Hello,
When I try invoke following code: return ( web:response-header( map { 'media-type': web:content-type($path) }, map { 'Cache-Control': 'max-age=3600,public' }, map { 'Set-Cookie': 'JSESSIONID=' || session:id() || ';max-age=1800' } ), file:read-binary($path) } I receive error: [XPTY0004] Unknown option 'Set-Cookie'. I am able to set cookie using <rest:response>. Following code is working: return ( <rest:response> <http:response status="200" message="OK"> <http:header name="media-type" value="{web:content-type($path)}"/> <http:header name="Content-Type" value="text/html"/> <http:header name="Cache-Control" value="max-age=3600,public"/> <http:header name="Set-Cookie" value="{'JSESSIONID=' || session:id() || ';max-age=1800'}"/> </http:response> </rest:response>, file:read-binary($path) ) I think function web:response-header should allow set cookie. Regards Bogdan Bogucki