Firebase Messaging: Fails to receive a notifications in iOS

[SidoPillai]

Step 1: Describe your environment

• Xcode version: 12.5.1
• Firebase SDK version: 8.6.0
• Installation method: Zip file
• Firebase Component: Messaging

Step 2: Describe the problem

Device doesn't receive a notification instead whenever a message arrives it dumps the following to the logs

2021-09-02 10:52:19.984833-0700 AppStudioApp[1047:649086] [] nw_protocol_instance_access_flow_state [C1.1.1:2] Failed to find flow 1076131f8
2021-09-02 10:52:19.988414-0700 AppStudioApp[1047:649086] [] nw_protocol_instance_access_flow_state [C1.1.1:2] Failed to find flow 1076131f8
2021-09-02 10:52:20.013324-0700 AppStudioApp[1047:649270] [] nw_protocol_instance_access_flow_state [C1.1.1:2] Failed to find flow 1076131f8
2021-09-02 10:52:20.013568-0700 AppStudioApp[1047:649270] [] nw_protocol_instance_access_flow_state [C1.1.1:2] Failed to find flow 1076131f8
2021-09-02 10:52:20.014694-0700 AppStudioApp[1047:649270] [] nw_protocol_instance_access_flow_state [C1.1.1:2] Failed to find flow 1076131f8
2021-09-02 10:52:20.015046-0700 AppStudioApp[1047:649270] [connection] nw_endpoint_handler_set_adaptive_read_handler [C2 2607:f8b0:4007:80e::200a.443 ready channel-flow (satisfied (Path is satisfied), viable, interface: en0, ipv4, ipv6, dns)] unregister notification for read_timeout failed
2021-09-02 10:52:20.015198-0700 AppStudioApp[1047:649270] [connection] nw_endpoint_handler_set_adaptive_write_handler [C2 2607:f8b0:4007:80e::200a.443 ready channel-flow (satisfied (Path is satisfied), viable, interface: en0, ipv4, ipv6, dns)] unregister notification for write_timeout failed
2021-09-02 10:52:20.015328-0700 AppStudioApp[1047:649270] [connection] nw_endpoint_handler_set_keepalive_handler [C2 2607:f8b0:4007:80e::200a.443 ready channel-flow (satisfied (Path is satisfied), viable, interface: en0, ipv4, ipv6, dns)] unregister notification for keepalive failed
2021-09-02 10:52:20.015699-0700 AppStudioApp[1047:649270] [] nw_protocol_instance_access_flow_state [C1.1.1:2] Failed to find flow 1076131f8
2021-09-02 10:52:20.016971-0700 AppStudioApp[1047:649270] [] nw_protocol_instance_access_flow_state [C1.1.1:2] Failed to find flow 10750cdc8
2021-09-02 10:52:20.017515-0700 AppStudioApp[1047:649270] [connection] nw_endpoint_handler_set_adaptive_read_handler [C1.1.1 2607:f8b0:4007:80e::200a.443 ready channel-flow (satisfied (Path is satisfied), viable, interface: en0, ipv4, ipv6, dns)] unregister notification for read_timeout failed
2021-09-02 10:52:20.017635-0700 AppStudioApp[1047:649270] [connection] nw_endpoint_handler_set_adaptive_write_handler [C1.1.1 2607:f8b0:4007:80e::200a.443 ready channel-flow (satisfied (Path is satisfied), viable, interface: en0, ipv4, ipv6, dns)] unregister notification for write_timeout failed
2021-09-02 10:52:20.017744-0700 AppStudioApp[1047:649270] [connection] nw_endpoint_handler_set_keepalive_handler [C1.1.1 2607:f8b0:4007:80e::200a.443 ready channel-flow (satisfied (Path is satisfied), viable, interface: en0, ipv4, ipv6, dns)] unregister notification for keepalive failed
2021-09-02 10:52:20.030810-0700 AppStudioApp[1047:649086] [] nw_protocol_instance_access_flow_state [C1.1.1:2] Failed to find flow 1076131f8

Steps to reproduce:

What happened? How can we make the problem occur? Manually link the dependencies in the project via QMAKE.

If you have a downloadable sample project that reproduces the bug you're reporting, you will likely receive a faster response on your issue.

build-AppStudioFirebase-Qt_5_15_5_for_iOS-Release.zip

Relevant Code:

Replace the following code in the sample project. Based on my observation It failed in both cases.

#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>

#import <UserNotifications/UserNotifications.h>

#include "QmlApplication.h"
#include <QObject>
#include <QDebug>

#include <Firebase.h>

//------------------------------------------------------------------------------

@interface QIOSApplicationDelegate
@end
//Add a category to QIOSApplicationDelegate
@interface QIOSApplicationDelegate (QBackgroundAudioDelegate) <UNUserNotificationCenterDelegate, FIRMessagingDelegate>
@end

//------------------------------------------------------------------------------

NSString * const kGCMMessageIDKey = @"gcm.message_id";

@implementation QIOSApplicationDelegate (QBackgroundAudioDelegate)
- (BOOL) application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [FIRApp configure];
    [FIRMessaging messaging].delegate = self;

    
    if ([UNUserNotificationCenter class] != nil)
    {
        [UNUserNotificationCenter currentNotificationCenter].delegate = self;
        UNAuthorizationOptions authOptions = UNAuthorizationOptionAlert | UNAuthorizationOptionSound | UNAuthorizationOptionBadge;
        [[UNUserNotificationCenter currentNotificationCenter] requestAuthorizationWithOptions:authOptions completionHandler:^(BOOL granted, NSError * _Nullable errpr)
        {
            if (granted)
            {
                NSLog(@"Granted == true");
            }
            else
            {
                NSLog(@"Granted == false");
            }
        }];
    }

    [application registerForRemoteNotifications];
    NSLog(@"registered for remote notifications");

    return YES;
}

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
    const char *data = (char *)[deviceToken bytes];
    NSMutableString *token = [NSMutableString string];
    for (NSUInteger i = 0; i < [deviceToken length]; i++)
    {
        [token appendFormat:@"%02.2hhX", data[i]];
    }

    NSLog(@"Push Notification Token: %@", [token copy]);

    NSLog(@"Did Register for Remote Notifications with Device Token (%@)", deviceToken);
    [FIRMessaging messaging].APNSToken = deviceToken;
}

- (void) application:(UIApplication *)app
        didFailToRegisterForRemoteNotificationsWithError:(NSError *)err
{
    NSLog(@"Remote notification support is unavailable due to error: %@", err);
}

-(BOOL) application:(UIApplication *)application continueUserActivity:(NSUserActivity *)userActivity restorationHandler:(void (^)(NSArray * _Nullable))restorationHandler
{
    if ([userActivity.activityType isEqualToString: NSUserActivityTypeBrowsingWeb])
    {
        NSURL* nsUrl = userActivity.webpageURL;

        if (nsUrl == nil) return NO;

        QUrl url = QUrl(QString::fromNSString(nsUrl.absoluteString));

        auto qmlApplication = qobject_cast<QmlApplication*>(QmlApplication::instance());

        qDebug() << Q_FUNC_INFO << url << ":" << qmlApplication;

        if (qmlApplication)
        {
            qmlApplication->openUrl(url);
        }
        else
        {
            QmlApplication::setOpenUrl(url);
        }
    }
    return YES;
}

- (void) applicationDidReceiveMemoryWarning:(UIApplication*)application
{
    qDebug() << Q_FUNC_INFO;

    auto qmlApplication = qobject_cast<QmlApplication*>(QmlApplication::instance());

    if (qmlApplication)
    {
        qmlApplication->lowMemory();
    }
}

//------------------------------------------------------------------------------


- (void) application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    NSLog(@"TEST %@", userInfo);

    if (userInfo[kGCMMessageIDKey])
    {
        NSLog(@"Message ID %@", userInfo[kGCMMessageIDKey]);
    }
    
    [self createNotification: userInfo];
}

//------------------------------------------------------------------------------

- (void) application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
    NSLog(@"Received notification: %@", userInfo);

    [self createNotification: userInfo];

    auto qmlApplication = qobject_cast<QmlApplication*>(QmlApplication::instance());

    NSError * err;
    NSData * jsonData = [NSJSONSerialization  dataWithJSONObject:userInfo[@"payload"] options:0 error:&err];
    NSString * myString = [[NSString alloc] initWithData:jsonData   encoding:NSUTF8StringEncoding];

    NSLog(@"Yes %@",myString);

    if (qmlApplication)
    {
        qmlApplication->remoteMessageReceived(QString::fromNSString(myString));
    }

    completionHandler(UIBackgroundFetchResultNewData);
}

//------------------------------------------------------------------------------

- (void) createNotification:(NSDictionary *) data
{
    NSDictionary* config = data[@"aps"];
    NSString* notificationTitle = config[@"title"];
    NSString* notificationBody  = config[@"body"];

    UNMutableNotificationContent *content = [[UNMutableNotificationContent alloc] init];
    content.title = notificationTitle;
    content.body = notificationBody;
    content.sound = [UNNotificationSound defaultSound];
    content.userInfo = data[@"payload"];

    UNTimeIntervalNotificationTrigger *trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:1.0 repeats:NO];

    UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:@"new-message" content:content trigger:trigger];
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
//    center.delegate = self;
    [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error)
    {
        if (error)
        {
            NSLog(@"Local Notification failed");
        }
    }];
}

- (void) userNotificationCenter:(UNUserNotificationCenter *) center
        willPresentNotification:(UNNotification *) notification
            withCompletionHandler:(void (^)(UNNotificationPresentationOptions options)) completionHandler
{
    Q_UNUSED(center)
    Q_UNUSED(notification)

    completionHandler(UNNotificationPresentationOptionAlert);
}

- (void) userNotificationCenter:(UNUserNotificationCenter *) center
        didReceiveNotificationResponse:(UNNotificationResponse *) response
            withCompletionHandler:(void (^)()) completionHandler
{
    NSLog( @"Handle push from background or closed" );
    // if you set a member variable in didReceiveRemoteNotification, you  will know if this is from closed or background
    NSLog(@"%@", response.notification.request.content.userInfo);
}

//------------------------------------------------------------------------------

- (void) messaging:(FIRMessaging *)messaging didReceiveRegistrationToken:(NSString *)fcmToken
{
    NSLog(@"FCM registration token: %@", fcmToken);
}

@end

[rizafran]

Hi @siddeshpillai,

Based on the files you provided, this doesn't look like the usual setup for iOS. Could you confirm if you're using the C++ SDK? Thanks.

[SidoPillai]

@rizafran I'm using Qt Framework for building this iOS app. Yes, I confirm I'm using the C++ SDK. I'm linking them manually using QMAKE.

[morganchen12]

@siddeshpillai are you able to receive notifications sent directly via APNs?

[SidoPillai]

@morganchen12 No I haven't tried that yet. But I can give it a shot and keep you posted.

[google-oss-bot]

Hey @siddeshpillai. We need more information to resolve this issue but there hasn't been an update in 5 weekdays. I'm marking the issue as stale and if there are no new updates in the next 5 days I will close it automatically.

If you have more information that will help us get to the bottom of this, just add a comment!

[SidoPillai]

@morganchen12 Able to receive notifications sent directly via APNs.

[rizafran]

Hi @siddeshpillai, sorry for not getting back to you in this. I'm just wondering if you're still encountering the issue on the latest SDK version?

[google-oss-bot]

Hey @siddeshpillai. We need more information to resolve this issue but there hasn't been an update in 5 weekdays. I'm marking the issue as stale and if there are no new updates in the next 5 days I will close it automatically.

If you have more information that will help us get to the bottom of this, just add a comment!

[google-oss-bot]

Since there haven't been any recent updates here, I am going to close this issue.

@siddeshpillai if you're still experiencing this problem and want to continue the discussion just leave a comment here and we are happy to re-open this.