Check incoming request, and treat it in different ways:
Check incoming request, and treat it in different ways:

- if the request contains no query at all, it is expected to be an
  initializing request coming from, for example, a web browser,
  so send back a simple web form, in which an xquery can be typed.

- if the request contains text beginning with "<?xml", it is expected to be
  a SOAP message.

- if the request contains text beginning with "req_xquery=", it is expected
  to be a normal HTTP request containing an xquery.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb