Access-Control-Allow-Origin

Hi: This is probably an extremely newbie-ish question. I'm developing on localhost using MAMP/PHP at port 8888, and basex at port 8984. So I am running into "Cross-Origin Resource Sharing" issues, apparently, when I have the PHP server issue an XMLHttpRequest to the Basex server. I would have thought that this line in my REST GET function %rest:header-param("Access-Control-Allow-Origin", "http://localhost:8888") in my *.xqm file would have solved the problem. Instead, I'm getting this error: 400 (Stopped at /Users/shunting/basex/webapp/restxq.xqm, 395/14: [bxerr:BASX0003] Invalid path template: "http://localhost:8888".) I'm stymied because I don't see how a URL could match a path template in the first place. Is the "Access-Control-Allow-Origin" not a supported parameter? All I want to do is get my two servers on my machine to talk to each other. If this isn't the right way, is there another one? Thank you! * * * Every communication from this account is off the record, unless explicitly put on the record.

Hi Lambert, Welcome to the list.

With the %rest:header-param annotation, you can bind header parameters from the client request to variables. An example:

  declare
    %rest:path("/example1")
    %rest:header-param("Access-Control-Allow-Origin", "{$origin}")
  function local:example1($origin) {
    "Origin: " || $origin
  };

If you want to create a response with this parameter, you need to build a custom response. In BaseX, you can either use the web:response-header function for this, or add the XML response created by this function instead (see [1] and [2]):

  declare
    %rest:path("/example2")
  function local:example2() {
    web:response-header(
      map {} ,
      map { "Access-Control-Allow-Origin": "http://localhost:8888" }
    ),
    <actual-response/>
  };

Hope this helps, Christian [1] http://docs.basex.org/wiki/Web_Module#web:response-header [2] http://docs.basex.org/wiki/RESTXQ#Custom_Response