I got an issue with php-redis with socket.io ,in their example here
https://github.com/rase-/socket.io-php-emitter
im trying to emit to specific user which is set on my socket.io nodejs server , in a varible called:
var users = {}; this carible contain the socket id , when user connect to the node server im saving its socket . on its user_id
users[data.id] = socket;
anyone can help me understand how do i send to a specific user my way or another way usingphp redis
Ok so eventually i did not use the php emitter , i was installing the php redis and use the publish function to communicate between the php <-redis-> nodejs.
i publish with diffrent keywords to recognize what action i want to preform in the nodejs and depanding on that i was emitting the right action to the right user/s.
hope my answer helped
Related
I'm setting up an iOS app to use the IP Messaging and video calling apis. I'm able to connect, create channels and setup a video call if I manually create hard-coded tokens for the app. However, if I want to use the PHP server (as described here https://www.twilio.com/docs/api/ip-messaging/guides/quickstart-ios) then I always get an error and it can't connect anymore.
I'm attaching a screenshot of what I see when I hit the http://localhost:8080 address which seems to produce a 500 Internal error on this URL: https://cds.twilio.com/v2/Streams
Thanks so much!
After much time spent on this I decided to try the node backend instead - under other server-side languages of the PHP and I have it running in 2 minutes! I used the exact same credentials as the ones that I was using on the PHP config file so either my PHP environment has something strange or the PHP backend needs some fixing. In any case, I'm able to move forward using the node backend, so if you run into the same issue just try node instead of PHP. woohoo!
I'm using pusher gem to manipulate my front-end from an external API. It works fine, no problem with that.
But the thing I wonder is if there is a possibility to use push notifications at the back-end of my application? I spent a serious amount of time investigating this but couldn't find something useful.
Let me summarize:
I have an application and another API application which is tightly interacting with other. Sometimes I want to use my API to send notification to my main application and I want to be able to manipulate data at the back-end of my main application regarding the data received from API side. These are things like 'an action was completed/started/succeed' etc...
I understand that 'pusher' receives push notifications by JavaScript at the front-end. But I believe that there must be a way to use those notifications at the back-end as well.
If there is another way (maybe Faye? Websocket) to do that I'd love to learn what it is. Any clue would be appreciated.
Is it something doable?
Thank you
Pusher is a backend system too (to "push" updates to channels)
Endpoints
I think you may be interested in endpoints
From what I can gather, it seems you're looking to trigger the transfer of data to an endpoint once an action occurs in your API? For example:
User signs up on "API" app
API app sends "notification" to main app
Main app increases user count by 1
The way I can see this working is by either using ajax, or sending a curl request to your main app's endpoint (set in routes), triggering the action:
#main_app/config/routes.rb
post "endpoint", to: "application#endpoint"
#main_app/controllers/application_controller.rb
def endpoint
#count = Option.increment!(:user_count)
end
This will allow you to manipulate your data in the backend of your "main" app
API
The tricky, non-conventional part comes when you want to send the data from your API app to your Main app (this is where you got the "pusher" idea from)
I would personally look at sending a standard HTTP request to the Main app endpoint, probably with Curl (if from the backend):
Curl on Ruby on Rails
Rails curl syntax
You may want to install curb (CUrl RuBy) here: https://github.com/taf2/curb
I could write some code if you wanted?
I had asked the same question to the Pusher's support team and I got the exact answer I was looking for.
You can install a client library on your server
(http://pusher.com/docs/client_libraries) if there is one for your
server. You can then subscribe to a client channel this way.
In my case, I use Ruby gem which can be reached from https://github.com/pusher/pusher-ruby-client .
I am running a single instance of terracotta server 3.7.5 with two java clients.
I have few questions related to this configuration.
1) If Teracotta Server goes down I want to receive an exception in clients. Is it possible ?
2) If Teraacotta server comes back up I want these clinet to reconnect to server.
I have came across this URL http://terracotta.org/documentation/4.0/terracotta-server-array/high-availability
I am not sure if these configs are vaild for open source 3.7.5
Regards,
Amber
Yes, this is possible.
1) If Teracotta Server goes down I want to receive an exception in clients. Is it possible ?
A: You can use Nonstop Caching caching for this .
http://terracotta.org/documentation/3.7.4/enterprise-ehcache/reference-guide#nonstop
Use
2) If Terracotta server comes back up I want these clinet to reconnect to server.
A: You can use Rejoin for this along with NonStop.
http://terracotta.org/documentation/3.7.4/enterprise-ehcache/reference-guide#71266
I'm currently developing a server that can get data over the internet from specific device i have and log it into a database. Unfortunately I dont have control on the way this device communicate.
Currently I set an IP adress and a port number and the device will open a socket and send a string. I dont really want to develop a server from scratch and i would much prefer to base on a web server. but the data is a plain string and not a full http request.
Is there a way around it using Ruby on rails ? Is it possible to do with other web-server-based technology ?
Thanks a lot
You can use just a regular old ruby socket to receive the string.
Sounds like an application that node.js would be useful for, if you want a pre-made node+rails app which would do what you want check out compound at GitHub mentioned in this article
I'm in search of a RELIABLE websocket server for ROR 3.Now we're using socky. It is unreliable. We like it because it has flash fallback, so it suppose to work on older browsers...but again - it is unreliable.
Do you know any good websocket server for ROR with fallback (i.e. supporting all browsers)
alternatives are:
socket.io (raw Websocket for NodeJS)
juggernaut (Complete Bayeux Protocol for NodeJS/Rails)
faye (Complete Bayeux Protocol for NodeJS/Rails) with a Ruby-Server
A tip: don't use ruby as websocket server, go for NodeJS - we handle thousands of messages every hour without any issue.
We used the most simple setup possible to make it work - and it works ;)
Our Setup:
Rails 3.0.9
Redis
NodeJS
Socket.IO
How we set it up:
Rails --PUB--> REDIS --SUB--> NodeJS --WEBSOCKET (SOCKET.IO)--> Client
Article Redis PubSub - How does it work?
Another tip: Avoid authentication if possible
Here's our case:
We have something like a project management tool with a virtual filesystem. Let's say you're viewing a folder while someone else of your team uploads a new file. Now we have to inform you that your view is out of the date - we send a message like:
folder_id | last_change_timestamp
to the channel folders:#{folder_id}
now the client (which listens to folders:#{folder_id} receives that messages and sees "whoops my view is out of date" and shows a message "Your view is outdated, please click >here< to refresh".
The good thing is that we don't need any authentication because:
if you have no access to the project you would have to guess the folder_id to subscribe to the channel
even if you manage to subscribe to the channel the only information you get is that something has changed - not more not less ;)