A new websocket-based ability to enable PyNARS communicate with Web client #36
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- Optimized `ConsolePlus` and some fixes:
- Fixed a syntax bug in 'Console.py'
- Added "Output History" to record the output of NARS reasoner uses "output event handlers" in `Interface.py` (by enhances function `register_interface`)
- (NEW) ConsoleWeb: Set up a WebSocket-based server using package `websockets`
- It gives ability to remote control `ConsolePlus` via WS connection "ws://[server address]:[server port]" (it can be set by user) and input Narsese/cmd, just like directly input on the command line.
- In addition to receiving messages sent by clients as console input, it also returns the output of NARS reasoners as JSON text, which is in format `{"interface_name": str, "output_type": str, "content": str}`
- an example output: `{"interface_name": "initial", "output_type": "ANSWER", "content": "<B-->C>. %1.000;0.900%"}`
|
In additional, I think this websocket service can be flexible connected to morden Web ecology. A simple local website exampleThis is an simple website build with native HTML: <!DOCTYPE html>
<meta charset="utf-8" name="viewport" content="width=device-width, initial-scale=1.0">
<html lang="en">
<head>
<title>PyNARS WebSocket Client V1</title>
</head>
<body>
<h1>Out</h1>
<p id="output"></p>
<h1>In</h1>
<input type="text" id="input" placeholder="Input Narsese or cmds" value="A --> B.">
<input type="text" id="address" placeholder="Input Narsese or cmds" value="ws://127.0.0.1:8765">
<script>
const input = document.getElementById('input')
const output = document.getElementById('output')
const address = document.getElementById('address')
// Socket Client //
let socketIO
function resetInputWS() {
socketIO?.close()
socketIO = new WebSocket(address.value)
if (socketIO) socketIO.onopen = () => {
output.innerText += `Websocket connection is established to ${address.value}.\n`
socketIO.onmessage = handleMessage
}
output.innerText += `Websocket connection is reset to ${address.value}.\n`
}
// Message handler //
function handleMessage(event) {
// format: {"interface_name": "initial", "output_type": "ANSWER", "content": "<B-->C>. %1.000;0.900%"}
let output_data = JSON.parse(event.data)
output.innerText += `out> ${output_data?.interface_name}: [${output_data?.output_type}] ${output_data?.content}\n`
}
// Listeners //
input.addEventListener('keydown', (event) => {
if (event.key === 'Enter') {
socketIO?.send?.(input.value)
output.innerText += `in> ${input.value}\n`
input.value = ''
}
})
address.addEventListener('keydown', (event) => {
if (event.key === 'Enter') {
resetInputWS()
event.preventDefault()
}
})
// Initialize //
resetInputWS()
</script>
</html>By using this simple website, we can access PyNARS from any local browser, such as: And this is just a simple example of a PyNARS web cilent - I think there's a lot potential things to boost PyNARS's flexibility and connectivity. |
ARCJ137442
changed the title
ConsoleWeb
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Background
This comes from a comment on issue #35, in which I considered to make a websocket-based IO channel for PyNARS based on
websockets.After reading Bowen Xu's reply, I think aio_rpc is related to "socket" rather than "websocket", which is a duplex communication protocol built on modern Web technology.
So aiming to improve the ability of connecting to other clients (such as web browser), I added a new cmd
server-websocketto implement this ability, and made it optional with dynamic imports (so there is no need to force changes to PyNARS dependencies).Overview
Optimized
ConsolePlusand some fixesInterface.py(by enhances functionregister_interface)Console.py(New) cmd
server-websocket: Set up a WebSocket-based server using packagewebsocketsConsolePlusvia WS connection "ws://[server address]:[server port]" (it can be set by user) and input Narsese/cmd, just like directly input on the command line.[{"interface_name": str, "output_type": str, "content": str}, ...][{"interface_name": "initial", "output_type": "OUT", "content": "<B-->C>. %1.000;0.900%"}, {"interface_name": "initial", "output_type": "ANSWER", "content": "<B-->C>. %1.000;0.900%"}]Previews
Test code of client
Client output
Server output