Flask开发碰到的socket.error: [Errno 10053]

墨蓝 2022-07-15 00:14 307阅读 0赞

最近写一个小程序检测http服务器是否可以访问

import requests
    from flask import request
    from flask import Flask
    
    
    app = Flask(__name__)
    session = requests.session()
    
    @app.route('/')
    def index():
        return "404..."
    
    @app.route('/isalive/<ip>')
    def create_task(ip):
        isalive = request(ip)
        if isalive:
            return '{"ip":"%s","isalive":%s}'%(ip, 1)
        else:
            return '{"ip":"%s","isalive":%s}'%(ip, 0)
    
    
    def request(ip):
            url = "http://" + ip
            # if "localhost" in url or '127.0.0.1' in url:
            # return True
            session.head(url,timeout=3)
            return True
    
    
    if __name__ == '__main__':
        while True:
            app.run(host='0.0.0.0')

运行以后访问[http://127.0.0.1:5000/isalive/127.0.0.1:5000][http_127.0.0.1_5000_isalive_127.0.0.1_5000] 报错（我把所有的异常去掉）

* Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
    [2016-10-26 11:24:58,490] ERROR in app: Exception on /isalive/192.168.3.89:5000 [GET]
    Traceback (most recent call last):
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\flask\app.py", line 1988, in wsgi_app
        response = self.full_dispatch_request()
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\flask\app.py", line 1641, in full_dispatch_request
        rv = self.handle_user_exception(e)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\flask\app.py", line 1544, in handle_user_exception
        reraise(exc_type, exc_value, tb)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\flask\app.py", line 1639, in full_dispatch_request
        rv = self.dispatch_request()
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\flask\app.py", line 1625, in dispatch_request
        return self.view_functions[rule.endpoint](**req.view_args)
      File "apps.py", line 23, in create_task
        isalive = request(ip)
      File "apps.py", line 34, in request
        session.head(url,timeout=3)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\requests\sessions.py", line 507, in head
        return self.request('HEAD', url, **kwargs)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\requests\sessions.py", line 475, in request
        resp = self.send(prep, **send_kwargs)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\requests\sessions.py", line 585, in send
        r = adapter.send(request, **kwargs)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\requests\adapters.py", line 479, in send
        raise ReadTimeout(e, request=request)
    ReadTimeout: HTTPConnectionPool(host='192.168.3.89', port=5000): Read timed out. (read timeout=3)
    192.168.3.89 - - [26/Oct/2016 11:24:58] "GET /isalive/192.168.3.89:5000 HTTP/1.1" 500 -
    192.168.3.89 - - [26/Oct/2016 11:24:58] "HEAD / HTTP/1.1" 200 -
    Traceback (most recent call last):
      File "apps.py", line 40, in <module>
        app.run(host='0.0.0.0')
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\flask\app.py", line 843, in run
        run_simple(host, port, self, **options)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\werkzeug\serving.py", line 694, in run_simple
        inner()
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\werkzeug\serving.py", line 659, in inner
        srv.serve_forever()
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\site-packages\werkzeug\serving.py", line 499, in serve_forever
        HTTPServer.serve_forever(self)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\SocketServer.py", line 233, in serve_forever
        self._handle_request_noblock()
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\SocketServer.py", line 292, in _handle_request_noblock
        self.handle_error(request, client_address)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\SocketServer.py", line 290, in _handle_request_noblock
        self.process_request(request, client_address)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\SocketServer.py", line 318, in process_request
        self.finish_request(request, client_address)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\SocketServer.py", line 331, in finish_request
        self.RequestHandlerClass(request, client_address, self)
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\SocketServer.py", line 654, in __init__
        self.finish()
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\SocketServer.py", line 713, in finish
        self.wfile.close()
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\socket.py", line 283, in close
        self.flush()
      File "C:\Users\user-admin\AppData\Local\Continuum\Anaconda2\lib\socket.py", line 307, in flush
        self._sock.sendall(view[write_offset:write_offset+buffer_size])
    socket.error: [Errno 10053]

经过搜索发现错误原因是Flask 自带的开发服务器是单线程，[http://127.0.0.1:5000/isalive/127.0.0.1:5000][http_127.0.0.1_5000_isalive_127.0.0.1_5000] 向服务器请求了两次，结果一直等待。实际上生产环境不会有这个问题

[http_127.0.0.1_5000_isalive_127.0.0.1_5000]: http://127.0.0.1:5000/isalive/127.0.0.1:5000