Update sing-box core, refactor MASQUE, update XHTTP

transport/masque/buffer.go

@@ -1,34 +0,0 @@
-package masque
-
-import "sync"
-
-type NetBuffer struct {
-	capacity uint32
-	buf      sync.Pool
-}
-
-func (n *NetBuffer) Get() []byte {
-	return *n.buf.Get().(*[]byte)
-}
-
-func (n *NetBuffer) Put(buf []byte) {
-	if cap(buf) != int(n.capacity) {
-		return
-	}
-	n.buf.Put(&buf)
-}
-
-func NewNetBuffer(capacity uint32) *NetBuffer {
-	if capacity == 0 {
-		panic("capacity must be greater than 0")
-	}
-	return &NetBuffer{
-		capacity: capacity,
-		buf: sync.Pool{
-			New: func() interface{} {
-				b := make([]byte, capacity)
-				return &b
-			},
-		},
-	}
-}