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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| No
| Win32s
| No
| Import Library
| -
| Header File
| winnetwk.h
| Unicode
| No
| Platform Notes
| None
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NETCONNECTINFOSTRUCT
The NETCONNECTINFOSTRUCT structure contains information about the expected performance of a connection
used to access a network resource. In the dwSpeed, dwDelay or dwOptDataSize members, a value of zero means that no information is available. In the dwSpeed or dwDelay member, a value of one means that the actual value is greater than can be
represented in the unit.
typedef struct _NETCONNECTINFOSTRUCT{
DWORD cbStructure;
DWORD dwFlags;
DWORD dwSpeed;
DWORD dwDelay;
DWORD dwOptDataSize;
} NETCONNECTINFOSTRUCT, *LPNETCONNECTINFOSTRUCT;
Members
cbStructure
The size, in bytes, of the NETCONNECTINFOSTRUCT structure. This value is supplied by the caller to indicate the size of the
structure.
dwFlags
A bit mask. This member can be one or more of the following flags.
Value
| Meaning
| WNCON_FORNETCARD
| If this flag is set, information is being returned for the performance of the
network card, in the absence of information about the actual connection. If
this flag is not set, information is being returned for the current connection
with the resource, with any routing degradation taken into consideration.
| WNCON_NOTROUTED
| If set, the connection is not being routed. If the flag is not set, the
connection may be going through routers that limit performance. Consequently, if
WNCON_FORNETCARD is set, actual performance may be much less than the information
returned.
| WNCON_SLOWLINK
| If the flag is set, the connection is over a medium that is typically slow
(for example, over a modem using a normal quality phone line).
| WNCON_DYNAMIC
| If the flag is set, some of the information being returned is dynamically
recalculated, so reissuing this request may return different or more current
information.
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dwSpeed
The speed of the media to the network resource in units of 100 bits per second
(bps) For example, a 1200 baud point-to-point link returns 12.
dwDelay
The one-way delay introduced by the network when sending information (that is,
the time between when data starts being sent and the time that it starts being
received), in milliseconds. This delay is additional to any latency that was
incorporated into the calculation of dwSpeed, so the value returned will be zero for accessing most resources.
dwOptDataSize
A recommendation for the size of data, in bytes, that is most efficiently sent
through the network when an application makes a single request to the network
resource. For example, for a disk network resource, this value might be 2048 or
512 when writing a block of data
See Also
MultinetGetConnectionPerformance, NetUserAdd
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