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  1. JDK
  2. JDK-8241378

j.net.URLConnection::getHeaderFieldKey(int) behavior does not reliably conform to its specification

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    • Resolved In Build:
      b25

      Description

      The following happens with HttpURLConnection

      Consider the following code with the specs quoted

              URLConnection urlConnection = new URL("http://oracle.com").openConnection();

              // "It returns null if there are fewer than n+1 fields.
              // This method can be used in conjunction with the getHeaderFieldKey method
              // to iterate through all the headers in the message."
              System.out.println(urlConnection.getHeaderField(0));

              // Returns the key for the nth header field.
              // It returns null if there are fewer than n+1 fields.
              System.out.println(urlConnection.getHeaderFieldKey(0));

              Map<String, List<String>> headerFields = urlConnection.getHeaderFields();
              System.out.println("headerFields = " + headerFields);

      The output would be:

      HTTP/1.0 301 Moved Permanently
      null
      headerFields = {null=[HTTP/1.0 301 Moved Permanently], Connection=[close], Content-Length=[0], Location=[https://www.oracle.com/]}


      getHeaderField(int) could not be used in conjunction with getHeaderFieldKey(int) and behavior of the latter doesn't conform to its specification

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              Assignee:
              michaelm Michael McMahon
              Reporter:
              dbessono Dmitry Bessonov
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