TCP Server inside Blender [closed]

Question

I'm trying to implement a tcp server inside blender with a time operator using asyncio. but the code always crash the UI. I know there is a way to do this inside blender since some people have achieved it already...i found that blender cloud addon..can be the way to go but i don't know where to start any help???

This is the code im trying to mix with the blender cloud addon.. i think i need to integrate the async_loop.py file but i don't know how to start

import asyncio

async def handle_echo(reader, writer):
   data = await reader.read(100)
   message = data.decode()
   addr = writer.get_extra_info('peername')
   print("Received %r from %r" % (message, addr))

   print("Send: %r" % message)
   writer.write(data)
   await writer.drain()

   print("Close the client socket")
   writer.close()

loop = asyncio.get_event_loop()
coro = asyncio.start_server(handle_echo, '127.0.0.1', 8888, loop=loop)
server = loop.run_until_complete(coro)

# Serve requests until Ctrl+C is pressed
print('Serving on {}'.format(server.sockets[0].getsockname()))
try:
   loop.run_forever()
except KeyboardInterrupt:
   pass

# Close the server
server.close()
loop.run_until_complete(server.wait_closed())
loop.close()

right now the code im using is by creating a file and reading it with a time operator like it is described here

send instructions to blender from external application

Answer 1

loop.run_forever() will make your script block Blender itself. You have to call loop.stop() before that, so that run_forever() will only do a single iteration over the asyncio tasks that can be run at that time. Calling this single iteration then has to be performed frequently. This is what the asyncio.loop modal operator is for.

This is quite a complex thing to attempt when you're relatively new to Python. Probably it would be easier to just use multi-processing and start your server in a separate process, instead of using asyncio.