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send.html
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send.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width">
<title>Peer-to-Peer Cue System --- Sender</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<h1>Peer-to-Peer Cue System --- Sender</h1>
<table class="control">
<tr>
<td class="title">Status:</td>
<td class="title">Messages:</td>
</tr>
<tr>
<td>
<span style="font-weight: bold">ID: </span>
<input type="text" id="receiver-id" title="Input the ID from receive.html">
<button id="connect-button">Connect</button>
</td>
<td>
<input type="text" id="sendMessageBox" placeholder="Enter a message..." autofocus="true" />
<button type="button" id="sendButton">Send</button>
<button type="button" id="clearMsgsButton">Clear Msgs (Local)</button>
</td>
</tr>
<tr>
<td><div id="status" class="status"></div></td>
<td><div class="message" id="message"></div></td>
</tr>
<tr>
<td>
<button type="button" class="control-button" id="resetButton">Reset</button>
</td>
<td>
<button type="button" class="control-button" id="goButton">Go</button>
</td>
</tr>
<tr>
<td>
<button type="button" class="control-button" id="fadeButton">Fade</button>
</td>
<td>
<button type="button" class="control-button" id="offButton">Off</button>
</td>
</tr>
</table>
<script src="https://unpkg.com/peerjs@1.5.0/dist/peerjs.min.js"></script>
<script type="text/javascript">
(function () {
var lastPeerId = null;
var peer = null; // own peer object
var conn = null;
var recvIdInput = document.getElementById("receiver-id");
var status = document.getElementById("status");
var message = document.getElementById("message");
var goButton = document.getElementById("goButton");
var resetButton = document.getElementById("resetButton");
var fadeButton = document.getElementById("fadeButton");
var offButton = document.getElementById("offButton");
var sendMessageBox = document.getElementById("sendMessageBox");
var sendButton = document.getElementById("sendButton");
var clearMsgsButton = document.getElementById("clearMsgsButton");
var connectButton = document.getElementById("connect-button");
var cueString = "<span class=\"cueMsg\">Cue: </span>";
/**
* Create the Peer object for our end of the connection.
*
* Sets up callbacks that handle any events related to our
* peer object.
*/
function initialize() {
// Create own peer object with connection to shared PeerJS server
peer = new Peer(null, {
debug: 2
});
peer.on('open', function (id) {
// Workaround for peer.reconnect deleting previous id
if (peer.id === null) {
console.log('Received null id from peer open');
peer.id = lastPeerId;
} else {
lastPeerId = peer.id;
}
console.log('ID: ' + peer.id);
});
peer.on('connection', function (c) {
// Disallow incoming connections
c.on('open', function() {
c.send("Sender does not accept incoming connections");
setTimeout(function() { c.close(); }, 500);
});
});
peer.on('disconnected', function () {
status.innerHTML = "Connection lost. Please reconnect";
console.log('Connection lost. Please reconnect');
// Workaround for peer.reconnect deleting previous id
peer.id = lastPeerId;
peer._lastServerId = lastPeerId;
peer.reconnect();
});
peer.on('close', function() {
conn = null;
status.innerHTML = "Connection destroyed. Please refresh";
console.log('Connection destroyed');
});
peer.on('error', function (err) {
console.log(err);
alert('' + err);
});
};
/**
* Create the connection between the two Peers.
*
* Sets up callbacks that handle any events related to the
* connection and data received on it.
*/
function join() {
// Close old connection
if (conn) {
conn.close();
}
// Create connection to destination peer specified in the input field
conn = peer.connect(recvIdInput.value, {
reliable: true
});
conn.on('open', function () {
status.innerHTML = "Connected to: " + conn.peer;
console.log("Connected to: " + conn.peer);
// Check URL params for comamnds that should be sent immediately
var command = getUrlParam("command");
if (command)
conn.send(command);
});
// Handle incoming data (messages only since this is the signal sender)
conn.on('data', function (data) {
addMessage("<span class=\"peerMsg\">Peer:</span> " + data);
});
conn.on('close', function () {
status.innerHTML = "Connection closed";
});
};
/**
* Get first "GET style" parameter from href.
* This enables delivering an initial command upon page load.
*
* Would have been easier to use location.hash.
*/
function getUrlParam(name) {
name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
var regexS = "[\\?&]" + name + "=([^&#]*)";
var regex = new RegExp(regexS);
var results = regex.exec(window.location.href);
if (results == null)
return null;
else
return results[1];
};
/**
* Send a signal via the peer connection and add it to the log.
* This will only occur if the connection is still alive.
*/
function signal(sigName) {
if (conn && conn.open) {
conn.send(sigName);
console.log(sigName + " signal sent");
addMessage(cueString + sigName);
} else {
console.log('Connection is closed');
}
}
goButton.addEventListener('click', function () {
signal("Go");
});
resetButton.addEventListener('click', function () {
signal("Reset");
});
fadeButton.addEventListener('click', function () {
signal("Fade");
});
offButton.addEventListener('click', function () {
signal("Off");
});
function addMessage(msg) {
var now = new Date();
var h = now.getHours();
var m = addZero(now.getMinutes());
var s = addZero(now.getSeconds());
if (h > 12)
h -= 12;
else if (h === 0)
h = 12;
function addZero(t) {
if (t < 10)
t = "0" + t;
return t;
};
message.innerHTML = "<br><span class=\"msg-time\">" + h + ":" + m + ":" + s + "</span> - " + msg + message.innerHTML;
};
function clearMessages() {
message.innerHTML = "";
addMessage("Msgs cleared");
};
// Listen for enter in message box
sendMessageBox.addEventListener('keypress', function (e) {
var event = e || window.event;
var char = event.which || event.keyCode;
if (char == '13')
sendButton.click();
});
// Send message
sendButton.addEventListener('click', function () {
if (conn && conn.open) {
var msg = sendMessageBox.value;
sendMessageBox.value = "";
conn.send(msg);
console.log("Sent: " + msg);
addMessage("<span class=\"selfMsg\">Self: </span> " + msg);
} else {
console.log('Connection is closed');
}
});
// Clear messages box
clearMsgsButton.addEventListener('click', clearMessages);
// Start peer connection on click
connectButton.addEventListener('click', join);
// Since all our callbacks are setup, start the process of obtaining an ID
initialize();
})();
</script>
</body>
</html>