# Trio-Engine.IO
[](https://github.com/Elmeric/trio-engineio)
[](https://github.com/psf/black)
[](https://github.com/Elmeric/trio-engineio/actions/workflows/test.yml)
[](https://coveralls.io/github/Elmeric/trio-engineio)
[](https://github.com/Elmeric/trio-engineio/blob/master/LICENSE)
An asynchronous **[Engine.IO](https://github.com/socketio/engine.io-protocol/tree/v3)** client using the [`trio`](https://trio.readthedocs/en/latest) framework.
Only the revision **3** of the Engine.IO protocol is supported.
## Requirements
- Python 3.7+
- [`trio`](https://trio.readthedocs.io/)
- [`httpcore`](https://www.encode.io/httpcore/)
- [`trio-websocket`](https://trio-websocket.readthedocs.io/)
## Usage
```Python
import trio
from trio_engineio.trio_client import EngineIoClient, EngineIoConnectionError
def on_connect():
print(f"***** Connected")
def on_message(msg):
print(f"***** Received message: {msg}")
def on_disconnect():
print(f"***** Disconnected")
async def main():
eio = EngineIoClient(logger=False)
eio.on("connect", on_connect)
eio.on("message", on_message)
eio.on("disconnect", on_disconnect)
async with trio.open_nursery() as nursery:
try:
await eio.connect(nursery, "http://127.0.0.1:1234")
except EngineIoConnectionError:
return False
return True
trio.run(main)
```
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"description": "\n# Trio-Engine.IO\n\n[](https://github.com/Elmeric/trio-engineio)\n[](https://github.com/psf/black)\n[](https://github.com/Elmeric/trio-engineio/actions/workflows/test.yml)\n[](https://coveralls.io/github/Elmeric/trio-engineio)\n[](https://github.com/Elmeric/trio-engineio/blob/master/LICENSE)\n\nAn asynchronous **[Engine.IO](https://github.com/socketio/engine.io-protocol/tree/v3)** client using the [`trio`](https://trio.readthedocs/en/latest) framework.\n\nOnly the revision **3** of the Engine.IO protocol is supported.\n\n## Requirements\n\n- Python 3.7+\n- [`trio`](https://trio.readthedocs.io/)\n- [`httpcore`](https://www.encode.io/httpcore/)\n- [`trio-websocket`](https://trio-websocket.readthedocs.io/)\n\n## Usage\n\n```Python\nimport trio\n\nfrom trio_engineio.trio_client import EngineIoClient, EngineIoConnectionError\n\n\ndef on_connect():\n print(f\"***** Connected\")\n\n\ndef on_message(msg):\n print(f\"***** Received message: {msg}\")\n\n\ndef on_disconnect():\n print(f\"***** Disconnected\")\n\n \nasync def main():\n eio = EngineIoClient(logger=False)\n\n eio.on(\"connect\", on_connect)\n eio.on(\"message\", on_message)\n eio.on(\"disconnect\", on_disconnect)\n\n async with trio.open_nursery() as nursery:\n try:\n await eio.connect(nursery, \"http://127.0.0.1:1234\")\n except EngineIoConnectionError:\n return False\n return True\n\n\ntrio.run(main)\n```\n",
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