SDKsWASM

Receive custom business messages

Listen for custom business notifications delivered by the server through the WASM SDK.

CbEvents.OnRecvCustomBusinessMessage delivers business notifications from the server. Its payload is not a MessageItem. Ordinary custom chat messages still arrive through the new-message events.

function handleCustomBusinessMessage({ data }) {
  const payload = parseAndValidateBusinessPayload(data);
  applyBusinessPayload(payload);
}

openimsdk.on(
  CbEvents.OnRecvCustomBusinessMessage,
  handleCustomBusinessMessage,
);

function removeCustomBusinessMessageListener() {
  openimsdk.off(
    CbEvents.OnRecvCustomBusinessMessage,
    handleCustomBusinessMessage,
  );
}

Keep a stable reference to the handler function. Update state by a stable ID or idempotency key in the business payload; do not deduplicate by arrival order or array position.

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