We are trying to upload a file to a Web Server using new PB HttpClient object. So far no luck. Here is java code that we trying to migrate to PB:

            connection.setRequestMethod("POST");
            connection.setRequestProperty("Connection", "Keep-Alive");
            connection.setRequestProperty("User-Agent", "Android Multipart HTTP Client 1.0");
            connection.setRequestProperty("Content-Type", "multipart/form-data; boundary="+boundary);
            
            outputStream = new DataOutputStream(connection.getOutputStream());
            outputStream.writeBytes(twoHyphens + boundary + lineEnd);
            outputStream.writeBytes("Content-Disposition: form-data; name=\"" + filefield + "\"; filename=\"" + q[idx] +"\"" + lineEnd);
            outputStream.writeBytes("Content-Type: " + contentType + lineEnd);
            outputStream.writeBytes("Content-Transfer-Encoding: binary" + lineEnd);
            outputStream.writeBytes(lineEnd);
            
            bytesAvailable = fileInputStream.available();
            bufferSize = Math.min(bytesAvailable, maxBufferSize);
            buffer = new byte[bufferSize];
            
            bytesRead = fileInputStream.read(buffer, 0, bufferSize);
            while(bytesRead > 0) {
                outputStream.write(buffer, 0, bufferSize);
                bytesAvailable = fileInputStream.available();
                bufferSize = Math.min(bytesAvailable, maxBufferSize);
                bytesRead = fileInputStream.read(buffer, 0, bufferSize);
            }