messaging

问题 (or set multiple objects with one value) Is there a way to send multiple objects one message in one line. So like [someObject, otherObject reset]; like in LUA scripts (which I believe is C?) you can set mutliple objects: someThing, otherThing = 1 , 0 回答1: In short, no, neither Objective-C nor C support this feature. As an extreme measure, you can use -[NSArray makeObjectsPerformSelector:] and -[NSArray makeObjectsPerformSelector:withObject:] , such as [[NSArray arrayWithObjects:someObject,

问题 I am struggling with FCM notifications on Android. The issue is only when the app is closed and not running. I am trying to achieve no click activity I don't want the app to open and I do not want the message to disappear. It works perfectly when the app is open and running. When the app is not open I still get the notification but it is not in multi-line so I can only see the beginning of the notification. Then clicking on the notification makes it disappear. I have spent hours trying to

问题 I am struggling with FCM notifications on Android. The issue is only when the app is closed and not running. I am trying to achieve no click activity I don't want the app to open and I do not want the message to disappear. It works perfectly when the app is open and running. When the app is not open I still get the notification but it is not in multi-line so I can only see the beginning of the notification. Then clicking on the notification makes it disappear. I have spent hours trying to

问题 I've got a series of "pipelined" components that all communicate through ActiveMQ message queues. Each component uses Camel to treat each of these queues as an Endpoint. Each component uses the same basic pattern: Where each component consumes messages off of an input queue, processes the message(s), and then places 1+ messages on an outbound/output queue. The "output" queue then becomes the "input" queue for the next component in the chain. Pretty basic. I am now trying to roll up my sleeves

问题 For message-oriented middleware that does not consistently support priority messages (such as AMQP) what is the best way to implement priority consumption when queues have only FIFO semantics? The general use case would be a system in which consumers receive messages of a higher priority before messages of a lower priority when a large backlog of messages exists in Queue(s). 回答1: Given only FIFO support for a given single queue, you will of course have to introduce either multiple queues, an

问题 In one of the answers to Broadcast like UDP with the Reliability of TCP, a user mentions the Spread messaging API. I've also run across one called ØMQ. I also have some familiarity with MPI. So, my main question is: why would I choose one over the other? More specifically, why would I choose to use Spread or ØMQ when there are mature implementations of MPI to be had? 回答1: MPI was deisgned tightly-coupled compute clusters with fast, reliable networks. Spread and ØMQ are designed for large

问题 I know that exists similar questions on site, but I confused because http and xmpp have difference limit: this page say differences between http and xmpp . first limit is [ xmpp & http ]: up to 4KB of data second limit is: http : You can send out a message to 1000 users at a time. (ref) xmpp : For each sender ID, GCM allows 1000 connections in parallel. (ref) You can send out a message to 1000 users at a time. so if you have more users you'll have to send the message multiple times from your

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed last year . Suppose you have n processes, n > 2. You want to have agreement amongst them that one is to be active. So they need to vote amonst each other to determine which one is active. All processes may fail at any time, we want to have one process active if possible, but ... We must

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed last year . Suppose you have n processes, n > 2. You want to have agreement amongst them that one is to be active. So they need to vote amonst each other to determine which one is active. All processes may fail at any time, we want to have one process active if possible, but ... We must

问题 Is there some secret sauce to third party sms/mms messaging apps? Our app downloads and Installs fine, sends sms fine, receives sms fine. The app also receives mms fine, but when trying to send MMS from either a Sprint or Verizon phone message always fails (quickly). We have tried many different APNs but I am beginning to think that maybe these APNs are only for GSM and not CDMA networks? Sprint does not allow editing to apns so I cant find APN settings except on one phone. Here is the most