A DESCRIPTION OF THE PROBLEM :
Using HttpRequest.newBuilder() to create a simple GET() request, and executing it using HttpClient's send() method sends an HTTP 1.1 header containing the content-length: 0 header+value.
Quite some services die on this header because they do not expect a body related header for a get.

The code in question is in Http1Request method headers() which contains:
        if (contentLength == 0) {
            systemHeadersBuilder.setHeader("Content-Length", "0");
        } else if (contentLength > 0) {
            systemHeadersBuilder.setHeader("Content-Length", Long.toString(contentLength));
            streaming = false;
        } else {
            streaming = true;
            systemHeadersBuilder.setHeader("Transfer-encoding", "chunked");
        }

This always sends a body related header. It should probably skip this part altogether for a GET.


FREQUENCY : always