连接我的IP地址到瓶服务器错误 - Ubuntu的ipython

Question

我想连接我自己的服务器与亚马逊ec 2实例创建的IP地址。但是，每当我把这个代码，我得到一个错误消息。代码是：

from flask import Flask, request 


visitor_counter = 0 
webserver = Flask("MyFirstWebServer") 

import datetime 
import time 

@webserver.route('/') 
def hello_world(): 
    # stop_server() 
    return 'Hello James, it is now ' + str(datetime.date.today()) 


@webserver.route('/testSU') 
def hello_su(): 
    # stop_server() 
    global visitor_counter 
    visitor_counter += 1 
    return 'Hello! You are visitor #{i}'.format(i=visitor_counter) 

def start_server(): 
    global visitor_counter 
    visitor_counter = 0 
    webserver.run(host='aaa.bbb.cc.ddd', port=5000) 
    return 

def stop_server(): 
    shutdown_after_request = request.environ.get('werkzeug.server.shutdown') 
    shutdown_after_request() 
    return 

start_server() 

我得到的错误消息是“OSError：[Errno 99]无法分配请求的地址”。这是错误信息的细节，我得到当我运行python的笔记本：

OSError         Traceback (most recent call last) 
<ipython-input-4-2dda11743df7> in <module>() 
----> 1 start_server() 

<ipython-input-1-dcbe603433f4> in start_server() 
    30  global visitor_counter 
    31  visitor_counter = 0 
---> 32  webserver.run(host='aaa.bbb.cc.ddd', port=5000) 
    33  return 
    34 

/usr/local/lib/python3.5/dist-packages/flask/app.py in run(self, host, port, debug, **options) 
    839   options.setdefault('use_debugger', self.debug) 
    840   try: 
--> 841    run_simple(host, port, self, **options) 
    842   finally: 
    843    # reset the first request information if the development server 

/usr/local/lib/python3.5/dist-packages/werkzeug/serving.py in run_simple(hostname, port, application, use_reloader, use_debugger, use_evalex, extra_files, reloader_interval, reloader_type, threaded, processes, request_handler, static_files, passthrough_errors, ssl_context) 
    706       reloader_type) 
    707  else: 
--> 708   inner() 
    709 
    710 

/usr/local/lib/python3.5/dist-packages/werkzeug/serving.py in inner() 
    668       processes, request_handler, 
    669       passthrough_errors, ssl_context, 
--> 670       fd=fd) 
    671   if fd is None: 
    672    log_startup(srv.socket) 

/usr/local/lib/python3.5/dist-packages/werkzeug/serving.py in make_server(host, port, app, threaded, processes, request_handler, passthrough_errors, ssl_context, fd) 
    562  else: 
    563   return BaseWSGIServer(host, port, app, request_handler, 
--> 564        passthrough_errors, ssl_context, fd=fd) 
    565 
    566 

/usr/local/lib/python3.5/dist-packages/werkzeug/serving.py in __init__(self, host, port, app, handler, passthrough_errors, ssl_context, fd) 
    474          socket.SOCK_STREAM) 
    475    port = 0 
--> 476   HTTPServer.__init__(self, (host, int(port)), handler) 
    477   self.app = app 
    478   self.passthrough_errors = passthrough_errors 

/usr/lib/python3.5/socketserver.py in __init__(self, server_address, RequestHandlerClass, bind_and_activate) 
    438   if bind_and_activate: 
    439    try: 
--> 440     self.server_bind() 
    441     self.server_activate() 
    442    except: 

/usr/lib/python3.5/http/server.py in server_bind(self) 
    136  def server_bind(self): 
    137   """Override server_bind to store the server name.""" 
--> 138   socketserver.TCPServer.server_bind(self) 
    139   host, port = self.socket.getsockname()[:2] 
    140   self.server_name = socket.getfqdn(host) 

/usr/lib/python3.5/socketserver.py in server_bind(self) 
    452   if self.allow_reuse_address: 
    453    self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) 
--> 454   self.socket.bind(self.server_address) 
    455   self.server_address = self.socket.getsockname() 
    456 

我使用的终端，看看是否有任何其他的服务器/程序上的5000端口开放，却没有一个。 。这可能是我的问题吗？

Answer 1

此代码对我的作品尝试一下

import os 
from flask import Flask 


__author__ = 'Rajshekhar Horatti' 
app = Flask(__name__) 
APP_ROOT = os.path.dirname(os.path.abspath(__file__)) 

@app.route("/") 
def main(): 
    return "hello world" 



if __name__ == "__main__": 
    app.run(host='0.0.0.0', port=8080, debug=True) 

主机应host = 0.0.0.0，并检查了您已激活的端口andassign端口