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MIB_UDPROW_OWNER_PID (Compact 7)

  • Article

3/12/2014

This structure contains an entry from the User Datagram Protocol (UDP) listener table for IPv4 on the local device. The entry also includes the process ID (PID) that issued the call to the bind function for the UDP endpoint.

Syntax

typedef struct _MIB_UDPROW_OWNER_PID {
  DWORD dwLocalAddr;
  DWORD dwLocalPort;
  DWORD dwOwningPid;
} MIB_UDPROW_OWNER_PID,
  *PMIB_UDPROW_OWNER_PID;

Members

  • dwLocalAddr
    The IPv4 address of the UDP endpoint on the local device.

    A value of zero indicates a UDP listener willing to accept datagrams for any IP interface associated with the local device.

  • dwLocalPort
    The port number of the UDP endpoint on the local device. This member is stored in network byte order.
  • dwOwningPid
    The PID of the process that issued the call to the bind function for the UDP endpoint. This member is set to 0 when the PID is unavailable.

Remarks

The MIB_UDPTABLE_OWNER_PID structure is returned by a call to GetExtendedUdpTable with the TableClass parameter set to UDP_TABLE_OWNER_PID and the ulAf parameter set to AF_INET. The MIB_UDPTABLE_OWNER_PID structure contains an array of MIB_UDPROW_OWNER_PID structures.

The dwLocalAddr member is stored as a DWORD in the same format as the in_addr structure. In order to use the dwLocalAddr member, the ntohl or inet_ntoa functions in Windows Sockets or similar functions might be needed.

The dwLocalPort member is in network byte order. In order to use the dwLocalPort member, the ntohs or inet_ntoa functions in Windows Sockets or similar functions might be needed.

The MIB_UDPTABLE_OWNER_PID structure contains the UDP listener table for IPv4 on the local device. The name is based on the definition of this table in RFC 1213 published by the IETF. This table contains UDP endpoints for IPv4 that have been bound to an address. Be aware that an application can create a UDP socket and bind it to an address for the sole purpose of sending a UDP datagram, without an intention of receiving packets by using this socket (functioning as a listener).

The header file organization has changed. This structure is defined in the Udpmib.h header file instead of in the Iprtrmib.h header file. Be aware that the Udpmib.h header file is automatically included in Iprtrmib.h. This is automatically included in the Iphlpapi.h header file. The Udpmib.h and Iprtrmib.h header files should never be used directly.

Requirements

Header

ws2def.h,
ws2ipdef.h

See Also

Reference

MIB Structures
GetExtendedUdpTable
GetUdp6Table
GetUdpTable
in_addr
inet_ntoa
MIB_UDP6ROW_OWNER_PID
MIB_UDP6TABLE_OWNER_PID
MIB_UDPTABLE_OWNER_PID
ntohl
ntohs
RtlIpv4AddressToString
RtlIpv4AddressToStringEx