SOAPjr

If you're looking for a lightweight SOAP alternative, then you might want to check out SOAPjr. This software offers all the benefits of JSON-RPC, along with more robust error handling and file upload capability.

Here's how it works:

- First, you receive a request message.  
- Next, you validate the request message. 
- Then, you process the request message. 
- After that, you create a response message. 
- Once you're happy with your response message, you configure it with any necessary settings. 
- Finally, you send it back to the requesting party. 

Assuming that you're using a Perl script or Apache request handler, you would take the following steps:

- Use the "use SOAPjr" command to import the software into your script. 
- Create a SOAPjr server object. You might want to create this in the Apache perl_startup.pl script to keep it persistent. 
- Validate the inbound request object for this request. You can do this by passing in a hash reference and %ENV. 
- Process the request, whatever it may be. 
- Now that you've got your content sorted, create your response object. 
- Configure that object with any relevant response values. 
- If there are any errors, add them using the $response->add_error() command. 
- When you're ready, send back the response object using $response->send(). You can also get a serialized string of the object at any time using $response->output().

Overall, SOAPjr is a straightforward and versatile software that can streamline your SOAP-based interactions. Give it a try if you're looking for a lightweight alternative to traditional SOAP.