<!doctype html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Testing bufferedAmountLowThreashold default RTCDataChannel attribute and event</title>
    <script src="../../resources/testharness.js"></script>
    <script src="../../resources/testharnessreport.js"></script>
  </head>
  <body>
    <script src ="../routines.js"></script>
    <script>
window.addEventListener("unhandledrejection", event => {
    event.preventDefault();
});

var localChannel;
var remoteChannel;

function closeDataChannels() {
    localChannel.close();
    remoteChannel.close();
    closeConnections();
}

var longString = "abcdefgh";
for (var cptr = 0; cptr < 14; ++cptr)
    longString += longString;

function sendMessages(channel)
{
    while(channel.bufferedAmount < 1000)
        channel.send(longString);
}

function receiveMessages(event) {
    if (++counter === 1)
        return;
}

promise_test((test) => {
    counter = 0;
    var gotEvent = false;
    return new Promise((resolve, reject) => {
        createConnections((localConnection) => {
            localChannel = localConnection.createDataChannel('sendDataChannel');
            localChannel.onopen = () => { sendMessages(localChannel); };
            localChannel.onbufferedamountlow = () => {
                resolve();
            }
            assert_equals(localChannel.bufferedAmountLowThreshold, 0, "default bufferedAmountLowThreshold value");
        }, (remoteConnection) => {
            remoteConnection.ondatachannel = (event) => {
                remoteChannel = event.channel;
                remoteChannel.onmessage = receiveMessages;
            };
        });
        setTimeout(() => reject('timed out'), 5000);
    }).then (() => {
        closeDataChannels();
    });
}, "Default buffer threshold");

    </script>
  </body>
</html>