(
[Server(host=b"srvtarget", port=8443)]
)
self._handle_well_known_connection(
client_factory,
expected_sni=b"testserv",
content=b'{ "m.server": "target-server" }',
)
self.mock_resolver.resolve_service.assert_called_once_with(
b"_matrix._tcp.target-server"
)
self.assertEqual(len(clients), 2)
(host, port, client_factory, _timeout, _bindAddress) = clients[1]
self.assertEqual(host, "5.6.7.8")
self.assertEqual(port, 8443)
http_server = self._make_connection(
client_factory, expected_sni=b"target-server"
)
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(
request.requestHeaders.getRawHeaders(b"host"), [b"target-server"]
)
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
def test_idna_servername(self):
"""test the behaviour when the server name has idna chars in"""
self.mock_resolver.resolve_service.side_effect = generate_resolve_service([])
self.reactor.lookups["xn--bcher-kva.com"] = "1.2.3.4"
test_d = self._make_get_request(b"matrix://xn--bcher-kva.com/foo/bar")
self.assertNoResult(test_d)
self.mock_resolver.resolve_service.assert_not_called()
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
client_factory.clientConnectionFailed(None, Exception("nope"))
self.reactor.pump((0.4,))
self.mock_resolver.resolve_service.assert_called_once_with(
b"_matrix._tcp.xn--bcher-kva.com"
)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 2)
(host, port, client_factory, _timeout, _bindAddress) = clients[1]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 8448)
http_server = self._make_connection(
client_factory, expected_sni=b"xn--bcher-kva.com"
)
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(
request.requestHeaders.getRawHeaders(b"host"), [b"xn--bcher-kva.com"]
)
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
def test_idna_srv_target(self):
"""test the behaviour when the target of a SRV record has idna chars"""
self.mock_resolver.resolve_service.side_effect = generate_resolve_service(
[Server(host=b"xn--trget-3qa.com", port=8443)]
)
self.reactor.lookups["xn--trget-3qa.com"] = "1.2.3.4"
test_d = self._make_get_request(b"matrix://xn--bcher-kva.com/foo/bar")
self.assertNoResult(test_d)
self.mock_resolver.resolve_service.assert_called_once_with(
b"_matrix._tcp.xn--bcher-kva.com"
)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients[0]
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 8443)
http_server = self._make_connection(
client_factory, expected_sni=b"xn--bcher-kva.com"
)
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(
request.requestHeaders.getRawHeaders(b"host"), [b"xn--bcher-kva.com"]
)
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
def test_well_known_cache(self):
self.reactor.lookups["testserv"] = "1.2.3.4"
fetch_d = defer.ensureDeferred(
self.well_known_resolver.get_well_known(b"testserv")
)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop(0)
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
well_known_server = self._handle_well_known_connection(
client_factory,
expected_sni=b"testserv",
response_headers={b"Cache-Control": b"max-age=1000"},
content=b'{ "m.server": "target-server" }',
)
r = self.successResultOf(fetch_d)
self.assertEqual(r.delegated_server, b"target-server")
well_known_server.loseConnection()
fetch_d = defer.ensureDeferred(
self.well_known_resolver.get_well_known(b"testserv")
)
r = self.successResultOf(fetch_d)
self.assertEqual(r.delegated_server, b"target-server")
self.reactor.pump((1000.0,))
fetch_d = defer.ensureDeferred(
self.well_known_resolver.get_well_known(b"testserv")
)
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop(0)
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
self._handle_well_known_connection(
client_factory,
expected_sni=b"testserv",
content=b'{ "m.server": "other-server" }',
)
r = self.successResultOf(fetch_d)
self.assertEqual(r.delegated_server, b"other-server")
def test_well_known_cache_with_temp_failure(self):
"""Test that we refetch well-known before the cache expires, and that
it ignores transient errors.
"""
self.reactor.lookups["testserv"] = "1.2.3.4"
fetch_d = defer.ensureDeferred(
self.well_known_resolver.get_well_known(b"testserv")
)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop(0)
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
well_known_server = self._handle_well_known_connection(
client_factory,
expected_sni=b"testserv",
response_headers={b"Cache-Control": b"max-age=1000"},
content=b'{ "m.server": "target-server" }',
)
r = self.successResultOf(fetch_d)
self.assertEqual(r.delegated_server, b"target-server")
well_known_server.loseConnection()
self.reactor.pump((900.0,))
fetch_d = defer.ensureDeferred(
self.well_known_resolver.get_well_known(b"testserv")
)
attempts = 0
while self.reactor.tcpClients:
clients = self.reactor.tcpClients
(host, port, client_factory, _timeout, _bindAddress) = clients.pop(0)
attempts += 1
client_factory.clientConnectionFailed(None, Exception("nope"))
self.reactor.pump((1.0, 1.0))
self.assertGreater(attempts, 1)
r = self.successResultOf(fetch_d)
self.assertEqual(r.delegated_server, b"target-server")
self.reactor.pump((10000.0,))
fetch_d = defer.ensureDeferred(
self.well_known_resolver.get_well_known(b"testserv")
)
clients = self.reactor.tcpClients
(host, port, client_factory, _timeout, _bindAddress) = clients.pop(0)
client_factory.clientConnectionFailed(None, Exception("nope"))
self.reactor.pump((0.4,))
r = self.successResultOf(fetch_d)
self.assertEqual(r.delegated_server, None)
def test_well_known_too_large(self):
"""A well-known query that returns a result which is too large should be rejected."""
self.reactor.lookups["testserv"] = "1.2.3.4"
fetch_d = defer.ensureDeferred(
self.well_known_resolver.get_well_known(b"testserv")
)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop(0)
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
self._handle_well_known_connection(
client_factory,
expected_sni=b"testserv",
response_headers={b"Cache-Control": b"max-age=1000"},
content=b'{ "m.server": "' + (b"a" * WELL_KNOWN_MAX_SIZE) + b'" }',
)
r = self.successResultOf(fetch_d)
self.assertIsNone(r.delegated_server)
def test_srv_fallbacks(self):
"""Test that other SRV results are tried if the first one fails.
"""
self.mock_resolver.resolve_service.side_effect = generate_resolve_service(
[
Server(host=b"target.com", port=8443),
Server(host=b"target.com", port=8444),
]
)
self.reactor.lookups["target.com"] = "1.2.3.4"
test_d = self._make_get_request(b"matrix://testserv/foo/bar")
self.assertNoResult(test_d)
self.mock_resolver.resolve_service.assert_called_once_with(
b"_matrix._tcp.testserv"
)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop(0)
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 8443)
client_factory.clientConnectionFailed(None, Exception("nope"))
self.reactor.pump((0.4,))
self.assertNoResult(test_d)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop(0)
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 8444)
http_server = self._make_connection(client_factory, expected_sni=b"testserv")
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(request.path, b"/foo/bar")
self.assertEqual(request.requestHeaders.getRawHeaders(b"host"), [b"testserv"])
request.finish()
self.reactor.pump((0.1,))
self.successResultOf(test_d)
tests/http/federation/test_matrix_federation_agent.py — function:MatrixFederationAgentTests.test_well_known_too_large (lines 1111-1135)
def test_well_known_too_large(self):
"""A well-known query that returns a result which is too large should be rejected."""
self.reactor.lookups["testserv"] = "1.2.3.4"
fetch_d = defer.ensureDeferred(
self.well_known_resolver.get_well_known(b"testserv")
)
clients = self.reactor.tcpClients
self.assertEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop(0)
self.assertEqual(host, "1.2.3.4")
self.assertEqual(port, 443)
self._handle_well_known_connection(
client_factory,
expected_sni=b"testserv",
response_headers={b"Cache-Control": b"max-age=1000"},
content=b'{ "m.server": "' + (b"a" * WELL_KNOWN_MAX_SIZE) + b'" }',
)
r = self.successResultOf(fetch_d)
self.assertIsNone(r.delegated_server)
tests/http/federation/test_matrix_federation_agent.py — module:<module>@38 (lines 38-42)
from synapse.http.federation.well_known_resolver import (
WELL_KNOWN_MAX_SIZE,
WellKnownResolver,
_cache_period_from_headers,
)
