sending data using in headers using REST POST method

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Posted on by Sulav Thapaliya

Hello All,

I am trying to send data using an external API. It needs the data to be sent in header itself. When I am trying to send the data. I get error message as

Microsoft Dynamics NAV
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A call to System.Threading.Tasks.Task`1[System.String].Result failed with this message: '"UTF-8"' is not a supported encoding name.
Parameter name: name
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OK
---------------------------

Any help would be appreciated

Thanks,

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Stefano Demiliani 37,166 Most Valuable Professional on at

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How have you encoded the request message?

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Sulav Thapaliya 12 on at

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I used UTF8 encoding for this. Below is the code.

stringContent := stringContent.StringContent(data,encoding.UTF8,'application/x-www-form-urlencoded');

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Guillem Padilla 427 on at

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Hello Sulav,

Could you share with us how are you catching the response?

Thanks

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Suresh Kulla 50,269 Super User 2026 Season 1 on at

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Share the code you are using to call the API

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Sulav Thapaliya 12 on at

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SMSSetup.GET;

SMSSetup.TESTFIELD(SMSSetup."SMS API URL");

SMSSetup.TESTFIELD("SMS Authentication Token");

SMSSetup.TESTFIELD(Identity);

IF GUIALLOWED THEN

Window.OPEN(Text000);

data := 'auth_token=' + SMSSetup."SMS Authentication Token";

data += '&from=' + SMSSetup.Identity;

data += '&to='+PhoneNo;

data += '&text='+COPYSTR(MessageText,1,SMSSetup."SMS Text Length");

stringContent := stringContent.StringContent(data,encoding.UTF8,'application/x-www-form-urlencoded');

ReturnValue := CallRESTWebService(SMSSetup."SMS API URL",'',SMSSetup.Method,stringContent,HttpResponseMessage);

result := HttpResponseMessage.Content.ReadAsStringAsync.Result;

IF GUIALLOWED THEN

Window.CLOSE;

IF NOT ReturnValue THEN

EXIT;

result := HttpResponseMessage.Content.ReadAsStringAsync.Result;

MESSAGE('%1',result.ToString);

separator := ',';

resultParts := result.Split(separator.ToCharArray());

statusCode := FORMAT(result);

ResponseCode := COPYSTR(statusCode,STRPOS(statusCode,'response_code') + 16,3);

IF (ResponseCode = '200') THEN BEGIN

EXIT(TRUE);

END

ELSE BEGIN

EXIT(FALSE);

END;

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Muratvzr 743 on at

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Here is the code for I am using for calling rest api HttpWebRequestMgt Codeunit great for this also if you want to deal with json you can use you can look at this blog post

https://dynamics.is/?p=2637

BodyPassword := STRSUBSTNO(bodyt,GlobApiKey);

Url := STRSUBSTNO('%1/token',BaseUrl);

HttpWebRequestMgt.Initialize(Url);

HttpWebRequestMgt.DisableUI;

HttpWebRequestMgt.SetMethod('POST');

HttpWebRequestMgt.SetContentType('application/json');

HttpWebRequestMgt.AddBodyAsAsciiText(BodyPassword);

TempBlob.INIT;

TempBlob.Blob.CREATEINSTREAM(Instr);

IF NOT HttpWebRequestMgt.GetResponse(Instr,HttpStatusCode,ResponseHeaders) THEN

HttpWebRequestMgt.ProcessFaultResponse('');

IF HttpStatusCode.ToString <> HttpStatusCode.OK.ToString THEN

ERROR('Connection Error');

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Guillem Padilla 427 on at

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Your code is sending charset correctly (charset=utf-8), it seems to be an error on API Response, surely the API is returning charset like this: charset=UTF8

When you execute ReadAsStringAsync it validates the charset name (UTF8) and then you get the error.

A workaround is to use ReadAsByteArrayAsync and parse the result.

Share your progress with us :)

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