This topic has not yet been rated - Rate this topic

RM_SEND_WINDOW structure

Applies to: desktop apps only

The RM_SEND_WINDOW structure specifies the Reliable Multicast send window. This structure is used with the RM_RATE_WINDOW_SIZE socket option.

Syntax

Copy

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

Minimum supported client	Windows Vista
Minimum supported server	Windows Server 2003
Header	Wsrm.h

RM_SEND_WINDOW structure

Syntax

Members

Remarks

Requirements

See also