Crate host_api 

Host API — transport-agnostic engine for the Polkadot app host-api protocol.

Processes binary SCALE-encoded messages from Polkadot apps and returns binary responses. Works over any transport: WKWebView MessagePort, PolkaVM host calls, WebSocket, etc.

See HostApi::handle_message for the main entry point.

Modules

chain

Remote chain protocol methods (tags 76-103).

codec

Minimal SCALE codec for the Polkadot app host-api wire format.

protocol

Wire protocol for the Polkadot app host-api.

Structs

HostApi

Shared host implementation. Handles decoded requests, returns encoded responses.

Enums

HostApiOutcome

Outcome of processing a host-api message.

Constants

HOST_API_BRIDGE_SCRIPT

JavaScript injected before the Polkadot app loads. Sets up: