zmq4 | A Go interface to ZeroMQ version | REST library

by pebbe Go Version: v1.2.9 License: BSD-2-Clause

X-Ray Key Features Code Snippets Community Discussions(5)Vulnerabilities Install Support

kandi X-RAY | zmq4 Summary

zmq4 is a Go library typically used in Web Services, REST applications. zmq4 has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

A Go interface to ZeroMQ version 4.

Support

Quality

Security

License

Reuse

Support

zmq4 has a medium active ecosystem.

It has 1053 star(s) with 159 fork(s). There are 45 watchers for this library.

It had no major release in the last 12 months.

There are 47 open issues and 110 have been closed. On average issues are closed in 39 days. There are 3 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of zmq4 is v1.2.9

Quality

zmq4 has no bugs reported.

Security

zmq4 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

zmq4 is licensed under the BSD-2-Clause License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

zmq4 releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of zmq4

Get all kandi verified functions for this library.

zmq4 Key Features

No Key Features are available at this moment for zmq4.

zmq4 Examples and Code Snippets

No Code Snippets are available at this moment for zmq4.

Community Discussions

Trending Discussions on zmq4

ZMQ can't receive message from multiple publishers

ZeroMQ round-robin fail-over on disconnected peers

PUB/SUB pattern in ZeroMQ not working

How to have ZeroMQ to timeout messages that are outbound queued, but haven't been sent within a set time?

Is it possible to use ZMQ proxy as "switch"?

QUESTION

ZMQ can't receive message from multiple publishers

Asked 2018-Dec-30 at 14:46

I'm implementing the Espresso Pattern of ZMQ.

I want to connect many subscribers <> Proxy <> many publishers

However, the listener in the proxy only receives messages from one publisher. Hence, the subscribers only receive from that particular publisher. I can't figure out what's the problem with my code.

...

ANSWER

Answered 2018-Dec-30 at 14:46

I've figured out the solution. XPUB/XSUB should bind to the socket PUB and SUB workers should connect to socket

Working code below

Source https://stackoverflow.com/questions/53973010

QUESTION

ZeroMQ round-robin fail-over on disconnected peers

Asked 2018-May-31 at 16:34

I'm using ZeroMQ's multiple connect feature, to connect a single DEALER to 2 ROUTERS:

...

ANSWER

Answered 2018-May-31 at 16:34

What I need to happen is for DEALER to ignore disconnected or failed peers. Is this possible ?

Oh sure, it is. There is need to tweak the default ( inactive ) values, using you use-case specific settings in :

a .setsockopt( ZMQ.IMMEDIATE, 1 ) for not buffering message-instances for peer, that do not seem to be "alive"
a .setsockopt( ZMQ.HEARTBEAT_IVL, ) for sending heartbeats
a .setsockopt( ZMQ.HEARTBEAT_TTL, ) for a Time-To-Live setting
a .setsockopt( ZMQ.HEARTBEAT_TIMEOUT, ) for a timeout threshold
a .setsockopt( ZMQ.HANDSHAKE_IVL, ) for managing (re-)establishment timeouts.

For details, check your language binding and what native API version it actually uses under the hood. Most of these settings are available since native-API v 3.x, the most recent native-API v 4.2.2 documentation will help you tune the values and configuration strategies.

Source https://stackoverflow.com/questions/50616902

QUESTION

PUB/SUB pattern in ZeroMQ not working

Asked 2017-Dec-15 at 11:16

I am trying to implement a very basic PUB/SUB pattern using ZeroMQ. I would like to have a server (always active) broadcasting messages (publisher) to all clients and does not care about connected clients. If a clients connect to this server as a subscriber, it should receive the message.

However, I can not send the message using PUB/SUB.

In Python it would be:

...

ANSWER

Answered 2017-Dec-15 at 11:16

Did I mis-understood this pattern? Yes, fortunately you did.

ZeroMQ archetypes were defined so as to represent a certain behaviour. As said, PUSH-archetype AccessPoint pushes every message "through" all the so far setup communication channels, PULL-er AccessPoint pulls anything that has arrived down the line(s) to "it's hands", PUB-lisher AccessPoint publishes, SUB-scriber AccessPoint subscribes, so as to receive just the messages, that match it's topic-filter(s), but not any other.

As it seems clear, such Archetype "specification" helps build the ZeroMQ smart messaging / signalling infrastructure for our ease of use in distributed-systems architectures.

Source https://stackoverflow.com/questions/47817223

QUESTION

How to have ZeroMQ to timeout messages that are outbound queued, but haven't been sent within a set time?

Asked 2017-Jul-06 at 23:15

I have an application running on a server which takes requests from a phone app and then load balances the request across worker servers. I'm trying to add a timeout in the case that messages on the main server that have been in the outbound queue for the length of the timeout are removed from the queue. More specifically, the application on the main server is written in golang and implements the Paranoid Pirate Pattern of load balancing. The code I currently have is:

...

ANSWER

Answered 2017-Jun-21 at 22:59

In newer API-versions, there is an option to discard all "old" messages and always deliver just the "newest" one.

If that meets your expectations, and if all peers meet API v.4.0+, you are done.

ZMQ_CONFLATE: Keep only last message

If set, a socket shall keep only one message in its inbound/outbound queue, this message being the last message received/the last message to be sent. Ignores ZMQ_RCVHWM and ZMQ_SNDHWM options. Does not support multi-part messages, in particular, only one part of it is kept in the socket internal queue.
Option value type int
Option value unit boolean
Default value 0 (false)
Applicable socket types ZMQ_PULL, ZMQ_PUSH, ZMQ_SUB, ZMQ_PUB, ZMQ_DEALER

Source https://stackoverflow.com/questions/44687426

QUESTION

Is it possible to use ZMQ proxy as "switch"?

Asked 2017-Apr-20 at 17:12

I'm going to implement the following diagram: ZMQ-proxy

Just to let all "data generators" publish data to all "data receivers". Data receivers should still have ability to set subscritions.

...

ANSWER

Answered 2017-Apr-20 at 17:12

To receive any data subscriber socket should specify SetSubscibe with some filter. see Official documentation

Source https://stackoverflow.com/questions/43522919

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install zmq4

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

Find more information at: