intial server implementation

TcpSocket.js

@@ -23,20 +23,36 @@ var Sockets = NativeModules.TcpSockets;
 var base64 = require('base64-js');
 var Base64Str = require('./base64-str');
 var noop = function () {};
-var instances = 0;
+var usedIds = [];
 var STATE = {
   DISCONNECTED: 0,
   CONNECTING: 1,
   CONNECTED: 2
 };
 
-module.exports = TcpSocket;
+exports.Socket = TcpSocket;
 
 function TcpSocket(options) {
   EventEmitter.call(this);
 
-  this._id = instances++;
+  options = options || {};
-  this._state = STATE.DISCONNECTED;
+
+  var nativeSocket = false;
+  if (!options._id) {
+    // javascript generated sockets range from 1-1000
+    this._id = Math.floor((Math.random() * 1000) + 1);
+    while (usedIds.indexOf(this._id) !== -1) {
+      this._id = Math.floor((Math.random() * 1000) + 1);
+    }
+  } else {
+    // native generated sockets range from 5000-6000
+    // e.g. incoming server connections
+    this._id = options._id;
+    nativeSocket = true;
+  }
+  usedIds.push(this._id);
+
+  this._state = nativeSocket ? STATE.CONNECTED : STATE.DISCONNECTED;
   this._connecting = false;
   this._hadError = false;
   this._host = null;
@@ -63,7 +79,9 @@ function TcpSocket(options) {
     this.on = this.addListener.bind(this);
   }
 
-  Sockets.createSocket(this._id); // later
+  if (nativeSocket === false) {
+    Sockets.createSocket(this._id);
+  }
 }
 
 inherits(TcpSocket, EventEmitter);
@@ -82,7 +100,7 @@ TcpSocket.prototype.connect = function(options, callback) {
   }
 
   if (typeof callback === 'function') {
-    this.once('connected', callback);
+    this.once('connect', callback);
   }
 
   var host = options.host || 'localhost';
@@ -282,3 +300,75 @@ function normalizeError (err) {
     return err;
   }
 }
+
+exports.Server = TcpServer;
+
+function TcpServer(options, connectionListener) {
+  if (!(this instanceof TcpServer)) {
+    return new TcpServer(options, connectionListener);
+  }
+
+  EventEmitter.call(this);
+
+  var self = this;
+
+  this._socket = new exports.Socket(options);
+  this._socket.on('connect', function() {
+    self.emit('listening');
+  });
+  this._socket.on('error', function(error) {
+    self.emit('error', error);
+    self._socket.destroy();
+  });
+  this._socket.on('close', function() {
+    self.emit('close');
+  });
+  this._socket.on('connection', function(socketId) {
+    var socket = new exports.Socket({_id : socketId });
+    self.emit('connection', socket);
+  });
+
+  if (typeof options === 'function') {
+    connectionListener = options;
+    options = {};
+    self.on('connection', connectionListener);
+  } else {
+    options = options || {};
+
+    if (typeof connectionListener === 'function') {
+      self.on('connection', connectionListener);
+    }
+  }
+
+  // this._connections = 0;
+
+  // this.allowHalfOpen = options.allowHalfOpen || false;
+  // this.pauseOnConnect = !!options.pauseOnConnect;
+}
+
+inherits(TcpServer, EventEmitter);
+
+TcpServer.prototype.listen = function(options, callback) {
+  var port = Number(options.port);
+  var hostname = options.hostname || 'localhost';
+
+  if (callback) {
+    this.on('listening', callback);
+  }
+
+  Sockets.listen(this._socket._id, hostname, port);
+
+  return this;
+};
+
+TcpServer.prototype.getConnections = function(callback) {
+  /* nop */
+};
+
+TcpServer.prototype.close = function(callback) {
+  if (callback) {
+    this.on('close', callback);
+  }
+
+  this._socket.end();
+};

TcpSockets.js

@@ -6,7 +6,13 @@
 
 var ipRegex = require('ip-regex');
 
-exports.Socket = require('./TcpSocket');
+var Socket = require('./TcpSocket').Socket;
+var Server = require('./TcpSocket').Server;
+
+exports.createServer = function(options, connectionListener) {
+  return new Server(options, connectionListener);
+};
+
 
 // Target API:
 //
@@ -20,38 +26,38 @@ exports.Socket = require('./TcpSocket');
 // connect(port, [host], [cb])
 // connect(path, [cb]);
 //
-exports.connect = exports.createConnection = function() {
+// exports.connect = exports.createConnection = function() {
-  var args = normalizeConnectArgs(arguments);
+//   var args = normalizeConnectArgs(arguments);
-  exports.Socket._debug('createConnection', args);
+//   Socket._debug('createConnection', args);
-  var s = new exports.Socket(args[0]);
+//   var s = new Socket(args[0]);
-  return exports.Socket.prototype.connect.apply(s, args);
+//   return Socket.prototype.connect.apply(s, args);
-};
+// };
+//
+// // Returns an array [options] or [options, cb]
+// // It is the same as the argument of Socket.prototype.connect().
+// function normalizeConnectArgs(args) {
+//   var options = {};
+//
+//   if (args[0] !== null && typeof args[0] === 'object') {
+//     // connect(options, [cb])
+//     options = args[0];
+//   }/* else if (isPipeName(args[0])) {
+//     // connect(path, [cb]);
+//     options.path = args[0];
+//   }*/ else {
+//     // connect(port, [host], [cb])
+//     options.port = args[0];
+//     if (typeof args[1] === 'string') {
+//       options.host = args[1];
+//     }
+//   }
+//
+//   var cb = args[args.length - 1];
+//   return typeof cb === 'function' ? [options, cb] : [options];
+// }
 
-// Returns an array [options] or [options, cb]
+exports.connect = exports.createConnection = function(options: { port: number, host: ?string, localAddress: ?string, localPort: ?number, family: ?number }, callback : ?any) : Socket {
-// It is the same as the argument of Socket.prototype.connect().
+  var tcpSocket = new Socket();
-function normalizeConnectArgs(args) {
-  var options = {};
-
-  if (args[0] !== null && typeof args[0] === 'object') {
-    // connect(options, [cb])
-    options = args[0];
-  }/* else if (isPipeName(args[0])) {
-    // connect(path, [cb]);
-    options.path = args[0];
-  }*/ else {
-    // connect(port, [host], [cb])
-    options.port = args[0];
-    if (typeof args[1] === 'string') {
-      options.host = args[1];
-    }
-  }
-
-  var cb = args[args.length - 1];
-  return typeof cb === 'function' ? [options, cb] : [options];
-}
-
-exports.createConnection = function(options: { port: number,host: ?string, localAddress: ?string, localPort: ?number, family: ?number }, callback : ?any) : exports.Socket {
-  var tcpSocket = new exports.Socket();
   tcpSocket.connect(options, callback);
   return tcpSocket;
 };
@@ -73,3 +79,6 @@ exports.isIPv4 = function(input: string) : boolean {
 exports.isIPv6 = function(input: string) : boolean {
   return exports.isIP(input) === 6;
 };
+
+exports.Socket = Socket;
+exports.Server = Server;

examples/rctsockets/index.js

@@ -13,58 +13,54 @@ global.Buffer = global.Buffer || require('buffer').Buffer;
 var net = require('net');
 
 function randomPort() {
-  return Math.random() * 60536 | 0 + 5000 // 60536-65536
+  return Math.random() * 60536 | 0 + 5000; // 60536-65536
 }
 
-var a = net.createConnection({ port: randomPort() }, function(err) {
+var aPort = randomPort();
-  if (err) throw err
 
-  console.log('connected');
+var a = net.createServer({}, function(socket) {
+  console.log('server connected');
+
+  // socket.on('data', function (data) {
+  //   var str = String.fromCharCode.apply(null, new Uint8Array(data));
+  //   console.log('a received', str);
+  //   a.close();
+  //   b.end();
+  // });
+
+  socket.on('data', function (data) {
+    console.log('Server Received: ' + data);
+    socket.write('Echo server\r\n');
+  });
+
+  socket.on('error', function(error) {
+    console.log('error ' + error);
+  });
+}).listen({ port: aPort });
+
+// a.on('listening', function() {
+//   console.log('listening');
+// });
+//
+// a.on('error', function(error) {
+//   console.log('error ' + error);
+// });
+
+var b = net.createConnection({ port: aPort }, function(err) {
+  if (err) {
+    throw err;
+  }
+
+  console.log('client connected');
+  b.write('Hello, server! Love, Client.');
 });
 
-a.on('error', function(err) {
+b.on('data', function(data) {
-  console.log(err);
+	console.log('Client Received: ' + data);
+  b.end(); // kill client after server's response
+  a.close();
 });
 
-var b = net.createConnection({ port: randomPort() }, function(err) {
-  if (err) throw err
-
-  console.log('connected');
-});
-
-b.on('error', function(err) {
-  console.log(err);
-});
-
-
-// a.on('message', function(data, rinfo) {
-//   var str = String.fromCharCode.apply(null, new Uint8Array(data));
-//   console.log('a received', str, rinfo)
-//   a.close()
-//   b.close()
-// })
-// 
-// b.on('message', function(data, rinfo) {
-//   var str = String.fromCharCode.apply(null, new Uint8Array(data));
-//   console.log('b received', str, rinfo)
-// 
-//   // echo back
-//   b.send(data, 0, data.length, aPort, '127.0.0.1', function(err) {
-//     if (err) throw err
-// 
-//     console.log('sent')
-//   })
-// })
-// 
-// b.once('listening', function() {
-//   var msg = toByteArray('hello')
-//   a.send(msg, 0, msg.length, bPort, '127.0.0.1', function(err) {
-//     if (err) throw err
-// 
-//     console.log('sent')
-//   })
-// })
-
 var rctsockets = React.createClass({
   render: function() {
     return (
@@ -96,14 +92,14 @@ var styles = StyleSheet.create({
   },
 });
 
-// // only works for 8-bit chars
+// only works for 8-bit chars
-// function toByteArray(obj) {
+function toByteArray(obj) {
-//   var uint = new Uint8Array(obj.length);
+  var uint = new Uint8Array(obj.length);
-//   for (var i = 0, l = obj.length; i < l; i++){
+  for (var i = 0, l = obj.length; i < l; i++){
-//     uint[i] = obj.charCodeAt(i);
+    uint[i] = obj.charCodeAt(i);
-//   }
+  }
-//
+
-//   return new Uint8Array(uint);
+  return new Uint8Array(uint);
-// }
+}
 
 AppRegistry.registerComponent('rctsockets', () => rctsockets);

examples/rctsockets/ios/rctsockets.xcodeproj/project.pbxproj

@@ -369,7 +369,7 @@
 		83CBB9F71A601CBA00E9B192 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0610;
+				LastUpgradeCheck = 0720;
 				ORGANIZATIONNAME = Facebook;
 				TargetAttributes = {
 					00E356ED1AD99517003FC87E = {
@@ -615,6 +615,7 @@
 				INFOPLIST_FILE = rctsocketsTests/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 8.2;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/rctsockets.app/rctsockets";
 			};
@@ -632,6 +633,7 @@
 				INFOPLIST_FILE = rctsocketsTests/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 8.2;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/rctsockets.app/rctsockets";
 			};
@@ -650,6 +652,7 @@
 				INFOPLIST_FILE = rctsockets/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				OTHER_LDFLAGS = "-ObjC";
+				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = rctsockets;
 			};
 			name = Debug;
@@ -666,6 +669,7 @@
 				INFOPLIST_FILE = rctsockets/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				OTHER_LDFLAGS = "-ObjC";
+				PRODUCT_BUNDLE_IDENTIFIER = "org.reactjs.native.example.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = rctsockets;
 			};
 			name = Release;
@@ -690,6 +694,7 @@
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				COPY_PHASE_STRIP = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_TESTABILITY = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_OPTIMIZATION_LEVEL = 0;

examples/rctsockets/ios/rctsockets.xcodeproj/xcshareddata/xcschemes/rctsockets.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0620"
+   LastUpgradeVersion = "0720"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -37,10 +37,10 @@
       </BuildActionEntries>
    </BuildAction>
    <TestAction
+      buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
+      shouldUseLaunchSchemeArgsEnv = "YES">
-      buildConfiguration = "Debug">
       <Testables>
          <TestableReference
             skipped = "NO">
@@ -62,15 +62,18 @@
             ReferencedContainer = "container:rctsockets.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
    </TestAction>
    <LaunchAction
+      buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Debug"
       ignoresPersistentStateOnLaunch = "NO"
       debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
       <BuildableProductRunnable
          runnableDebuggingMode = "0">
@@ -86,10 +89,10 @@
       </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
+      buildConfiguration = "Release"
       shouldUseLaunchSchemeArgsEnv = "YES"
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Release"
       debugDocumentVersioning = "YES">
       <BuildableProductRunnable
          runnableDebuggingMode = "0">

examples/rctsockets/ios/rctsockets/Info.plist

@@ -7,7 +7,7 @@
 	<key>CFBundleExecutable</key>
 	<string>$(EXECUTABLE_NAME)</string>
 	<key>CFBundleIdentifier</key>
-	<string>org.reactjs.native.example.$(PRODUCT_NAME:rfc1034identifier)</string>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>
@@ -22,6 +22,13 @@
 	<string>1</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
+	<key>NSAppTransportSecurity</key>
+	<dict>
+		<key>NSAllowsArbitraryLoads</key>
+		<true/>
+	</dict>
+	<key>NSLocationWhenInUseUsageDescription</key>
+	<string></string>
 	<key>UILaunchStoryboardName</key>
 	<string>LaunchScreen</string>
 	<key>UIRequiredDeviceCapabilities</key>
@@ -36,13 +43,5 @@
 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
-	<key>NSLocationWhenInUseUsageDescription</key>
-	<string></string>
-  <key>NSAppTransportSecurity</key>
-  <dict>
-    <!--See http://ste.vn/2015/06/10/configuring-app-transport-security-ios-9-osx-10-11/-->
-    <key>NSAllowsArbitraryLoads</key>
-    <true/>
-  </dict>
 </dict>
 </plist>

examples/rctsockets/ios/rctsocketsTests/Info.plist

@@ -7,7 +7,7 @@
 	<key>CFBundleExecutable</key>
 	<string>$(EXECUTABLE_NAME)</string>
 	<key>CFBundleIdentifier</key>
-	<string>org.reactjs.native.example.$(PRODUCT_NAME:rfc1034identifier)</string>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>

examples/rctsockets/ios/rctsocketsTests/rctsocketsTests.m

@@ -42,7 +42,7 @@
   BOOL foundElement = NO;
 
   __block NSString *redboxError = nil;
-  RCTSetLogFunction(^(RCTLogLevel level, NSString *fileName, NSNumber *lineNumber, NSString *message) {
+  RCTSetLogFunction(^(RCTLogLevel level, RCTLogSource source, NSString *fileName, NSNumber *lineNumber, NSString *message) {
     if (level >= RCTLogLevelError) {
       redboxError = message;
     }

examples/rctsockets/package.json

@@ -11,8 +11,12 @@
   "dependencies": {
     "buffer": "^3.5.3",
     "events": "^1.1.0",
-    "react-native": "^0.15.0",
+    "react-native": "^0.17.0",
     "react-native-tcp": "../../",
     "util": "^0.10.3"
+  },
+  "devDependencies": {
+    "babel-eslint": "^4.1.6",
+    "eslint-plugin-react": "^3.11.3"
   }
 }

examples/rctsockets/telnet-client.js

@@ -1,292 +0,0 @@
-// https://www.npmjs.com/package/another-telnet-client
-(function () {
-    "use strict";
-
-    var util = require('util');
-    var events = require('events');
-    var net = require('net');
-
-
-    // define a constructor (object) and inherit EventEmitter functions
-    function Telnet() {
-        events.EventEmitter.call(this);
-        if (false === (this instanceof Telnet)) {
-            return new Telnet();
-        }
-    }
-
-    util.inherits(Telnet, events.EventEmitter);
-
-    Telnet.prototype.connect = function (opts) {
-        var self = this;
-        var host = (typeof opts.host !== 'undefined' ? opts.host : '127.0.0.1');
-        var port = (typeof opts.port !== 'undefined' ? opts.port : 23);
-        this.timeout = (typeof opts.timeout !== 'undefined' ? opts.timeout : 500);
-        this.shellPrompt = (typeof opts.shellPrompt !== 'undefined' ? opts.shellPrompt : /(?:\/ )?#\s/);
-        this.loginPrompt = (typeof opts.loginPrompt !== 'undefined' ? opts.loginPrompt : /login[: ]*$/i);
-        this.passwordPrompt = (typeof opts.passwordPrompt !== 'undefined' ? opts.passwordPrompt : /Password: /i);
-        this.username = (typeof opts.username !== 'undefined' ? opts.username : 'root');
-        this.password = (typeof opts.password !== 'undefined' ? opts.password : 'guest');
-        this.enable = (typeof opts.enable !== 'undefined' ? opts.enable : false);
-        this.enablePrompt = (typeof opts.enablePrompt !== 'undefined' ? opts.enablePrompt : /Password: /i);
-        this.enablePassword = (typeof opts.enablePassword !== 'undefined' ? opts.enablePassword : 'enablepass');
-        this.irs = (typeof opts.irs !== 'undefined' ? opts.irs : '\r\n');
-        this.ors = (typeof opts.ors !== 'undefined' ? opts.ors : '\n');
-        this.echoLines = (typeof opts.echoLines !== 'undefined' ? opts.echoLines : 1);
-        this.pageSeparator = (typeof opts.pageSeparator !== 'undefined' ? opts.pageSeparator : '---- More');
-        this.ignoreOutput = (typeof opts.ignoreOutput !== 'undefined' ? opts.ignoreOutput : false);
-        this.ignoreOutputTimeout = (typeof opts.ignoreOutputTimeout !== 'undefined' ? opts.ignoreOutputTimeout : 1000);
-        this.response = '';
-        this.telnetState = null;
-
-        this.telnetSocket = net.createConnection({
-            port: port,
-            host: host
-        }, function () {
-            self.telnetState = 'start';
-            self.stringData = '';
-            self.emit('connect');
-        });
-
-        this.telnetSocket.setTimeout(this.timeout, function () {
-            if (self.telnetSocket._connecting === true) {
-                // info: cannot connect; emit error and destroy
-                self.emit('error', 'Cannot connect');
-
-                self.telnetSocket.destroy();
-            }
-            else {
-                self.emit('timeout');
-            }
-        });
-
-        this.telnetSocket.on('data', function (data) {
-            parseData(data, self);
-        });
-
-        this.telnetSocket.on('error', function (error) {
-            self.emit('error', error);
-        });
-
-        this.telnetSocket.on('end', function () {
-            self.emit('end');
-        });
-
-        this.telnetSocket.on('close', function () {
-            self.emit('close');
-        });
-    };
-
-    Telnet.prototype.exec = function (cmd, opts, callback) {
-        var self = this;
-        cmd += this.ors;
-
-        if (opts && opts instanceof Function) {
-            callback = opts;
-        }
-        else if (opts && opts instanceof Object) {
-            self.shellPrompt = opts.shellPrompt || self.shellPrompt;
-            self.loginPrompt = opts.loginPrompt || self.loginPrompt;
-            self.timeout = opts.timeout || self.timeout;
-            self.irs = opts.irs || self.irs;
-            self.ors = opts.ors || self.ors;
-            self.echoLines = opts.echoLines || self.echoLines;
-            self.ignoreOutput = opts.ignoreOutput || self.ignoreOutput;
-            self.ignoreOutputTimeout = opts.ignoreOutputTimeout || self.ignoreOutputTimeout;
-        }
-
-        if (this.telnetSocket.writable) {
-            this.telnetSocket.write(cmd, function () {
-                self.telnetState = 'response';
-                self.emit('writedone');
-
-                if (self.ignoreOutput === true) {
-                    setTimeout(function () {
-                        self.ignoreOutput = false;
-                        callback(null);
-                    }, self.ignoreOutputTimeout);
-                } else {
-                    self.once('responseready', function () {
-                        if (callback && self.cmdOutput !== undefined) {
-                            callback(self.cmdOutput.join('\n'));
-                        }
-                        else if (callback && self.cmdOutput === undefined) {
-                            callback(null);
-                        }
-
-                        // reset stored response
-                        self.stringData = '';
-                    });
-                }
-
-            });
-        } else {
-            callback(new Error("Socket not writable"));
-        }
-    };
-
-    Telnet.prototype.end = function () {
-        this.telnetSocket.end();
-    };
-
-    Telnet.prototype.destroy = function () {
-        this.telnetSocket.destroy();
-    };
-
-    function parseData(chunk, telnetObj) {
-        var promptIndex = '';
-        var tempStringData = '';
-
-        if (chunk[0] === 255 && chunk[1] !== 255) {
-            telnetObj.stringData = '';
-            var negReturn = negotiate(telnetObj, chunk);
-
-            if (negReturn === undefined) {
-                return;
-            }
-            else {
-                chunk = negReturn;
-            }
-        }
-
-        if (telnetObj.ignoreOutput === true) {
-            telnetObj.stringData = '';
-            return;
-        }
-
-        if (telnetObj.telnetState === 'start') {
-            telnetObj.telnetState = 'getprompt';
-        }
-
-        if (telnetObj.telnetState === 'getprompt') {
-            tempStringData = chunk.toString();
-            promptIndex = tempStringData.search(telnetObj.shellPrompt);
-
-            if (promptIndex !== -1) {
-                telnetObj.shellPrompt = tempStringData.substring(promptIndex);
-                telnetObj.telnetState = 'sendcmd';
-                telnetObj.stringData = '';
-                telnetObj.emit('ready', telnetObj.shellPrompt);
-            }
-            else if (tempStringData.search(telnetObj.loginPrompt) !== -1) {
-                telnetObj.telnetState = 'login';
-                login(telnetObj, 'username');
-            }
-            else if (tempStringData.search(telnetObj.passwordPrompt) !== -1) {
-                telnetObj.telnetState = 'login';
-                login(telnetObj, 'password');
-            }
-        }
-        else if (telnetObj.telnetState === 'enable') {
-            tempStringData = chunk.toString();
-
-            if (tempStringData.search(telnetObj.enablePrompt) !== -1) {
-                telnetObj.telnetState = 'login';
-                login(telnetObj, 'enablePassword');
-            }
-        }
-        else if (telnetObj.telnetState === 'getenprompt') {
-            tempStringData = chunk.toString();
-
-            if (tempStringData.search(telnetObj.shellPrompt) !== -1) {
-                telnetObj.telnetState = 'login';
-                login(telnetObj, 'enable');
-            }
-        }
-        else if (telnetObj.telnetState === 'response') {
-            tempStringData = chunk.toString();
-            telnetObj.stringData += tempStringData;
-            promptIndex = tempStringData.search(telnetObj.shellPrompt);
-
-            if (promptIndex === -1 && tempStringData.length !== 0) {
-                if (tempStringData.search(telnetObj.pageSeparator) !== -1) {
-                    telnetObj.telnetSocket.write(Buffer('20', 'hex'));
-                }
-
-                return;
-            }
-
-            telnetObj.cmdOutput = telnetObj.stringData.split(telnetObj.irs);
-
-            for (var i = 0; i < telnetObj.cmdOutput.length; i++) {
-                if (telnetObj.cmdOutput[i].search(telnetObj.pageSeparator) !== -1) {
-                    telnetObj.cmdOutput.splice(i, 1);
-                }
-            }
-
-            if (telnetObj.echoLines === 1) {
-                telnetObj.cmdOutput.shift();
-            }
-            else if (telnetObj.echoLines > 1) {
-                telnetObj.cmdOutput.splice(0, telnetObj.echoLines);
-            }
-
-            // remove prompt
-            telnetObj.cmdOutput.pop();
-
-            telnetObj.emit('responseready');
-        }
-    }
-
-    function login(telnetObj, handle) {
-        if (handle === 'username') {
-            if (telnetObj.telnetSocket.writable) {
-                telnetObj.telnetSocket.write(telnetObj.username + telnetObj.ors, function () {
-                    telnetObj.telnetState = 'getprompt';
-                });
-            }
-        }
-        else if (handle === 'password') {
-            if (telnetObj.telnetSocket.writable) {
-                telnetObj.telnetSocket.write(telnetObj.password + telnetObj.ors, function () {
-                    if (telnetObj.enable) {
-                        telnetObj.telnetState = 'getenprompt';
-                    } else {
-                        telnetObj.telnetState = 'getprompt';
-                    }
-                });
-            }
-        }
-        else if (handle === 'enable') {
-            if (telnetObj.telnetSocket.writable) {
-                telnetObj.telnetSocket.write("en" + telnetObj.ors, function () {
-                    telnetObj.telnetState = 'enable';
-                });
-            }
-        }
-        else if (handle === 'enablePassword') {
-            if (telnetObj.telnetSocket.writable) {
-                telnetObj.telnetSocket.write(telnetObj.enablePassword + telnetObj.ors, function () {
-                    telnetObj.telnetState = 'getprompt';
-                });
-            }
-        }
-    }
-
-    function negotiate(telnetObj, chunk) {
-        // info: http://tools.ietf.org/html/rfc1143#section-7
-        // refuse to start performing and ack the start of performance
-        // DO -> WONT; WILL -> DO
-        var packetLength = chunk.length, negData = chunk, cmdData, negResp;
-
-        for (var i = 0; i < packetLength; i += 3) {
-            if (chunk[i] !== 255) {
-                negData = chunk.slice(0, i);
-                cmdData = chunk.slice(i);
-                break;
-            }
-        }
-
-        negResp = negData.toString('hex').replace(/fd/g, 'fc').replace(/fb/g, 'fd');
-
-        if (telnetObj.telnetSocket.writable) {
-            telnetObj.telnetSocket.write(Buffer(negResp, 'hex'));
-        }
-
-        if (cmdData !== undefined) {
-            return cmdData;
-        }
-    }
-
-    module.exports = Telnet;
-}());

ios/TcpSocketClient.h

@@ -29,16 +29,19 @@ typedef enum RCTTCPError RCTTCPError;
 
 @protocol SocketClientDelegate <NSObject>
 
-- (void)onConnect:(TcpSocketClient*) client;
+- (void)onConnect:(TcpSocketClient*)client;
-- (void)onData:(TcpSocketClient*) client data:(NSData *)data;
+- (void)onConnection:(TcpSocketClient*)client toClient:(NSNumber *)clientID;
-- (void)onClose:(TcpSocketClient*) client withError:(NSError *)err;
+- (void)onData:(NSNumber *)clientID data:(NSData *)data;
-- (void)onError:(TcpSocketClient*) client withError:(NSError *)err;
+- (void)onClose:(TcpSocketClient*)client withError:(NSError *)err;
+- (void)onError:(TcpSocketClient*)client withError:(NSError *)err;
+- (NSNumber*)generateRandomId;
 
 @end
 
 @interface TcpSocketClient : NSObject
 
 @property (nonatomic, retain) NSNumber * id;
+@property (nonatomic, weak) id<SocketClientDelegate> clientDelegate;
 
 ///---------------------------------------------------------------------------------------
 /// @name Class Methods
@@ -65,6 +68,8 @@ typedef enum RCTTCPError RCTTCPError;
  */
 - (BOOL)connect:(NSString *)host port:(int)port withOptions:(NSDictionary *)options error:(NSError **)error;
 
+- (BOOL)listen:(NSString *)host port:(int)port error:(NSError **)error;
+
 /**
  * write data
  *

ios/TcpSocketClient.m

@@ -18,13 +18,13 @@ NSString *const RCTTCPErrorDomain = @"RCTTCPErrorDomain";
 {
 @private
     GCDAsyncSocket *_tcpSocket;
-    id<SocketClientDelegate> _clientDelegate;
     NSMutableDictionary<NSNumber *, RCTResponseSenderBlock> *_pendingSends;
     NSLock *_lock;
     long _sendTag;
 }
 
-- (id)initWithClientId:(NSNumber *)clientID andConfig:(id<SocketClientDelegate>) aDelegate;
+- (id)initWithClientId:(NSNumber *)clientID andConfig:(id<SocketClientDelegate>)aDelegate;
+- (id)initWithClientId:(NSNumber *)clientID andConfig:(id<SocketClientDelegate>)aDelegate andSocket:(GCDAsyncSocket*)tcpSocket;
 
 @end
 
@@ -32,10 +32,15 @@ NSString *const RCTTCPErrorDomain = @"RCTTCPErrorDomain";
 
 + (id)socketClientWithId:(nonnull NSNumber *)clientID andConfig:(id<SocketClientDelegate>)delegate
 {
-    return [[[self class] alloc] initWithClientId:clientID andConfig:delegate];
+    return [[[self class] alloc] initWithClientId:clientID andConfig:delegate andSocket:nil];
 }
 
-- (id)initWithClientId:(NSNumber *)clientID andConfig:(id<SocketClientDelegate>) aDelegate
+- (id)initWithClientId:(NSNumber *)clientID andConfig:(id<SocketClientDelegate>)aDelegate
+{
+    return [self initWithClientId:clientID andConfig:aDelegate andSocket:nil];
+}
+
+- (id)initWithClientId:(NSNumber *)clientID andConfig:(id<SocketClientDelegate>)aDelegate andSocket:(GCDAsyncSocket*)tcpSocket;
 {
     self = [super init];
     if (self) {
@@ -43,6 +48,7 @@ NSString *const RCTTCPErrorDomain = @"RCTTCPErrorDomain";
         _clientDelegate = aDelegate;
         _pendingSends = [NSMutableDictionary dictionary];
         _lock = [[NSLock alloc] init];
+        _tcpSocket = tcpSocket;
     }
 
     return self;
@@ -82,6 +88,27 @@ NSString *const RCTTCPErrorDomain = @"RCTTCPErrorDomain";
     return result;
 }
 
+- (BOOL)listen:(NSString *)host port:(int)port error:(NSError **)error
+{
+    if (_tcpSocket) {
+        if (error) {
+            *error = [self badInvocationError:@"this client's socket is already connected"];
+        }
+
+        return false;
+    }
+
+    _tcpSocket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:[self methodQueue]];
+
+    BOOL result = [_tcpSocket acceptOnInterface:host port:port error:error];
+    if (result == YES) {
+        [_clientDelegate onConnect: self];
+        [_tcpSocket readDataWithTimeout:-1 tag:_id.longValue];
+    }
+
+    return result;
+}
+
 - (void)setPendingSend:(RCTResponseSenderBlock)callback forKey:(NSNumber *)key
 {
     [_lock lock];
@@ -130,12 +157,12 @@ NSString *const RCTTCPErrorDomain = @"RCTTCPErrorDomain";
 {
     [_tcpSocket writeData:data withTimeout:-1 tag:_sendTag];
     if (callback) {
-        [self setPendingSend:callback forKey:[NSNumber numberWithLong:_sendTag]];
+        [self setPendingSend:callback forKey:@(_sendTag)];
     }
 
     _sendTag++;
 
-    [_tcpSocket readDataWithTimeout:-1 tag:-1];
+    [_tcpSocket readDataWithTimeout:-1 tag:_id.longValue];
 }
 
 - (void)end
@@ -150,9 +177,19 @@ NSString *const RCTTCPErrorDomain = @"RCTTCPErrorDomain";
 
 - (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag {
     if (!_clientDelegate) return;
-    [_clientDelegate onData:self data:data];
+    [_clientDelegate onData:@(tag) data:data];
 
-    [sock readDataWithTimeout:-1 tag:-1];
+    [sock readDataWithTimeout:-1 tag:tag];
+}
+
+- (void)socket:(GCDAsyncSocket *)sock didAcceptNewSocket:(GCDAsyncSocket *)newSocket
+{
+    TcpSocketClient *inComing = [[TcpSocketClient alloc] initWithClientId:[_clientDelegate generateRandomId]
+                                                                andConfig:_clientDelegate
+                                                                andSocket:newSocket];
+    [_clientDelegate onConnection: inComing
+                         toClient: _id];
+    [newSocket readDataWithTimeout:-1 tag:inComing.id.longValue];
 }
 
 - (void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port
@@ -160,11 +197,13 @@ NSString *const RCTTCPErrorDomain = @"RCTTCPErrorDomain";
     if (!_clientDelegate) return;
     [_clientDelegate onConnect:self];
 
-    [sock readDataWithTimeout:-1 tag:-1];
+    [sock readDataWithTimeout:-1 tag:_id.longValue];
 }
 
 - (void)socketDidCloseReadStream:(GCDAsyncSocket *)sock
 {
+    // TODO : investigate for half-closed sockets
+    /* no-op */
 }
 
 - (void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err

ios/TcpSockets.h

@@ -16,6 +16,4 @@
 
 @interface TcpSockets : NSObject<SocketClientDelegate, RCTBridgeModule>
 
-+(NSMutableDictionary<NSNumber *,TcpSocketClient *> *)clients;
-
 @end

ios/TcpSockets.m

@@ -15,47 +15,38 @@
 #import "TcpSocketClient.h"
 
 @implementation TcpSockets
+{
+    NSMutableDictionary<NSNumber *,TcpSocketClient *> *_clients;
+}
 
 RCT_EXPORT_MODULE()
 
 @synthesize bridge = _bridge;
 
-+ (void) initialize {
+-(void)dealloc
-    [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(closeAllSockets)
-                                                 name:RCTReloadNotification
-                                               object:nil];
-}
-
-+(NSMutableDictionary<NSNumber *,TcpSocketClient *> *) clients
 {
-    static NSMutableDictionary* c = nil;
+    for (NSNumber *cId in _clients.allKeys) {
-
+        [self destroyClient:cId callback:nil];
-    static dispatch_once_t oncePredicate;
+    }
-
-    dispatch_once(&oncePredicate, ^{
-        c = [[NSMutableDictionary alloc] init];
-    });
-
-    return c;
 }
 
 RCT_EXPORT_METHOD(createSocket:(nonnull NSNumber*)cId)
 {
-    NSMutableDictionary<NSNumber *,TcpSocketClient *> *_clients = [TcpSockets clients];
     if (!cId) {
         RCTLogError(@"%@.createSocket called with nil id parameter.", [self class]);
         return;
     }
 
-    TcpSocketClient *client = [_clients objectForKey:cId];
+    if (!_clients) {
-    if (client) {
+        _clients = [NSMutableDictionary new];
+    }
+
+    if (_clients[cId]) {
         RCTLogError(@"%@.createSocket called twice with the same id.", [self class]);
         return;
     }
 
-    client = [TcpSocketClient socketClientWithId:cId andConfig:self];
+    _clients[cId] = [TcpSocketClient socketClientWithId:cId andConfig:self];
-    [_clients setObject:client forKey:cId];
 }
 
 RCT_EXPORT_METHOD(connect:(nonnull NSNumber*)cId
@@ -63,7 +54,7 @@ RCT_EXPORT_METHOD(connect:(nonnull NSNumber*)cId
                   port:(int)port
                   withOptions:(NSDictionary *)options)
 {
-    TcpSocketClient* client = [TcpSockets findClient:cId callback:nil];
+    TcpSocketClient* client = [self findClient:cId callback:nil];
     if (!client) return;
 
     NSError *error = nil;
@@ -78,7 +69,7 @@ RCT_EXPORT_METHOD(write:(nonnull NSNumber*)cId
                   string:(NSString *)base64String
                   encoded:(BOOL)encoded
                   callback:(RCTResponseSenderBlock)callback) {
-    TcpSocketClient* client = [TcpSockets findClient:cId callback:callback];
+    TcpSocketClient* client = [self findClient:cId callback:callback];
     if (!client) return;
 
     // iOS7+
@@ -89,30 +80,43 @@ RCT_EXPORT_METHOD(write:(nonnull NSNumber*)cId
 
 RCT_EXPORT_METHOD(end:(nonnull NSNumber*)cId
                   callback:(RCTResponseSenderBlock)callback) {
-    [TcpSockets endClient:cId callback:callback];
+    [self endClient:cId callback:callback];
 }
 
 RCT_EXPORT_METHOD(destroy:(nonnull NSNumber*)cId
                  callback:(RCTResponseSenderBlock)callback) {
-    [TcpSockets destroyClient:cId callback:callback];
+    [self destroyClient:cId callback:callback];
 }
 
-- (void) onConnect:(TcpSocketClient*) client
+RCT_EXPORT_METHOD(listen:(nonnull NSNumber*)cId
+                  host:(NSString *)host
+                  port:(int)port)
+{
+    TcpSocketClient* client = [self findClient:cId callback:nil];
+    if (!client) return;
+
+    NSError *error = nil;
+    if (![client listen:host port:port error:&error])
+    {
+        [self onError:client withError:error];
+        return;
+    }
+}
+
+- (void)onConnect:(TcpSocketClient*) client
 {
     [self.bridge.eventDispatcher sendDeviceEventWithName:[NSString stringWithFormat:@"tcp-%@-event", client.id]
                                                     body:@{ @"event": @"connect" }];
 }
 
-- (void) onData:(TcpSocketClient*) client data:(NSData *)data
+- (void)onData:(NSNumber *)clientID data:(NSData *)data
 {
-    NSMutableDictionary<NSNumber *,TcpSocketClient *> *_clients = [TcpSockets clients];
-    NSNumber *clientID = [[_clients allKeysForObject:client] objectAtIndex:0];
     NSString *base64String = [data base64EncodedStringWithOptions:0];
     [self.bridge.eventDispatcher sendDeviceEventWithName:[NSString stringWithFormat:@"tcp-%@-event", clientID]
                                                     body:@{ @"event": @"data", @"data": base64String }];
 }
 
-- (void) onClose:(TcpSocketClient*) client withError:(NSError *)err
+- (void)onClose:(TcpSocketClient*) client withError:(NSError *)err
 {
     if (err) {
       [self onError:client withError:err];
@@ -121,7 +125,7 @@ RCT_EXPORT_METHOD(destroy:(nonnull NSNumber*)cId
     [self.bridge.eventDispatcher sendDeviceEventWithName:[NSString stringWithFormat:@"tcp-%@-event", client.id]
                                                     body:@{ @"event": @"close", @"data": err == nil ? @NO : @YES }];
 
-    NSMutableDictionary<NSNumber *,TcpSocketClient *> *_clients = [TcpSockets clients];
+    client.clientDelegate = nil;
     [_clients removeObjectForKey:client.id];
 }
 
@@ -132,10 +136,9 @@ RCT_EXPORT_METHOD(destroy:(nonnull NSNumber*)cId
 
 }
 
-+(TcpSocketClient*)findClient:(nonnull NSNumber*)cId callback:(RCTResponseSenderBlock)callback
+-(TcpSocketClient*)findClient:(nonnull NSNumber*)cId callback:(RCTResponseSenderBlock)callback
 {
-    NSMutableDictionary<NSNumber *,TcpSocketClient *> *_clients = [TcpSockets clients];
+    TcpSocketClient *client = _clients[cId];
-    TcpSocketClient *client = [_clients objectForKey:cId];
     if (!client) {
         if (!callback) {
             RCTLogError(@"%@.missing callback parameter.", [self class]);
@@ -149,10 +152,10 @@ RCT_EXPORT_METHOD(destroy:(nonnull NSNumber*)cId
     return client;
 }
 
-+(void) endClient:(nonnull NSNumber*)cId
+-(void)endClient:(nonnull NSNumber*)cId
            callback:(RCTResponseSenderBlock)callback
 {
-    TcpSocketClient* client = [TcpSockets findClient:cId callback:callback];
+    TcpSocketClient* client = [self findClient:cId callback:callback];
     if (!client) return;
 
     [client end];
@@ -160,22 +163,30 @@ RCT_EXPORT_METHOD(destroy:(nonnull NSNumber*)cId
     if (callback) callback(@[]);
 }
 
-+(void) destroyClient:(nonnull NSNumber*)cId
+-(void)destroyClient:(nonnull NSNumber*)cId
              callback:(RCTResponseSenderBlock)callback
 {
-    NSMutableDictionary<NSNumber *,TcpSocketClient *> *_clients = [TcpSockets clients];
+    TcpSocketClient* client = [self findClient:cId callback:nil];
-    TcpSocketClient* client = [TcpSockets findClient:cId callback:nil];
     if (!client) return;
 
     [client destroy];
     [_clients removeObjectForKey:cId];
 }
 
-+(void) closeAllSockets {
+-(void)onConnection:(TcpSocketClient *)client toClient:(NSNumber *)clientID {
-    NSMutableDictionary<NSNumber *,TcpSocketClient *> *_clients = [TcpSockets clients];
+    _clients[client.id] = client;
-    for (NSNumber* cId in _clients) {
+
-        [TcpSockets endClient:cId callback:nil];
+    [self.bridge.eventDispatcher sendDeviceEventWithName:[NSString stringWithFormat:@"tcp-%@-event", clientID]
-    }
+                                                    body:@{ @"event": @"connection", @"data": client.id }];
+}
+
+-(NSNumber*)generateRandomId {
+    int r = 0;
+    do {
+        r = (arc4random() % 1000) + 5001;
+    } while(_clients[@(r)]);
+
+    return @(r);
 }
 
 @end