Question

我正在尝试使用以下代码行向用户的名单添加新伙伴：

XMPPJID jid = [XMPPJID jidWithString:[NSString stringWithFormat:@"%@@localhost",
                                      addBuddyTextField.text]];
[appDelegate.xmppRoster addUser:jid withNickname:addBuddyTextField.text];

这很有效。其他用户收到订阅请求通知，他可以接受它，一切正常。新好友将被添加到XMPPRosterMemoryStorage中，并将显示在[XMPPRosterMemoryStorage unsortedUsers] NSArray上，以便可以在UI上显示当前所有好友的名单。

但是一旦用户退出并重新启动应用程序，整个名单就会消失，他添加了所有的好友。 [XMPPRoster fetchRoster]和以下方法[XMPPRosterMemoryStorage unsortedUsers]会返回一个没有任何项目的NSArray。

我是否必须将好友更新（添加，删除）发布到XMPPServer？或者我的XMPPserver（ejabberd）不支持名册？

以下是我用来激活XMPPRoster的代码：

xmppRosterMemStorage = [[XMPPRosterMemoryStorage alloc] init];
xmppRoster = [[XMPPRoster alloc] initWithRosterStorage:xmppRosterMemStorage
                                         dispatchQueue:dispatch_get_main_queue()];
[xmppRoster addDelegate:self delegateQueue:dispatch_get_main_queue()];
xmppRoster.autoAcceptKnownPresenceSubscriptionRequests = false;
xmppRoster.autoFetchRoster = true;
[xmppRoster activate:xmppStream];
[xmppRoster fetchRoster];

Answer 1

从上面的讨论中，听起来你的服务器正好收到您的名册请求。使用您的设置代码我无法重现您遇到的问题。

您可以尝试打开日志记录并查看是否阅读协议日志可以帮助您了解正在发生的事情：

#import "DDTTYLogger.h"

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
    [DDLog addLogger:[DDTTYLogger sharedInstance]];

    ...

或者在您的服务器上试用我的测试代码，如果问题消失，请从那里开始工作：

#import "AppDelegate.h"
#import "XMPPFramework.h"
#import "DDTTYLogger.h"
#import "DDLog.h"

static const int ddLogLevel = LOG_LEVEL_VERBOSE;

NSString * const XMPPAuthenticationMethodPlain = @"Plain";
NSString * const XMPPAuthenticationMethodDigestMD5 = @"Digest-MD5";

NSString * const OptionHostName = @"...";
NSUInteger const OptionPort = 5222;
BOOL const OptionOldSchoolSSL = NO;
NSString * const OptionJID = @"...";
NSString * const OptionAuthenticationMethod = @"Digest-MD5";
NSString * const OptionPassword = @"...";

@interface AppDelegate () <XMPPStreamDelegate, XMPPRosterMemoryStorageDelegate>

@property (retain) XMPPStream *xmppStream;
@property (retain) XMPPRosterMemoryStorage *xmppRosterMemStorage;
@property (retain) XMPPRoster *xmppRoster;

@end

@implementation AppDelegate

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
    [DDLog addLogger:[DDTTYLogger sharedInstance]];

    self.xmppStream = [[XMPPStream alloc] init];
    [self.xmppStream addDelegate:self delegateQueue:dispatch_get_main_queue()];
    self.xmppStream.hostName = OptionHostName;
    self.xmppStream.hostPort = OptionPort;
    self.xmppStream.myJID = [XMPPJID jidWithString:OptionJID];

    self.xmppRosterMemStorage = [[XMPPRosterMemoryStorage alloc] init];
    self.xmppRoster = [[XMPPRoster alloc] initWithRosterStorage:self.xmppRosterMemStorage
                                             dispatchQueue:dispatch_get_main_queue()];
    [self.xmppRoster addDelegate:self delegateQueue:dispatch_get_main_queue()];
    [self.xmppRoster activate:self.xmppStream];

    NSError *error = nil;
    if (OptionOldSchoolSSL)
        [self.xmppStream oldSchoolSecureConnect:&error];
    else
        [self.xmppStream connect:&error];
}

-(void)applicationWillTerminate:(NSNotification *)notification {
    [self.xmppStream removeDelegate:self];
    [self.xmppStream disconnect];
}

-(void)xmppStreamDidConnect:(XMPPStream *)sender {
    Class authClass = nil;
    if ([OptionAuthenticationMethod isEqual:XMPPAuthenticationMethodPlain])
        authClass = [XMPPPlainAuthentication class];
    else if ([OptionAuthenticationMethod isEqual:XMPPAuthenticationMethodDigestMD5])
        authClass = [XMPPDigestMD5Authentication class];
    else {
        DDLogWarn(@"Unrecognized auhthentication method '%@', falling back on Plain",
                  OptionAuthenticationMethod);
        authClass = [XMPPPlainAuthentication class];
    }
    id<XMPPSASLAuthentication> auth = [[authClass alloc] initWithStream:sender
                                                               password:OptionPassword];
    NSError *error = nil;
    if (![sender authenticate:auth error:&error])
        NSLog(@"Error authenticating: %@", error);
}

-(void)xmppRosterDidPopulate:(XMPPRosterMemoryStorage *)sender {
    NSLog(@"users: %@", [sender unsortedUsers]);
    // My subscribed users do print out
}

@end

如果我将名册设置代码移动到-xmppStreamDidAuthenticate，它也有效，但在这种情况下我需要手动调用-fetchRoster。

XMPPRoster不会向XMPP服务器发布新伙伴

1 个答案: