WormHoleSharp
A C# library for passing data and commands between iOS apps and their extensions using shared App Groups.
Overview
WormholeSharp is a C# port of MMWormhole, designed to facilitate communication between an iOS application and its extensions, such as widgets or Watch apps. It enables the passing of serializable messages through shared App Group directories, simulating interprocess communication where direct IPC is not available. The library supports real-time notifications via CFNotificationCenter to provide nearly instant updates when messages are sent.
Key Features
- Message Passing — Send and receive serializable objects (like JSON) between an app and its extensions using unique identifiers.
- File-Based Communication — Messages are archived to files within a shared App Group, ensuring persistence even when apps are not running.
- Realtime Notifications — Leverages Darwin Notifications to trigger immediate updates on either side of the communication channel.
- Simple API — Offers straightforward methods for passing messages, listening for changes, and retrieving stored messages.
- Flexible Serialization — Uses Json.Net by default but allows easy swapping with other serialization libraries.
Philosophy
WormholeSharp emphasizes simplicity and reliability in bridging iOS apps and extensions, treating communication like shared mailboxes where messages are delivered based on identifiers and can be picked up asynchronously.
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