netty-zmtp | Netty implementation of ZMTP , the ZeroMQ Message Transport | Networking library

by spotify Java Version: 0.3.2 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | netty-zmtp Summary

netty-zmtp is a Java library typically used in Networking applications. netty-zmtp has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. You can download it from GitHub, Maven.

This is a ZeroMQ codec for Netty that aims to implement ZMTP, the ZeroMQ Message Transport Protocol versions 1.0 and 2.0 as specified in and This project is hosted on At Spotify we use ZeroMQ for a lot of the internal communication between services in the backend. As we implement more services on top of the JVM we felt the need for more control over the state of TCP connections, routing, message queue management, etc as well as getting better performance than seems to be currently possible with the JNI based JZMQ library. This project implements the ZMTP wire protocol but not the ZeroMQ API, meaning that it can be used to communicate with other peers using e.g. ZeroMQ (libzmq) but it's not a drop-in replacement for JZMQ like e.g. JeroMQ attempts to be. For an example of how a ZeroMQ socket equivalent might be implemented using the netty-zmtp codecs, see the ZMTPSocket class in the tests. We have successfully used these handlers to implement services capable of processing millions of messages per second. Currently this project targets Java 6+ and Netty 4.x. It does not have any native dependency on e.g. libzmq.

Support

Quality

Security

License

Reuse

Support

netty-zmtp has a low active ecosystem.

It has 240 star(s) with 58 fork(s). There are 129 watchers for this library.

It had no major release in the last 12 months.

There are 1 open issues and 6 have been closed. On average issues are closed in 169 days. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of netty-zmtp is 0.3.2

Quality

netty-zmtp has 0 bugs and 0 code smells.

Security

netty-zmtp has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

netty-zmtp code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

netty-zmtp is licensed under the Apache-2.0 License. This license is Permissive.

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

Reuse

netty-zmtp releases are available to install and integrate.

Deployable package is available in Maven.

Build file is available. You can build the component from source.

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

It has 2695 lines of code, 231 functions and 37 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed netty-zmtp and discovered the below as its top functions. This is intended to give you an instant insight into netty-zmtp implemented functionality, and help decide if they suit your requirements.

Performs the handshake
Get the handshake
Read the remote identity from the buffer
Reads the length of a frame
Reads a ZMTP message from the given ByteBuf
Removes the front frame from the message
This method generates a hashCode of the negotiated socket
Detects the remote protocol version from the buffer
Schedule a flush
Adds a frame to the message
Compares two ZMTPHandles
Generate peer identity
Writes data to the frame
Decode header
Rewrite the frame header
Write all messages
Compares this message with ZMT

Get all kandi verified functions for this library.

netty-zmtp Key Features

No Key Features are available at this moment for netty-zmtp.

netty-zmtp Examples and Code Snippets

No Code Snippets are available at this moment for netty-zmtp.

Community Discussions

Trending Discussions on Networking

Multicast being sent over hardware address of default gateway address instead of ethernet multicast address

How to extract street graph or network from OpenStreetMap?

Julia - not able to capture looped back UDP packets in Wireshark

In a vscode development container, is there a way to access the docker container from a different machine on the local network?

Floating IPs usage on Digital Ocean

How to create an edgelist from a dataframe (expand, group_by?)

Ubuntu16 LetsEncrypt R3 issue

Updated windows docker and now it doesn't work outside localhost

Networked aframe dynamic rooms not working with easy rtc

Return a list of mutual nodes between every pair of nodes in R

QUESTION

Multicast being sent over hardware address of default gateway address instead of ethernet multicast address

Asked 2022-Mar-10 at 14:07

I have this code to send multicast messages to a group. There are no errors while running the program but when I monitor packets in Wireshark the ethernet destination of my packets are of my default gateway instead of something like 01-00-5e-xx-xx-xx

The code:

...

ANSWER

Answered 2022-Mar-10 at 14:07

244.244.244.1 is not a valid multicast address.

Multicast address are in the range of 224.0.0.1 - 239.255.255.255. The address you're sending to is not in that range. So the outgoing MAC address is not a multicast MAC.

Change the destination IP to be in the range of multicast IP addresses and you'll see a proper multicast MAC address.

Source https://stackoverflow.com/questions/71419150

QUESTION

How to extract street graph or network from OpenStreetMap?

Asked 2022-Feb-17 at 16:03

How to extract street graph or network from OpenStreetMap ?

...

ANSWER

Answered 2022-Feb-17 at 15:56

Solutions:

There are many solutions to achieve this goal, I listed some of them below.

- Overpass-api

Overpass-api & overpass-turbo let you use overpass query language to collect ways and nodes of type highway for a city :

Source https://stackoverflow.com/questions/69174361

QUESTION

Julia - not able to capture looped back UDP packets in Wireshark

Asked 2022-Jan-14 at 08:46

I have a UDP sender program here:

...

ANSWER

Answered 2022-Jan-14 at 08:46

When I tried to change the destination ip address to 255.255.255.255 [broadcasting?]

Source https://stackoverflow.com/questions/70694929

QUESTION

In a vscode development container, is there a way to access the docker container from a different machine on the local network?

Asked 2022-Jan-01 at 05:35

I have an app (sveltekit) running inside and would like to access it from other devices on my local network.

I can access it normally from the host machine on localhost:3000.

I want to access it somehow from another machine on the local network. Is this possible? Sveltekit cli has --host flag, which outputs the following:

...

ANSWER

Answered 2022-Jan-01 at 05:35

All that was needed was to change the following VSCode setting. By default it was set to "localhost". Setting it to "allInterfaces" grants access to other devices on the local network.

Source https://stackoverflow.com/questions/70523216

QUESTION

Floating IPs usage on Digital Ocean

Asked 2021-Nov-27 at 00:12

I am looking for a basic thing yet I have not found not even a single good documentation on getting it done.

I want to allocate a floating IP, then associate it to a network interface of a droplet other than eth0. The reason is I want to have the ability to very easily switch from one IP to the other with a programming language.

In a few words, I want to be able to do these two commands and both should provide a different response.

...

ANSWER

Answered 2021-Nov-27 at 00:12

In the cloud (AWS. GCP etc.) ARP is emulated by the virtual network layer, meaning that only IPs assigned to VMs by the cloud platform can be resolved. Most of the L2 failover protocols do break for that reason. Even if ARP worked,the IP allocation process for these IPs (often called “floating IPs”) would not integrate with the virtual network in a standard way, so your OS can't just "grab" the IP using ARP and route the packets to itself.

I have not personally done this on Digital Ocean, but I assume that you can call the cloud's proprietary API to do this functionality if you would like to go this route.

See this link on GCP about floating IPs and their implementation. Hope this is helpful.

Here's an idea that needs to be tested:

Let's say you have Node1(10.1.1.1/24) and Node2(10.1.1.2/24)
Create a loopback interface on both VMs and set the same IP address for both like (10.2.1.1/32)
Start a heartbeat send/receive between them
When NodeA starts it automatically makes an API call to create a route for 10.2.1.1/32 and points to itself with preference 2
When NodeB starts it automatically makes an API call to create a route for 10.2.1.1/32 and points to itself with preference 1
The nodes could monitor each other to withdraw the static routes if the other fails. Ideally you would need a 3rd node to reach quorum and prevent split brain scenarios, but you get the idea right?

Source https://stackoverflow.com/questions/69919561

QUESTION

How to create an edgelist from a dataframe (expand, group_by?)

Asked 2021-Oct-23 at 14:32

I have a dataframe in R similar to the following:

...

ANSWER

Answered 2021-Sep-14 at 04:44

I really love a base R solution, so that's what you'll get from me. It's a bit hacky and ad hoc but it seems to get the job done pretty quickly.

Source https://stackoverflow.com/questions/69171494

QUESTION

Ubuntu16 LetsEncrypt R3 issue

Asked 2021-Sep-30 at 22:32

I've been trying to wrap my head around this issue all day, could someone help resolve or at least explain it as if I'm a child?

I have an Ubuntu 16 server, running openssl 1.1, & letsencrypt

R3 support expired last night and now an application doesn't work on all devices because it's intermediate signature is from R3 ?

I've removed the X3 from my cert chain providers and generated fresh SSLs with letsencrypt but it has not solved the issue.

...

ANSWER

Answered 2021-Sep-30 at 22:32

Okay, what I did was to use this config in getssl.cfg

Source https://stackoverflow.com/questions/69394817

QUESTION

Updated windows docker and now it doesn't work outside localhost

Asked 2021-Sep-23 at 10:38

I have been running a media cluster for sometime without any issues. I have everything networked into two different docker networks... the first network just bridges the docker instance to the local machine, the second network is a docker VPN container that I use for the other media services (an earlier version of what I am working on can be found here: https://github.com/Xander-Rudolph/MediaDocker)

The strangest thing happened today though. I ran the docker update for windows and now docker spools up without any errors or issues, however none of the services work outside of the machine running docker. Usually I have a poke through for a couple of the services in my router (namely wordpress/joomla which is on the bridge) and they work outside of my local network, but none of them are working anymore. I was able to confirm its not the DNS A record because I'm able to use the RDP ports I have mapped for my router, and when I test on another machine in the same network, it can't access the services via the internal IP (but it can RDP).

Anyone have any idea what could have changed to break this? I've already updated all my docker images and even rebuilt my VPN container (before I realized its a networking issue). What are some steps I can do to try to troubleshoot what is going wrong in docker to prevent access outside of localhost?

Update

I've been able to rule out the docker update as the root cause... I upgraded docker on my laptop (which was previously running the same version as my desktop) and its not having the same issue... this configuration must be localized to this desktop... No idea what the issue is... Will try a linux VM on the desktop instead of docker for windows...

Update 2

After a lot of screwing around in both a VM and in WSL, I'm still only able to access the docker services from localhost but not a different machine on my network or via the IP on the host machine (perhaps something similar to this: Can't access localhost via IP address). RDP does work so the computer is accessible but the services are not.

I'm not sure if this is a result of a docker networking config or a windows network config (I'm using WSL with docker installed on ubuntu 20.08) but I'm not seeing anything stick out. I'm going to remove the tag for docker windows but this is definitely an issue with networking and I suspect it has something to do with the fact that the containers are running behind a VPN... although I don't know why I would be able to access them on localhost but not the IP on another VM...

When I run

...

ANSWER

Answered 2021-Sep-21 at 02:43

Your question: "...What are some steps I can do to try to troubleshoot what is going wrong in docker to prevent access outside of localhost?..."

Troubleshooting help for you, first do you have multiple networking adapters (Ethernet, Wi-Fi, etc.) present on the host. First ensure, the priority of these adapters needs to be configured in correct order so the Windows networking stack can correctly choose gateway routes.

Now, to fix this set your primary internet-connected networking adapter to have the lowest InterfaceMetric value, use can use these Powershell commands from an elevated console:

Source https://stackoverflow.com/questions/69111163

QUESTION

Networked aframe dynamic rooms not working with easy rtc

Asked 2021-Sep-17 at 15:17

Issue

Hi, I've remixed a template for networked aframe dynamic rooms using a form:

https://glitch.com/edit/#!/power-lily-pancake?path=public%2Fscene.html%3A41%3A0

For some reason whenever I add these lines of code to the tag, the entire project breaks:

...

ANSWER

Answered 2021-Sep-17 at 15:17

afaik the dynamic-room component is designed to attach the networked-scene, not update it (since it doesn't handle updates). That's why the dynamic-room example scene does only have a dynamic-room component, and also why the dynamic-room is not working with networked-scene.

I'd throw all the networked-scene attributes to the dynamic-room setup, but it's also possible to make the two work together pretty much like you want it:

Source https://stackoverflow.com/questions/69138587

QUESTION

Return a list of mutual nodes between every pair of nodes in R

Asked 2021-Sep-10 at 20:25

I want to obtain a list of mutually connected nodes between every pair of nodes in my graph:

...

ANSWER

Answered 2021-Sep-10 at 19:00

This is not exactly efficient, it's a brute force double loop, but you can do

Source https://stackoverflow.com/questions/69127621

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

Vulnerabilities

No vulnerabilities reported

Install netty-zmtp

You can download it from GitHub, Maven.
You can use netty-zmtp like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the netty-zmtp component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

There is an open Google group for general development and usage discussion available at https://groups.google.com/group/netty-zmtp. We use the github issue tracker at https://github.com/spotify/netty-zmtp/issues.

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