如果你在其他平衡器后面使用Nginx，例如AWS Application balancer, HTTP_X_FORWARDED_FOR会返回地址列表。可以这样固定:

if 'X-Forwarded-For' in request.headers:
    proxy_data = request.headers['X-Forwarded-For']
    ip_list = proxy_data.split(',')
    user_ip = ip_list[0]  # first address in list is User IP
else:
    user_ip = request.remote_addr  # For local development

我有Nginx和下面的Nginx配置:

server {
    listen 80;
    server_name xxxxxx;
    location / {
               proxy_set_header   Host                 $host;
               proxy_set_header   X-Real-IP            $remote_addr;
               proxy_set_header   X-Forwarded-For      $proxy_add_x_forwarded_for;
               proxy_set_header   X-Forwarded-Proto    $scheme;

               proxy_pass http://x.x.x.x:8000;
        }
}

@tirtha-r解决方案对我有用

#!flask/bin/python
from flask import Flask, jsonify, request
app = Flask(__name__)

@app.route('/', methods=['GET'])
def get_tasks():
    if request.environ.get('HTTP_X_FORWARDED_FOR') is None:
        return jsonify({'ip': request.environ['REMOTE_ADDR']}), 200
    else:
        return jsonify({'ip': request.environ['HTTP_X_FORWARDED_FOR']}), 200

if __name__ == '__main__':
    app.run(debug=True,host='0.0.0.0', port=8000)

我的请求与回应:

curl -X GET http://test.api

{
    "ip": "Client Ip......"
}

实际上，你会发现，当简单地获取以下信息时，你会得到服务器的地址:

request.remote_addr

如果你想要客户端的IP地址，那么使用下面的方法:

request.environ['REMOTE_ADDR']

下面的代码总是给出客户端的公共IP(而不是代理背后的私有IP)。

from flask import request

if request.environ.get('HTTP_X_FORWARDED_FOR') is None:
    print(request.environ['REMOTE_ADDR'])
else:
    print(request.environ['HTTP_X_FORWARDED_FOR']) # if behind a proxy

请参阅文档，了解如何访问Request对象，然后从同一个Request对象获取属性remote_addr。

代码示例

from flask import request
from flask import jsonify

@app.route("/get_my_ip", methods=["GET"])
def get_my_ip():
    return jsonify({'ip': request.remote_addr}), 200

有关更多信息，请参阅Werkzeug文档。

用户的IP地址可以使用以下片段检索:

from flask import request
print(request.remote_addr)