When the timeout to reconnect, prompts the clientid is connected, return to the state of “ConnectionRefusedIdentiferRejected”

[shanyulaile]

When the timeout to reconnect, prompts the clientid is connected, return to the state of “ConnectionRefusedIdentiferRejected”
My code is as follows

self.client = [[MQTTClient alloc] initWithClientId:clientID cleanSession:YES];

[self.client connectToHost:kMQTTServerHost completionHandler:^(MQTTConnectionReturnCode code) { SYLog(@"client is connected with id %@", clientID);

        if (code == ConnectionAccepted) {
            SYLog(@"did connect...");
            // The client is connected when this completion handler is called
            SYLog(@"client is connected with id %@", clientID);
            // Subscribe to the topic
            [weakself.client subscribe:[NSString stringWithFormat:@"%@_%@", kTopic, usercount.enterprise_code] withCompletionHandler:^(NSArray *grantedQos) {
                // The client is effectively subscribed to the topic when this completion handler is called
                SYLog(@"subscribed to topic %@", [NSString stringWithFormat:@"%@_%@", kTopic, usercount.enterprise_code]);
                BOOL res = [weakself.client enableBackgrounding];
                if (!res) {
                    SYLog(@"Failed to enable background socket...");
                }

            }];

        } else {
            SYLog(@"Failed to connect to server...");
        }
    }];

[application setKeepAliveTimeout:600 handler:^{
    SYLog(@"timeout handler activited...");
        [weakself.client reconnect];
}];