/**
* Caches the request body, if not done yet.
*
* @param http http context
* @param cache cache existing cache reference
* @return cache
* @throws IOException I/O exception
*/
private static IOContent cache(final HTTPContext http, final IOContent cache) throws IOException {
if (cache != null) return cache;
final BufferInput bi = new BufferInput(http.req.getInputStream());
final IOContent io = new IOContent(bi.content());
io.name(http.method + IO.XMLSUFFIX);
return io;
}
