Attempt to fix proxy handling

httpservices/src/main/java/ucar/httpservices/HTTPSession.java

@@ -1182,6 +1182,11 @@ public HTTPSession setCredentials(Credentials creds)
                 connmgr.setDefaultMaxPerRoute((Integer) value);
             } /* else ignore */
         }
+        // Add proxy, if any
+        if(httpproxy != null)
+            rcb.setProxy(httpproxy);
+        else if(httpsproxy != null)
+            rcb.setProxy(httpsproxy);
         RequestConfig cfg = rcb.build();
         return cfg;
     }