我试图在sanic的Python 3.6应用程序中使用异步原始套接字
真的很惊讶，来自curio的异步函数在sanic异步上下文中不起作用。最小的概念证明：
import curio
from sanic import Sanic
from sanic.response import text
app = Sanic(__name__)
@app.route('/')
async def index(request):
sock = await curio.open_connection("google.com", 443, ssl=True)
resp = await sock.recv(1024)
return text(resp)
app.run(host="0.0.0.0", port=5001)
此代码可在任何http请求上生成核心转储
$ python3 test2.py
2017-04-17 17:33:13,266: INFO: Goin' Fast @ http://0.0.0.0:5001
2017-04-17 17:33:13,270: INFO: Starting worker [93060]
Fatal Python error: GC object already tracked
Current thread 0x00007fc57706e480 (most recent call first):
File "/usr/lib/python3.6/linecache.py", line 165 in lazycache
File "/usr/lib/python3.6/traceback.py", line 345 in extract
File "/usr/lib/python3.6/traceback.py", line 497 in __init__
File "/usr/lib/python3.6/traceback.py", line 117 in format_exception
File "/usr/lib/python3.6/traceback.py", line 163 in format_exc
File "/usr/lib/python3.6/site-packages/sanic/handlers.py", line 93 in default
File "/usr/lib/python3.6/site-packages/sanic/handlers.py", line 70 in response
File "/usr/lib/python3.6/site-packages/sanic/app.py", line 472 in handle_request
File "/usr/lib/python3.6/site-packages/sanic/server.py", line 410 in serve
File "/usr/lib/python3.6/site-packages/sanic/app.py", line 561 in run
File "test2.py", line 14 in <module>
Aborted (core dumped)
最佳答案
为了将这个问题与github问题联系起来，OP提出了这一点。
Using curio in sanic controller。
总结（来自问题评论）：
来自官方的Curio文档：
“ Curio还可以将工作提交到asyncio事件循环，条件是它必须在不同的线程中单独运行。”
Look at this issue
Curio事件的主要实现是队列，而不是事件循环。您正试图在运行Sanic的同一线程（和事件循环）中生成任务。