make the flow control package internal

internal/flowcontrol/interface.go

@@ -0,0 +1,26 @@
+package flowcontrol
+
+import "github.com/lucas-clemente/quic-go/internal/protocol"
+
+// WindowUpdate provides the data for WindowUpdateFrames.
+type WindowUpdate struct {
+	StreamID protocol.StreamID
+	Offset   protocol.ByteCount
+}
+
+// A FlowControlManager manages the flow control
+type FlowControlManager interface {
+	NewStream(streamID protocol.StreamID, contributesToConnectionFlow bool)
+	RemoveStream(streamID protocol.StreamID)
+	// methods needed for receiving data
+	ResetStream(streamID protocol.StreamID, byteOffset protocol.ByteCount) error
+	UpdateHighestReceived(streamID protocol.StreamID, byteOffset protocol.ByteCount) error
+	AddBytesRead(streamID protocol.StreamID, n protocol.ByteCount) error
+	GetWindowUpdates() []WindowUpdate
+	GetReceiveWindow(streamID protocol.StreamID) (protocol.ByteCount, error)
+	// methods needed for sending data
+	AddBytesSent(streamID protocol.StreamID, n protocol.ByteCount) error
+	SendWindowSize(streamID protocol.StreamID) (protocol.ByteCount, error)
+	RemainingConnectionWindowSize() protocol.ByteCount
+	UpdateWindow(streamID protocol.StreamID, offset protocol.ByteCount) (bool, error)
+}