XHTTP: Fix packet up writer

common/buf/buffer.go

@@ -13,6 +13,8 @@ const (
 	Size = 8192
 )
 
+var ErrBufferFull = errors.New("buffer is full")
+
 var zero = [Size * 10]byte{0}
 
 var pool = bytespool.GetPool(Size)
@@ -258,13 +260,16 @@ func (b *Buffer) IsFull() bool {
 func (b *Buffer) Write(data []byte) (int, error) {
 	nBytes := copy(b.v[b.end:], data)
 	b.end += int32(nBytes)
+	if nBytes < len(data) {
+		return nBytes, ErrBufferFull
+	}
 	return nBytes, nil
 }
 
 // WriteByte writes a single byte into the buffer.
 func (b *Buffer) WriteByte(v byte) error {
 	if b.IsFull() {
-		return errors.New("buffer full")
+		return ErrBufferFull
 	}
 	b.v[b.end] = v
 	b.end++

transport/internet/splithttp/dialer.go

@@ -489,15 +489,17 @@ func (w uploadWriter) Write(b []byte) (int, error) {
 		}
 	*/
 
-	buffer := buf.New()
+	buffer := buf.MultiBufferContainer{}
 	n, err := buffer.Write(b)
 	if err != nil {
 		return 0, err
 	}
 
-	err = w.WriteMultiBuffer([]*buf.Buffer{buffer})
+	for _, buff := range buffer.MultiBuffer {
-	if err != nil {
+		err := w.WriteMultiBuffer(buf.MultiBuffer{buff})
-		return 0, err
+		if err != nil {
+			return 0, err
+		}
 	}
 	return n, nil
 }