RASCONNSTATE enumeration
The RASCONNSTATE enumeration type contains values that specify the states that can occur during a RAS connection operation. If the RasDial function is used to establish a RAS connection, specify a window, or a RasDialFunc, RasDialFunc1, or RasDialFunc2 callback function to receive notification messages that report the current connection state. Also, use the RasGetConnectStatus function to get the connection state for a specified connection.
Syntax
typedef enum _RASCONNSTATE {
RASCS_OpenPort,
RASCS_PortOpened,
RASCS_ConnectDevice,
RASCS_DeviceConnected,
RASCS_AllDevicesConnected,
RASCS_Authenticate,
RASCS_AuthNotify,
RASCS_AuthRetry,
RASCS_AuthCallback,
RASCS_AuthChangePassword,
RASCS_AuthProject,
RASCS_AuthLinkSpeed,
RASCS_AuthAck,
RASCS_ReAuthenticate,
RASCS_Authenticated,
RASCS_PrepareForCallback,
RASCS_WaitForModemReset,
RASCS_WaitForCallback,
RASCS_Projected,
RASCS_SubEntryConnected,
RASCS_SubEntryDisconnected,
RASCS_ApplySettings,
RASCS_Interactive = RASCS_PAUSED,
RASCS_RetryAuthentication,
RASCS_CallbackSetByCaller,
RASCS_PasswordExpired,
RASCS_InvokeEapUI,
RASCS_Connected = RASCS_DONE,
RASCS_Disconnected
} RASCONNSTATE;
Constants
RASCS_OpenPort
The communication port is about to be opened.RASCS_PortOpened
The communication port has been opened successfully.RASCS_ConnectDevice
A device is about to be connected. RasGetConnectStatus can be called to determine the name and type of the device being connected.RASCS_DeviceConnected
A device has connected successfully. RasGetConnectStatus can be called to determine the name and type of the device being connected.For a simple modem connection, RASCS_ConnectDevice and RASCS_DeviceConnected is called only once. For a dial-up X.25 PAD connection, the pair is called first for the modem, then for the PAD. If a preconnect switch is configured, the pair will be called for the switch before any other devices connect. Likewise, the pair is called for a postconnect switch after any other devices connect.
RASCS_AllDevicesConnected
All devices in the device chain have successfully connected. At this point, the physical link is established.RASCS_Authenticate
The authentication process is starting. Remote access does not allow the remote client to generate any traffic on the LAN until authentication has been successfully completed.Remote access authentication consists of:
- Validating the user name/password on the specified domain.
- Projecting the client onto the LAN. This means that the remote access server does what is necessary to send and receive data on the LAN on behalf of the client. For example, the remote access server might need to add a NetBIOS name that corresponds to the client's computer name.
- Call-back processing in which the client hangs up and the server calls back. (The user needs special permissions on the remote access server for this.)
- Calculating the link speed. This is necessary to correctly set transport time-outs to match the relatively slow speed of the remote link.
RASCS_AuthNotify
An authentication event has occurred. If dwError is zero, this event will be immediately followed by one of the more specific authentication states following. If dwError is nonzero, authentication has failed, and the error value indicates why.RASCS_AuthRetry
The client has requested another validation attempt with a new user name/password/domain.RASCS_AuthCallback
The remote access server has requested a callback number. This occurs only if the user has "Set By Caller" callback privilege on the server.RASCS_AuthChangePassword
The client has requested to change the password on the account.RASCS_AuthProject
The projection phase is starting.RASCS_AuthLinkSpeed
The link-speed calculation phase is starting.RASCS_AuthAck
An authentication request is being acknowledged.RASCS_ReAuthenticate
Reauthentication (after callback) is starting.RASCS_Authenticated
The client has successfully completed authentication.RASCS_PrepareForCallback
The line is about to disconnect in preparation for callback.RASCS_WaitForModemReset
The client is delaying in order to give the modem time to reset itself in preparation for callback.RASCS_WaitForCallback
The client is waiting for an incoming call from the remote access server.RASCS_Projected
This state occurs after the RASCS_AuthProject state. It indicates that projection result information is available. Access the projection result information by calling RasGetProjectionInfo.RASCS_SubEntryConnected
When dialing a multilink phone-book entry, this state indicates that a subentry has been connected during the dialing process. The dwSubEntry parameter of a RasDialFunc2 callback function indicates the index of the subentry. When the final state of all subentries in the phone-book entry has been determined, the connection state is RASCS_Connected if one or more subentries have been connected successfully.RASCS_SubEntryDisconnected
When dialing a multilink phone-book entry, this state indicates that a subentry has been disconnected during the dialing process. The dwSubEntry parameter of a RasDialFunc2 callback function indicates the index of the subentry.RASCS_ApplySettings
When dialing a multilink phone-book entry, this state occurs just before a connection goes to the RASCS_SubEntryConnected state.Note Supported in Windows 7 and later versions of Windows.
RASCS_Interactive
This state has a value of RASCS_PAUSED and corresponds to the terminal state supported by RASPHONE.EXE.RASCS_RetryAuthentication
This state corresponds to the retry authentication state supported by RASPHONE.EXE.RASCS_CallbackSetByCaller
This state corresponds to the callback state supported by RASPHONE.EXE.RASCS_PasswordExpired
This state corresponds to the change password state supported by RASPHONE.EXE.RASCS_InvokeEapUI
An application can use this paused state to bring up a custom authentication UI. The application should call the RasInvokeEapUI function to invoke the custom UI. RASCS_InvokeEapUI is a paused state.RASCS_Connected
This state has a value of RASCS_DONE and corresponds to a successful connection.RASCS_Disconnected
This state indicates a disconnected or failed connection.
Remarks
The connection process states are divided into three classes: running states, paused states, and terminal states.
An application can easily determine the class of a specific state by performing Boolean bit operations with the RASCS_PAUSED and RASCS_DONE bitmasks. Here are some examples:
fDoneState = (state & RASCS_DONE);
fPausedState = (state & RASCS_PAUSED);
fRunState = !(fDoneState || fPausedState);
Requirements
Minimum supported client |
Windows 2000 Professional [desktop apps only] |
Minimum supported server |
Windows 2000 Server [desktop apps only] |
Header |
Ras.h |
See also
Remote Access Service (RAS) Overview