test_webtransport_stop_sending.js

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//

// Regression test for bug 2043946: STOP_SENDING with H3_NO_ERROR (0x100) on a

// server-initiated WebTransport stream must be handled gracefully.

//

/* import-globals-from head_webtransport.js */

"use strict";

var h3Port;

var host;

registerCleanupFunction(async () => {

  Services.prefs.clearUserPref("network.dns.localDomains");

  Services.prefs.clearUserPref(

    "network.http.http3.alt-svc-mapping-for-testing"

);

});

add_task(async function setup() {

  await http3_setup_tests("h3");

  h3Port = Services.env.get("MOZHTTP3_PORT");

  Assert.notEqual(h3Port, null);

  Assert.notEqual(h3Port, "");

  host = "foo.example.com:" + h3Port;

});

add_task(async function test_wt_stop_sending_no_error() {

  let webTransport = NetUtil.newWebTransport().QueryInterface(

    Ci.nsIWebTransport

);

  let listener = new WebTransportListener().QueryInterface(

    Ci.WebTransportSessionEventListener

);

  let pReady = new Promise(resolve => {

    listener.ready = resolve;

});

  // The server opens a server-initiated bidi stream and, in a later flight,

  // sends STOP_SENDING(H3_NO_ERROR) on it. Resolve once that is delivered.

  let pStopSending = new Promise(resolve => {

    listener.stopSending = resolve;

});

  // We don't act on the incoming stream, but a handler must exist since

  // onIncomingBidirectionalStreamAvailable calls it.

  listener.streamAvailable = () => {};

  webTransport.asyncConnect(

    NetUtil.newURI(`https://${host}/create_bidi_stream_and_stop_sending`),

    true,

[],

    Services.scriptSecurityManager.getSystemPrincipal(),

    Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL,

    listener

);

  await pReady;

  await pStopSending;

  Assert.ok(true, "STOP_SENDING(H3_NO_ERROR) was handled");

  webTransport.closeSession(0, "");

});