diff --git a/src/wormhole_transit_relay/test/common.py b/src/wormhole_transit_relay/test/common.py
index 5a3bbf6..8690e91 100644
--- a/src/wormhole_transit_relay/test/common.py
+++ b/src/wormhole_transit_relay/test/common.py
@@ -72,7 +72,6 @@ class ServerBase:
             usage_db=usage_db,
         )
         self._transit_server = Transit(usage, lambda: 123456789.0)
-        self._transit_server._debug_log = self.log_requests
 
     def new_protocol(self):
         """
diff --git a/src/wormhole_transit_relay/test/test_transit_server.py b/src/wormhole_transit_relay/test/test_transit_server.py
index 1854a17..9fee87d 100644
--- a/src/wormhole_transit_relay/test/test_transit_server.py
+++ b/src/wormhole_transit_relay/test/test_transit_server.py
@@ -1,11 +1,19 @@
 from __future__ import print_function, unicode_literals
+import base64
 from binascii import hexlify
 from twisted.trial import unittest
+from twisted.test import proto_helpers
 from .common import ServerBase
 from ..server_state import (
     MemoryUsageRecorder,
     blur_size,
 )
+from ..transit_server import (
+    WebSocketTransitConnection,
+)
+
+from autobahn.twisted.websocket import WebSocketServerFactory
+
 
 def handshake(token, side=None):
     hs = b"please relay " + hexlify(token)
@@ -458,3 +466,49 @@ class Usage(ServerBase, unittest.TestCase):
         self.flush()
         self.assertEqual(len(self._usage.events), 3, self._usage)
         self.assertEqual(self._usage.events[2]["mood"], "happy")
+
+
+class UsageWebSockets(Usage):
+    """
+    All the tests of 'Usage' except with a WebSocket (instead of TCP)
+    transport.
+
+    This overrides ServerBase.new_protocol to achieve this. It might
+    be nicer to parametrize these tests in a way that doesn't use
+    inheritance .. but all the support etc classes are set up that way
+    already.
+    """
+
+    def new_protocol(self):
+        ws_factory = WebSocketServerFactory("ws://localhost:4002")  # FIXME: url
+        ws_factory.protocol = WebSocketTransitConnection
+        ws_factory.websocket_protocols = ["transit_relay"]
+        ws_factory.transit = self._transit
+
+        protocol = ws_factory.buildProtocol(('127.0.0.1', 4002))
+        transport = proto_helpers.StringTransportWithDisconnection()
+        protocol.makeConnection(transport)
+        transport.protocol = protocol
+
+        class Producer:
+            pass
+        protocol.registerProducer(Producer(), False)
+##        protocol.transport.abortConnection = protocol.transport.loseConnection
+
+        # unlike in the TCP case, we need to drive a WebSocket
+        # handshake through the server first.
+        options = {}
+        self._websocket_key = b"0" * 16
+        request = (
+            "GET /ws HTTP/1.1\x0d\x0a"
+            "Host: 127.0.0.1:4002\x0d\x0a"
+            "Upgrade: WebSocket\x0d\x0a"
+            "Connection: Upgrade\x0d\x0a"
+            "Sec-WebSocket-Key: {}\x0d\x0a"
+            "Sec-WebSocket-Protocol: transit-relay\x0d\x0a"
+            "Sec-WebSocket-Version: 13\x0d\x0a"
+            "\x0d\x0a"
+        ).format(base64.b64encode(self._websocket_key).decode())
+        protocol.dataReceived(request.encode("utf8"))
+
+        return protocol
diff --git a/src/wormhole_transit_relay/transit_server.py b/src/wormhole_transit_relay/transit_server.py
index 5ca92f1..9e5a419 100644
--- a/src/wormhole_transit_relay/transit_server.py
+++ b/src/wormhole_transit_relay/transit_server.py
@@ -289,6 +289,11 @@ class WebSocketTransitConnection(WebSocketServerProtocol):
         else:
             self._state.got_bytes(payload)
 
+    def disconnect_redundant(self):
+        # this is called if a buddy connected and we were found unnecessary.
+        # Any token-tracking cleanup will have been done before we're called.
+        self.transport.loseConnection()
+
     def onClose(self, wasClean, code, reason):
         """
         IWebSocketChannel API