problem integrating icap into asm of F5 14.1

This is application level behaviour within the web application itself - there isn't any configuration in ASM to enable this behaviour.

https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/POST

-----

POST /test HTTP/1.1 
Host: foo.example
Content-Type: multipart/form-data;boundary="boundary" 
 
--boundary 
Content-Disposition: form-data; name="field1" 
 
value1 
--boundary 
Content-Disposition: form-data; name="field2"; filename="example.txt" 
 
value2
--boundary--