Thread: Re: [Php-java-bridge-users] Very first call to PHPJavaBridge fails

I have similar problem, did you  managed to fix it?


In my case i'm using FOP to printout a PDF.
But i get this error:
[13-Dec-2009 13:33:54] php: protocol error: , Invalid document end at col 1.
Check the back end log for OutOfMemoryErrors.
[13-Dec-2009 13:33:54] PHP Fatal error:  Call to a member function read() on
a non-object in ....\Java.inc on line 207
And this happens only the first call after I haven't used it for some time.


I'm sure i'm using the latest version - 5.5.4.1 and that the Java.inc is the
some version (it's from the jar)(definitely wont be allow to include through
URL).
Am running the PHP/Java Bridge Server, not the war file in a Application
Server. I tried running it in Tomcat and it works, but i too am not allowed
to use it.

I find it hard to debug the Java.inc, I think that the first call it does
not send any request to the PHP/Java Bridge Server, nor try to start it and
the second one right after this it works fine.


Best Regards,
Dimitar Stefanov

PS: It's my first time posting on mailing list so i may have messed up
something :)
----------------------------------------------------------------------------------

> What do you mean by "fetch directly from the backend"?

Use the require command I have given. Please fetch Java.inc directly
from the back end, use

<?php require_once("http://localhost:8080/JavaBridge/java/Java.inc"<http://localhost:8080/JavaBridge/java/Java.inc>
);
...
?>

Or make sure that the version of your Java.inc matches the version of
your back end.


> What's the backend here?

The PHP/Java Bridge application.


> can configure the path to the
> PHPjavaBridge installation in a variable

Which seems to be the problem here. You have probably confused the
versions. Or the Java daemon you have written crashes immediately.


> I'm not allowed to use a tomcat although I'd like to have it.

Interesting. I thought you were running the back end as a daemon.


Regards,
Jost Boekemeier

Hi,

I cannot reproduce this problem. Which operating system are you using? Can
you please run JavaBridge.jar as follows:

  java -jar JavaBridge.jar SERVLET_LOCAL:8080 4 pjb.log

and reproduce this bug and post the pjb.log file?




However, please use a JEE or servlet engine back end.

Since version 5.5.4 the PHP/Java Bridge supports http/1.1 chunked
connections. The standalone JavaBridge.jar option SERVLET emulates a servlet
engine, so we've added two new classes to it:
http://php-java-bridge.cvs.sourceforge.net/viewvc/php-java-bridge/php-java-bridge/server/php/java/bridge/http/ChunkedInputStream.java?revision=1.1&view=markupand
http://php-java-bridge.cvs.sourceforge.net/viewvc/php-java-bridge/php-java-bridge/server/php/java/bridge/http/ChunkedOutputStream.java?revision=1.1&view=markup
It may well be that they contain a bug.


> I tried running it in Tomcat and it works, but i too am not allowed
> to use it

This policy doesn't make sense to me. If you start JavaBridge.jar with the
SERVLET option, you *are* using a servlet engine. It contains bugs which
have been fixed in Tomcat long ago.


Regards,
Jost Boekemeier

Hello!

I think that the first call it does not send any request to the PHP/Java Bridge Server, nor try to start it
I cannot reproduce this problem

I guess Dimitar has started a Java process from PHP. This long running Java process has been killed by Apache or IIS. The PHP script still refers to this zombie process because the PHP maintainers have difficulties with the Winsock implementation, which cannot detect broken connections properly, see PHP bug #49447


> This policy doesn't make sense to me.

I guess he doesn't have shell access, so he wants to start a background Java daemon from a PHP script. It might be possible through "nohup" or "javaw.exe", but his system admin might not be amused, seeing all those Java processes running on his PHP web server.


Peter



      

Hi Peter,

> [someone has] started a Java process from PHP.  [the bridge] start[s] a
background Java daemon from a PHP script.

Thank you very much for this problem report.

I will remove the java autostart feature in version PHP/Java Bridge 5.5.5.
Apache or IIS SAPI users should use a servlet or JEE back end and nothing
else.


See this blog

http://wiki.neo4j.org/content/PHP#Installation_Headaches

for example.  Instead of fixing his tomcat back end, he is starting a Java
daemon from a Apache thread(!) as a workaround.


Regards,
Jost Boekemeier