Python的Flask项目中获取请求用户IP地址addr问题

import logging
from flask import Flask, render_template, request

# Initialize the Flask application
app = Flask(__name__)

# Default route, print user's IP
@app.route('/')
def index():
     ip = request.remote_addr
     logging.debug(ip)
     return render_template('index.html', user_ip=ip)


if __name__ == '__main__':
     app.run(host="0.0.0.0", port=80)

import logging
from flask import Flask, render_template, request
from werkzeug.middleware.proxy_fix import ProxyFix

# Initialize the Flask application
app = Flask(__name__)
app.wsgi_app = ProxyFix(app.wsgi_app, num_proxies=1)


# Default route, print user's IP
@app.route('/')
def index():
     ip = request.remote_addr
     logging.debug(ip)
     return render_template('index.html', user_ip=ip)

#!/usr/bin/python
# -*- coding: UTF-8 -*-

from flask import Flask, JSONify, abort, request

app = Flask(__name__)

result = [
    { 
        "code":"001",
        "desc":"success",
        "data":1
    }
]

@app.route('/')
def hello_world():
    return 'Hello World!'

@app.route('/send/imgaddress', methods=['POST'])
def create_task():
    getdata = request.data.decode('utf-8')
    userImg = ''
    userdebugImg = ''
    userImg = request.values.get('user')
    userdebugImg = request.values.get('userdebug')
    print('userImg:', userImg)
    print('userdebugImg:', userdebugImg)
    result[0]["code"] = '001'
    return jsonify({'result': result})

if __name__ == "__main__":
    app.run(debug=True)

if __name__ == "__main__":
    app.run(host="0.0.0.0", debug=False)

app = Flask(__name__)

from flask_cors import CORS
app = Flask(__name__)
CORS(app, supports_credentials=True)