RestSharp: Adding content-type

Question

In a previous version of RestSharp I was able to add a content-type:application/json

        RestClientOptions options = new RestClientOptions();
        options.BaseUrl = new Uri($"https://{_options.Auth0Domain}");
        var client = new RestClient(options);

        var request = new RestRequest("/oauth/token") { Method = Method.Post };
        request.AddHeader("content-type", "application/json");
        request.AddParameter("application/json", json, ParameterType.RequestBody);
        var response = await client.ExecuteAsync<Auth0MachineToMachineResponse>(request);

But after the big 107 release I get this error when I try to add the content-type, which is required by the end point I am calling:

"Misused header name, 'content-type'. Make sure request headers are used with HttpRequestMessage

Simone Luconi · Accepted Answer · 2022-01-10 10:48:39Z

1

Try with:

request.AddParameter("Content-Type", "application/x-www-form-urlencoded", ParameterType.HttpHeader);

It seems is case sensitive now?

answered Jan 10, 2022 at 10:48

Simone Luconi

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1 Comment

Alexey Zimarev Over a year ago

application/x-www-form-urlencoded content type is used by default when making post request with regular parameters. There's a very limited number of cases when you need to set the content type header manually with RestSharp.

Alexey Zimarev · Accepted Answer · 2022-01-14 10:29:42Z

1

Please do not add content type manually.

Use AddStringBody and the content type for the body parameter instead.

var request = new RestRequest("/oauth/token").AddStringBody(json, "application/json");
var response = await client.PostAsync<Auth0MachineToMachineResponse>(request);

answered Jan 14, 2022 at 10:29

Alexey Zimarev

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