script: add a nodetool. Since p2p is likely to change, just leave this code here since it has jsonrpc snippet in python we can use later.

script/nodetool.py

@@ -0,0 +1,52 @@
+import asyncio, json, random, sys
+
+class JsonRpc:
+
+    async def start(self, server, port):
+        reader, writer = await asyncio.open_connection(server, port)
+        self.reader = reader
+        self.writer = writer
+
+    async def stop(self):
+        self.writer.close()
+        await self.writer.wait_closed()
+
+    async def _make_request(self, method, params):
+        ident = random.randint(0, 2**32)
+        request = {
+            "jsonrpc": "2.0",
+            "method": method,
+            "params": params,
+            "id": ident
+        }
+
+        message = json.dumps(request) + "\n"
+        self.writer.write(message.encode())
+        await self.writer.drain()
+
+        data = await self.reader.readline()
+        message = data.decode()
+        response = json.loads(message)
+        return response["result"]
+
+    async def ping(self):
+        return await self._make_request("ping", [])
+
+    async def dnet_switch(self, state):
+        return await self._make_request("dnet_switch", [state])
+
+    async def dnet_info(self):
+        return await self._make_request("dnet_info", [])
+
+async def main(argv):
+    rpc = JsonRpc()
+    await rpc.start("localhost", 26660)
+    await rpc.dnet_switch(True)
+
+    print(await rpc.dnet_info())
+
+    await rpc.dnet_switch(False)
+    await rpc.stop()
+
+asyncio.run(main(sys.argv))
+