TCP_ESTATS_TYPE Enumeration

The TCP_ESTATS_TYPE enumeration defines the type of extended statistics for a TCP connection that is requested or being set.

Syntax

typedef enum  {
  TcpConnectionEstatsSynOpts,
  TcpConnectionEstatsData,
  TcpConnectionEstatsSndCong,
  TcpConnectionEstatsPath,
  TcpConnectionEstatsSendBuff,
  TcpConnectionEstatsRec,
  TcpConnectionEstatsObsRec,
  TcpConnectionEstatsBandwidth,
  TcpConnectionEstatsFineRtt,
  TcpConnectionEstatsMaximum
}  *PTCP_ESTATS_TYPE;

Constants

TcpConnectionEstatsSynOpts This value specifies SYN exchange information for a TCP connection.

Only read-only static information is available for this enumeration value.

TcpConnectionEstatsData This value specifies extended data transfer information for a TCP connection.

Only read-only dynamic information and read/write information are available for this enumeration value.

TcpConnectionEstatsSndCong This value specifies sender congestion for a TCP connection.

All three types of information (read-only static, read-only dynamic, and read/write information) are available for this enumeration value.

TcpConnectionEstatsPath This value specifies extended path measurement information for a TCP connection. This information is used to infer segment reordering on the path from the local sender to the remote receiver.

Only read-only dynamic information and read/write information are available for this enumeration value.

TcpConnectionEstatsSendBuff This value specifies extended output-queuing information for a TCP connection.

Only read-only dynamic information and read/write information are available for this enumeration value.

TcpConnectionEstatsRec This value specifies extended local-receiver information for a TCP connection.

Only read-only dynamic information and read/write information are available for this enumeration value.

TcpConnectionEstatsObsRec This value specifies extended remote-receiver information for a TCP connection.

Only read-only dynamic information and read/write information are available for this enumeration value.

TcpConnectionEstatsBandwidth This value specifies bandwidth estimation statistics for a TCP connection on bandwidth.

Only read-only dynamic information and read/write information are available for this enumeration value.

TcpConnectionEstatsFineRtt This value specifies fine-grained round-trip time (RTT) estimation statistics for a TCP connection.

Only read-only dynamic information and read/write information are available for this enumeration value.

TcpConnectionEstatsMaximum The maximum possible value for the TCP_ESTATS_TYPE_STATE enumeration type. This is not a legal value for the possible type of extended statistics for a TCP connection.

Remarks

The TCP_ESTATS_TYPE enumeration is defined on Windows Vista and later.

The GetPerTcp6ConnectionEStats and GetPerTcp6ConnectionEStats functions are designed to use TCP to diagnose performance problems in both the network and the application. If a network based application is performing poorly, TCP can determine if the bottleneck is in the sender, the receiver or the network itself. If the bottleneck is in the network, TCP can provide specific information about its nature.

The GetPerTcp6ConnectionEStats and GetPerTcp6ConnectionEStats functions are used to retrieve extended statistics for a TCP connection based on the type of extended statistics specified using one of values from the TCP_ESTATS_TYPE enumeration type. The collection of extended statistics on a TCP connection are enabled and disabled using calls to the SetPerTcp6ConnectionEStats and SetPerTcpConnectionEStats functions where the type of extended statistics specified is one of values from the TCP_ESTATS_TYPE enumeration type.

Requirements

   
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Header tcpestats.h

See Also

GetPerTcp6ConnectionEStats

GetPerTcpConnectionEStats

SetPerTcp6ConnectionEStats

SetPerTcpConnectionEStats

TCP_ESTATS_BANDWIDTH_ROD_v0

TCP_ESTATS_BANDWIDTH_RW_v0

TCP_ESTATS_DATA_ROD_v0

TCP_ESTATS_DATA_RW_v0

TCP_ESTATS_FINE_RTT_ROD_v0

TCP_ESTATS_FINE_RTT_RW_v0

TCP_ESTATS_OBS_REC_ROD_v0

TCP_ESTATS_OBS_REC_RW_v0

TCP_ESTATS_PATH_ROD_v0

TCP_ESTATS_PATH_RW_v0

TCP_ESTATS_REC_ROD_v0

TCP_ESTATS_REC_RW_v0

TCP_ESTATS_SEND_BUFF_ROD_v0

TCP_ESTATS_SEND_BUFF_RW_v0

TCP_ESTATS_SND_CONG_ROD_v0

TCP_ESTATS_SND_CONG_ROS_v0

TCP_ESTATS_SND_CONG_RW_v0

TCP_ESTATS_SYN_OPTS_ROS_v0