diff options
Diffstat (limited to 'synapse/http/federation')
| -rw-r--r-- | synapse/http/federation/matrix_federation_agent.py | 28 | ||||
| -rw-r--r-- | synapse/http/federation/srv_resolver.py | 10 | ||||
| -rw-r--r-- | synapse/http/federation/well_known_resolver.py | 22 |
3 files changed, 37 insertions, 23 deletions
diff --git a/synapse/http/federation/matrix_federation_agent.py b/synapse/http/federation/matrix_federation_agent.py index f5f917f5ae..369bf9c2fc 100644 --- a/synapse/http/federation/matrix_federation_agent.py +++ b/synapse/http/federation/matrix_federation_agent.py @@ -15,6 +15,7 @@ import logging import urllib +from typing import List from netaddr import AddrFormatError, IPAddress from zope.interface import implementer @@ -48,6 +49,9 @@ class MatrixFederationAgent(object): tls_client_options_factory (FederationPolicyForHTTPS|None): factory to use for fetching client tls options, or none to disable TLS. + user_agent (bytes): + The user agent header to use for federation requests. + _srv_resolver (SrvResolver|None): SRVResolver impl to use for looking up SRV records. None to use a default implementation. @@ -61,6 +65,7 @@ class MatrixFederationAgent(object): self, reactor, tls_client_options_factory, + user_agent, _srv_resolver=None, _well_known_resolver=None, ): @@ -78,6 +83,7 @@ class MatrixFederationAgent(object): ), pool=self._pool, ) + self.user_agent = user_agent if _well_known_resolver is None: _well_known_resolver = WellKnownResolver( @@ -87,6 +93,7 @@ class MatrixFederationAgent(object): pool=self._pool, contextFactory=tls_client_options_factory, ), + user_agent=self.user_agent, ) self._well_known_resolver = _well_known_resolver @@ -149,7 +156,7 @@ class MatrixFederationAgent(object): parsed_uri = urllib.parse.urlparse(uri) # We need to make sure the host header is set to the netloc of the - # server. + # server and that a user-agent is provided. if headers is None: headers = Headers() else: @@ -157,6 +164,8 @@ class MatrixFederationAgent(object): if not headers.hasHeader(b"host"): headers.addRawHeader(b"host", parsed_uri.netloc) + if not headers.hasHeader(b"user-agent"): + headers.addRawHeader(b"user-agent", self.user_agent) res = yield make_deferred_yieldable( self._agent.request(method, uri, headers, bodyProducer) @@ -228,22 +237,21 @@ class MatrixHostnameEndpoint(object): return run_in_background(self._do_connect, protocol_factory) - @defer.inlineCallbacks - def _do_connect(self, protocol_factory): + async def _do_connect(self, protocol_factory): first_exception = None - server_list = yield self._resolve_server() + server_list = await self._resolve_server() for server in server_list: host = server.host port = server.port try: - logger.info("Connecting to %s:%i", host.decode("ascii"), port) + logger.debug("Connecting to %s:%i", host.decode("ascii"), port) endpoint = HostnameEndpoint(self._reactor, host, port) if self._tls_options: endpoint = wrapClientTLS(self._tls_options, endpoint) - result = yield make_deferred_yieldable( + result = await make_deferred_yieldable( endpoint.connect(protocol_factory) ) @@ -263,13 +271,9 @@ class MatrixHostnameEndpoint(object): # to try and if that doesn't work then we'll have an exception. raise Exception("Failed to resolve server %r" % (self._parsed_uri.netloc,)) - @defer.inlineCallbacks - def _resolve_server(self): + async def _resolve_server(self) -> List[Server]: """Resolves the server name to a list of hosts and ports to attempt to connect to. - - Returns: - Deferred[list[Server]] """ if self._parsed_uri.scheme != b"matrix": @@ -290,7 +294,7 @@ class MatrixHostnameEndpoint(object): if port or _is_ip_literal(host): return [Server(host, port or 8448)] - server_list = yield self._srv_resolver.resolve_service(b"_matrix._tcp." + host) + server_list = await self._srv_resolver.resolve_service(b"_matrix._tcp." + host) if server_list: return server_list diff --git a/synapse/http/federation/srv_resolver.py b/synapse/http/federation/srv_resolver.py index 021b233a7d..2ede90a9b1 100644 --- a/synapse/http/federation/srv_resolver.py +++ b/synapse/http/federation/srv_resolver.py @@ -17,10 +17,10 @@ import logging import random import time +from typing import List import attr -from twisted.internet import defer from twisted.internet.error import ConnectError from twisted.names import client, dns from twisted.names.error import DNSNameError, DomainError @@ -113,16 +113,14 @@ class SrvResolver(object): self._cache = cache self._get_time = get_time - @defer.inlineCallbacks - def resolve_service(self, service_name): + async def resolve_service(self, service_name: bytes) -> List[Server]: """Look up a SRV record Args: service_name (bytes): record to look up Returns: - Deferred[list[Server]]: - a list of the SRV records, or an empty list if none found + a list of the SRV records, or an empty list if none found """ now = int(self._get_time()) @@ -136,7 +134,7 @@ class SrvResolver(object): return _sort_server_list(servers) try: - answers, _, _ = yield make_deferred_yieldable( + answers, _, _ = await make_deferred_yieldable( self._dns_client.lookupService(service_name) ) except DNSNameError: diff --git a/synapse/http/federation/well_known_resolver.py b/synapse/http/federation/well_known_resolver.py index 7ddfad286d..f794315deb 100644 --- a/synapse/http/federation/well_known_resolver.py +++ b/synapse/http/federation/well_known_resolver.py @@ -13,7 +13,6 @@ # See the License for the specific language governing permissions and # limitations under the License. -import json import logging import random import time @@ -23,9 +22,10 @@ import attr from twisted.internet import defer from twisted.web.client import RedirectAgent, readBody from twisted.web.http import stringToDatetime +from twisted.web.http_headers import Headers from synapse.logging.context import make_deferred_yieldable -from synapse.util import Clock +from synapse.util import Clock, json_decoder from synapse.util.caches.ttlcache import TTLCache from synapse.util.metrics import Measure @@ -78,7 +78,12 @@ class WellKnownResolver(object): """ def __init__( - self, reactor, agent, well_known_cache=None, had_well_known_cache=None + self, + reactor, + agent, + user_agent, + well_known_cache=None, + had_well_known_cache=None, ): self._reactor = reactor self._clock = Clock(reactor) @@ -92,6 +97,7 @@ class WellKnownResolver(object): 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 @defer.inlineCallbacks def get_well_known(self, server_name): @@ -174,7 +180,7 @@ class WellKnownResolver(object): if response.code != 200: raise Exception("Non-200 response %s" % (response.code,)) - parsed_body = json.loads(body.decode("utf-8")) + 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") @@ -227,6 +233,10 @@ class WellKnownResolver(object): 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 @@ -234,7 +244,9 @@ class WellKnownResolver(object): logger.info("Fetching %s", uri_str) try: response = yield make_deferred_yieldable( - self._well_known_agent.request(b"GET", uri) + self._well_known_agent.request( + b"GET", uri, headers=Headers(headers) + ) ) body = yield make_deferred_yieldable(readBody(response)) |