How to Extract Visitor IP Addresses in a Flask Application?

Extracting Visitor IP Addresses in Python using Flask

Flask, a popular Python-based micro-framework, offers developers enhanced capabilities for web app development. One crucial aspect of web development involves recording the IP addresses of visitors for security or logging purposes. This article demonstrates how to accomplish this task using Flask.

Obtaining Visitor IP Addresses

To retrieve the IP addresses of visitors in Flask using Python, you can leverage the Request object, which provides access to essential request-related information. The remote_addr attribute of this object holds the IP address of the client making the request.

Example Implementation

The following Python code snippet illustrates how to retrieve visitor IP addresses in a Flask application:

<code class="python">from flask import request, jsonify

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

This code defines a route that returns the IP address of the visitor as a JSON response. The /get_my_ip route can be accessed using an HTTP GET request. Upon a request, the request object is automatically available, and the code retrieves the IP address via the request.remote_addr attribute.

Further Exploration

For more comprehensive information, refer to the Flask documentation on accessing the Request object. Additionally, the Werkzeug documentation provides detailed insights into the remote_addr attribute and the request handling process in Flask.

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