int cl = request.getContentLength() ;
if(cl != -1)
ssiVars.put("CONTENT_LENGTH",
String.valueOf(cl)) ;
HeaderValue hval = request.getHeaderValue(Request.H_ACCEPT) ;
if(hval != null)
ssiVars.put("HTTP_ACCEPT",hval.toExternalForm()) ;
safePut(ssiVars,"HTTP_USER_AGENT",
request.getUserAgent()) ;
safePut(ssiVars,"X_LAST_MODIFIED",