MIB_TCPSTATS (Windows Embedded CE 6.0)

1/6/2010

This structure contains statistics for the TCP protocol running on the local computer.

Syntax

typedef struct _MIB_TCPSTATS {
  DWORD dwRtoAlgorithm; 
  DWORD dwRtoMin; 
  DWORD dwRtoMax; 
  DWORD dwMaxConn; 
  DWORD dwActiveOpens; 
  DWORD dwPassiveOpens; 
  DWORD dwAttemptFails; 
  DWORD dwEstabResets; 
  DWORD dwCurrEstab; 
  DWORD dwInSegs; 
  DWORD dwOutSegs; 
  DWORD dwRetransSegs; 
  DWORD dwInErrs; 
  DWORD dwOutRsts; 
  DWORD dwNumConns; 
} MIB_TCPSTATS, *PMIB_TCPSTATS;

Members

• dwRtoAlgorithm
  The retransmission time-out algorithm in use. The following table shows the possible values. This member can be one of these values.

  Value	Description
  MIB_TCP_RTO_CONSTANT	Constant Time-out
  MIB_TCP_RTO_RSRE	MIL-STD-1778 Appendix B
  MIB_TCP_RTO_VANJ	Van Jacobson's Algorithm
  MIB_TCP_RTO_OTHER	Other

• dwRtoMin
  The minimum retransmission time-out value in milliseconds.

• dwRtoMax
  The maximum retransmission time-out value in milliseconds.

• dwMaxConn
  The maximum number of connections. If this member is -1, the maximum number of connections is dynamic.

• dwActiveOpens
  The number of active opens. In an active open, the client is initiating a connection with the server.

• dwPassiveOpens
  The number of passive opens. In a passive open, the server is listening for a connection request from a client.

• dwAttemptFails
  The number of failed connection attempts.

• dwEstabResets
  The number of established connections that have been reset.

• dwCurrEstab
  The number of currently established connections.

• dwInSegs
  The number of segments received or transmitted.

• dwOutSegs
  The number of segments transmitted. This number does not include retransmitted segments.

• dwRetransSegs
  The number of segments retransmitted.

• dwInErrs
  The number of errors received.

• dwOutRsts
  The number of segments transmitted with the reset flag set.

• dwNumConns
  The cumulative number of connections.

Requirements

See Also

Reference

IP Helper Structures
GetTcpStatistics