2015-02-12 11:44:15 +01:00
|
|
|
<!DOCTYPE html>
|
|
|
|
|
<html lang="en">
|
|
|
|
|
<head>
|
|
|
|
|
<meta charset="utf-8">
|
|
|
|
|
<title>JSDoc: Source: net/ws.js</title>
|
|
|
|
|
|
|
|
|
|
<script src="scripts/prettify/prettify.js"> </script>
|
|
|
|
|
<script src="scripts/prettify/lang-css.js"> </script>
|
|
|
|
|
<!--[if lt IE 9]>
|
|
|
|
|
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
|
|
|
|
|
<![endif]-->
|
|
|
|
|
<link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css">
|
|
|
|
|
<link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css">
|
|
|
|
|
</head>
|
|
|
|
|
|
|
|
|
|
<body>
|
|
|
|
|
|
|
|
|
|
<div id="main">
|
|
|
|
|
|
|
|
|
|
<h1 class="page-title">Source: net/ws.js</h1>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<section>
|
|
|
|
|
<article>
|
|
|
|
|
<pre class="prettyprint source linenums"><code>/**
|
|
|
|
|
* WebSocket transport. Needed because browsers can't handle TCP sockets
|
|
|
|
|
* so we use separate WebSocket server to proxy messages into TCP data
|
|
|
|
|
* packets. Available for both Node.js and Browser platforms.
|
|
|
|
|
* **NOTE**: `WsTransport` is exported as a module.
|
|
|
|
|
* @example var WsTransport = require("bitmessage/net/ws");
|
|
|
|
|
* @module bitmessage/net/ws
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
"use strict";
|
|
|
|
|
|
|
|
|
|
var objectAssign = Object.assign || require("object-assign");
|
|
|
|
|
var inherits = require("inherits");
|
|
|
|
|
var WebSocket = require("ws"); // jshint ignore:line
|
|
|
|
|
var assert = require("../_util").assert;
|
|
|
|
|
var PPromise = require("../platform").Promise;
|
|
|
|
|
var structs = require("../structs");
|
|
|
|
|
var messages = require("../messages");
|
|
|
|
|
var BaseTransport = require("./base");
|
|
|
|
|
|
|
|
|
|
var WebSocketServer = WebSocket.Server;
|
|
|
|
|
var getmsg = BaseTransport._getmsg;
|
|
|
|
|
var unmap = BaseTransport._unmap;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* WebSocket transport class. Implements
|
|
|
|
|
* [base transport interface]{@link module:bitmessage/net/base.BaseTransport}.
|
|
|
|
|
* @param {Object=} opts - Transport options
|
|
|
|
|
* @param {Array} opts.seeds - Bootstrap nodes (none by default)
|
|
|
|
|
* @param {Object} opts.services -
|
|
|
|
|
* [Service features]{@link module:bitmessage/structs.ServicesBitfield}
|
|
|
|
|
* provided by this node (`NODE_NETWORK` by default)
|
|
|
|
|
* @param {(Array|string|Buffer)} opts.userAgent -
|
|
|
|
|
* [User agent]{@link module:bitmessage/user-agent} of this node
|
|
|
|
|
* (bitmessage's by default)
|
|
|
|
|
* @param {number[]} opts.streamNumbers - Streams accepted by this node
|
|
|
|
|
* (1 by default)
|
|
|
|
|
* @param {number} opts.port - Incoming port of this node (8444 by
|
|
|
|
|
* default)
|
|
|
|
|
* @constructor
|
|
|
|
|
* @static
|
|
|
|
|
*/
|
|
|
|
|
function WsTransport(opts) {
|
|
|
|
|
WsTransport.super_.call(this);
|
|
|
|
|
objectAssign(this, opts);
|
|
|
|
|
this.seeds = this.seeds || [];
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
inherits(WsTransport, BaseTransport);
|
|
|
|
|
|
|
|
|
|
function getfrom(client) {
|
|
|
|
|
return unmap(client._socket.remoteAddress) + ":" + client._socket.remotePort;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
WsTransport.prototype._sendVersion = function() {
|
|
|
|
|
return this.send(messages.version.encode({
|
|
|
|
|
services: this.services,
|
|
|
|
|
userAgent: this.userAgent,
|
|
|
|
|
streamNumbers: this.streamNumbers,
|
|
|
|
|
port: this.port,
|
|
|
|
|
remoteHost: this._client._socket.remoteAddress,
|
|
|
|
|
remotePort: this._client._socket.remotePort,
|
|
|
|
|
}));
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
WsTransport.prototype._handleTimeout = function() {
|
|
|
|
|
var client = this._client;
|
|
|
|
|
// TODO(Kagami): We may also want to close connection if it wasn't
|
|
|
|
|
// established within minute.
|
|
|
|
|
client._socket.setTimeout(20000);
|
|
|
|
|
client._socket.on("timeout", function() {
|
|
|
|
|
client.close();
|
|
|
|
|
});
|
|
|
|
|
this.on("established", function() {
|
|
|
|
|
// Raise timeout up to 10 minutes per spec.
|
|
|
|
|
// TODO(Kagami): Send ping frame every 5 minutes as PyBitmessage.
|
|
|
|
|
client._socket.setTimeout(600000);
|
|
|
|
|
});
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
WsTransport.prototype._setupClient = function(client, accepted) {
|
|
|
|
|
var self = this;
|
|
|
|
|
self._client = client;
|
|
|
|
|
var verackSent = false;
|
|
|
|
|
var verackReceived = false;
|
|
|
|
|
var established = false;
|
|
|
|
|
|
|
|
|
|
client.on("open", function() {
|
|
|
|
|
// NOTE(Kagami): This handler shouldn't be called at all for
|
|
|
|
|
// accepted sockets but let's be sure.
|
|
|
|
|
if (!accepted) {
|
|
|
|
|
// NOTE(Kagami): We may set timeout only after connection was
|
|
|
|
|
// opened because socket may not yet be available when
|
|
|
|
|
// `_setupClient` is called.
|
|
|
|
|
self._handleTimeout();
|
|
|
|
|
self.emit("open");
|
|
|
|
|
self._sendVersion();
|
|
|
|
|
}
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
client.on("message", function(data, flags) {
|
|
|
|
|
var decoded;
|
|
|
|
|
if (!flags.binary) {
|
|
|
|
|
// TODO(Kagami): Send `error` message and ban node for some time
|
|
|
|
|
// if there were too many errors?
|
|
|
|
|
return self.emit("warning", new Error(
|
|
|
|
|
"Peer " + getfrom(client) + " sent non-binary data"
|
|
|
|
|
));
|
|
|
|
|
}
|
|
|
|
|
try {
|
|
|
|
|
decoded = structs.message.decode(data);
|
|
|
|
|
} catch (err) {
|
|
|
|
|
return self.emit("warning", new Error(
|
|
|
|
|
"Message decoding error from " + getfrom(client) + ": " + err
|
|
|
|
|
));
|
|
|
|
|
}
|
|
|
|
|
self.emit("message", decoded.command, decoded.payload, decoded);
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
// High-level message processing.
|
|
|
|
|
self.on("message", function(command) {
|
|
|
|
|
if (!established) {
|
|
|
|
|
// TODO: Process version data.
|
|
|
|
|
// TODO: Disconnect if proto version < 3.
|
|
|
|
|
if (command === "version") {
|
|
|
|
|
if (verackSent) {
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
self.send("verack");
|
|
|
|
|
verackSent = true;
|
|
|
|
|
if (accepted) {
|
|
|
|
|
self._sendVersion();
|
|
|
|
|
} else if (verackReceived) {
|
|
|
|
|
established = true;
|
|
|
|
|
self.emit("established");
|
|
|
|
|
}
|
|
|
|
|
} else if (command === "verack") {
|
|
|
|
|
verackReceived = true;
|
|
|
|
|
if (verackSent) {
|
|
|
|
|
established = true;
|
|
|
|
|
self.emit("established");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
client.on("error", function(err) {
|
|
|
|
|
self.emit("error", err);
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
client.on("close", function() {
|
|
|
|
|
self.emit("close");
|
|
|
|
|
delete self._client;
|
|
|
|
|
});
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
WsTransport.prototype.bootstrap = function() {
|
|
|
|
|
return PPromise.resolve([].concat(this.seeds));
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Connect to a WebSocket node. Connection arguments are the same as for
|
|
|
|
|
* [WebSocket](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket).
|
|
|
|
|
*/
|
|
|
|
|
WsTransport.prototype.connect = function(address, protocols, options) {
|
|
|
|
|
assert(!this._client, "Already connected");
|
|
|
|
|
assert(!this._server, "Already listening");
|
|
|
|
|
// `new` doesn't work with `apply`, so passing all possible arguments
|
|
|
|
|
// manually.
|
|
|
|
|
this._setupClient(new WebSocket(address, protocols, options));
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Listen for incoming WebSocket connections. Listen arguments are the
|
|
|
|
|
* same as for
|
|
|
|
|
* [WebSocketServer](https://github.com/websockets/ws#server-example).
|
|
|
|
|
* Available only for Node platform.
|
|
|
|
|
*/
|
|
|
|
|
WsTransport.prototype.listen = function(options, callback) {
|
|
|
|
|
assert(!this._client, "Already connected");
|
|
|
|
|
assert(!this._server, "Already listening");
|
|
|
|
|
|
|
|
|
|
var self = this;
|
|
|
|
|
var server = self._server = new WebSocketServer(options, callback);
|
|
|
|
|
|
|
|
|
|
// TODO(Kagami): We may want to specify some limits for number of
|
|
|
|
|
// connected users.
|
|
|
|
|
server.on("connection", function(client) {
|
|
|
|
|
var addr = client._socket.remoteAddress;
|
|
|
|
|
var port = client._remotePort;
|
|
|
|
|
var i;
|
|
|
|
|
|
|
|
|
|
// NOTE(Kagami): O(n) search because `clients` array is already
|
|
|
|
|
// provided by `ws` library. We may want to optmize it though and
|
|
|
|
|
// also disable `clientTracking` option.
|
|
|
|
|
for (i = 0; i < server.clients.length; i++) {
|
|
|
|
|
if (server.clients[i] !== client &&
|
|
|
|
|
server.clients[i]._socket.remoteAddress === addr) {
|
|
|
|
|
// NOTE(Kagami): Doesn't allow more than one connection per IP.
|
|
|
|
|
// This may obstruct people behind NAT but we copy
|
|
|
|
|
// PyBitmessage's behavior here.
|
|
|
|
|
client.close();
|
|
|
|
|
return self.emit("warning", new Error(
|
|
|
|
|
unmap(addr) + " was tried to create second connection"
|
|
|
|
|
));
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var transport = new self.constructor(self);
|
|
|
|
|
var accepted = true;
|
|
|
|
|
transport._setupClient(client, accepted);
|
|
|
|
|
transport._handleTimeout();
|
|
|
|
|
self.emit("connection", transport, unmap(addr), port);
|
|
|
|
|
// Emit "open" manually because it won't be fired for already opened
|
|
|
|
|
// socket.
|
|
|
|
|
transport.emit("open");
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
server.on("error", function(err) {
|
|
|
|
|
self.emit("error", err);
|
|
|
|
|
});
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
WsTransport.prototype.send = function() {
|
|
|
|
|
if (this._client) {
|
|
|
|
|
// TODO(Kagami): `mask: true` doesn't work with Chromium 40. File a
|
|
|
|
|
// bug to ws bugtracker.
|
|
|
|
|
this._client.send(getmsg(arguments), {binary: true});
|
|
|
|
|
} else {
|
|
|
|
|
throw new Error("Not connected");
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
WsTransport.prototype.broadcast = function() {
|
|
|
|
|
var data = getmsg(arguments);
|
|
|
|
|
if (this._server) {
|
|
|
|
|
this._server.clients.forEach(function(client) {
|
|
|
|
|
client.send(data, {binary: true});
|
|
|
|
|
});
|
|
|
|
|
} else {
|
|
|
|
|
throw new Error("Not listening");
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
WsTransport.prototype.close = function() {
|
|
|
|
|
if (this._client) {
|
|
|
|
|
this._client.close();
|
|
|
|
|
} else if (this._server) {
|
|
|
|
|
// `ws` server terminates immediately without any events.
|
|
|
|
|
this._server.close();
|
|
|
|
|
this.emit("close");
|
|
|
|
|
delete this._server;
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
module.exports = WsTransport;
|
|
|
|
|
</code></pre>
|
|
|
|
|
</article>
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<nav>
|
|
|
|
|
<h2><a href="index.html">Home</a></h2><h3>Modules</h3><ul><li><a href="module-bitmessage.html">bitmessage</a></li><li><a href="module-bitmessage_address.html">bitmessage/address</a></li><li><a href="module-bitmessage_crypto.html">bitmessage/crypto</a></li><li><a href="module-bitmessage_messages.html">bitmessage/messages</a></li><li><a href="module-bitmessage_net_base.html">bitmessage/net/base</a></li><li><a href="module-bitmessage_net_tcp.html">bitmessage/net/tcp</a></li><li><a href="module-bitmessage_net_ws.html">bitmessage/net/ws</a></li><li><a href="module-bitmessage_objects.html">bitmessage/objects</a></li><li><a href="module-bitmessage_pow.html">bitmessage/pow</a></li><li><a href="module-bitmessage_structs.html">bitmessage/structs</a></li><li><a href="module-bitmessage_user-agent.html">bitmessage/user-agent</a></li><li><a href="module-bitmessage_wif.html">bitmessage/wif</a></li></ul><h3>Classes</h3><ul><li><a href="module-bitmessage_address.Address.html">Address</a></li><li><a href="module-bitmessage_net_base.BaseTransport.html">BaseTransport</a></li><li><a href="module-bitmessage_net_tcp.TcpTransport.html">TcpTransport</a></li><li><a href="module-bitmessage_net_ws.WsTransport.html">WsTransport</a></li><li><a href="module-bitmessage_structs.PubkeyBitfield.html">PubkeyBitfield</a></li><li><a href="module-bitmessage_structs.ServicesBitfield.html">ServicesBitfield</a></li></ul><h3>Namespaces</h3><ul><li><a href="module-bitmessage_messages.addr.html">addr</a></li><li><a href="module-bitmessage_messages.error.html">error</a></li><li><a href="module-bitmessage_messages.getdata.html">getdata</a></li><li><a href="module-bitmessage_messages.inv.html">inv</a></li><li><a href="module-bitmessage_messages.version.html">version</a></li><li><a href="module-bitmessage_objects.broadcast.html">broadcast</a></li><li><a href="module-bitmessage_objects.getpubkey.html">getpubkey</a></li><li><a href="module-bitmessage_objects.msg.html">msg</a></li><li><a href="module-bitmessage_objects.pubkey.html">pubkey</a></li><li><a href="module-bitmessage_structs.encrypted.html">encrypted</a></li><li><a href="module-bitmessage_structs.inv_vect.html">inv_vect</a></li><li><a href="module-bitmessage_structs.message.html">message</a></li><li><a href="module-bitmessage_structs.net_addr.html">net_addr</a></li><li><a href="module-bitmessage_structs.object.html">object</a></li><li><a href="module-bitmessage_structs.var_int.html">var_int</a></li><li><a href="module-bitmessage_structs.var_int_list.html">var_int_list</a></li><li><a href="module-bitmessage_structs.var_str.html">var_str</a></li></ul>
|
|
|
|
|
</nav>
|
|
|
|
|
|
|
|
|
|
<br class="clear">
|
|
|
|
|
|
|
|
|
|
<footer>
|
2015-02-12 11:51:08 +01:00
|
|
|
Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.4.0-dev</a> on Thu Feb 12 2015 13:50:46 GMT+0300 (MSK)
|
2015-02-12 11:44:15 +01:00
|
|
|
</footer>
|
|
|
|
|
|
|
|
|
|
<script> prettyPrint(); </script>
|
|
|
|
|
<script src="scripts/linenumber.js"> </script>
|
|
|
|
|
</body>
|
|
|
|
|
</html>
|
