SendQueue.initialize

void initialize(size_t highWaterMark, size_t preallocatedSize) @trusted nothrow

Prepare the send queue for use.

Call once before any other method. Selects dynamic-array mode when preallocatedSize == 0, ring-buffer mode otherwise.

`highWaterMark`	Per-connection send budget (bytes).
`preallocatedSize`	Ring buffer capacity, or `0` for dynamic mode.