Flow control for file transfers

To prevent the MSIF transfer service from passing to an SAG more FileAct requests than it can comfortably handle, you can configure, for each SAG, a transfer window. This window limits the number of such requests for which a response can be outstanding at any one time. If this limit is reached, the MSIF transfer service buffers FileAct requests until the number of requests for which a response is outstanding drops back below the window size, at which time it passes the buffered requests to the SAG. If this option is not set, the window size is unlimited and no requests are buffered.

The transfer window can be configured with option FileWindowSize of type SAG communication options. The option is described in SAG communication options: SagCommOptions.