JNI compiling on different platforms
I'm trying to compile the 0MQ java JNI binding...If I compile the jar on mac os x can I copy this to a linux distro?Download jzmq, the java JNI lib for zmq. Uncompress and cd into that dir, and build...
View ArticleWhat's the right ZeroMQ architecture for my scenario?
I have a service A that every once in a while needs to send a message to a cluster of services B1, B2 ... BN. Then all of these services need to receive that message reliably, and send a confirmation...
View ArticleZeroMQ background thread creation
I am trying to understand the threading model of ZeroMQ.According to their white paper http://zeromq.org/whitepapers:architecture#toc3, each I/O thread that the context is created with maps directly to...
View ArticleWhat is a good ZeroMQ / nanomsg architecture for a server that sends data to...
I am trying to create a network architecture which has a single server and multiple clients. The clients can connect and disconnect at any time so they need to announce their existence or shut-down to...
View ArticleZeroMQ Subscriber in Rails Worker Fails to Receive Messages, but Works with...
I am trying to subscribe to the ZeroMQ from my Quake Live server. I registered the server on QLStats (green status here: https://qlstats.net/panel2/servers.html), confirming that the PUB socket is...
View ArticleHow many copies are needed for a ZeroMQ IPC request?
I am investigating how many times a copy happens in an IPC request. This helps me decide the best solution for my mobile device.For example, shared memory is zero-copy, since processes can directly...
View ArticleZeroMQ subscribe broken if publisher restarts?
3 Raspberry Pis involved here running ZMQ publish and subscribe.I have one running a pump in the cellar, one as a monitor upstairs showing LEDs for state of pump. They send heartbeats to each other to...
View ArticleZeroMQ (C++): sending pointer with inproc
I am trying out ZeroMQ (zmq) for the multithreaded program.I want to avoid copying the data that need to be passed to workers.My idea was to send the pointer to the data as a zmq message.It works. But...
View ArticleWhat reliability guarantees (if any) does ZMQ make for PUB/SUB over epgm?
I've got an app sending messages on an epgm PUB socket to one or more epgm SUB sockets. Things mostly work, but if a subscribing application is left up long enough, it will generally end up missing a...
View ArticleZMQ socket gracefully termination in Python
I have the following ZMQ script#!/usr/bin/env python2.6import signalimport sysimport zmqcontext = zmq.Context()socket = context.socket(zmq.SUB)def signal_term_handler(signal, fname): socket.close()...
View ArticleMissing Messages with PGM in PUB/SUB Architecture Using ZMQ 4.3.6
I'm working on a PUB/SUB architecture with the following setup:Platform: x86 Ubuntu 24.04ZeroMQ Version: 4.3.6 (libzmq)PGM Version: 5.3.18Build Configuration: No additional flags except...
View ArticleHow to handle ZeroMQ publisher crash?
I have a zmq proxy(XPUB/XSUB) running on a thread and some other publisher/subscribers connected to this proxy on python, and have a publisher code on C++. All connections are made using tcp on...
View ArticleCorrect way to store Python function definitions (names) in a database?
Context - Skip to "Crux" for tl;dr:I'm building a report automation system that includes a handful of independent "worker" daemons each with their own APScheduler instance, one central "control panel"...
View ArticlePyZMQ asyncio SUB socket not receiving last message even with CONFLATE set to 1
I have an async PUB socket as follows:import asyncioimport zmqimport zmq.asyncioasync def serve(address: str): context = zmq.asyncio.Context() socket = context.socket(zmq.PUB)...
View ArticleCan't send a NumPy array larger than 2 GB with ZeroMQ
I'm using the Python code shown below to serialize and send a NumPy array from the client to the server using ZeroMQ. I noticed that when the NumPy array is larger than 2 GB the client seems to stall...
View ArticleZeroMQ 'Restart' if no reply was recieved
I have a python program which sends height data from my client to my server program. My server program will not be always running so if I don't recieve a response I would like it to try again.So far...
View ArticleHow can someone send data from MetaTrader 4/5 Terminal to external server?
this is somehow intended to (maybe) be(come) a guideline post in terms of MetaTrader 4/5 and its corresponding language MQL4 both set into context with sending data to external servers. In my special...
View ArticleUsing ZMQ, which pattern and framework to use in such a scenario ? Two...
My application is separated in two computers (A which contains some GUI and B which contains some complex processing).Here are some constraints:PROBLEMSBoth computers need to communicate between each...
View ArticleSetup zeromq client-server between Windows and WSL
I'm using ZeroMQ to set up a client-server communication system where the server runs on WSL and the client runs on Windows. For testing purposes, I'm using the default client-server example code in C...
View ArticleHow to launch ECS task instances dynamically using C#?
I have a micro-services application that I am deploying to AWS using ECS Fargate. Most of the containers can be deployed as long running tasks in a service. However, I need to spin up new containers as...
View ArticleCreate NetMQ Socket on one thread and operate on another?
I understand that NetMQ sockets are not thread safe. I'm trying to understand the exact boundaries of this. Must all access to a socket (creation, connect/bind and send/receive) be on the same thread?...
View ArticleHow to implement NetMQ(ZeroMQ) solution properly?
I'm using ZeroMQ (NetMQ, latest version) in a Client (WinForms) / Service (WCF) setup. The current implementation has multiple thread loops for message handling and a heartbeat mechanism, but it's...
View ArticleZeroMQ and multiple subscribe filters in Python
I'd like to subscribe to multiple filters with ZeroMQ in Python, using one socket.sock.setsockopt(zmq.SUBSCRIBE, 'first.filter')sock.setsockopt(zmq.SUBSCRIBE, 'second.filter')But this doesn't work....
View ArticleZMQError: Cannot assign requested address
I'm using zeromq to develop a dynamic application which operate like upnp protocol( autoconfiguration and auto-discovery of equipment on a living room). To do it so, i use zeromq to distribute...
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srsUE on FPGA not connecting to srsRAN
I'm running srsUE on FPGA, buildroot with 2 CPUs and 1G memory. srsRAN is running on my laptop, ubuntu 22. I use dockerized version of 5gc.srsUE and srsRAN connected through ZMQ and on a local...
View ArticleHow to gracefully terminate a socket server?
If I have a server function that is listening to a port in an infinite loop, how do I stop it? If i do ctrl+c it terminates the process and the program does not get a chance to destroy the socket...
View ArticleLink error finding pthread when cross compiling for Raspberry PI using Macos
Im trying to build an application on the mac (host) for the raspberry pi (target) that will use zeromq. I can write a simeple program that uses pthread and it runs perfectly. When I enable -lzmq,...
View ArticleWhy is the requester and responder socket string different in zmq_bind vs...
I have just started studying the ZeroMQ messaging library from Chapter 1 of the guide (available here). While I understand the well-written examples, I don't get one small point of the syntax:...
View ArticleHow to receive a multipart message in ZMQ using Java?
As simple as this operation seems I can't find any documentation regarding how to receive a multipart message using ZMQ (Jeromq). I checked The Guide but it only contains C code with this info and it...
View ArticleZeromq Broadcast All to All
What would be the best way of doing an all-to-all communication, would it be best to do a pub-sub with everyone subscribing to everyone else, or is there a socket type better suited for this?
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