RM_SEND_WINDOW structure (wsrm.h)
The RM_SEND_WINDOW structure specifies the Reliable Multicast send window. This structure is used with the RM_RATE_WINDOW_SIZE socket option.
Syntax
typedef struct _RM_SEND_WINDOW {
ULONG RateKbitsPerSec;
ULONG WindowSizeInMSecs;
ULONG WindowSizeInBytes;
} RM_SEND_WINDOW;
Members
RateKbitsPerSec
Transmission rate for the send window, in kilobits per second.
WindowSizeInMSecs
Window size for the send window, in milliseconds.
WindowSizeInBytes
Window size for the session, in bytes.
Remarks
Any combination of the three available members may be set for a given socket option call. For example, one, any two, or all three members may be specified during a setsockopt function call. Regardless of settings, Windows enforces the following ratio: TransmissionRate == (WindowSizeBytes/WindowSizeMSecs) * 8. As such, setting any two parameters effectively sets the third to ensure optimum performance.
The combination of these members can affect the resources used on a PGM sender's computer. For example, a large transmission rate value combined with a large window size results in more required buffer space.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Header | wsrm.h |