Timeout error on handshake #4
Description
I've been trying to connect to my JVC LX-NZ30 projector via Home Assistant which seems to use this module. Was getting a generic connection message so I traced down to here and tried to run this module directly form Python on my Home Assistant server.
Here's my test code, based on your example:
import asyncio
from jvcprojector.projector import JvcProjector
from jvcprojector import const
async def main():
jp = JvcProjector(host="192.168.1.19", port=4661, timeout=2)
await jp.connect()
print("Projector info:")
print(await jp.get_info())
await jp.disconnect()
asyncio.run(main())
Here's the error output I get:
Traceback (most recent call last):
File "/usr/lib/python3.11/asyncio/tasks.py", line 490, in wait_for
return fut.result()
^^^^^^^^^^^^
File "/usr/lib/python3.11/asyncio/streams.py", line 689, in read
await self._wait_for_data('read')
File "/usr/lib/python3.11/asyncio/streams.py", line 522, in _wait_for_data
await self._waiter
asyncio.exceptions.CancelledError
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/usr/local/lib/python3.11/dist-packages/jvcprojector/device.py", line 117, in _connect
data = await self._conn.read(len(PJOK))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/dist-packages/jvcprojector/connection.py", line 50, in read
return await asyncio.wait_for(self._reader.read(n), timeout=self._timeout)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.11/asyncio/tasks.py", line 492, in wait_for
raise exceptions.TimeoutError() from exc
TimeoutError
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/homeassistant/jvc_get_info.py", line 15, in <module>
asyncio.run(main())
File "/usr/lib/python3.11/asyncio/runners.py", line 190, in run
return runner.run(main)
^^^^^^^^^^^^^^^^
File "/usr/lib/python3.11/asyncio/runners.py", line 118, in run
return self._loop.run_until_complete(task)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.11/asyncio/base_events.py", line 653, in run_until_complete
return future.result()
^^^^^^^^^^^^^^^
File "/homeassistant/jvc_get_info.py", line 8, in main
await jp.connect()
File "/usr/local/lib/python3.11/dist-packages/jvcprojector/projector.py", line 90, in connect
if not await self.test():
^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/dist-packages/jvcprojector/projector.py", line 152, in test
await self._send([cmd])
File "/usr/local/lib/python3.11/dist-packages/jvcprojector/projector.py", line 180, in _send
await self._device.send(cmds)
File "/usr/local/lib/python3.11/dist-packages/jvcprojector/device.py", line 73, in send
await self._connect()
File "/usr/local/lib/python3.11/dist-packages/jvcprojector/device.py", line 119, in _connect
raise JvcProjectorConnectError("Handshake init timeout") from err
jvcprojector.error.JvcProjectorConnectError: Handshake init timeout
It seems to be failing waiting on a handshake response. I've seen other mention of this handshake protocol on the web but the LX-NZ30 doesn't seem to require/support it. I've managed to successfully control my projector with as little as this:
import socket
import binascii
host = '192.168.1.19'
port = 4661
ctrl_power_on = b'\x06\x14\x00\x04\x00\x34\x11\x00\x00\x5D'
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.send(ctrl_power_on)
received_data = s.recv(1024)
print (binascii.hexlify(received_data))