[HARMONY-3717] [classlib][luni] java.net.HttpURLConnection.getResponseCode() anomoly

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Component/s: App-Oriented Bug Reports, Classlib
• Environment: Windows XP SP2; c:\java\hre50\bin\java -version; svn = r530500, (Apr 20 2007), Windows/ia32/msvc 1310, release build
• Estimated Complexity: Unknown
• Assignee: Tim Ellison
• Reporter: Chris Elford
• Created: 21/Apr/07 01:09
• Updated: 28/Nov/07 22:39
• Resolved: 26/Nov/07 13:47

Description

I am trying to see if OpenJNLP works with Harmony. OpenJNLP is a pretty old implementation of the JNLP protocol w/o security. I hacked OpenJNLP to recognize Windows XP and then try to load a jnlp app from the the web (http://www.eclipse.org/swt/jws/controlexample.jnlp in this case). It fails with

java.io.IOException: Bad Request
at org.nanode.jnlp.JNLPParser$URLJNLPParser.openInputStream(JNLPParser.java:491)
at org.nanode.jnlp.JNLPParser.parse(JNLPParser.java:119)
at org.nanode.jnlp.JNLPParser.parseDescriptor(JNLPParser.java:292)
at org.nanode.app.openjnlp.DefaultAppHandler.handleOpenURL(Unknown Source)
at org.nanode.app.OpenJNLP.main(Unknown Source)
Launching failed: http://www.eclipse.org/swt/jws/controlexample.jnlp

[It works with the Sun JVM].

Instrumenting the code shows that the following basic code is executed
URLConnection uc = srcURL.openConnection();
if (uc instanceof HttpURLConnection) {
HttpURLConnection huc = (HttpURLConnection) uc;
if (huc.getResponseCode() != HttpURLConnection.HTTP_OK)

{ throw new IOException(huc.getResponseMessage()); }

}

getResponseCode() is returning error 400 and thus the app throws the exception. I noted that if I insert a call to huc.getHeaderFields() before the if that checks the response code, I will subsequently get a response 200 (HTTP_OK) and things proceed. It appears like there is some sort of race or deferral in populating the response codes here. Note that instead of calling huc.getHeaderFields(), I tried putting a 5 sec sleep in and it did NOT fix it. It doesn't look like it is a normal race.

Note that it works with the Sun VM without any mods at all.

Note that I am using a proxy server via -Dproxyset=true -DproxyHost=xxx -DproxyPort=yyy at the java command line.

Issue Links

• is related to: HARMONY-4775 [classlib][luni][eclipse] Eclipse fails to download updates