Http net library post body limit?

Hi,

 I am trying to post a JsonArray using HttpRequest, but it seems (not 1000% sure) that I am hitting issues when the size of the text from the JsonArray extends 32K.

 To post it I am using:

oRequest = RequestBuilder:Post(httpUrl, new String(oJsonArray:getJsonText()))
:Request.

 Is this expected behaviour? or maybe I should be posting the body differently?

 Cheers,