messaging

How to receive simplest Windows message on UWP XAML MVVM app?

由 元气小坏坏 提交于 2019-12-10 13:38:45
问题 My big-picture problem: I need to send a signal from a Windows 10 desktop app (or a service, really) to a UWP XAML MVVM app on the same OS instance / machine. I was using named semaphores in the global namespace, but these don't work at all on UWP (by design, for security reasons maybe). No joy. I tried UWP sockets, and this works with the UWP as listener only if the client is on a remote machine. Is this a security design decision, too? No idea. Exempting the app from loopback restriction

Is it necessary to use as few queues as possible And solutions for web messaging

由 余生长醉 提交于 2019-12-10 10:16:32
问题 I read in forum that while implementing any application using AMQP it is necessary to use fewer queues. So would I be completely wrong to assume that if I were cloning twitter I would have a unique and durable queue for each user signing up? It just seems the most natural approach and if not assign a unique queue for each user how would one design something like that. What is the most used approach for web messaging. I see RabbitHUb and Rabbit WebHooks but Webhooks doesn't seem to be a

How to prevent a control from changing Z order?

由 烈酒焚心 提交于 2019-12-10 09:42:15
问题 I have user control in .Net where I use a hit test in WndProc to allow resizing it in runtime with the mouse. The problem is that after the hit test succedes (mouse press, drag to resize, mouse release) the control jumps upwards in the Z order and ruins it position in the form. I need the hit test since it's a very customized control. Is there a way in WndProc to stop the control from changing it's Z order ? Thanks. The hit test code: protected override void WndProc(ref Message m) { if (

Send an object using RabbitMQ

由 为君一笑 提交于 2019-12-10 03:54:23
问题 I Understand that this question duplicates question at using rabbitmq to send a message not string but struct if to do this using the first way first way I have the following trace: java.io.EOFException at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2304) at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2773) at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:798) at java.io.ObjectInputStream.<init>

Issues with Cross Document Messaging between IFrame & Parent

由 浪子不回头ぞ 提交于 2019-12-10 02:09:45
问题 I have an application running inside an iframe on a "foreign" page (different domain etc.). To allow some basic communication between the iframe & the parent, I load some script of mine on the parent page and use postMessage to do some cross document messaging. Most of the time this communication works as intended, but sometimes I see some errors reported to my error tracking tool and can't figure out why they happen. Here's some exemplary code: PluginOnParent.js // ... window

How to open attachment list of media?

由 我怕爱的太早我们不能终老 提交于 2019-12-09 12:11:27
问题 In Android messaging, when click on attach it open the list of content provider like Camera, Gallery, Audio, Video etc . How to open the same list on button click? Like this : 回答1: What you want is actually a little complex: you need to call a method like this in your Activity private void showAddAttachmentDialog() { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setIcon(R.drawable.ic_dialog_attach); builder.setTitle(R.string.add_attachment);

How to implement a competing consumer solution?

由 假如想象 提交于 2019-12-09 08:56:00
问题 As a exercise I'm trying to find an example which implements competing consumer. many producers - > MSMQueue <- competing consumers So far I did not find any documentation on how to achieve this. My first attempt to figure out how is implemented in MassTransit or NServiceBus failed to many layers of indirection. Any help will be greatly appreciated. 回答1: With MassTransit and MSMQ you can achieve this using the Distributor component. Note that if you use MassTransit with RabbitMQ instead of

How to enable negative source journaling while sending a message to MSMQ?

由 十年热恋 提交于 2019-12-08 17:19:21
问题 I'm trying to send a message through System.Messaging.MessageQueue (.NET) and the message keeps on disappearing. I've seen people recommending enabling negative source journaling, but can't seem to find out how this is done. Anyone? 回答1: Message m = new Message(); m.UseDeadLetterQueue = true; Simple as. 来源： https://stackoverflow.com/questions/12937306/how-to-enable-negative-source-journaling-while-sending-a-message-to-msmq

Laravel Push Notification and Messaging

由 前提是你 提交于 2019-12-08 14:50:31
I'm trying to write front-end with the back-end ionic with laravel. What I want to do is that when the user orders the application, I want to send notifications to the application and messaging with the user from the application. For this, I have reviewed the / laravel-push-notification package; However, it did not work for me because I needed a dynamic messaging. Can you help with this? I do not want to use https://pusher.com I have also integrated push notification in laravel using below code, hope it helps you : function sendPushNotification($fcm_token, $title, $message, $id="") { $push

SQL - message schema - need to find an existing message thread given a set of users

由 倾然丶 夕夏残阳落幕 提交于 2019-12-08 11:46:18
问题 I'm designing a simple messaging schema where a thread groups all messages that are sent between a collection of users. I'm getting stuck when I have to find an existing thread given a set of users. There are 2 scenarios for sending a message: Send To Thread: When viewing a thread, a message is sent directly to that thread, so the threadID is known. (not a problem) Send To Recipients: A user creates a new message and specifies a set of recipients from scratch. I only want to create a new
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