Move intermediate

mtproto/wrappers/intermediate.go

@@ -1,90 +0,0 @@
-package wrappers
-
-import (
-	"bytes"
-	"encoding/binary"
-	"io"
-	"net"
-
-	"github.com/juju/errors"
-
-	"github.com/9seconds/mtg/mtproto"
-	"github.com/9seconds/mtg/wrappers"
-)
-
-const intermediateQuickAckLength = 0x80000000
-
-type IntermediateReadWriteCloserWithAddr struct {
-	wrappers.BufferedReader
-
-	conn wrappers.ReadWriteCloserWithAddr
-	opts *mtproto.ConnectionOpts
-}
-
-func (i *IntermediateReadWriteCloserWithAddr) Read(p []byte) (int, error) {
-	return i.BufferedRead(p, func() error {
-		buf := &bytes.Buffer{}
-		buf.Grow(4)
-
-		if _, err := io.CopyN(buf, i.conn, 4); err != nil {
-			return errors.Annotate(err, "Cannot read message length")
-		}
-		length := binary.LittleEndian.Uint32(buf.Bytes())
-		buf.Reset()
-		buf.Grow(int(length))
-
-		if length > intermediateQuickAckLength {
-			i.opts.ReadHacks.QuickAck = true
-			length -= intermediateQuickAckLength
-		}
-
-		if _, err := io.CopyN(buf, i.conn, int64(length)); err != nil {
-			return errors.Annotate(err, "Cannot read the message")
-		}
-
-		if length%4 != 0 {
-			length -= length % 4
-			i.Buffer.Write(buf.Bytes()[:length])
-			return nil
-		}
-
-		i.Buffer.Write(buf.Bytes())
-
-		return nil
-	})
-}
-
-func (i *IntermediateReadWriteCloserWithAddr) Write(p []byte) (int, error) {
-	if i.opts.WriteHacks.SimpleAck {
-		return i.conn.Write(p)
-	}
-
-	var length [4]byte
-	binary.LittleEndian.PutUint32(length[:], uint32(len(p)))
-
-	return i.conn.Write(append(length[:], p...))
-}
-
-func (i *IntermediateReadWriteCloserWithAddr) Close() error {
-	return i.conn.Close()
-}
-
-func (i *IntermediateReadWriteCloserWithAddr) LocalAddr() *net.TCPAddr {
-	return i.conn.LocalAddr()
-}
-
-func (i *IntermediateReadWriteCloserWithAddr) RemoteAddr() *net.TCPAddr {
-	return i.conn.RemoteAddr()
-}
-
-func (i *IntermediateReadWriteCloserWithAddr) SocketID() string {
-	return i.conn.SocketID()
-}
-
-func NewIntermediateRWC(conn wrappers.ReadWriteCloserWithAddr, connOpts *mtproto.ConnectionOpts) wrappers.ReadWriteCloserWithAddr {
-	return &IntermediateReadWriteCloserWithAddr{
-		BufferedReader: wrappers.NewBufferedReader(),
-		conn:           conn,
-		opts:           connOpts,
-	}
-}