skipLen
	skipCap
)

// assign does left = right.
// Right has already been evaluated to ssa, left has not.
// If deref is true, then we do left = *right instead (and right has already been nil-checked).
// If deref is true and right == nil, just do left = 0.
// skip indicates assignments (at the top level) that can be avoided.
// mayOverlap indicates whether left&right might partially overlap in memory. Default is false.

	// a closed stream." Our server never sends PRIORITY, so that exception
	// does not apply.
	//
	// The serverConn might close an open stream while the stream's handler
	// is still running. For example, the server might close a stream when it
	// receives bad data from the client. If this happens, the handler might
	// attempt to write a frame after the stream has been closed (since the