I've been following the HTML5rocks webRTC guide and I have the Javascript set up as described, however the guide is not clear on how to receive a channelToken, roomKey, and User ID. The guide says,
"Note that values used in the JavaScript, such as the room variable and
the token used by openChannel(), are provided by the Google App Engine
app itself: take a look at the index.html template in the repository
to see what values are added."
Unfortunately the link provided is no good and I'm left with very little information regarding the most essential step in this process. The guide isn't clear about whether or not the Google App Engine is a necessary component and I don't see why it should be. I have searched the web in an attempt to find a more useful source, but I was unsuccessful. I also took a look at the webRTC Demo(https://apprtc.appspot[dot]com), that too was no help seeing that the channel information is generated server side. I feel like I should just be able to make a simple http request to some Google server and then run from there. Any information regarding my problem would be much appreciated.
Apologies: the code for this example has been moved to here.
(Been meaning to update the article, but haven't had a chance...)
The apprtc.appspot example uses the Channel API on App Engine for signaling, but there are lots of other ways to do this. Signaling mechanisms are not defined by the WebRTC spec. (Note that signaling, which is accomplished via a signaling service, is the exchange of network and media metadata in order to set up a WebRTC 'call': the actual data is communicated directly between peers.)
We ran a codelab at Google I/O, which describes from start to finish how to build a video chat application that uses Socket.io on Node.js for signaling (it's very simple!) You might want to try that instead.
Related
How to receive calls when the app is in background or quit state?
They are two different states of the app, background and completely closed.
or because example:
"How to receive calls with apiRTC as does WhatsApp?"
I am implementing ApiRTC JS SDK
Hi ApiRTCSupport and HardcoreGamer I am one of the developers in charge of the integration process of APIRTC with the application that ian mentions, actually we already communicated directly with APIRTC support and they mentioned that we should ask the respective question here.
the overall picture is as follows:
We have the application fully functional and integrated with the API/SDK JS.
The application is developed in Ionic with Cordova
Ionic#v4
CordovaCLI#10,
cordova-android#10.1.1
cordova-ios#6.2.0
The minimum necessary plugins were installed (including cordova-iosrtc)
Now the integrated p2p calls and p2p video calls are fully functional and without problems.
Now, among the new requirements are:
The possibility of receiving incoming calls and video calls when the app is in background (minimize state), what happens is that when the app is minimized the websocket together with the execution of the JS code is completely interrupted, so for another user who wants to call the one who put the minimized app says "user is offline", we need the guide on how to handle this first use case.
Second requirement the possibility to receive calls and video calls when the app is in quit state (app killed) [ like Telegram, WhatsApp, Messenger, etc], so it should be able to receive the notification and allow to execute the JS code that would allow the connection with the apiRTC services/servers. in this case we have already investigated about VoIP(for iOS) and push notifications with high Priority(for Android), but we wanted to know if this is the way to go or you have a different implementation for ApiRTC services.
Thank you and really sorry for the little information provided at the beginning.
If you need any more specific information I will be waiting for your answers.
I need to create a Spring Boot WebFlux rest web service to act as a proxy between an angularjs app that shows a video stream and an endpoint at dacast.com that delivers m3u8 playlist-based content.
At this time, there is a video component in the angular app that takes the following uri and presents the content to the user. I plan to create a reactive webflux rest service, but am at a loss as to how to implement this proxy. There are a lot of posts online about viewing the HLS feed in HTML, but nothing about how to proxy between the stream and a consumer of it.
https://dcunilive11-lh.akamaihd.net/i/dlive_1#xxxxxx/master.m3u8
I believe that I need to download the master.m3u8 file, which will contain https endpoints that I can download as a Flux stream and pass along to the angular app. Does this make sense? I'd appreciate your help and tips...
Thanks,
Mike
The m3u8 file is a text file which contains some info about the video and links to the media streams as you say.
The simplest way for the angular app to play the video would be just to provide the link to the original m3u8 file to it directly, but I am guessing it can't reach that link for some reason in your use case.
Assuming this is correct, it sounds like your web service just needs to act as a proxy for the m3u8 file link and the media streams.
There are some instructions in the online Spring documentation for this - e.g.: https://cloud.spring.io/spring-cloud-gateway/1.0.x/multi/multi__building_a_gateway_using_spring_mvc.html
One thing that may be causing some confusion is that the HLS media streams are actually transferred between the client and the server as a series of client requests and server responses, i.e. similar to regular HTTP request/responses. They are not constantly streaming, i.e. something that that you might use a websocket to read.
Will 'confidential' messages/threads automatically be prevented from getting returned in API search results, or are there any code changes we need to make to prevent apps from breaking?
When new features like this get added to Gmail, it would be nice if the API release notes were simultaneously updated with an explanation of how the changes will impact the API. E.g. 2+ years later, there is still no explanation of whether or not gmailified inboxes can be accessed via the API.
Just trying the API to see what gets returned isn't useful, because then it's not clear whether or not you're building on an officially supported feature or just an undocumented implementation that's subject to change without warning.
As of now, there's not much info about changes in Gmail API with the coming of new features like confidential mode. But, you can stay updated with the official Gmail Blog about this.
When user clicks "Share on Twitter" button on my site, I'd like to prepopulate that tweet with an image (let's assume that image is served from my server).
It would be great if I could do it with Twitter's web intent, but that's apparently not possible: https://twittercommunity.com/t/tweet-intent-with-image/18740
It seems like I could use Twitter's POST media/upload API, but in that case I would have to implement 3-legged oAuth authorization? It also seems that is not possible to do it directly from the client (due to CORS issues and I'd have to expose my app's secret key in JavaScript code).
So I guess for this to work I'd need to have some server as middleman between the client running my API and Twitter's oAuth provider?
Is there any service that you could recommend that takes care of it - I found about oAuth.io, I guess they act as a described middleman?
The third possible approach I found would be via Twitter Cards. Is it possible to make it work since I dynamically generate the content via AJAX calls?
This lit a beam of hope in me, but I'm not totally sure what it means yet: https://twittercommunity.com/t/crawler-ajax-escaped-fragment-support/16129
My actual situation: I'm developing an Angular app that displays Highcharts charts and I'd like my users to be able to share their screenshots.
My current high-level idea is: Highcharts' export feature sends request to their server to generate the image, it creates an image and serves it there for 30 seconds - and I'm given it's link in a callback on client.
Now I can store that image somewhere else (my or Twitter's server?) and then we come to the problem described above.
I'd be grateful on any advice how to do this in a most elegant way that would also be as frictionless as possible for the users. (e.g. oAuth requires that they authorize the app to post on their behalf)
Ok, i found this link https://code.google.com/p/gwt-platform/wiki/CrawlerSupport#Using_gwtp-crawler-service that explain how you can make your GWTP app crawlable.
I got some GWTP experience, but i know nothing about AppEngine.
Google said its "crawlservice.appspot.com" can parse any Ajax page. Now I have a page "http://mydomain.com#!article" that has an artice that was pulled from Database. Say that page has the text "this is my article". Now I open this link:
crawlservice.appspot.com/?key=123456&url=http://mydomain.com#!article, then i can see all javascript but I couldn't find the text "this is my article".
Why?
Now let check with a real life example
open this link https://groups.google.com/forum/#!topic/google-web-toolkit/Syi04ArKl4k & you will see the text "If i open that url in IE"
Now you open http://crawlservice.appspot.com/?key=123456&url=https://groups.google.com/forum/#!topic/google-web-toolkit/Syi04ArKl4k you can see all javascript but there is no text "If i open that url in IE",
Why is it?
SO if i use http://crawlservice.appspot.com/?key=123456&url=mydomain#!article then Can google crawler be able to see the text in mydomain#!article?
also why the key=123456, it means everyone can use this service? do we have our own key? does google limit the number of calls to their service?
Could you explain all these things?
Extra Info:
Christopher suggested me to use this example
https://github.com/ArcBees/GWTP-Samples/tree/master/gwtp-samples/gwtp-sample-crawler-service
However, I ran into other problem. My app is a pure GWTP, it doesn't have appengine-web.xml in WEB-INF. I have no idea what is appengine or GAE mean or what is Maven.
DO i need to register AppEngine?
My Appp may have a lot of traffic. Also I am using Godaddy VPS. I don't want to register App Engine since I have to pay for Google for extra traffic.
Everything in my GWTP App is ok right now except Crawler Function.
So if I don't use Google App Engine, then how can i build Crawler Function for GWTP?
I tried to use HTMLUnit for my app, but HTMLUnit doesn't work for GWTP (See details in here Why HTMLUnit always shows the HostPage no matter what url I type in (Crawlable GWT APP)? )
I believe you are not allowed to crawl Google Groups. Probably they are actively trying to prevent this, so you do not see the expected content.
There's a couple points I wish to elaborate on:
The Google Code documentation is no longer maintained. You should look on Github instead: https://github.com/ArcBees/GWTP/wiki/Crawler-Support
You shouldn't use http://crawlservice.appspot.com. This isn't a Google service, it's out of date and we may decide to delete it down the road. This only serves as a public example. You should create your own application on App Engine (https://appengine.google.com/)
There is a sample here (https://github.com/ArcBees/GWTP-Samples/tree/master/gwtp-samples/gwtp-sample-crawler-service) using GWTP's Crawler Service. You can basically copy-paste it. Just make sure you update the <application> tag in appengine-web.xml to the name of your application and use your own service key in CrawlerModule.
Finally, if your client uses GWTP and you followed the documentation, it will work. If you want to try it manually, you must encode the Query Parameters.
For example http://crawlservice.appspot.com/?key=123456&url=http://www.arcbees.com#!service will not work because the hash (everything including and after #) is not sent to the server.
On the other hand http://crawlservice.appspot.com/?key=123456&url=http%3A%2F%2Fwww.arcbees.com%2F%23!service will work.