Best messaging pattern for server that spawns multiple workers [closed]
I'm writing a system in which a server program will spawn multiple worker processes (using CreateProcessA) to work on tasks in parallel. I want to use ZeroMQ to communicate tasks to the workers and...
View ArticlePass ZMQ context to thread
In C++ I'm using ZeroMQ to build a simple client-server chatting application. Once the context is initialised in the main, I'd like to pass it to a thread and declare there the socket used to output...
View ArticleHow can I secure socket in NetMQ/ZeroMQ?
I'm using Router-Dealer and Pub-Sub patterns to send and receive messages using TCP(tcp://).The Server-Client communication is working fine and now I need to secure this socket connection over a...
View ArticleZeroMQ subscriber in Rails worker fails to receive messages
I am trying to subscribe to ZeroMQ from my Quake Live server. I registered the server on QLStats (green status here). However, my Rails 7.2.2.1 worker using ffi-rzmq 2.0.7 fails to receive messages. I...
View Articleshould a high performance trading engine save to DB synchronously?
For a high performance trading engine, it matches/handles one order at a time, should it save the order and other critical info to DB before it moves on to the next one?or can I use a separate thread...
View ArticleFor how much time ZeroMQ (0MQ) server keeps state information of a client...
I am studying the message delivery guarantee in ZeroMQ, if it ensures exactly-once message delivery.The classic method is to keep the message number and client ID at the receiving node, and each time a...
View ArticleWhy a code, trying to read messages from two ZeroMQ sockets, fails?
I have issues with reading messages from two zmq servers (one set to REQ|REP and one PUB|SUB)The two servers are running on another computer. When I read just the REQ|REP connection everything works...
View ArticleZeroMQ PUB-SUB communication : SUB receives nothing
I'm trying to get a PUB-SUB communication in ZeroMQ working where the PUB is in C++ and the SUB in python. I am using python 3.8, ZeroMQ 4.3.2, pyzmq 18.1.1 and cppzmq 4.5.0The PUB : int main() {...
View ArticleHow to make ZMQ pub client socket buffer messages while sub server socket is...
Given 2 applications whereapplication A is using a publisher client to contentiously stream data to application B which has a sub server socket to accept that data, how can we configure pub client...
View Article0MQ - get message ip
A client is connecting himself to a server. The server should save the IP and do stuff with it later on (I really need the IP).I found this answer but I don't understand how I get the IP out of the...
View Articleusing ZeroMQ with Electron 22 and Electron-Forge
I am trying to use ZeroMQ (0MQ) inside an Electron application: npm add zeromq@6.0.0-beta.19 and electron@22.3.24 and @electron-forge/cli@6.0.5On my local machine, for development, everything works as...
View ArticleBuilding ZeroMQ on Windows 10 with Visual Studio and / or CMake fails
I am trying to set up a Co-simulation between Matlab / Simulink and an external application using the ZeroMQ library. The example I would like to build upon is described here. Therefore I need a...
View ArticleHow to publish std::vector using zmq
I’m working on a ZeroMQ PUB/SUB setup where the publisher sends point cloud data captured from an Intel RealSense depth camera, and the subscriber reconstructs it for further processing.In my...
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Having multiple sockets for same Context() and same port in ZMQ
My current system takes input stream from cameras, each camera in a separate instance, and apply Computer Vision models on each camera (Object Detection, Object Tracking and Personnel Recognition), and...
View ArticleMulti-threaded publish with zmq
I have a question as to the best way to publish from many threads to a single subscriber in ZMQ is. I have a web server, written in C++, that for each connection in, will need to send a ZMQ message to...
View ArticleHow to reconnect zeromq client to server?
I have just started using the Python ZeroMQ library, pyzmq==27.1.0.I am running on a Raspberry Pi 5 (debian 12 - bookworm)I want to make sure my client reconnects if my server stops and restarts. When...
View ArticleZmq for random recv and reply
I have two question regarding Zmq:-1) I am implementing a server which would receive 10K requests/per minute and then redirect these request towards backend. After getting response from backend it will...
View ArticleWhat is a good way to implement a barrier with ZeroMQ?
I have a barrier implementation, using a PAIR/PAIR interconnection.The server side will send a JSON-message to client and then wait for client sending a message. I will send 40000 messages in one test,...
View Articlehow to set zmq subscriber to buffer no msg
How to maker the zmq pub/sub subscriber buffers no msgs at all?import zmqimport timePUB_ADDR = "tcp://localhost:12345"ctx = zmq.Context()socket =...
View ArticleAutomatic reconnect in case of network failures
I am testing .NET version of ZeroMQ to understand how to handle network failures. I put the server (pub socket) to one external machine and debugging the client (sub socket). If I stop my local Wi-Fi...
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