nchan | horizontally scalable , multiprocess pub | Websocket library

by slact C Version: v1.3.6 License: Non-SPDX

X-Ray Key Features Code Snippets Community Discussions(4)Vulnerabilities Install Support

kandi X-RAY | nchan Summary

nchan is a C library typically used in Networking, Websocket applications. nchan has no bugs, it has no vulnerabilities and it has medium support. However nchan has a Non-SPDX License. You can download it from GitHub.

Nchan is a scalable, flexible pub/sub server for the modern web, built as a module for the Nginx web server. It can be configured as a standalone server, or as a shim between your application and hundreds, thousands, or millions of live subscribers. It can buffer messages in memory, on-disk, or via Redis. All connections are handled asynchronously and distributed among any number of worker processes. It can also scale to many Nginx servers with Redis. Messages are published to channels with HTTP POST requests or Websocket, and subscribed also through Websocket, long-polling, EventSource (SSE), old-fashioned interval polling, and more. In a web browser, you can use Websocket or EventSource natively, or the NchanSubscriber.js wrapper library. It supports Long-Polling, EventSource, and resumable Websockets, and has a few other added convenience options. It's also available on NPM.

Support

Quality

Security

License

Reuse

Support

nchan has a medium active ecosystem.

It has 2926 star(s) with 298 fork(s). There are 117 watchers for this library.

It had no major release in the last 6 months.

There are 106 open issues and 498 have been closed. On average issues are closed in 817 days. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of nchan is v1.3.6

Quality

nchan has 0 bugs and 0 code smells.

Security

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

nchan code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

nchan has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

nchan releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

It has 7196 lines of code, 453 functions and 24 files.

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

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nchan Key Features

No Key Features are available at this moment for nchan.

nchan Examples and Code Snippets

No Code Snippets are available at this moment for nchan.

Community Discussions

Trending Discussions on nchan

certbot --nginx generates PR_END_OF_FILE_ERROR

Differences in display of parameters between GNU Radio 3.7 and 3.8

gnuradio error: found character '%' that cannot start any token

Compiling "binica" with Intel MKL BLAS LAPACK on Ubuntu 16.04

QUESTION

certbot --nginx generates PR_END_OF_FILE_ERROR

Asked 2020-Nov-18 at 09:28

a Ubuntu 16.04.6 LTS VPS running nginx is presently bricked in terms of serving pages through port 443. This happened unexpectedly, I assume when a renewal kicked in automatically.

Following are twice replicated steps.

I removed all site definitions in sites-enabled and reduced the server to its simplest expression: one application in http mode only. The output of nginx -T is at bottom. the unencrypted pages serve as expected.

I then ran sudo certbot --nginx and selected 1 for the only 3rd level domain available to nginx

...

ANSWER

Answered 2020-Nov-18 at 09:28

These lines

Source https://stackoverflow.com/questions/64889800

QUESTION

Differences in display of parameters between GNU Radio 3.7 and 3.8

Asked 2020-Apr-25 at 14:28

I am porting multi-rtl to GNU Radio 3.8. I've actually done all the porting and I already have a program that works. Now only a few cosmetic changes are missing, such as new examples. When I wanted to make a new example, I realized that the block is displayed for me differently than in the picture. Here is this picture from documentation (original program):

Here is how this block is displayed for me (in my ported program):

It's even expected behavior. Here are parameters of this block (they're generated for each n in this way):

...

ANSWER

Answered 2020-Apr-25 at 14:28

Why are they displayed differently?

Probably some bug in your gnuradio 3.7 version. I just tested it with gnuradio 3.7.13.5 and the displayed block is similar to your gnuradio 3.8 example.

If you want to see all parameters change 'part' to 'none'. See also https://wiki.gnuradio.org/index.php/YAML_GRC#Parameters

Source https://stackoverflow.com/questions/61425831

QUESTION

gnuradio error: found character '%' that cannot start any token

Asked 2020-Apr-10 at 16:09

I get this error when I run GNU Radio Companion. Of course, the multi_rtl_source.block.yml block doesn't work and doesn't show up in the menu:

...

ANSWER

Answered 2020-Apr-10 at 16:09

Source https://stackoverflow.com/questions/61126231

QUESTION

Compiling "binica" with Intel MKL BLAS LAPACK on Ubuntu 16.04

Asked 2020-Mar-21 at 07:56

for a specific data analysis, I use the pre-compiled ica_linux binary from this repository. In the README.md of that repository, the authors state that you can achieve a major speedup when compiling the binary with architecture specific BLAS/LAPACK implementations. In our case, the speedup might actually save days of computing time, so i am very eager to compile the file with the appropriate libraries. Now, I don't have a lot of experience with makefiles, so I am a bit confused by the process -- which is why I am asking for your help.

My system is a HP ProLiant d360 Server with two Intel Xeon E5-2650 v3 deca-core processors and Ubuntu 16.04.6 x64

I tried the following clone repo ...

ANSWER

Answered 2020-Mar-21 at 07:56

'I don't really understand which libraries I have to add. " << Alex, do understand the list of Intel MKL libraries you need to add, please refer to the Intel MKL Linker Adviser to choose the list of libraries needed to add. Here is the list of this article: https://software.intel.com/en-us/articles/intel-mkl-link-line-advisor

Source https://stackoverflow.com/questions/60770612

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

Vulnerabilities

No vulnerabilities reported

Install nchan

Grab the latest copy of Nginx from nginx.org. Grab the latest Nchan source from github. Follow the instructions for building Nginx, except during the configure stage, add. If you're using Nginx > 1.9.11, you can build Nchan as a dynamic module with --add-dynamic-module=path/to/nchan. Run make, then make install.
Arch Linux: nginx-mod-nchan and nginx-mainline-mod-nchan are available in the Arch User Repository.
Mac OS X: a homebrew package is available. brew tap denji/nginx; brew install nginx-full --with-nchan-module
Debian: A dynamic module build is available in the Debian package repository: libnginx-mod-nchan. Additionally, you can use the pre-built static module packages nginx-common.deb and nginx-extras.deb. Download both and install them with dpkg -i, followed by sudo apt-get -f install.
Ubuntu: nginx-common.ubuntu.deb and nginx-extras.ubuntu.deb. Download both and install them with dpkg -i, followed by sudo apt-get -f install. Who knows when Ubuntu will add Nchan to their repository?...
Fedora: Dynamic module builds for Nginx > 1.10.0 are available: nginx-mod-nchan.x86_64.rpm, nginx-mod-nchan.src.rpm.
Heroku: A buildpack for compiling Nchan into Nginx is available: nchan-buildpack. A one-click, readily-deployable app is also available: nchan-heroku.
A statically compiled binary and associated linux nginx installation files are also available as a tarball.
Once you've built and installed Nchan, it's very easy to start using. Add two locations to your nginx config:. You can now publish messages to channels by POSTing data to /pub?id=channel_id , and subscribe by pointing Websocket, EventSource, or NchanSubscriber.js to sub/?id=channel_id. It's that simple. But Nchan is very flexible and highly configurable. So, of course, it can get a lot more complicated...

Support

Please support this project with a donation to keep me warm through the winter. I accept bitcoin at 15dLBzRS4HLRwCCVjx4emYkxXcyAPmGxM3 . Other donation methods can be found at https://nchan.io.

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