HTTP 507 Insufficient Storage (WebDAV)

Overview

The HTTP 507 Insufficient Storage status code is used in the Web Distributed Authoring and Versioning (WebDAV) protocol. It indicates that the server is unable to store the representation needed to complete the request because there’s not enough space on the server.

Purpose

The HTTP 507 response is sent by the server to inform the client that the request could not be completed due to insufficient storage space.

Usage

Client Behavior:

1. Send Request: The client sends a request that requires storage on the server.
2. Receive Response: The client receives an HTTP 507 status code if the server does not have sufficient storage.

Server Behavior:

1. Insufficient Storage: The server determines that it does not have enough storage to fulfill the request.
2. Send Response: The server sends a 507 Insufficient Storage response to the client.

Scenarios

• WebDAV Operations: Commonly encountered in WebDAV operations where space is insufficient to store the requested resource.

Sequence Diagram

Illustrating the process for an HTTP 507 response:

sequenceDiagram
    participant Client
    participant Server

    Note over Client: Step 1: Client sends a request requiring server storage
    Client->>Server: PUT /resource HTTP/1.1 (Step 1)

    Note over Server: Step 2: Server detects insufficient storage space
    Server-->>Client: HTTP/1.1 507 Insufficient Storage (Step 2)

Curl Request and Response Example

Sending a request using Curl that results in an insufficient storage response:

curl -i -X PUT --data-binary "@large_file.txt" http://example.com/resource
# Expected response: HTTP/1.1 507 Insufficient Storage

PHP cURL Request and Response Example

PHP script using cURL to handle a 507 Insufficient Storage response:

<?php
$ch = curl_init('http://example.com/resource');
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
curl_setopt($ch, CURLOPT_POSTFIELDS, file_get_contents('large_file.txt'));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
if (curl_getinfo($ch, CURLINFO_HTTP_CODE) == 507) {
    echo "Insufficient Storage";
}
curl_close($ch);
?>

Python Request and Response Example

Python script sending a request requiring storage and handling a 507 Insufficient Storage response:

import requests
response = requests.put('http://example.com/resource', data=open('large_file.txt', 'rb'))
if response.status_code == 507:
    print("Insufficient Storage")

Apache Configuration for HTTP 507 Insufficient Storage

Configuring Apache to handle 507 errors:

# Apache Configuration Example
ErrorDocument 507 "Insufficient Storage"

NGINX Configuration for HTTP 507 Insufficient Storage

NGINX configuration for handling 507 errors:

# NGINX Configuration Example
error_page 507 /507.html;
location = /507.html {
    internal;
    return 507 "Insufficient Storage";
}

HTTP 506 Variant Also Negotiates (Experimental) HTTP 508 Loop Detected (WebDAV)