src/java.base/share/classes/sun/net/www/protocol/http/HttpURLConnection.java

*** 244,254 ****
              agent = agent + " Java/"+version;
          }
          userAgent = agent;
  
          // A set of net properties to control the use of authentication schemes
!         // when proxing/tunneling.
          String p = getNetProperty("jdk.http.auth.tunneling.disabledSchemes");
          disabledTunnelingSchemes = schemesListToSet(p);
          p = getNetProperty("jdk.http.auth.proxying.disabledSchemes");
          disabledProxyingSchemes = schemesListToSet(p);
  
--- 244,254 ----
              agent = agent + " Java/"+version;
          }
          userAgent = agent;
  
          // A set of net properties to control the use of authentication schemes
!         // when proxying/tunneling.
          String p = getNetProperty("jdk.http.auth.tunneling.disabledSchemes");
          disabledTunnelingSchemes = schemesListToSet(p);
          p = getNetProperty("jdk.http.auth.proxying.disabledSchemes");
          disabledProxyingSchemes = schemesListToSet(p);