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  1. JDK
  2. JDK-8145732

Duplicate entry in http.nonProxyHosts will ignore subsequent entries

    Details

    • Subcomponent:
    • Resolved In Build:
      b132
    • CPU:
      generic
    • OS:
      generic
    • Verification:
      Verified

      Backports

        Description

        FULL PRODUCT VERSION :
        java version "1.7.0_45"
        Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
        Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

        ADDITIONAL OS VERSION INFORMATION :
        Microsoft Windows [Version 6.1.7601]. Should also apply to other OS

        A DESCRIPTION OF THE PROBLEM :
        When using an http proxy (with -Dhttp.proxyHost) and specifying proxy exceptions (-Dhttp.nonProxyHosts) there is a bug when an entry in the list of nonProxyHosts is a duplicate.

        The reason is in the code of sun.net.spi.DefaultProxySelector at line 265:

        try {
           while (st.hasMoreTokens()) {
              pool.add(st.nextToken().toLowerCase(), Boolean.TRUE);
           }
        } catch (sun.misc.REException ex) {
        }

        If a duplicate item is added to the pool, an REException is thrown and silently discarded. Thus, all remaining items will not be added to the pool. A possible fix for this is, to add an additional paramter to the add method in line 265:

              pool.add(st.nextToken().toLowerCase(), Boolean.TRUE, true);

        This will skip the exception.


        STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
        Set nonProxyHosts with duplicate items. E.g.:

        -Dhttp.nonProxyHosts=example.com|example.com|myproxyexception.com



        EXPECTED VERSUS ACTUAL BEHAVIOR :
        EXPECTED -
        The domain myproxyexception.com should not be called through the proxy.
        ACTUAL -
        The domain myproxyexception.com is called through the proxy.

        REPRODUCIBILITY :
        This bug can be reproduced always.

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                • Assignee:
                  snikandrova Svetlana Nikandrova (Inactive)
                  Reporter:
                  webbuggrp Webbug Group
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                  • Created:
                    Updated:
                    Resolved: