seems somthing get blocked...

ios/iosremote/iosremote/Communication/Client.h

@@ -7,9 +7,10 @@
  */
 
 #import <Foundation/Foundation.h>
-#import "Server.h"
-#import "CommunicationManager.h"
-#import "CommandInterpreter.h"
+
+@class Server;
+@class CommunicationManager;
+@class CommandInterpreter;
 
 @interface Client : NSObject
 
@@ -18,7 +19,7 @@
 @property (nonatomic, strong) NSString* name;
 @property (nonatomic, weak) Server* server;
 
-- (BOOL) connect;
+- (void) connect;
 - (void) disconnect;
 
 - (id) initWithServer:(Server*)server

ios/iosremote/iosremote/Communication/Client.m

@@ -20,14 +20,11 @@
 @property (nonatomic, strong) NSOutputStream* outputStream;
 
 @property uint mPort;
-
 @property (nonatomic, weak) CommandInterpreter* receiver;
 @property (nonatomic, weak) CommunicationManager* comManager;
 
 @end
 
-NSCondition *connected;
-
 @implementation Client
 
 @synthesize inputStream = _mInputStream;
@@ -39,6 +36,7 @@ NSCondition *connected;
 @synthesize connected = _mReady;
 @synthesize receiver = _receiver;
 
+
 - (id) initWithServer:(Server*)server
             managedBy:(CommunicationManager*)manager
         interpretedBy:(CommandInterpreter*)receiver
@@ -46,7 +44,6 @@ NSCondition *connected;
     self = [self init];
     if (self)
     {
-        connected = [NSCondition new];
         self.connected = NO;
         self.name = [[UIDevice currentDevice] name];
         self.pin = [NSNumber numberWithInteger:[self getPin]];
@@ -111,24 +108,25 @@ NSCondition *connected;
     [self.outputStream write:(uint8_t *)[data bytes] maxLength:[data length]];
 }
 
+int count = 0;
+
 - (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)eventCode {
-    
     switch(eventCode) {
         case NSStreamEventOpenCompleted:{
             NSLog(@"Connection established");
-            [connected lock];
-            NSArray *temp = [[NSArray alloc]initWithObjects:@"LO_SERVER_CLIENT_PAIR\n", self.name, @"\n", self.pin, @"\n\n", nil];
-            NSString *command = [temp componentsJoinedByString:@""];
-            [self sendCommand:command];
             self.connected = YES;
-            [connected signal];
-            [connected unlock];
+            if (count == 1) {
+                [[NSNotificationCenter defaultCenter]postNotificationName:@"connection.status.connected" object:nil];
+            } else {
+                count++;
+            }
+
             }
-            
             break;
         case NSStreamEventErrorOccurred:{
             NSLog(@"Connection error occured");
             [self disconnect];
+            [[NSNotificationCenter defaultCenter]postNotificationName:@"connection.status.disconnected" object:nil];
             }
             break;
         case NSStreamEventHasBytesAvailable:
@@ -179,18 +177,9 @@ NSCondition *connected;
     self.connected = NO;
 }
 
-- (BOOL) connect
+- (void) connect
 {
     [self streamOpenWithIp:self.server.serverAddress withPortNumber:self.mPort];
-    [connected lock];
-    if([connected waitUntilDate:[NSDate dateWithTimeIntervalSinceNow:5]]){
-        [connected unlock];
-        return YES;
-    } else {
-        [self disconnect];
-        [connected unlock];
-        return NO;
-    }
 }
 
 

ios/iosremote/iosremote/Communication/CommandInterpreter.h

@@ -8,7 +8,8 @@
 
 
 #import <Foundation/Foundation.h>
-#import "SlideShow.h"
+
+@class SlideShow;
 
 @interface CommandInterpreter : NSObject
 

ios/iosremote/iosremote/Communication/CommandTransmitter.h

@@ -7,7 +7,9 @@
 //
 
 #import <Foundation/Foundation.h>
-#import "Client.h"
+
+@class Client;
+
 
 @interface CommandTransmitter : NSObject
 

ios/iosremote/iosremote/Communication/CommandTransmitter.m

@@ -24,6 +24,11 @@
 {
     self = [self init];
     self.client = client;
+    
+    NSArray *temp = [[NSArray alloc]initWithObjects:@"LO_SERVER_CLIENT_PAIR\n", self.client.name, @"\n", self.client.pin, @"\n\n", nil];
+    NSString *command = [temp componentsJoinedByString:@""];
+    
+    [self.client sendCommand:command];
     return self;
 }
 

ios/iosremote/iosremote/Communication/CommunicationManager.h

@@ -8,9 +8,10 @@
 
 
 #import <Foundation/Foundation.h>
-#import "Client.h"
-#import "Server.h"
-#import "CommandInterpreter.h"
+
+@class Client;
+@class Server;
+@class CommandInterpreter;
 
 #define MSG_SLIDESHOW_STARTED @"SLIDESHOW_STARTED"
 #define MSG_SLIDE_CHANGED @"SLIDE_CHANGED"
@@ -48,10 +49,11 @@ enum ConnectionState : NSInteger {
     CONNECTED
 };
 
-dispatch_queue_t backgroundQueue;
-
 @interface CommunicationManager : NSObject
 
+- (void) connectToServer:(Server*)server;
+
 @property ConnectionState state;
+@property (nonatomic, strong) id delegate;
 
 @end

ios/iosremote/iosremote/Communication/CommunicationManager.m

@@ -12,6 +12,7 @@
 #import "Server.h"
 #import "CommandTransmitter.h"
 #import "CommandInterpreter.h"
+#import "libreoffice_sdremoteViewController.h"
 #import <dispatch/dispatch.h>
 
 @interface CommunicationManager()
@@ -19,7 +20,9 @@
 @property (nonatomic, strong) Client* client;
 @property (nonatomic, strong) CommandInterpreter* interpreter;
 @property (nonatomic, strong) CommandTransmitter* transmitter;
-@property (atomic, strong) NSMutableArray* servers;
+@property (atomic, strong) NSMutableSet* servers;
+@property (nonatomic, strong) id connectionConnectedObserver;
+@property (nonatomic, strong) id connectionDisconnectedObserver;
 
 @end
 
@@ -31,8 +34,9 @@
 @synthesize interpreter = _interpreter;
 @synthesize transmitter = _transmitter;
 @synthesize servers = _servers;
-
-NSLock *connectionLock;
+@synthesize delegate = _delegate;
+@synthesize connectionConnectedObserver = _connectionConnectedObserver;
+@synthesize connectionDisconnectedObserver = _connectionDisconnectedObserver;
 
 + (CommunicationManager *)sharedComManager
 {
@@ -47,15 +51,40 @@ NSLock *connectionLock;
     return sharedComManager;
 }
 
+
+- (void) connectionStatusHandler:(NSNotification *)note
+{
+    if([[note name] isEqualToString:@"connection.status.connected"]){
+        NSLog(@"Connected");
+        self.transmitter = [[CommandTransmitter alloc] initWithClient:self.client];
+        self.state = CONNECTED;
+        [self.delegate setPinLabelText:[NSString stringWithFormat:@"%@", [self getPairingPin]]];
+    } else if ([[note name] isEqualToString:@"connection.status.disconnected"]){
+        NSLog(@"Connection Failed");
+        self.state = DISCONNECTED;
+        [self.client disconnect];
+    }
+}
+
 - (id) init
 {
     self = [super init];
     self.state = DISCONNECTED;
-    connectionLock = [NSLock new];
-    backgroundQueue = dispatch_queue_create("org.libreoffice.iosremote", NULL);
+    
+    [[NSNotificationCenter defaultCenter]addObserver: self
+                                            selector: @selector(connectionStatusHandler:)
+                                                name: @"connection.status.connected"
+                                              object: nil];
+    [[NSNotificationCenter defaultCenter]addObserver: self
+                                            selector: @selector(connectionStatusHandler:)
+                                                name: @"connection.status.disconnected"
+                                              object: nil];
+    
     return self;
 }
 
+
+
 - (id) initWithExistingServers
 {
     self = [self init];
@@ -70,36 +99,28 @@ NSLock *connectionLock;
     {
         NSArray *oldSavedArray = [NSKeyedUnarchiver unarchiveObjectWithData:dataRepresentingExistingServers];
         if (oldSavedArray != nil)
-            self.servers = [[NSMutableArray alloc] initWithArray:oldSavedArray];
+            self.servers = [[NSMutableSet alloc] initWithArray:oldSavedArray];
         else
-            self.servers = [[NSMutableArray alloc] init];
+            self.servers = [[NSMutableSet alloc] init];
     }
+    return self;
 }
 
 - (void) connectToServer:(Server*)server
 {
-    dispatch_async(backgroundQueue, ^(void) {
-        if ([connectionLock tryLock]) {
+    [self.servers addObject:server];
+    if (self.state == CONNECTING || self.state == CONNECTED) {
+        return;
+    } else {
             self.state = CONNECTING;
             [self.client disconnect];
             // initialise it with a given server
             self.client = [[Client alloc]initWithServer:server managedBy:self interpretedBy:self.interpreter];
-            if([self.client connect]){
-                self.state = CONNECTED;
-                self.transmitter = [[CommandTransmitter alloc] initWithClient:self.client];
-            }
-            else{
-                // streams closing is handled by client itself in case of connection failure
-                self.state = DISCONNECTED;
-            }
-            [connectionLock unlock];
-        }
-        else
-            // Already a threading working on that ... and that thread will unlock in 5 seconds anyway, so just return for now. 
-            return;
-    });
+            [self.client connect];
+    }
 }
 
+
 - (NSNumber *) getPairingPin{
     return [self.client pin];
 }

ios/iosremote/iosremote/Communication/SlideShow.h

@@ -8,7 +8,8 @@
 
 
 #import <Foundation/Foundation.h>
-#import "slideShowViewController.h"
+
+@class slideShowViewController;
 
 @interface SlideShow : NSObject
 

ios/iosremote/iosremote/en.lproj/MainStoryboard_iPad.storyboard

 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="2.0" toolsVersion="3084" systemVersion="12D78" targetRuntime="iOS.CocoaTouch.iPad" propertyAccessControl="none" initialViewController="KFV-Ae-zm8">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="2.0" toolsVersion="3084" systemVersion="12E55" targetRuntime="iOS.CocoaTouch.iPad" propertyAccessControl="none" initialViewController="KFV-Ae-zm8">
     <dependencies>
         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="2083"/>
     </dependencies>
@@ -12,7 +12,7 @@
                         <rect key="frame" x="0.0" y="64" width="768" height="960"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
-                            <textField opaque="NO" clipsSubviews="YES" contentMode="scaleToFill" contentHorizontalAlignment="left" contentVerticalAlignment="center" text="172.25.19.11" borderStyle="roundedRect" minimumFontSize="17" id="9w1-Ym-HcF">
+                            <textField opaque="NO" clipsSubviews="YES" contentMode="scaleToFill" contentHorizontalAlignment="left" contentVerticalAlignment="center" text="192.168.40.101" borderStyle="roundedRect" minimumFontSize="17" id="9w1-Ym-HcF">
                                 <rect key="frame" x="234" y="402" width="301" height="30"/>
                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="14"/>
@@ -130,11 +130,11 @@
                         <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                         <subviews>
                             <imageView userInteractionEnabled="NO" contentMode="scaleToFill" id="T6z-xu-j8h">
-                                <rect key="frame" x="0.0" y="0.0" width="768" height="458"/>
+                                <rect key="frame" x="14" y="20" width="741" height="442"/>
                                 <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                             </imageView>
                             <webView contentMode="scaleToFill" id="y0E-Wp-yUc">
-                                <rect key="frame" x="20" y="492" width="728" height="378"/>
+                                <rect key="frame" x="20" y="513" width="728" height="378"/>
                                 <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES" heightSizable="YES"/>
                                 <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="calibratedRGB"/>
                             </webView>

ios/iosremote/iosremote/libreoffice_sdremoteViewController.h

@@ -11,9 +11,9 @@
 @interface libreoffice_sdremoteViewController : UIViewController
 
 - (IBAction)connectToServer:(id)sender;
+- (void)setPinLabelText:(NSString*)text;
 
 @property (weak, nonatomic) IBOutlet UILabel *pinLabel;
-
 @property (weak, nonatomic) IBOutlet UITextField *ipAddressTextEdit;
 
 @end

ios/iosremote/iosremote/libreoffice_sdremoteViewController.m

@@ -9,15 +9,14 @@
 
 #import "libreoffice_sdremoteViewController.h"
 #import "Server.h"
-#import "Client.h"
 #import "slideShowViewController.h"
+#import "CommunicationManager.h"
 
 @interface libreoffice_sdremoteViewController ()
 
 // For debug use, will use a manager to manage server and client instead
 @property (nonatomic, strong) Server* server;
-@property (nonatomic, strong) Client* client;
-@property (nonatomic, strong) CommandInterpreter * interpreter;
+@property (nonatomic, strong) CommunicationManager *comManager;
 @property (nonatomic, weak) NSNotificationCenter* center;
 @property (nonatomic, strong) id slideShowPreviewStartObserver;
 
@@ -26,9 +25,8 @@
 @implementation libreoffice_sdremoteViewController
 
 @synthesize server = _server;
-@synthesize client = _client;
 @synthesize center = _center;
-@synthesize interpreter = _interpreter;
+@synthesize comManager = _comManager;
 @synthesize slideShowPreviewStartObserver = _slideShowPreviewStartObserver;
 
 - (void)viewDidLoad
@@ -48,7 +46,6 @@
 - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
     if ([segue.identifier isEqualToString:@"slidesPreviewSegue"]) {
         slideShowViewController *destViewController = segue.destinationViewController;
-        destViewController.slideshow = [self.interpreter slideShow];
         [destViewController.slideshow setDelegate:destViewController];
     }
 }
@@ -62,22 +59,19 @@
 
 - (IBAction)connectToServer:(id)sender {
     NSString * address = [self.ipAddressTextEdit text];
-    self.interpreter = [[CommandInterpreter alloc] init];
-    self.server = [[Server alloc] initWithProtocol:NETWORK atAddress:address ofName:@"Server"];
-    self.client = [[Client alloc] initWithServer:self.server managedBy:nil interpretedBy:self.interpreter];
-    [self.client connect];
-    
-    if([self.client connected])
-    {
-        [self.pinLabel setText:[NSString stringWithFormat:@"%@", self.client.pin]];
-    }
+    self.comManager = [[CommunicationManager alloc] init];
+    self.server = [[Server alloc] initWithProtocol:NETWORK atAddress:address ofName:@"Macbook Pro Retina"];
+    [self.comManager setDelegate:self];
+    [self.comManager connectToServer:self.server];
 }
 
-
 - (void)viewDidUnload {
     [self setIpAddressTextEdit:nil];
     [self setPinLabel:nil];
-    [self setPinLabel:nil];
     [super viewDidUnload];
 }
+
+- (void)setPinLabelText:(NSString *)text{
+    [self.pinLabel setText:text];
+}
 @end

ios/iosremote/iosremote/slideShowViewController.h

@@ -14,7 +14,7 @@
 @property (weak, nonatomic) IBOutlet UIImageView *image;
 @property (weak, nonatomic) IBOutlet UIWebView *lecturer_notes;
 
-@property (nonatomic, strong) SlideShow *slideshow;
+@property (nonatomic, strong) SlideShow* slideshow;
 @property (nonatomic, strong) id slideShowImageReadyObserver;
 @property (nonatomic, strong) id slideShowNoteReadyObserver;