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About RAS Server and Port Administration

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The RAS server administration functions get information about a specified RAS server and its ports. These functions are also used to terminate a connection on a specified RAS server port.

The MprAdminServerGetInfo function returns a MPR_SERVER_0 structure that contains information about the configuration of a RAS server. The returned information includes the number of ports currently available for connections, the number of ports currently in use, and the server version number.

The MprAdminPortEnum function retrieves an array of RAS_PORT_0 structures. Each structure contains information for one of the ports configured on a RAS server. The information for each port includes:

  • The name of the port
  • Information about the device attached to the port
  • Whether the RAS server associated with the port is a Windows NT/Windows 2000 Server
  • Whether the port is currently in use and, if it is, information about the connection

To obtain the ports in use by a specific connection, pass MprAdminPortEnum a handle to that connection in the hConnection parameter. To obtain a handle to a connection, use the MprAdminConnectionEnum function. Alternatively, if you have implemented a RAS Administration DLL, the MprAdminAcceptNewConnection and MprAdminAcceptNewConnection2 functions receive a handle to each new connection at the time the connection is established.

You can call the MprAdminPortGetInfo function to get additional information about a specified port on a RAS server. This function returns a RAS_PORT_1 structure that contains a RAS_PORT_0 structure and additional information about the current state of the port. The RasAdminPortGetInfo function also returns an array of RAS_PARAMETERS structures that describe the values of any media-specific keys associated with the port. A RAS_PARAMETERS structure uses a value from the RAS_PARAMS_FORMAT enumeration to indicate the format of the value for each media-specific key.

The MprAdminPortGetInfo function also returns a RAS_PORT_STATISTICS structure that contains various statistic counters for the current connection, if any, on the port. For a port that is part of a multilink connection, MprAdminPortGetInfo returns statistics for the individual port and cumulative statistics for all ports involved in the connection. You can use the MprAdminPortClearStats function to reset the statistic counters for the port. The MprAdminPortDisconnect function disconnects a port that is in use.

Use the MprAdminBufferFree function to free memory allocated by the MprAdminPortEnum and MprAdminPortGetInfo functions. Use the MprAdminGetErrorString function to get a string that describes a RAS error code returned by one of the RAS server administration (RasAdmin) functions.