Bypassing SOA MANAGER , Consume a stateless Webservice and send Zip file

Hello,

I have question around consuming web service via ABAP program.The scenario is consume a operation of a web-service and get the information, based on this information put the data in flat files and send it back in another operation of this web-service. Due to way web-service is implemented I cannot generate proxy class and use SOA manager the reason is web-service is using complex data t

1) Is it possible to consume a web-service via ABAP program directly

I have explored the SAP documentation and came up with this link

Appendix C - SOAP Runtime for the SAP Web AS - SAP Library

Another Link I found was

Manual HTTP POST from ABAP

Using any of the above approaches can  SAP program consume a web-service bypassing the SOA manager & send the zipped files in one of the operations.