Migrate to new project structure.

libp2p/stream_muxer/muxed_connection_interface.py

@@ -0,0 +1,39 @@
+from abc import ABC, abstractmethod
+
+
+class IMuxedConn(ABC):
+    """
+    reference: https://github.com/libp2p/go-stream-muxer/blob/master/muxer.go
+    """
+
+    @abstractmethod
+    def close(self):
+        """
+        close connection
+        :return: true if successful
+        """
+
+    @abstractmethod
+    def is_closed(self):
+        """
+        check connection is fully closed
+        :return: true if successful
+        """
+
+    @abstractmethod
+    def open_stream(self, protocol_id, peer_id, multi_addr):
+        """
+        creates a new muxed_stream
+        :param protocol_id: protocol_id of stream
+        :param stream_id: stream_id of stream
+        :param peer_id: peer_id that stream connects to
+        :param multi_addr: multi_addr that stream connects to
+        :return: a new stream
+        """
+
+    @abstractmethod
+    def accept_stream(self):
+        """
+        accepts a muxed stream opened by the other end
+        :return: the accepted stream
+        """