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<!DOCTYPE html>
<meta charset="utf-8">
<title>Sending a message through PresentationConnection</title>
<link rel="author" title="Tomoyuki Shimizu" href="https://github.com/tomoyukilabs/">
<link rel="help" href="http://w3c.github.io/presentation-api/#sending-a-message-through-presentationconnection">
<script src="../common.js"></script>
<script src="stash.js"></script>
<script>
const stash = new Stash(stashIds.toReceiver, stashIds.toController);
navigator.presentation.receiver.connectionList.then(list => {
const connection = list.connections[0];
const message1 = '1st';
const message2 = '2nd';
const message3 = new Uint8Array([51, 114, 100]); // "3rd"
const message4 = new Uint8Array([52, 116, 104]); // "4th"
const message5 = new Uint8Array([108, 97, 115, 116]); // "last"
// send messages
return stash.receive().then(() => {
connection.send(message1); // string
connection.send(message2); // string
connection.send(new Blob([message3])); // Blob
connection.send(message4.buffer); // ArrayBuffer
connection.send(message5); // ArrayBufferView
return stash.receive();
}).then(() => {
// try to send a message in the "closed" state
// Note: a receiving user agent does not fire a "terminate" event
connection.close();
connection.onclose = () => {
try {
connection.send(message1);
stash.send(JSON.stringify({ type: 'ok' }));
} catch (e) {
stash.send(JSON.stringify({ type: 'error', name: e.name, message: e.message }));
}
};
});
});
</script>
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