Thread: [Php-java-bridge-users] Some questions about pure PHP implementation and SERVLET / INET modes

Hello,

I'm developing Simple Groupware and JavaBridge 4.1.8 is used to call
the jCIFS Java library from PHP (bringing CIFS and NTLM to the PHP
world). Tests are done on WinXP SP2, Sun Java 1.6.0_02.

My questions:

1) pure PHP implementation:
does it only support SERVLET_LOCAL / SERVLET ?
(start java -jar JavaBridge.jar SERVLET_LOCAL:8080 3)

Where is the difference between SERVLET and INET ? Is anyone of them
faster ?

I tried INET / INET_LOCAL and got:
(start java -jar JavaBridge.jar INET_LOCAL:8080 3)
Notice: Undefined index: content_length in
H:\sgs\src\lib\java\Java.inc on line 1259

Warning: fread() [function.fread]: Length parameter must be greater
than 0 in H:\sgs\src\lib\java\Java.inc on line 1259
protocol error: , Invalid document end at col


2) pure PHP implementation for PHP 5.0 and 4.x:

Why has the version to be > 5.1.2 ? Only too old, any bugs ?
Is it possible to adapt the pure PHP implementation for PHP4 ?


3) Binaries for PHP 5.2.x

I found the "legacy" package containing binaries for older php
versions, is it possible to build a new one for the latest php
versions ?
At least for win32, this would be a real time-saver for a lot of people.

Thanks,
bye
Thomas

Hi Thomas,

first of all thank you very much for the feedback.

Since version 4.1.8 the pure PHP implementation also supports INET and INET_LOCAL, see the NEWS
file.

The difference between SERVLET/SERVLET_LOCAL and INET/INET_LOCAL is that the former reads
meta-information like X_JAVABRIDGE_OVERRIDE_HOSTS and X_JAVABRIDGE_OVERRIDE_REDIRECT. This
information is used to select the fastest available channel, which is INET/INET_LOCAL on windows
and named pipes on Unix.

In theory the INET/INET_LOCAL channel should be faster, because the SERVLET* "meta" channel
requires one additional round-trip. But on modern operating systems this shouldn't be a problem.


> Why has the version to be > 5.1.2 ? Only too old, any bugs ?

Well, the functionality needed by the bridge is there, but all PHP 5 versions < 5.1.2 
have serious problems. Just remove the check from Java.inc, run the "bench" test on 5.0.4 and 
you'll see what I mean. :)


> Is it possible to adapt the pure PHP implementation for PHP4 ?

try/catch etc. is not available in PHP4. The binary download contains a php_java.dll for PHP4,
which could be used as follows:

 // check if the PHP4 extension is loaded. Otherwise load Java.inc
 if(!extension_loaded("java")) require_once("java/Java.inc");


[compiling ]
> 3) Binaries for PHP 5.2.x

Yes, this is possible. PHP 5.2 and all future versions of PHP are supported. IBM has a
tutorial which describes how to compile PHP 5 and PHP 6 on windows. Instructions how to
compile the bridge against PHP 5 or 6 on windows can be found at the end of the INSTALL document.

However, you don't need to compile the C code. It is neither faster nor does it add
additional features[1] except for JVM launching.


Regards,
Jost Boekemeier

[1] This may change in the future, although I'd prefer to add Proxy and ProxyException 
interfaces directly to the PHP core.



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