paho.mqtt.cpp
ZeroMQ


paho.mqtt.cpp | ZeroMQ | |
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1,070 | 9,935 | |
1.1% | 1.0% | |
8.7 | 6.9 | |
1 day ago | about 2 months ago | |
C++ | C++ | |
GNU General Public License v3.0 or later | Mozilla Public License 2.0 |
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paho.mqtt.cpp
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What network messaging library do you recommend?
For me personally, I've been using MQTT alot with Paho MQTT C++
ZeroMQ
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ZeroMQ: High-Performance Concurrency Framework
They explained why they did this here: https://github.com/zeromq/libzmq/issues/2376
Bottom line is that their licensing with a static linking exception was kind of weird and creating a lot of issues combining zeromq code even with other open source licenses (like Apache 2.0).
Interesting to see how they gathered permission to do this from the developer community. License changes like this are usually hard to realize unless you insist on copyright transfers. But in this case they managed to do it without that. So it was a collective decision. Hard to argue with that.
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Lightweight and fast AMQP (0-9-1) server
Slightly OT:
Are ZeroMQ and NanoMQ still widely used (and recommended)?
https://github.com/zeromq/libzmq
https://github.com/nanomq/nanomq
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ZeroMQ – Relicense from LGPL3 and exceptions to MPL 2.0
Remarkable, up until recently, requests for a new release were sumewhat brusquely rejected and marked as spam.
https://github.com/zeromq/libzmq/issues/4455
I wonder what made the maintainer change his mind.
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Essentials of Object Oriented and Functional Programming: A Guide to Modular Code
FP Libraries: gRPC, ZeroMQ, and AREG are examples of libraries with a special focus on providing possibilities for Interprocess Communication. Developed using C++, they facilitate communication through predefined APIs, emphasizing functional programming concepts.
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A Modern High-Performance Open Source Message Queuing System
Unlikely, but they seem to be different things altogether. BlazingMQ appears to be a traditional message queue (think ActiveMQ), with message peristence. ZeroMQ is more of a network middleware (think Tibco Rendezvous), and does not include persistence.
BlazingMQ also appears to be more of a "platform" or "service" that an app can use (sort of like Oracle, say) -- ZeroMQ includes libraries that one can use to build an app, service or platform, but none is provided "out of the box".
Which makes it harder to get started with ZeroMQ, since by definition every ZeroMQ app is essentially built "from scratch".
If you're interested in ZeroMQ, you may want to check out OZ (https://github.com/nyfix/OZ), which is a Rendezvous-like platform that uses the OpenMAMA API (https://github.com/finos/OpenMAMA) and ZeroMQ (https://github.com/zeromq/libzmq) transport to provide a full-featured network middleware implementation. OZ has been used in our shop since 2020 handling approx 50MM high-value messages per day on our global FIX network.
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need xbps-src help
-- Using src='https://github.com/zeromq/libzmq/releases/download/v4.3.4/zeromq-4.3.4.tar.gz'
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What network messaging library do you recommend?
Just check copying file in source repo https://github.com/zeromq/libzmq
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What they don't teach you about sockets
I think the situation is more subtle than the poster admits.
No, ZeroMQ and successors do not tell you about socket state. You can't detect disconnection or reconnection. But then if a TCP connection fails in some way that does not lead to disconnection (packets getting dropped, remote machine powers down), it can't possibly tell you about that either, but you still need to deal with it. So in any case, you need some sort of application-level error detection and recovery; you need heartbeats, and serial numbers in messages, and a protocol for explicitly restarting a connection and performing the initial handshake. And once you have that, explicit connection events from ZeroMQ are much less important.
Admittedly, given that this is a TCP transport, reporting reconnections would still be useful, because TCP won't ever drop messages from the interior of a sequence itself (if it delivers 15, it has delivered 1 - 14 already), so you shouldn't need the serial numbers.
And if it's really not possible to detect authentication failures, than that seems rubbish. And it seems that is indeed the case: https://github.com/zeromq/libzmq/issues/3505
- Encryption using ZMQ: How to handle certificates?
What are some alternatives?
tcp_pubsub - 📦 TCP based publish-subscribe library for C++ 🌐
gRPC - The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
GameNetworkingSockets - Reliable & unreliable messages over UDP. Robust message fragmentation & reassembly. P2P networking / NAT traversal. Encryption.
NATS - High-Performance server for NATS.io, the cloud and edge native messaging system.
Aeron - Efficient reliable UDP unicast, UDP multicast, and IPC message transport
nanomsg - nanomsg library
comms_champion - C++(11) library to implement and tools to monitor binary communication protocols
Cap'n Proto - Cap'n Proto serialization/RPC system - core tools and C++ library
Apache Thrift - Apache Thrift
Chronicle Queue - Micro second messaging that stores everything to disk
nsq - A realtime distributed messaging platform
eCAL - Please visit the new repository: https://github.com/eclipse-ecal/ecal

