whisper chat demo

chat.js

var chat = {
	username:     "<not set>",
	topic:        "0xfeedbabe",
	key:          "",
	identity:     "",
	pollInterval: null,
	filter:       null,
	
	setUsername: function(name) {
		this.username = name;
		return true;
	},
	
	join: function(password) {
		// create key from shared secret
		this.key = shh.generateSymKeyFromPassword(password);

		// create pub/priv key for identity
		this.identity = shh.newKeyPair();

		pubKey = shh.publicKey(this.identity);
		console.log("identity", pubKey.substr(2, 8));

		// create message filter (console doesn't support subscriptions)
		this.filter = shh.newMessageFilter({
			symKeyID: this.key,
			topics:   [this.topic],
		});
		
		// poll for new messages
		me = this;
		this.pollInterval = setInterval(function() {
			me.pollMessages()
		}, 1000);

		this.say("joined");

		return true;
	},
	
	pollMessages: function() {
		messages = shh.getFilterMessages(this.filter);
		for (i = 0; i < messages.length; i++) {
			printMessage(messages[i], this.username);
		}
	}
	
	say: function(text) {
		message = {
			symKeyId: this.key,
			topic: this.topic,
			payload: web3.toHex(this.username + ": " + text),
			powTime: 5,
			powTarget: shh.info.minPow,
			sig: this.identity
		};

		return shh.post(message);
	}
	
	leave: function() {
		shh.deleteMessageFilter(this.filter);
		clearInterval(this.pollInterval);
		this.say("left...")
		console.log("chat room left");
		return true;
	},
}

// start helper functions
function time(message) {
	date = new Date(message.timestamp * 1000);
	hours = date.getHours();
	minutes = "0" + date.getMinutes();
	seconds = "0" + date.getSeconds();

	return hours + ':' + minutes.substr(-2) + ':' + seconds.substr(-2);
}

function sender(message) {
	return message.sig.substr(2, 8)
}

function printMessage(message, myUsername) {
	line = web3.toAscii(message.payload);
	parts = line.split(":");
	name = parts[0]
	if (name !== myUsername) {
		console.log("[" + time(message) + " " + name + "/" + sender(message) + "]" + parts.slice(1).join(":"));
	}
}
// end helper functions

console.log("Supported functions:");
console.log("* chat.setUsername(<name:string>)");
console.log("* chat.join(<password:string>)");
console.log("* chat.leave()");
console.log("* chat.say(<message:string>)");
console.log();

 

frozeman/chat.jsforked from bas-vk/chat

whisper chat demo

Raw

 chat.js

var chat = { username: "", topic: "0xfeedbabe", key: "", identity: "", pollInterval: null, filter: null, setUsername: function(name) { this.username = name; return true; }, join: function(password) { // create key from shared secret this.key = shh.generateSymKeyFromPassword(password); // create pub/priv key for identity this.identity = shh.newKeyPair(); pubKey = shh.publicKey(this.identity); console.log("identity", pubKey.substr(2, 8)); // create message filter (console doesn't support subscriptions) this.filter = shh.newMessageFilter({ symKeyID: this.key, topics: [this.topic], }); // poll for new messages me = this; this.pollInterval = setInterval(function() { me.pollMessages() }, 1000); this.say("joined"); return true; }, pollMessages: function() { messages = shh.getFilterMessages(this.filter); for (i = 0; i < messages.length; i++) { printMessage(messages[i], this.username); } } say: function(text) { message = { symKeyId: this.key, topic: this.topic, payload: web3.toHex(this.username + ": " + text), powTime: 5, powTarget: shh.info.minPow, sig: this.identity }; return shh.post(message); } leave: function() { shh.deleteMessageFilter(this.filter); clearInterval(this.pollInterval); this.say("left...") console.log("chat room left"); return true; },} // start helper functionsfunction time(message) { date = new Date(message.timestamp * 1000); hours = date.getHours(); minutes = "0" + date.getMinutes(); seconds = "0" + date.getSeconds(); return hours + ':' + minutes.substr(-2) + ':' + seconds.substr(-2);} function sender(message) { return message.sig.substr(2, 8)} function printMessage(message, myUsername) { line = web3.toAscii(message.payload); parts = line.split(":"); name = parts[0] if (name !== myUsername) { console.log("[" + time(message) + " " + name + "/" + sender(message) + "]" + parts.slice(1).join(":")); }}// end helper functions console.log("Supported functions:");console.log("* chat.setUsername(name:string)");console.log("* chat.join(password:string)");console.log("* chat.leave()");console.log("* chat.say(message:string)");console.log();

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