AL HttpRequest /Httpclient "Get" Method with Key Content-Type

[sankarvinop]

Bug
Key "Content-Type" unable to add to HttpHeaders if we get http headers from HttpRequestMessage.Get(Headers).

Steps and/or AL code to reproduce the behavior:

1. Go to '...'
   Create functions and local variables
   Headers : HttpHeaders;
   RequestMessage : HttpRequestMessage ;

Add code.

RequestMessage.GetHeaders(Headers);
RequestHeaders.Add('Content-Type','application/x-www-form-urlencoded');

and try to call this function from BC. it will hit an error while adding key.

Expected behavior
As per standard content-type, it must be added into HttpContent. but some of the API calls, we need to add this into part of header. because other system expect content-type key from header. if not exisit will simply rejects.

Screenshots
If applicable, add screenshots to help explain your problem.

Versions:
AL Verison: 2.0.28254

• Business Central: W1 version

[ftornero9]

That is a known issue, you first need to remove the "Content-Type", in your code like this:

RequestHeaders.Remove('Content-Type'');
RequestHeaders.Add('Content-Type','application/x-www-form-urlencoded');

[sankarvinop]

I have already tried. still getting error message.

local procedure CheckHttpAPI()
var
Httpclient: HttpClient;
httpRequest: HttpRequestMessage;
httpResponse: HttpResponseMessage;
HttpContent: HttpContent;
HttpHeader: HttpHeaders;
begin
httpRequest.GetHeaders(HttpHeader);
HttpHeader.Remove('Content-Type');
HttpHeader.Add('Content-Type', 'application/x-www-form-urlencoded');

end;

Microsoft Dynamics 365 Business Central

Misused header name. Make sure request headers are used with HttpRequestMessage, response headers with HttpResponseMessage, and content headers with HttpContent objects.

OK

[javith2dj]

Try

Httpcontent.Getheaders(Httpcontentheader);
HttpcontentHeader.Add('Content-Type', 'application/x-www-form-urlencoded');

And set the content to httprequestmessage.

[sankarvinop]

I knew it will work if i added into content header. i also mentioned in my expected behavior.
But i want to add this key in RequestHeader, because other system validates and accept if i add only in the request header.

[larswestman]

Isn't this the same: [https://github.com//issues/3579]

[StanislawStempin]

Yes, it looks like the question has been answered in #3579

[sankarvinop]

I cannot use Getheader from content and assign keys. the reasons is ,I have to use GET method to call API.
Currently It wont support, if i add key 'Content-Type' in Content Header with GET method to call API.

I knew this is not a standard way of doing. but the API which i call expect this way to call API.

[sankarvinop]

This is the dot net code sample. to call API.

`var client = new RestClient("https://apisandbox.iras.gov.sg/iras/sb/Authentication/SingPassAuth?scope=REPLACE_THIS_VALUE&callback_url=REPLACE_THIS_VALUE&state=REPLACE_THIS_VALUE");

var request = new RestRequest(Method.GET);
request.AddHeader("Accept", "application/json");
request.AddHeader("Content-Type", "application/json");
request.AddHeader("x-ibm-client-secret", "REPLACE_THIS_KEY");
request.AddHeader("x-ibm-client-id", "REPLACE_THIS_KEY");
IRestResponse response = client.Execute(request);`

i have to add both below items and rest request method should be "GET"
request.AddHeader("Accept", "application/json");
request.AddHeader("Content-Type", "application/json");

due to validation in AL code, i am unable to this

[StanislawStempin]

Can you paste how the actual http request looks like? I'm not familiar with the RestClient or RestRequest classes from C# (I assume you're using RestSharp?).

The AL http stack is built on top of the standard C# HttpClient stack and the error message that you see comes directly from .NET. Are you sure that RestRequest.AddHeader is equivalent to HttpRequest.Header?

Perhaps try changing your C# code to the standard HttpClient first to see if it is supported. Then it will most likely work in AL as well.

[sankarvinop]

Please find code implemented in using httpclient. and able connect successfully.
TryAddWithoutValidation is missing in httpheader.

`var header = httpClient.DefaultRequestHeaders;
header.Add('accept',"application/json");//ACCEPT header
header.TryAddWithoutValidation("Content-Type", "application/json; charset=utf-8");
header.Add("x-ibm-client-id", singpassConfig.XIBMClientId);
header.Add("x-ibm-client-secret", singpassConfig.XIBMClientSecret);
HttpResponseMessage response = await httpClient.GetAsync(singPassAuthUrl);
if (response.IsSuccessStatusCode)

{

}`

[sankarvinop]

Hello Stanislaw Stempin,, Please let me know if you need any other information. Thanks