/// <summary>
/// Verifies the specified session-id.
/// </summary>
/// <param name="stanza">The original IQ stanza.</param>
/// <param name="sid">The session-id to verify.</param>
/// <returns>true if the specified session-id is valid; Otherwise
/// false.</returns>
private bool VerifySession(Iq stanza, string sid)
{
if (String.IsNullOrEmpty(sid))
{
return(false);
}
var session = siFileTransfer.GetSession(sid, stanza.From, im.Jid);
return(session != null);
}
/// <summary>
/// Processes an IBB 'open' request.
/// </summary>
/// <param name="sessionId">The mandatory session id attribute of the 'open'
/// element.</param>
/// <param name="stanza">The IQ stanza containing the request.</param>
/// <exception cref="ArgumentNullException">The sessionId parameter or the
/// stanza parameter is null.</exception>
/// <exception cref="ArgumentException">The specified session id is not
/// valid, or the initiator requested a data-transfer other than IQ
/// stanzas (i.e. message stanzas).</exception>
private void Open(string sessionId, Iq stanza)
{
sessionId.ThrowIfNull("sessionId");
stanza.ThrowIfNull("stanza");
if (siFileTransfer.GetSession(sessionId, stanza.From, im.Jid) == null)
{
throw new XmppException("Invalid session-id.");
}
string s = stanza.Data["open"].GetAttribute("stanza");
if (!String.IsNullOrEmpty(s) && s != "iq")
{
throw new XmppException("Only IQ stanzas are supported.");
}
}