File size: 6,051 Bytes
5f341ab | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | // Copyright Epic Games, Inc. All Rights Reserved.
// This is the entrypoint to the stress test, all setup happens here
function stressTest() {
// This stress test creates a number of Pixel Streaming pages on the same page
// using iframes and then tries to auto-connect them.
// The purpose of the stress test is to automate testing a large number of peers
// connecting and disconnecting regularly from a single Unreal Engine streaming instance.
let self = this;
this.play = true;
this.maxPeers = 5;
this.totalStreams = 0;
this.streamCreationIntervalMs = 200;
this.streamDeletionIntervalMs = 2000;
this.pixelStreamingFrames = [];
this.creationIntervalHandle = null;
this.deletionIntervalHandle = null;
// Create a container to put the "Pixel Streaming" pages in.
let streamsContainer = document.getElementById("streamsContainer");
function startStressTest() {
setupNumPeersSlider();
startStreamCreation();
startStreamDeletion();
setupPlayPause();
document.getElementById("creationIntervalInput").addEventListener("change", function(){
self.streamCreationIntervalMs = document.getElementById("creationIntervalInput").value * 1000.0;
startStreamCreation();
});
document.getElementById("deletionIntervalInput").addEventListener("change", function(){
self.streamDeletionIntervalMs = document.getElementById("deletionIntervalInput").value * 1000.0;
startStreamDeletion();
});
}
function startStreamCreation() {
if(self.creationIntervalHandle) {
clearInterval(self.creationIntervalHandle);
}
// Create iframes of Pixel Streaming as a given interval (up to the max nPeers)
self.creationIntervalHandle = setInterval(function(){
if(self.play) {
let curNPeers = self.pixelStreamingFrames.length;
if(curNPeers >= self.maxPeers) {
return;
}
// Make a random amount of peers between 0 and up to max peers.
let maxPeersToCreate = self.maxPeers - curNPeers;
let nPeersToCreate = Math.ceil(Math.random() * maxPeersToCreate);
for(let i = 0; i < nPeersToCreate; i++) {
let frame = createPixelStreamingFrame();
let n = self.pixelStreamingFrames.length;
frame.id = "PixelStreamingFrame_" + (n + 1);
streamsContainer.append(frame);
self.pixelStreamingFrames.push(frame);
self.totalStreams += 1;
updateTotalStreams();
}
}
}, self.streamCreationIntervalMs);
}
function startStreamDeletion() {
if(self.deletionIntervalHandle) {
clearInterval(self.deletionIntervalHandle);
}
self.deletionIntervalHandle = setInterval(function(){
if(self.play) {
let curNPeers = self.pixelStreamingFrames.length;
if(curNPeers == 0) {
return;
}
// Delete a random amount of peers up to current number of peers
let nPeersToDelete = Math.ceil(Math.random() * curNPeers);
for(let i = 0; i < nPeersToDelete; i++) {
let frame = self.pixelStreamingFrames.shift();
frame.parentNode.removeChild(frame);
}
}
}, self.streamDeletionIntervalMs);
}
function updateTotalStreams() {
let nStreamsLabel = document.getElementById("nStreamsLabel");
nStreamsLabel.innerHTML = self.totalStreams;
}
function setupPlayPause() {
let playPauseBtn = document.getElementById("playPause");
playPauseBtn.addEventListener("click", () => {
if(self.play) {
self.play = false;
playPauseBtn.innerHTML = "Play"
} else {
self.play = true;
playPauseBtn.innerHTML = "Pause"
}
});
}
function setupNumPeersSlider() {
// Tie number of peers to the slider
let nPeersSlider = document.getElementById("nPeersSlider");
nPeersSlider.value = self.maxPeers;
let nPeersLabel = document.getElementById("nPeerLabel");
nPeersLabel.innerHTML = self.maxPeers;
// When the slide changes update the nPeers variable
nPeersSlider.addEventListener("change", function(){
self.maxPeers = nPeersSlider.value;
nPeersLabel.innerHTML = nPeersSlider.value;
});
}
function createPixelStreamingFrame() {
// Create an iframe that holds the Pixel Streaming page
let streamIFrame = document.createElement("iframe");
streamIFrame.src = "player.html";
streamIFrame.onload = function(){
let pixelStreamingJS = streamIFrame.contentWindow;
// Don't show the play button
pixelStreamingJS.connect_on_load = true;
pixelStreamingJS.shouldShowPlayOverlay = false;
// Create a hook for when webRTCPlayer is setup
let existingSetupPlayerFunc = pixelStreamingJS.setupWebRtcPlayer;
let newSetupPlayerFunc = function(htmlElement, config){
config.startVideoMuted = true;
config.autoPlayAudio = false;
let webrtcPlayer = existingSetupPlayerFunc(htmlElement, config);
return webrtcPlayer;
}
pixelStreamingJS.setupWebRtcPlayer = newSetupPlayerFunc;
pixelStreamingJS.connect();
}
return streamIFrame;
}
// Start here
startStressTest();
}
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