messaging

问题 I have some problem with signalR, I can not send message to specific User From Hub. I want to do like this: public void Send(string userToId, string userForId, string message) { IHubContext context = GlobalHost.ConnectionManager.GetHubContext<ChatHubs>(); //userForId - it is Session["UserId"] context.Clients.User(userForId).updateMessages(message); } I have already read this topic: http://www.asp.net/signalr/overview/guide-to-the-api/mapping-users-to-connections , but It's not clear for me,

问题 All of the examples of Kafka | producers show the ProducerRecord 's key/value pair as not only being the same type (all examples show <String,String> ), but the same value . For example: producer.send(new ProducerRecord<String, String>("someTopic", Integer.toString(i), Integer.toString(i))); But in the Kafka docs, I can't seem to find where the key/value concept (and its underlying purpose/utility) is explained. In traditional messaging (ActiveMQ, RabbitMQ, etc.) I've always fired a message

问题 Our app servers are running in multi-node cluster with each creating an XMPP connection to the GCM CCS/XMPP server with the same account. In each outgoing message to the Android devices, delivery_receipt_requested flag is enabled. The app servers do receive the delivery receipts but they do not always go to the connection through which the message was sent. It looks like GCM server does not do session binding correctly for delivery receipt. Does anybody have experience on this? 来源： https:/

问题 Our app servers are running in multi-node cluster with each creating an XMPP connection to the GCM CCS/XMPP server with the same account. In each outgoing message to the Android devices, delivery_receipt_requested flag is enabled. The app servers do receive the delivery receipts but they do not always go to the connection through which the message was sent. It looks like GCM server does not do session binding correctly for delivery receipt. Does anybody have experience on this? 来源： https:/

问题 Our app servers are running in multi-node cluster with each creating an XMPP connection to the GCM CCS/XMPP server with the same account. In each outgoing message to the Android devices, delivery_receipt_requested flag is enabled. The app servers do receive the delivery receipts but they do not always go to the connection through which the message was sent. It looks like GCM server does not do session binding correctly for delivery receipt. Does anybody have experience on this? 来源： https:/

问题 I am displaying the message status that differs from each user. Let's say user1 sends a message to user2 , user1 's message status then sets to read , while user2 's message is set to unread by default. It will be updated after user2 clicks the message. So in these scenario, the message of user1 (from the inbox) will have a gray-colored font which indicates that the message is set to read (since user1 is the one who is sending). On the other side, user2 have a bold font that indicates that

问题 This question follows directly from a previous question of mine in SO. I am still unable to grok the concept of JMS sessions being used as a transactional unit of work . From the Java Message Service book : The QueueConnection object is used to create a JMS Session object (specifically, a Queue Session), which is the working thread and transactional unit of work in JMS. Unlike JDBC, which requires a connection for each transactional unit of work, JMS uses a single connection and multiple

问题 I'm asking your sugegstions about an "architectural" scenario: I'd looking for a simplest publish/subscribe architecture to let talk two decoupled servers over on internet, sharing "sparse" but "real-time" messages/events. Let me explain: The PUBLISHER: Is a server (http://www.server.com) that generate some sort of events (by example events==ORDERS data on a e-commerce website). SUBSCRIBERS (one or more): Are "clients" that can subscribe to receive ORDERS events (http://www.client.com). In

问题 I am writing a Google Chrome extension. I have reached the stage where I can pass messages back and forth readily but I am running into trouble with using the response callback. My background page opens a message page and then the message page requests more information from background. When the message page receives the response I want to replace some of the standard text on the message page with custom text based on the response. Here is the code: chrome.extension.sendRequest({cmd:

问题 I am sending an SMS programmatically from my app. The sent message is not saved in Sent Items folder. I have read few posts, especially this one... http://android-developers.blogspot.com/2010/05/be-careful-with-content-providers.html But I do need to save it in Sent Items as I have indeed sent an SMS. What is the best way to do it such a way that my app doesn't break? 回答1: You can save Message Pragmatically, in sent items or in inbox. public boolean restoreSms(Sms obj) { boolean ret = false;