/// <summary>
/// Calls SlpFindSrvs and executes cb for every result found.
/// </summary>
/// <param name="serviceType">
/// A <see cref="System.String"/>
/// </param>
/// <param name="scopes">
/// A <see cref="System.String[]"/>
/// </param>
/// <param name="cb">
/// A <see cref="ServerFoundCallback"/>
/// </param>
public void Find(string serviceType, string[] scopes, ServerFoundCallback cb)
{
var scopelist = String.Empty;
var collatedServices = new HashSet <string>();
if (serviceType == null)
{
throw new ArgumentNullException("serviceType");
}
if (serviceType.Equals(string.Empty))
{
throw new SlpException(SlpError.TYPE_ERROR);
}
if (scopes != null)
{
scopelist = String.Join(",", scopes);
}
if (wait != null)
{
throw new SlpException(SlpError.HANDLE_IN_USE);
}
wait = new AutoResetEvent(false);
var err = SlpNativeMethods.FindSrvs(hSlp, serviceType, scopelist, String.Empty,
delegate(SlpHandle h, string url, UInt16 lifetime, SlpError errcode, IntPtr cookie) {
if (errcode == SlpError.OK)
{
if (!collatedServices.Contains(url))
{
collatedServices.Add(url);
if (cb != null)
{
cb(url, lifetime);
}
}
}
if (errcode == SlpError.LAST_CALL)
{
wait.Set();
return(SlpBoolean.False);
}
return(SlpBoolean.True);
}, IntPtr.Zero);
if (err != SlpError.OK)
{
throw new SlpException(err);
}
wait.WaitOne();
wait = null;
}
/// <summary>
/// Calls SlpFindSrvs and executes cb for every result found.
/// </summary>
/// <param name="serviceType">
/// A <see cref="System.String"/>
/// </param>
/// <param name="scopes">
/// A <see cref="System.String[]"/>
/// </param>
/// <param name="cb">
/// A <see cref="ServerFoundCallback"/>
/// </param>
public void Find(string serviceType, string[] scopes, ServerFoundCallback cb)
{
var scopelist = String.Empty;
var collatedServices = new HashSet<string>();
if (serviceType == null)
throw new ArgumentNullException ("serviceType");
if (serviceType.Equals (string.Empty))
throw new SlpException ( SlpError.TYPE_ERROR );
if (scopes != null)
scopelist = String.Join (",", scopes);
if (wait != null) throw new SlpException(SlpError.HANDLE_IN_USE);
wait = new AutoResetEvent(false);
var err = SlpNativeMethods.FindSrvs (hSlp, serviceType, scopelist, String.Empty,
delegate ( SlpHandle h, string url, UInt16 lifetime, SlpError errcode, IntPtr cookie ) {
if ( errcode == SlpError.OK ){
if ( !collatedServices.Contains(url) ){
collatedServices.Add(url);
if (cb != null) cb(url, lifetime);
}
}
if (errcode == SlpError.LAST_CALL)
{
wait.Set();
return SlpBoolean.False;
}
return SlpBoolean.True;
}, IntPtr.Zero);
if (err != SlpError.OK)
throw new SlpException ( err );
wait.WaitOne();
wait = null;
}
