🤖 Overview

Shareaza is an open‑source multi‑network peer‑to‑peer client developed by the Shareaza Development Team, first released in 2004. Beyond file sharing, the software includes a built‑in web crawler component that discovers downloadable files by crawling public web pages and Gnutella web caches. Its crawling activity feeds metadata into Shareaza’s search index and aids in locating file sources across the Gnutella, eDonkey, and BitTorrent networks.

🌐 Technical Behavior

Shareaza’s crawler performs HTTP GET requests to web servers, parsing HTML for hyperlinks and file references. Requests typically originate from dynamic IP ranges associated with residential and commercial ISPs, as the client runs on end‑user devices. The crawler employs multiple simultaneous connections and can send rapid‑fire requests to a single domain within a short time window, especially when scanning web cache directories. It uses HTTP/1.1 with persistent connections and may include a Referer header pointing to the previously crawled page. The crawler does not implement a fixed crawl delay; instead, its request frequency depends on the user’s configuration and the number of active file searches. Source: Shareaza project page and GitHub repository.

📋 robots.txt Compliance

Shareaza’s web crawler does not natively read or honour robots.txt directives. The Shareaza wiki and source code show no logic for parsing or obeying Disallow rules, as the crawler was designed solely to locate file links, not to index general web content. Consequently, webmasters cannot rely on robots.txt to control Shareaza’s crawling; blocking must be implemented through other means such as User‑Agent filtering or IP‑based rate limiting.

🔍 Detection Indicators

The default User‑Agent string is "Shareaza/2.7.0.0" (version may vary), though rarely it may present as "Mozilla/5.0 (compatible; Shareaza)". Additional identifying headers include a X‑Shareaza‑Session header in some versions. Behavioural fingerprints include a high volume of requests for .exe, .zip, and .rar file extensions, often with multi‑segment ranges. The crawler also frequently sends requests to /cgi‑bin/ paths associated with web caches.

📊 Data Usage

Collected data—URLs of downloadable files and associated metadata—is used to populate Shareaza’s local search index and to query the Gnutella network for active sources. This enables the client to offer its users a distributed file‑search capability. Data is not used for AI training or commercial analytics; it remains within the P2P ecosystem.

⚙️ Rate Limiting Policy

Shareaza is rate‑limited because its unregulated crawling can degrade server performance and consume bandwidth. Threshold‑based blocking is justified by the crawler’s lack of built‑in politeness and its potential to generate thousands of requests per minute.

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