irule reject request when payload field is null

REFERENCE: "HTTP::uri" [https://clouddocs.f5.com/api/irules/HTTP__uri.htm]

The referenced iRules command is probably NOT returning "https://10.10.10.10 ..." but rather "/aaa/v1 ...". So try modifying the check so that it is instead:

if { [HTTP::uri] starts_with "/aaa/v1/xx/test/okokokok" }

and see if that solves the issue.

Hi quangtran , 
try to modify this line : 

if { [HTTP::uri] starts_with "https://10.10.10.10/aaa/v1/xx/test/okokokok" } {

to this line : 

if { [HTTP::uri] starts_with "/aaa" } {

or 

if { [HTTP::uri] contains "/aaa/v1/xx/test/okokokok" } {

I relied on the below article to write it : 
https://clouddocs.f5.com/api/irules/HTTP__uri.html

Hope this helps you