diff --git a/doc/py-inproc.rst b/doc/py-inproc.rst
index c4010b4c6..c9d164dae 100644
--- a/doc/py-inproc.rst
+++ b/doc/py-inproc.rst
@@ -45,7 +45,7 @@ Sending
    :param thread_pool: Thread pool handling the I/O
    :type thread_pool: :py:class:`spead2.ThreadPool`
    :param queues: Queues holding the generated packets (one per substream).
-   :type queue: List[:py:class:`spead2.InprocQueue`]
+   :type queues: List[:py:class:`spead2.InprocQueue`]
    :param config: Stream configuration
    :type config: :py:class:`spead2.send.StreamConfig`
 
@@ -53,7 +53,7 @@ Sending
 
       Get the queues passed to the constructor.
 
-.. autoclass:: spead2.send.asyncio.InprocStream(thread_pool, queue, config)
+.. autoclass:: spead2.send.asyncio.InprocStream(thread_pool, queues, config)
 
    An asynchronous version of :py:class:`spead2.send.InprocStream`. Refer to
    :ref:`asynchronous-send` for general details about asynchronous transport.
diff --git a/doc/py-send.rst b/doc/py-send.rst
index 309c93e5c..7d01445f0 100644
--- a/doc/py-send.rst
+++ b/doc/py-send.rst
@@ -241,12 +241,16 @@ Because spead2 was originally designed for UDP, the default packet size in
 :py:class:`~spead2.send.StreamConfig` is quite small. Performance can be improved by
 increasing it (but be sure the receiver is configured to handle larger packets).
 
-.. py:class:: spead2.send.TcpStream(thread_pool, hostname, port, config=spead2.send.StreamConfig(), buffer_size=DEFAULT_BUFFER_SIZE, interface_address='')
+TCP/IP is also a connection-oriented protocol, and does not support substreams. The
+`endpoints` must therefore contain exactly one endpoint (it takes a list for
+consistency with :class:`~spead2.send.UdpStream`).
+
+.. py:class:: spead2.send.TcpStream(thread_pool, endpoints, config=spead2.send.StreamConfig(), buffer_size=DEFAULT_BUFFER_SIZE, interface_address='')
 
    :param thread_pool: Thread pool handling the I/O
    :type thread_pool: :py:class:`spead2.ThreadPool`
-   :param str hostname: Peer hostname
-   :param int port: Peer port
+   :param endpoints: Peer endpoint (must contain exactly one element).
+   :type endpoints: List[Tuple[str, int]]
    :param config: Stream configuration
    :type config: :py:class:`spead2.send.StreamConfig`
    :param int buffer_size: Socket buffer size. A warning is logged if this
diff --git a/spead2/send/asyncio.py b/spead2/send/asyncio.py
index ec2ab9a90..499f0432e 100644
--- a/spead2/send/asyncio.py
+++ b/spead2/send/asyncio.py
@@ -95,10 +95,8 @@ async def async_flush(self):
     ----------
     thread_pool : :py:class:`spead2.ThreadPool`
         Thread pool handling the I/O
-    hostname : str
-        Peer hostname
-    port : int
-        Peer port
+    endpoints : List[Tuple[str, int]]
+        Peer endpoints (one per substreams).
     config : :py:class:`spead2.send.StreamConfig`
         Stream configuration
     buffer_size : int
@@ -167,7 +165,7 @@ def callback(arg):
     ----------
     thread_pool : :py:class:`spead2.ThreadPool`
         Thread pool handling the I/O
-    queue : :py:class:`spead2.InprocQueue`
+    queues : List[:py:class:`spead2.InprocQueue`]
         Queue holding the data in flight
     config : :py:class:`spead2.send.StreamConfig`
         Stream configuration