I read here it's an option which must be turned on, but maybe it's changed since then.
I hope someone from Google comes here and respond to this, but I believe all feeds have the "discovery" part in them, which means they all point to the google hosted hub, however, the realtime approach only works if the publisher pings the hub as well when its feed(s) have been updated, and this can be done with Pingshot.
This is the behavior we have seen at Superfeedr for these feeds.
I've been working on some PuSH things recently, and since FeedBurner is still one of the main players out there it's worth noting that at least as of today, what I'm seeing is that any feed, regardless of the Pingshot setting, will publish the rel=self and rel=hub link tags, and a subscriber can subscribe to the topic using that information, and will receive webhooks on the callback when content changes. Basically, yes PuSH is supported for all Feedburner feeds. I have not yet found a Feedburner feed that doesn't publish content changes through the hub if there's an active subscription.
It is true that realtime PuSH is only going to happen if something pings Feedburner when new content is available in the source feed, but the documentation that I've seen if very unclear about the behavior in general. It actually makes it seem like PuSH is tied to Pingshot, which, as I just said, doesn't seem to be the case.
A couple additional bits of information:
The leases I'm getting for the feeds I've tested with are 5 days
Even if/when feeds are coming served over HTTPS (example), the rel=self address is not HTTPS, so the PuSH topic is potentially different than the feed address you may have captured or be using for polling purposes.
There are some interesting and useful pages on the hub's web interface (example), though I'm not sure why some things that seem like the should have data do not, so use with caution.
Related
I'm new to IOS development and wanted to make an app for learning purposes. My idea is that I have a Single Webpage that has a live count of how many people are in the gyms on my University's Campus.
How can I pull data from that webpage and show it on my app with a little bit of arithmetic such as :
Database how many people are usually in the gym at a particular time and then give predictions.
let users chose a preferential gym and give them notifications based on their regular check in times
if the rate of entry in the gym is high, then notify users to avoid going then. and vice-versa.
I don't want answer to all the above, but if you could give me a heading, that would be awesome!
EDIT 1:
The webpage looks like this : https://studentaffairs.psu.edu/CurrentFitnessAttendance/
Your question is too vague for a specific answer.
You need a back-end API into your web page. It could be as simples as a PHP or Python script that responds to http get requests and returns JSON data with the statistics you want. You'd then write your app to issue the appropriate query, parse the response, and display the results to your users.
Notifications would be more complicated. You'd probably need to set up remote notifications, which would require support on the server side and registering with Apple' remote notification service.
I've been using Stackoverflow for about 5 years now, and haven't felt the need to ask a single question yet, I've always found the answer i needed through previous threads. That just changed and I have a question that I really can't figure out. And it sounds so easy to do.
So the question is; how do you invite attendees, or reply/decline to calendar events on iOS under iOS 10? And please, no we don't want to bring up an EKEventViewController. We'd like to do this in our own UI. Under iOS 9 this was possible through just forcing EKAttendees objects in to the EKParticipants array with setValueForKey:. But under iOS 10 this produces an error saying 'Attendees can't be modified'.
I have used a Technical Support credit with Apple and got the reply that this was not possible. It is not possible using their APIs.
The closest to an answer i've got is to use IMIP (https://www.rfc-editor.org/rfc/rfc6047#section-2.2.1). If that's the way to go, could someone help me along on how to actually set that up? I'm not well versed in back-end development, I'm all front-end so I wouldn't really know where to start.
There also seems to be some CalDav servers on GitHub (https://github.com/mozilla-b2g/caldav) but I'm not sure how good they are, or exactly what you need to set one up.
So basically, is there anyone who could give a childs explanation to just how the heck we can send nice invites to calendar events. And if there are different solutions for Google, Apple accounts (obviously under the hood, but implementation-wise) that would be very helpful to know to.
Is this something that requires a ton of implementation on our own servers or is there some reliable service to use? That would be ideal. Maybe you should build one and you got at least one customer here :-)
Appreciate any help!
You cannot modify attendees using EventKit, but Apple already told you that:
I have used a Technical Support credit with Apple and got the reply that this was not possible. It is not possible using their APIs.
The hack with accessing the internal objects using KVC was, well, a hack and not documented API. No surprise they killed that.
So how do calendar invites work. That in itself is a very complex topic (consider delegation, resource booking like rooms, etc etc). There is a whole consortium which works on that (CalConnect), they also have a broad overview: Introduction to Internet Calendaring and Scheduling.
If you are serious into scheduling/calendaring software, it may make a lot of sense to join CalConnect for their interop events etc.
But you wanted a 'childs explanation'. I can't give that, but a short overview.
iTIP
iTIP is a standard which defines how scheduling messages flow, e.g. that you send a message to your attendee, your attendee responds back with accept/decline, what happens if a meeting is cancelled and all that.
It does NOT however specify how those messages are transferred. It is just a model on how the message flow works between the organiser and the participants.
Most 'big' calendaring systems (Exchange, Google, CalDAV servers like iCloud) use iTIP or at least something very similar.
iMIP
iMIP is a standard which defines on how to exchange iTIP messages using email. Say if you invite someone using iMIP, you'll send him a special email message with the iCalendar payload containing the invite. If your attendee accepts, his client will send back another iCalendar payload via email containing that.
iMIP is supported by a lot of systems and was, for a long time, pretty much the only way to exchange invitations between different systems (say Outlook and Lotus Notes).
However: the iOS email client does NOT support iMIP (unlike macOS or Outlook). So if someone sends you an iMIP invite to your iOS device, you won't be able to respond to that. (reality is more complex, but basically it is like that)
CalDAV
CalDAV is a set of standards around calendars stored on a server. Many many servers support CalDAV. E.g. iCloud uses CalDAV. Yahoo, Google, etc all support CalDAV. The important exception is Exchange, which doesn't support it.
In its basic setup CalDAV just acts as a store. You can use HTTP to store (PUT) and retrieve (GET, etc) events and todos using the iCalendar format.
In addition many CalDAV servers (e.g. iCloud) do 'server side scheduling'. That is, if you store an event to the server which is a meeting (has attendee properties), the server will fan out the invitations. Either internally if the attendees live on the same server, or again using iMIP.
Exchange
Exchange supports iMIP but not CalDAV. You usually access it using one of its own web service APIs, e.g. ActiveSync or Exchange Web Services. I'm no expert on them, but I'm sure that they allow you to create invites. Exchange&Outlook have an iTIP like invite flow.
etc
Is this something that requires a ton of implementation on our own servers or is there some reliable service to use?
This really depends on your requirements and needs. Do you need to process replies or just send out generic events?
If you want to host a calendar store, it probably makes sense to use an existing CalDAV server.
Calendar invitations are a very complex topic and you need to be very specific on your actual requirements to find a solution. In general interoperable invitations in 2017 are still, lets say 'difficult'.
P.S.: Since you've been using StackOverflow for about 5 years now, you should know that this question is too broad for this thing.
I am looking to build an iOS app and website that work 'together'.
What the plan is for each:
On the iOS side, it will be pushing information to the server in the form of a post. The users will then be able to vote up and down on the posts as well; which also implies they will be able to see the other users information (in real time).
The website will be viewing this information in real time and using the posts. If a post gets enough down votes the server should tell the website and apps to remove it.
I have experience with SQL. Although SQL does not seem to be the appropriate server choice - for what I want to do - given my experience with it. (I could definitely be wrong.)
I would like to host the information myself, however have heard that Parse is good about holding information for iOS apps. I just don't know whether it gives you enough freedom to work with websites as well.
TL;DR: What kind of database/datastore should I use for a real time queries that allows for push notifications?
All suggestions are welcome. Thank you.
Try Using FireBase
firebase.google.com
Documentation
My project is reliant on several API's, like Twitter and Youtube for example. Recently, Youtube deprecated their old API, and it caused issues with my team's iPad app.
We could have stayed ahead of the change if we were paying attention to Youtube's announcements of the upcoming deprecation. But alas, we were not and the idea of staying up to date with all of our dependencies manually(browsing the web) seems exhausting and inefficient.
I have found the following tool to help notify when changes occur with external library dependencies, https://libraries.io. However, this does not help with API dependencies.
Besides checking the API source webpages every so often, I was wondering if anyone had suggestions on how to stay notified and up-to-date with news regarding updates to a specified list of external API's?
After some time looking at different options, I have found a solution that is not perfect, but seems to work best at fitting this need.
Solution Description
This solution uses a combination of Twitter, Google Scripts, and website blogtrottr.com. I am creating a twitter list of reliable dev handles that often post updates on new API. For example I made a list that contained #twitterapi and #YouTubeDev. Used Google Scripts to create an online feed out of the twitter list. Then used blogtrottr to email me every time that feed gets a new posting.
Steps to Implement
Create a twitter list of reliable handles that often post about updates to their API
Create an RSS Feed from that Twitter list. The details for how to do this can be found here.
Plug that url that you get from Google Script into blogtrotter.
I did find some other ways to do this, but so far this is the only solution that was 100% free!
I've been doing some programming off and on for my brother, who is a stock trader. I'm wondering if it is possible to receive a push notification when a site server adds a page. For example, the site smallcapfortunes.com frequently adds pages that are simple extensions off the main URL. For example, the site regularly adds pages under URLs such as /neca/, /stev/, etc.
Are there existing methods to execute this? Or is this something I need to write myself? Has anyone here written anything like that?
I know there are existing sites to track basic updates to a single page. In my research, though, I haven't found anything like this.
Please let me know if there are any other details I need to provide.
Generally you can only get a push notification if a specific website offers that service.
Some websites publish a structured (XML) site map. If the one you're interested in does that, you could pull that sitemap on a regular basis and look for differences.
you're most likely going to want to use http://scrapy.org/ to go through the site and find new /neca/ and /stev/ urls, etc, then just trigger the script every so often.