Parse + PubNub :私聊

Question

我想和Parse和Pubnub私下聊聊。当用户收到来自另一个朋友的图片时，他可以点击“回复消息”，这将打开一个新的视图，这是两个朋友之间的私人聊天。我在框架中使用"BubbleView“来提供iOS消息传递方面。如何在Pubnub中创建私人频道？我已经添加了

PFUser *user = [PFUser currentUser];

channel = [PNChannel channelWithName:user.objectId];

但这只会影响到正在使用应用程序的用户的通道，而不会影响这两个人的通道...？使用我的代码，我可以接收我自己的消息，控制台显示: PubNub (xxxxxxxxxx) SUBSCRIBED ON CHANNELS：(“PNChannel(Xxxxxxxxxx) objectID(user from parse who User Parse))”message received:我发送的消息

下面是我的代码：

ChatViewController.h：

#import "MessagesViewController.h"
#import "PNImports.h"

@interface ChatViewController : MessagesViewController

@property (strong, nonatomic) NSMutableArray *messages;

@end

ChatViewController.m：

#import "ChatViewController.h"
#import <Parse/Parse.h>

@interface ChatViewController ()

@end
PNChannel *channel;
id message;
NSDate *receiveDate;
NSString *text;
@implementation ChatViewController

#pragma mark - View lifecycle
- (void)viewDidLoad
{

    [super viewDidLoad];
    self.title = @"Messages";
    self.messages = [[NSMutableArray alloc] initWithObjects:
                     @"Testing some messages here.", @"lol",
                     nil];
    UIButton *exitButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [exitButton addTarget:self action:@selector(backToInboxView) forControlEvents:UIControlEventTouchUpInside];
    [exitButton setTitle:@"Inbox" forState:UIControlStateNormal];
    exitButton.frame = CGRectMake(0.0, 0.0, 60, 60);
    [self.view addSubview:exitButton];

    // #1 Define client configuration
    PNConfiguration *myConfig = [PNConfiguration configurationForOrigin:@"pubsub.pubnub.com"
                                                             publishKey:@"demo"
                                                           subscribeKey:@"demo"
                                                              secretKey:nil];
    // #2 make the configuration active
    [PubNub setConfiguration:myConfig];
    // #3 Connect to the PubNub
    [PubNub connect];

   }


#pragma mark - Table view data source
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return self.messages.count;
}

#pragma mark - Messages view controller
- (BubbleMessageStyle)messageStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return (indexPath.row % 2) ? BubbleMessageStyleIncoming : BubbleMessageStyleOutgoing;
}

- (NSString *)textForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return [self.messages objectAtIndex:indexPath.row];
}

- (void)sendPressed:(UIButton *)sender withText:text
{
    [self.messages addObject:text];
    if((self.messages.count - 1) % 2)
        [MessageSoundEffect playMessageSentSound];
    else
        [MessageSoundEffect playMessageReceivedSound];
    PFUser *user       = [PFUser currentUser];
    channel = [PNChannel channelWithName:user.objectId];
    // Receive Messages Sent to Me!
    [PubNub subscribeOnChannel:channel];
    // Send a Message to Sally
    [PubNub sendMessage:text toChannel:channel];
    [self finishSend];
}

- (void)backToInboxView{
    [self.navigationController popToRootViewControllerAnimated:YES];
}


@end

在Appdelegate.m中：

- (void)pubnubClient:(PubNub *)client didSubscribeOnChannels:(NSArray *)channels {
    NSLog(@"DELEGATE: Subscribed to channel:%@", channels);
}
- (void)pubnubClient:(PubNub *)client didReceiveMessage:(PNMessage *)message {
    NSLog(@"Message received: %@", message.message);
}

Answer 1

虽然是在JavaScript中，但这是一个关于如何使用PubNub实现聊天功能(具有私人+公共通道)的非常详细的教程：

http://www.pubnub.com/blog/javascript-private-chat-api-with-access-control/

PubNub ObjectiveC客户端也具有相同的功能。

PubNub通道本身就是通道--通道上没有说明通道是私有还是公共的属性。要模拟“私有”，您可以为私有通道创建难以猜测的名称(并且不要给出这些名称)，但随着时间的推移，这不是最安全的解决方案。

要真正使PubNub通道成为私有通道，请使用PAM特性(如本教程中所述)。这将允许您授予和撤销特定通道的授权令牌，因此即使有人猜测了私有通道的名称，他们也无法在不知道auth令牌的情况下访问它。

要进一步锁定它，您可以使用内置加密，通过安全的(SSL) PubNub连接运行它，您就有了一个非常安全和可伸缩的解决方案。