refactor for sprint

muxer/mplex/muxed_stream.py

@@ -0,0 +1,34 @@
+from .muxed_stream_interface import IMuxedStream
+
+class MuxedStream(IMuxedStream):
+    """
+    reference: https://github.com/libp2p/go-mplex/blob/master/stream.go
+    """
+
+    def __init__(self, protocol_id, stream_name):
+        self.protocol_id = protocol_id
+        self.name = stream_name
+
+    def read(self):
+        pass
+
+    def write(self):
+        pass
+
+    def close(self):
+        pass
+
+    def reset(self):
+        """
+        closes both ends of the stream
+        tells this remote side to hang up
+        :return: error/exception
+        """
+        pass
+
+    def set_deadline(self, ttl):
+        """
+        set deadline for muxed stream
+        :return: a new stream
+        """
+        pass