AsyncHttpClient sets content-type inconsistently

Question

I use AsyncHttpClient to create an http POST request:

      AsyncHttpClient.BoundRequestBuilder reqBuilder;
      reqBuilder = httpClient.preparePost(url);
      reqBuilder.setBody(data);

It sometimes doesn't send content-type header and sometimes sends it as

      Content-Type: text/html; charset=ISO-8859-1

which causes our request to fail at [REST API] server side.

I am at a loss to understand why it is inconsistent.

Client is created as below:

      import com.ning.http.client.*;
       AsyncHttpClient httpClient = new AsyncHttpClient(
         new AsyncHttpClientConfig.Builder().build());

Answer 1

You can set headers by your self

reqBuilder.setHeader(String name, String value);

or add

reqBuilder.addHeader(String name, String value);