BSSV How to get header data while processing request

Hi,
my webservices do work well but I have the need to access header information.
Inside my published BSSV, either in the public or in the protected method i would like to access header information.
The context itself does not help here.

protected CustSearchOutput custSearchByDC(IContext context, IConnection connection, CustSearchInput vo) throws BusinessServiceException
{
    //perform all work within try block, finally will clean up any connections.
    Try
   {
    //Call start published method, passing context of null
    //will return context object so BSFN or DB operation can be called later.
    //Context will be used to indicate default transaction boundary, as well as access