I am using Hessian Binary Protocol. It works fine when

CASE I:

• Server
• -- Java
• Client
• -- Java
• -- PHP

CASE II:

• Server
• -- PHP
• Client
• -- PHP

But it throws exception

java.io.IOException: Server returned HTTP response code: 500 for URL

when

CASE III:

• Server
• -- PHP
• Client
• -- JAVA

I have googled a lot & found this https://code.google.com/p/hessianphp/issues/detail?id=20

Any help ?

Hessian uses v1 as default. It will give you error in the case you're using. However, HessianProxyFactory can be easily switched to v2 mode, like I demonstrate here in the following sample code:

HessianProxyFactory factory = new HessianProxyFactory();
factory.setHessian2Request(true);
// Do something 

Source: Hessdroid

Hope that will work for you!