Server response 300 Multiple Choices

HTTP Status Code 300: Multiple Choices

The HTTP status code 300 indicates that multiple options are available for the requested resource. This status code serves to inform the client about different available resources that match its request. In this article, we will explore how this status code operates in practice and how to handle it in various programming languages.

Use Cases for HTTP Status 300

Here are some scenarios where the 300 status code is applicable:

1. Scenario with Multiple Versions of a Resource

   Example: A request for an image that has various formats available (JPEG, PNG, GIF).

   Implementation: The server responds with status 300 and a list of available formats.

2. Scenario with Content Localization

   Example: A request to a website that supports multiple languages (e.g., Russian, English, Spanish).

   Implementation: The server returns status 300 with language options.

3. Scenario with Different Content Types

   Example: A request to an API that can return data in various formats (JSON, XML, CSV).

   Implementation: The server sends a response with status 300, listing the available formats.

Handling 300 Status Code in Different Programming Languages

Understanding how to implement the 300 status code in various programming languages is crucial for effective API development. Below are examples for JavaScript, Python, and PHP.

const express = require('express');
const app = express();

app.get('/resource', (req, res) => {
    const choices = [
        { format: 'image/jpeg', url: 'http://example.com/image.jpg' },
        { format: 'image/png', url: 'http://example.com/image.png' },
        { format: 'image/gif', url: 'http://example.com/image.gif' },
    ];
    res.status(300).json(choices);
});

app.listen(3000, () => console.log('Server running on port 3000'));
            

from flask import Flask, jsonify

app = Flask(__name__)

@app.route('/resource')
def resource():
    choices = [
        {'format': 'image/jpeg', 'url': 'http://example.com/image.jpg'},
        {'format': 'image/png', 'url': 'http://example.com/image.png'},
        {'format': 'image/gif', 'url': 'http://example.com/image.gif'},
    ]
    return jsonify(choices), 300

if __name__ == '__main__':
    app.run(port=5000)
            

<?php
header("HTTP/1.1 300 Multiple Choices");
$choices = [
    ['format' => 'image/jpeg', 'url' => 'http://example.com/image.jpg'],
    ['format' => 'image/png', 'url' => 'http://example.com/image.png'],
    ['format' => 'image/gif', 'url' => 'http://example.com/image.gif'],
];
echo json_encode($choices);
?>
            

In summary, the 300 (Multiple Choices) status code can be very helpful in providing clients with information about available resource options. Properly handling this code enhances user experience and minimizes confusion. Using the examples provided, developers can implement this status code effectively across different programming languages.