Re: [Jessie-discuss] 1.4 support? ("1.4 not enabled")

[Martin Egholm Nielsen]

Hi Casey,

> Martin> I'm trying to use Jessie as a replacement for Sun's
> Martin> implementation.  However, I reach a point where Sun's
> Martin> "java.net.Socket" invokes a method on Jessie's SSLSocket that
> Martin> is not supported (#isInputShutdown):
--- 8< ---
> Martin> If I scan the source for Jessie's SSLSocket, I however see
> Martin> that there is some commented code in #isInputShutdown:
--- 8< ---
> Martin> So, my question: Should one avoid using Jessie with Suns Java
> Martin> 1.4, and do you know whether the new GCJ 4.0 has been
> Martin> "designed" to avoid these 1.4 methods?

> I started developing Jessie so it could run on Sun's 1.2-1.4 runtimes,
> as well as on Classpath-derived ones. At the time, there was a
> divergence between Classpath and Java 1.4 in the Socket class (I don't
> know if this is still the case) 
It is - that is what I saw today. Scanning Socket.java from GCJ HEAD and 
comparing to Sun's.

> and you could configure the build (with autoconf) to target Java 1.2,
> Classpath, or Java 1.4. In the latter case, the commented stuff above
> would not be, and the exception would.
Oh, so configure no longer supports this? Doesn't look like it, no:
./configure --help | grep [interesting]

  --enable-maintainer-mode enable make rules and dependencies not useful
                          (and sometimes confusing) to the casual installer
  --enable-jaxp           Compile with JAXP support (default=yes).
  --enable-single-jar     Put all built classes into `jsse.jar' 
(default=no).
  --enable-awt            Compile AWT callbacks (default=yes)
  --enable-swt            Compile SWT callbacks (default=no)
  --disable-provider-only Only compile JSSE provider, not the cleanroom 
JSSE
                          classes.

However, looking at these options made me wonder:
1) What are the jaxp stuff for - and what will I miss if disabling 
(going embedded)? My first guess was for storing sessions as XML, but 
otherwise?
2) What are the AWT callback stuff?

> I think I abandoned supporting Sun's runtimes, and just focused on
> making Jessie work with Classpath. If Classpath is to the point where
> the 1.4 methods are all present, then I should update the source to
> reflect this.
So you mean, the reason for omitting these methods was that Classpath 
didn't have implementations for those methods, or erronous 
implementations? Just so that I know what to look for if trying (with 
GCJ 3.4.3 for starters)...

> In the meantime, I'd just suggest uncommenting those parts of those
> methods. All the code to support Java 1.4 should be there, just
> commented out.
All places are marked with Unsupported-1.4-exceptions, right - just to 
know what to grep for...

Thanks for now,
 Martin Egholm