+ public String doDeleteDr_Sub(DR_Sub delSub, ApiError err) {
+ logger.info( "entry: doDeleteDr_Sub() " );
+ byte[] postData = delSub.getBytes();
+ logger.info( "post fields=" + postData );
+ String responsemessage = null;
+ String responseBody = null;
+
+ try {
+
+ uc.setRequestMethod("DELETE");
+
+ uc.setRequestProperty("Content-Type", "application/vnd.att-dr.subscription");
+ uc.setRequestProperty( "charset", "utf-8");
+ uc.setRequestProperty( "X-ATT-DR-ON-BEHALF-OF", "DGL" );
+ //uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
+ uc.setUseCaches(false);
+ uc.setDoOutput(true);
+ OutputStream os = null;
+ int rc = -1;
+
+ try {
+ uc.connect();
+ os = uc.getOutputStream();
+ //os.write( postData );
+
+ } catch (ProtocolException pe) {
+ // Rcvd error instead of 100-Continue
+ try {
+ // work around glitch in Java 1.7.0.21 and likely others
+ // without this, Java will connect multiple times to the server to run the same request
+ uc.setDoOutput(false);
+ } catch (Exception e) {
+ }
+ }
+ rc = uc.getResponseCode();
+ logger.info( "http response code:" + rc );
+ responsemessage = uc.getResponseMessage();
+ logger.info( "responsemessage=" + responsemessage );
+
+
+ if (responsemessage == null) {
+ // work around for glitch in Java 1.7.0.21 and likely others
+ // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
+ String h0 = uc.getHeaderField(0);
+ if (h0 != null) {
+ int i = h0.indexOf(' ');
+ int j = h0.indexOf(' ', i + 1);
+ if (i != -1 && j != -1) {
+ responsemessage = h0.substring(j + 1);
+ }
+ }
+ }
+ if (rc == 204 ) {
+ responseBody = bodyToString( uc.getInputStream() );
+ logger.info( "responseBody=" + responseBody );
+
+ } else {
+ err.setCode(rc);
+ err.setMessage(responsemessage);
+ }
+
+ } catch (ConnectException ce) {
+ errorLogger.error( DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION, provURL, ce.getMessage() );
+ err.setCode( 500 );
+ err.setMessage("Backend connection refused");
+ } catch (Exception e) {
+ System.err.println("Unable to read response " );
+ e.printStackTrace();
+ } finally {
+ uc.disconnect();
+ }
+ return responseBody;
+
+ }