aria2/aria2

Features

• BitTorrent Engines - Implements a peer-to-peer transfer engine that handles distributed hash tables and local peer discovery.
• Multi-Protocol Clients - Retrieve files from multiple sources and protocols simultaneously to maximize bandwidth utilization and ensure data integrity across different network environments.
• Segmented Downloaders - Splits files into smaller chunks retrieved concurrently across different network protocols to maximize total bandwidth utilization and transfer speed.
• Download Managers - Retrieves files from multiple sources and protocols simultaneously to maximize bandwidth utilization.
• Peer-to-Peer Transfer Engines - Manages complex BitTorrent transfers with support for peer discovery and selective file downloading.
• Network Transfer Managers - Route traffic through proxy servers and verify file integrity using checksums across multiple protocols to ensure secure and accurate data movement.
• Peer-to-Peer Clients - Handle peer-to-peer downloads with support for distributed hash tables and local peer discovery while maintaining custom directory structures and selective file downloads.
• Concurrency Models - Processes network I/O and download lifecycle events through a non-blocking loop to manage multiple concurrent transfers efficiently.
• Multi-Protocol Downloaders - Downloads files from HTTP, FTP, and BitTorrent sources simultaneously to maximize bandwidth.
• Transfer State Persistence - Tracks piece availability and file length to enable seamless resumption of interrupted downloads.
• Formal Verification Tools - Validates individual data segments against checksums during the download process to ensure file accuracy before final assembly.
• Download Managers - Lightweight multi-protocol command-line download utility.
• Downloading and Serving - Multi-protocol and multi-source command-line download utility.
• Remote Control Interfaces - Exposes programmatic management of download queues and task monitoring through standard procedure call protocols.
• Remote Procedure Call Interfaces - Exposes internal download management functions via standard network protocols to allow external applications to control and monitor tasks.
• Remote Management Tools - Manage download tasks programmatically using network interfaces or by running the utility as a background process to maintain control from any location.
• Data Validation Libraries - Ensures accurate and uninterrupted file downloads by automatically verifying data integrity.
• State Persistence - Records download progress and peer routing tables in local binary files to enable seamless resumption of interrupted network transfers.
• Transfer Orchestration - Streamlines data handling pipelines by orchestrating automated workflows around file transfers.
• Access Control Systems - Secure remote procedure call access by requiring a secret authorization token for all method calls to prevent unauthorized access and potential security threats.
• Download Libraries - Manage file downloads by initializing sessions, setting up event callbacks, and controlling the full lifecycle of data transfers through a unified interface.
• Remote Management Tools - Allows programmatic control and monitoring of background file transfer tasks through network interfaces.
• Selective Downloaders - Inspect file contents within multi-file archives and download specific items by index to optimize bandwidth usage and save local storage space.
• Task Schedulers - Submit new download requests by providing resource addresses, configuration settings, and queue positioning via standard remote procedure call methods.
• Authentication Strategies - Protects remote control interfaces using authentication tokens to allow external applications to manage, pause, and monitor download queues safely over a network.

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