How to get WinJS.xhr not to cache responses in Windows 8 - xmlhttprequest

I have no control over the web service I aam calling so adding header attributes is not an option. I have tried adding a timestamp in the url but that did not work. Any ideas?

A total hack would be to add random parameters to the URL request..
var URL = URL + "&rnd=" + someRandomString
The parameters will be ignored on the server end, but WinJS.xhr will think you are making a new request. Sorry that I don't have more time to dig in and see if there is a better way... but that was the first thing that popped into my head.

You could add the If-Modified-Since header to the headers property of the options parameter to the WinJS.xhr function.
WinJS.xhr({
url: "http://www.microsoft.com",
headers: {
"If-Modified-Since": "Mon, 27 Mar 2012 00:00:00 GMT"
} })
.done(function complete(result) {
// Report download.
xhrDiv.innerText = "Downloaded the page";
xhrDiv.style.backgroundColor = "#00FF00";
});
Check here.

Related

Webhook call failed. Error: Failed to parse webhook JSON response: Expect message object but got: [Chinese letters]

I'm building my own WebhookClient for dialog flow. My code is the following (using Azure Functions, similar to Firebase Functions):
module.exports = async function(context, req) {
const agent = new WebhookClient({ request: context.req, response: context.res });
function welcome(agent) {
agent.add(`Welcome to my agent!!`);
}
let intentMap = new Map();
intentMap.set("Look up person", welcome);
agent.handleRequest(intentMap);
}
I tested the query and the response payload looks like this:
{
"fulfillmentText": "Welcome to my agent!!",
"outputContexts": []
}
And the headers in the response look like this:
Transfer-Encoding: chunked
Content-Type: application/json; charset=utf-8
Server: Microsoft-IIS/10.0
X-Powered-By: ASP.NET
Date: Tue, 11 Dec 2018 18:16:06 GMT
But when I test my bot in dialog flow, it returns the following:
Webhook call failed. Error: Failed to parse webhook JSON response:
Expect message object but got:
"笀ഀ਀  ∀昀甀氀昀椀氀氀洀攀渀琀吀攀砀琀∀㨀 ∀圀攀氀挀漀洀攀 琀漀 洀礀 愀最攀渀琀℀℀∀Ⰰഀ਀  ∀漀甀琀瀀甀琀䌀漀渀琀攀砀琀猀∀㨀 嬀崀ഀ਀紀".
There's Chinese symbols!? Here's a video of me testing it out in DialogFlow: https://imgur.com/yzcj0Kw
I know this should be a comment (as it isn't really an answer), but it's fairly verbose and I didn't want it to get lost in the noise.
I have the same problem using WebAPI on a local machine (using ngrok to tunnel back to Kestrel). A friend of mine has working code (he's hosting in AWS rather than Azure), so I started examining the differences between our responses. I've notice the following:
This occurs with Azure Functions and WebAPI (so it's not that)
The JSON payloads are identical (so it's not that)
Working payload isn't chunked
Working payload doesn't have a content type
As an experiment, I added this code to Startup.cs, in the Configure method:
app.Use(async (context, next) =>
{
var original = context.Response.Body;
var memory = new MemoryStream();
context.Response.Body = memory;
await next();
memory.Seek(0, SeekOrigin.Begin);
if (!context.Response.Headers.ContentLength.HasValue)
{
context.Response.Headers.ContentLength = memory.Length;
context.Response.ContentType = null;
}
await memory.CopyToAsync(original);
});
This code disables response chunking, which is now causing a new and slightly more interesting error for me in the google console:
*Webhook call failed. Error: Failed to parse webhook JSON response: com.google.gson.stream.MalformedJsonException: Unterminated object at line 1 column 94 path $.\u0000\\"\u0000f\u0000u\u0000l\u0000f\u0000i\u0000l\u0000l\u0000m\u0000e\u0000n\u0000t\u0000M\u0000e\u0000s\u0000s\u0000a\u0000g\u0000e\u0000s\u0000\\"\u0000.\
I thought this could be encoding at first, so I stashed my JSON as a string and used the various Encoding classes to convert between them, to no avail.
I fired up Postman and called my endpoint (using the same payload as Google) and I can see the whole response payload correctly - it's almost as if Google's end is terminating the stream part-way through reading...
Hopefully, this additional information will help us figure out what's going on!
Update
After some more digging and various server/lambda configs, I spotted this post here: https://github.com/googleapis/google-cloud-dotnet/issues/2258
It turns out that json.net IS the culprit! I guess it's something to do with the formatters on the way out of the pipeline. In order to prove this, I added this hard-coded response to my POST controller and it worked! :)
return new ContentResult()
{
Content = "{\"fulfillmentText\": null,\"fulfillmentMessages\": [],\"source\": null,\"payload\": {\"google\": {\"expectUserResponse\": false,\"userStorage\": null,\"richResponse\": {\"items\": [{\"simpleResponse\": {\"textToSpeech\": \"Why hello there\",\"ssml\": null,\"displayText\": \"Why hello there\"}}],\"suggestions\": null,\"linkOutSuggestion\": null}}}}",
ContentType = "application/json",
StatusCode = 200
};
Despite the HTTP header saying the charset is utf-8, that is definitely using the utf-16le character set, and then the receiving side is treating them as utf-16be. Given you're running on Azure, it sounds like there is some configuration you need to make in Azure Functions to represent the output as UTF-8 instead of using UTF-16 strings.

How can I centrally set a `content-type` in Karate without it being overwritten to 'application/json' when there's a request body?

I have a * configure headers = read('classpath:configure-headers.js') in the Background of each of my feature files.
The configure-header.js looks like:
function() {
var out = {'Some-Header-We-Need': 'value'};
var authToken = karate.get('authToken');
if(authToken) {
out['Authorization'] = 'Bearer ' + authToken;
out['Content-Type'] = 'application/vnd.mycompany+json';
}
return out;
}
These headers always appear where I expect, except that when I'm making a PUT or PATCH or POST, the Content-Type header is being set to application/json. I can get my desired header by setting it before the call, e.g.
Given path myPath
And header Content-Type = 'application/vnd.mycompany+json'
And request read('classpath:requestBody.json')
When method POST
What can I do to not need to rewrite this header everywhere?
Wow, you actually did surface a bug in Karate that went un-detected for a long time. Thanks !
I've opened an issue here, and the fix is in the develop branch: https://github.com/intuit/karate/issues/510
Hopefully you can manage for a little while with the work-around. If urgent we can release a patch version.

TRON not using request.header

I am using Xcode 8.3.3 (8E3004b)
I am using TRON (which includes Alamofire) to make HTTP Request to my REST API.
I have been successful getting a simple API working with this setup. I am trying to connect to a different API, which requires me to set the headers. It is this API that is throwing a Status 415 server error.
I have the following code to make the request via TRON. According to the TRON Github page, I should be ae to set the header like this:
request.headers = ["Content-Type":"application/json"]
I have also tried:
request.headerBuilder.headers(forAuthorizationRequirement: AuthorizationRequirement.allowed, including: ["Content-Type":"application/json"])
I tried adding a few different ways of writing that, but nothing seems to work.
Here's a bigger section of the code so you can see the context
let urlSubfix = "\(Constant.REST_MOBILE)\(Constant.REGISTER)"
let request: APIRequest<RegisterApiResult, JSONError> = tron.request(urlSubfix)
request.method = .put
// request.headers = ["Content-Type":"application/json"]
let header = request.headerBuilder.headers(forAuthorizationRequirement: AuthorizationRequirement.allowed, including: ["Content-Type":"application/json"])
request.headers = header
request.perform(withSuccess: { (registerApiResult) in
print("Successfully fetched our json object")
completion(registerApiResult)
}) { (err) in
print("Failed to fetch json...", err)
}
Here is the actual error from my log:
Failed to fetch json... APIError<JSONError>(request: Optional(http://www.slsdist.com/eslsd5/rest/mobileservice/register), response: Optional(<NSHTTPURLResponse: 0x618000028c20> { URL: http://www.slsdist.com/eslsd5/rest/mobileservice/register } { status code: 415, headers {
"Content-Length" = 0;
Date = "Sat, 22 Jul 2017 22:23:14 GMT";
Server = "Microsoft-IIS/7.5";
"X-Powered-By" = "Undertow/1, ASP.NET";
} }), data: Optional(0 bytes), error: Optional(Alamofire.AFError.responseValidationFailed(Alamofire.AFError.ResponseValidationFailureReason.unacceptableStatusCode(415))), errorModel: Optional(Go_Cart.Service.JSONError))
As you can see I have tried to set the headers a couple different ways, but neither of them seems to take affect. Any help or advice from anyone would be helpful.
Thanks in advance.

BadRequest when try Create folder via REST

I've downloaded a exampled that show the files in the "Shared with everyone" folder in my OneDrive for Bussiness. It's work fine!
But, when I try to create a Folder or File (without content) like this documentation the response became with a BadRequest .
The request goes like:
string requestUrl = String.Format(CultureInfo.InvariantCulture, "{0}/files", serviceInfo.ApiEndpoint);
// Prepare the HTTP request:
using (HttpClient client = new HttpClient())
{
Func<HttpRequestMessage> requestCreator = () =>
{
HttpRequestMessage request = new HttpRequestMessage( HttpMethod.Post, requestUrl);
request.Headers.Add("Accept", "application/json;odata.metadata=full");
request.Content = new StringContent(#"{'__metadata':{'type':'MS.FileServices.Folder'},Name:'TestFolder'}");
request.Content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
return request;
};
}
And the response is a BadRequest.
I think that my problem is in the "__metadata"'s json value. It´s is correct? Where can I find a working example implementing this operations?
Thanks in advance!
EDIT: Changing the API Endpoint from "/_api/web/getfolderbyserverrelativeurl('Documents')/files" to "_api/files" the error became to: "The property '__metadata' does not exist on type 'MS.FileServices.FileSystemItem'. Make sure to only use property names that are defined by the type."
I´m think I foward in this. But, I still continue with problems.
I am not sure if this can be of any help to you, as this pertains to oneDrive and not oneDrive for business.
Also the documentations are confusing :)
according to the documentation the request should be as follow:
POST https://apis.live.net/v5.0/me/skydrive
Authorization: Bearer ACCESS_TOKEN
Content-Type: application/json
{
"name": "My example folder"
}
if you can see that in the header there is authorization access token
I don't see that you sent to the server any access token. and that is why you had a bad request.
I am trying to below way to create a folder in SP and it's working for me. Hope it will work for you as well.
Create a folder using SharePoint Web API -
POST https://<Domain>.sharepoint.com/_api/web/folders
Accept: "application/json;odata=verbose"
Content-Type: "application/json"
{
"ServerRelativeUrl": "/Shared Documents/<Folder-Name>"
}

JayData oData request with custom headers

I need to send custom headers to my wcf oData Service but with the following function the headers dont get modified.
entities.onReady(function () {
entities.prepareRequest = function(r) {
r[0].headers['APIKey'] = 'ABC';
};
entities.DataServiceClient.toArray(function (cli) {
cli.forEach(function (c) {
console.log(c.Name)
});
});
});
headers are not affected. any clue?
thanks!
It seems that the marked answer is incorrect. I was suffering from a similar issue, but got it working without changing datajs.
My issue was that I was doing a cross domain (CORS) request, but didn't explicitly allow the headers. After I added the correct CORS header to the webservice, it worked.
EDIT
On second thought, it seems like there is still something broken in JayData for MERGE requests.
This is NOT CORS and has nothing to do with it!
see JayData oData request with custom headers - ROUND 2
the bellow "hack" works, but the above question should take this problem to a new level.
----------
Old answer
Nevermind I found a solution.
It seems like prepareRequest is broken in JayData 1.3.2 (ODataProvider).
As a hack, I added an extraHeaders object in the providerConfiguration (oDataProvider.js):
this.providerConfiguration = $data.typeSystem.extend({
//Leave content unchanged and add the following:
extraHeaders: {}
}, cfg);
then at line 865 modify requestData like this:
var requestData = [
{
requestUri: this.providerConfiguration.oDataServiceHost + sql.queryText,
method: sql.method,
data: sql.postData,
headers: _.extend({
MaxDataServiceVersion: this.providerConfiguration.maxDataServiceVersion
},this.providerConfiguration.extraHeaders)
},
NOTE: Iam using lodash for conveniance, any js extend should do the trick.
then you just create your client like this:
var entities = new Entities.MyEntities({
name: 'oData',
oDataServiceHost: 'http://myhost.com/DataService.svc',
maxDataServiceVersion: "2.0",
//enableJSONP: true,
extraHeaders: {apikey:'f05d1c1e-b1b9-5a2d-2f44-da811bd50bd5', Accept:'application/json;odata=verbose'}
}
);