Hi am trying to send about 66.7 MB of compressed (599 uncompressed) of json data from java rest API. However at Angular(7) am getting response as
null. If I try same API with less data it works fine. Data being sent is byte array.Please find below snapshots for request ,response. Is there any workaround /or limitation. ?
We ran into the same problem. It seems since Chrome 80 there is a regression.
https://bugs.chromium.org/p/chromium/issues/detail?id=1097457&q=unexpected%20end%20of%20json%20input&can=2
Related
As part of a revit addin that I am running in design automation, I need to extract some data from the file, send it in json format to an external server for analysis, and get the result to update my revit file with new features. I was able to satisfy my requirement by following the indicated in: https://forge.autodesk.com/blog/communicate-servers-inside-design-automation, which worked as I needed, the problem arises when the size of the data to send for the analysis grows, it results in the following error:
[11/12/2020 07:54:08] Error: Payload for "onProgress" callback exceeds $ 5120 bytes limit.
When checking my data it turns out that the payload is around 27000 bytes, are there other ways to send data from design automation for Payloads larger than 5120 bytes?
I was unable to find documentation related to the use of ACESAPI: acesHttpOperation
There is no other way at the moment to send data from your work item to another server.
So either you would have to split up the data into multiple 5120 byte parts and send them like that or have two work items: one for getting the data from the file before doing the analysis and one for updating the file afterwards.
I have a RestFul server that is suppuse to return a large json object more specifically an array of objects to browsers. For example 30,000 points will have a size of 6.5mb.
But I get this content mismatch error in browser when speed is slow. I feel it is because large data throught rest api breaks up something. Even in Postman sometimes it fails to render even though i see data of 6.5 mb received.
My Server is in NodeJS. and return content-type header is application/json.
My Question is
Would it make more sense if I return a .json file. Will the browser be able to handle. If yes, then I will download the file and make front end changes.
Old URL - http://my-rest-server/data
Proposed Url - http://my-rest-server/data.json
What would be content-type in the proposed url?
Your client can't possibly expect to want all of the data at once but still, want their data fast data.
...but you might want to look into sending data in chunks and streams:
https://medium.freecodecamp.org/node-js-streams-everything-you-need-to-know-c9141306be93
I am currently consuming OData in a Xamarin App - and there is a significant performance issue on devices older than the iPhone 5. I believe it is because a simple request returns a significant amount of Xml - which has to be parsed by the phone.
Using Json cuts the payload size to 1/10th.
(note: I am referring to the fact it will reduce the amount of work that the client library has to do, not the fact it will transfer over the network more quickly)
How can I turn on Json in Simple.OData? Xml is basically unusable on iPhone 4.
Thanks
JSON support has been added to Simple.OData.Client 4.0. It should work fine now.
According to OData Protocol, add the following in http header will enable server using Json format:
Accept:application/json
Or add the $format in url like following:
BaseUrl\Customers?$format=application/json
I am working on a mobile app. Since I wanted a solution that would work on multiple platforms, I started with Cordova. As I have much data to handle and many views, I decided to use Ember.
I need to use three different JSON datasets that are updated rather frequently in the database. To enable the mobile app to work offline, I will have to store the JSON data, as well as update them when the database is changed.
Questions
How can I retrieve JSON from another server(CORS blocked)?
How can the retrieved JSON be saved on device? [HTML5 LocalStorage(preferred) or FileAPI]
How to read JSON file and send data as model to templates? (I guess Ember.$.getJSON can do this)
Any help is welcome. Thanks!
Update 1
Since I ran into many issues using Ember-data, I am not using it in my app.
Found this link for cross-domain with ajax
Update 2
CORS can be solved only by JSONP or by setting ACCESS-CONTROL-ALLOW-ORIGIN in the reponse of the server(I tried many other solutions, and failed)
Since the api is in my server, I did the latter.
For 2 and 3, I think I could use this SO question
This is what I found out :
JSON data from a server in different domain
You cannot read JSON data from a server in another domain. This is due to the Same-origin policy implemented in browsers. A browser will retrieve your JSON but will not allow you access to the same. There are two solutions(AFAIK) to this problem :
Using JSONP - I'm not going into the details, but there are many links available for this.
Allow CORS from server - When the server sends JSONified data, you can add additional headers for ACCESS-CONTROL-ALLOW-ORIGIN. After retrieving the JSON from server, the browser checks for this header to either block or allow CORS. I used some decorators for adding crossdomain headers and then my data was successfully read in the browser.
Saving the json data
HTML5 makes everything easier. In your javascript, you just have to use :
localStorage["application.state.data"] = JSON.stringify(json);
or
localStorage.setItem("application.state.data", JSON.stringify(json));
Retrieve works just the same
var data = JSON.parse(localStorage["application.state.data"]);
or
var data = JSON.parse(localStorage.getItem("application.state.data"));
I am developing an iOS app that uses a single context architecture. I make frequent calls to my API (PHP) and I want to "cache" the output for as long as the session is active. Right now I am saving the output to a variable that is defined in the app.s.
var contacts = {
contactsData: null
};
So I do this to save the output, is it really a good idea? Will it slow things down?
contacts.contactsData = output;
Thankful for all input!
It consist of how big is json file in mb. If device have enough RAM - it is the best way. Also be sure you save decoded json not just request response, so you will not decode it every time.
If json data is too big you must think about some kind of local storage. If Json is always the same (no need to synch every time) save it local.
If you need update it often you can upload extremly needed part with 1 limited request (API config needed) and other data with second background request.