LumiSoft Net Help
StartTlsAsync Method (op)
Namespaces ► LumiSoft.Net.SMTP.Client ► SMTP_Client ► StartTlsAsync(SMTP_Client..::..StartTlsAsyncOP)
Starts sending STARTTLS command to SMTP server.
Declaration Syntax

C# | Visual Basic | Visual C++ | F#

    public bool StartTlsAsync(
    	SMTP_Client..::..StartTlsAsyncOP op
    )

    Public Function StartTlsAsync (
    	op As SMTP_Client..::..StartTlsAsyncOP
    ) As Boolean

    public:
    bool StartTlsAsync(
    	SMTP_Client..::..StartTlsAsyncOP^ op
    )

    member StartTlsAsync :
            op : SMTP_Client..::..StartTlsAsyncOP -> bool

Parameters

op (SMTP_Client..::..StartTlsAsyncOP)
  Asynchronous operation.

Return Value
Boolean
Returns true if aynchronous operation is pending (The CompletedAsync event is raised upon completion of the operation). Returns false if operation completed synchronously.
Remarks
After successful STARTTLS all SMTP session data(EHLO,MAIL FROM, ....) will be reset. If unknwon(not SMTP error) error happens during STARTTLS negotiation, SMTP client should disconnect.
Exceptions

Exception | Condition
--- | ---
ObjectDisposedException | Is raised when this object is disposed and and this method is accessed.
InvalidOperationException | Is raised when SMTP client is not connected or connection is already secure.
ArgumentNullException | Is raised when op is null reference.

Assembly: LumiSoft.Net (Module: LumiSoft.Net.dll) Version: 4.5.5510.19119