From e5ada7525f60b005ae6ddc1fda3c6f67b7138a5d Mon Sep 17 00:00:00 2001
From: Stefan Thomas <justmoon@members.fsf.org>
Date: Mon, 26 Sep 2011 21:41:56 +0100
Subject: [PATCH] Added simple exit node client.

---
 src/exit/client.js | 148 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 src/exit/client.js

diff --git a/src/exit/client.js b/src/exit/client.js
new file mode 100644
index 0000000..03bc5a7
--- /dev/null
+++ b/src/exit/client.js
@@ -0,0 +1,148 @@
+(function (exports, Bitcoin, io, $, global) {
+
+  /**
+   * Expose constructor.
+   */
+
+  exports.ExitNode = ExitNode;
+
+  function ExitNode(host, port, secure) {
+	  this.setUri(host, port, secure);
+
+	  this.unique = 1;
+    this.connected = false;
+
+	  this.callbacks = [];
+  };
+
+  Bitcoin.EventEmitter.augment(ExitNode);
+
+  ExitNode.prototype.setUri = function (host, port, secure) {
+    this.uri = (secure ? "https://" : "http://")+host+":"+port;
+  };
+
+  ExitNode.prototype.connect = function (wallet) {
+	  this.wallet = wallet;
+
+    // Workaround for socket.io not properly allowing disconnecting and reconnecting
+    delete io.sockets[this.uri];
+    io.j = [];
+
+	  this.socket = io.connect(this.uri);
+	  this.socket.on('connect', $.proxy(this.handleConnect, this));
+	  this.socket.on('error', function () {
+		  console.log('error, test');
+	  });
+	  this.socket.on('message', $.proxy(this.handleMessage, this));
+	  this.socket.on('disconnect', $.proxy(this.handleDisconnect, this));
+  };
+
+  ExitNode.prototype.disconnect = function () {
+	  if (this.socket) {
+      this.socket.disconnect();
+      this.socket = null;
+      this.connected = false;
+    }
+
+    this.trigger('connectStatus', {status: 'unknown'});
+  };
+
+  /**
+   * Make RPC call.
+   */
+  ExitNode.prototype.call = function (method, argObj, callback) {
+	  this.socket.send($.toJSON({
+		  "method": method,
+		  "params": [argObj],
+		  "id": this.unique
+	  }));
+	  if (callback) this.callbacks[this.unique] = callback;
+	  this.unique++;
+  };
+
+  ExitNode.prototype.handleConnect = function () {
+	  var self = this;
+
+    this.connected = true;
+  };
+
+  ExitNode.prototype.listen = function (addrs) {
+	  self.call("pubkeysRegister", {
+		  keys: addrs.join(',')
+	  }, function (err, result) {
+		  if (err) {
+			  console.error("Could not register public keys");
+			  return;
+		  }
+
+		  self.call("pubkeysListen", {
+			  handle: result.handle
+		  }, function (err, result) {
+			  // Communicate the block height
+			  self.trigger('blockInit', {height: result.height});
+
+			  // Pass on the newly downloaded transactions
+        self.trigger('txData', {
+          confirmed: true,
+          txs: result.txs
+        });
+
+			  // TODO: Download more transactions
+
+        self.trigger('connectStatus', {status: 'ok'});
+		  });
+
+		  self.call("pubkeysUnconfirmed", {
+			  handle: result.handle
+		  }, function (err, result) {
+			  // Pass on the newly downloaded transactions
+        self.trigger('txData', {
+          confirmed: false,
+          txs: result.txs
+        });
+		  });
+	  });
+  };
+
+
+  ExitNode.prototype.handleMessage = function (data) {
+	  // Handle JSON-RPC result messages
+	  if ("undefined" !== typeof data.result &&
+		    "function" == typeof this.callbacks[data.id]) {
+		  this.callbacks[data.id](data.error, data.result);
+
+	  // Handle JSON-RPC request messages
+	  } else if ("undefined" !== typeof data.method) {
+		  // Create an event
+      this.trigger(data.method, data.params[0]);
+	  }
+  };
+
+
+  ExitNode.prototype.handleDisconnect = function () {
+	  // TODO: Attempt reconnect (unless disconnect was intended)
+  };
+
+  ExitNode.prototype.query = function (api, params, jsonp,  callback) {
+    if ("function" === typeof jsonp) {
+      callback = jsonp;
+      jsonp = false;
+    }
+
+    params = params || {};
+    callback = "function" === typeof callback ? callback : function () {};
+
+    var url = this.uri + '/' + api;
+    if (jsonp) {
+      url += "?callback=?";
+    }
+
+    $.getJSON(url, params, callback);
+  };
+})(
+  'undefined' != typeof Bitcoin ? Bitcoin : module.exports,
+  'undefined' != typeof Bitcoin ? Bitcoin : require('bitcoinjs-lib'),
+  'undefined' != typeof io ? io : require('io'),
+  jQuery, // TODO: Add Node.js equivalent
+  this
+);