From 1997bc8a150b92783060cc7129e1ee72a761182b Mon Sep 17 00:00:00 2001
From: Kyren223 <ulmliad223@gmail.com>
Date: Sun, 20 Oct 2024 11:36:43 +0300
Subject: refactor: mid refactor

---
 internal/packet/framer.go | 106 ----------------------------------------------
 1 file changed, 106 deletions(-)
 delete mode 100644 internal/packet/framer.go

(limited to 'internal/packet/framer.go')

diff --git a/internal/packet/framer.go b/internal/packet/framer.go
deleted file mode 100644
index 1a76ea6..0000000
--- a/internal/packet/framer.go
+++ /dev/null
@@ -1,106 +0,0 @@
-package packet
-
-import (
-	"context"
-	"encoding/binary"
-	"errors"
-	"fmt"
-	"io"
-
-	"github.com/kyren223/eko/pkg/assert"
-	"github.com/kyren223/eko/pkg/util"
-)
-
-const framerPacketCapacity = 10
-
-var (
-	PacketUnsupportedVersion  error = errors.New("packet error: unsupported version")
-	PacketUnsupportedEncoding error = errors.New("packet error: unsupported encoding")
-	PacketUnsupportedType     error = errors.New("packet error: unsupported type")
-)
-
-type packetFramer struct {
-	buffer []byte
-	len    uint16
-	in     chan<- Packet
-	inErr  chan<- error
-}
-
-func RunFramer(ctx context.Context, reader io.Reader) (out <-chan Packet, outErr <-chan error) {
-	ch := make(chan Packet, framerPacketCapacity)
-	errCh := make(chan error)
-
-	framer := packetFramer{
-		buffer: make([]byte, PACKET_MAX_SIZE),
-		len:    0,
-		in:     ch,
-		inErr:  errCh,
-	}
-
-	go framer.run(ctx, util.NewChannelReader(ctx, reader))
-
-	return ch, errCh
-}
-
-func (f *packetFramer) run(ctx context.Context, reader util.ChannelReader) {
-	defer close(f.in)
-	defer close(f.inErr)
-
-outer:
-	for {
-		select {
-		case data := <-reader.Out:
-			dataRead := 0
-			for dataRead < len(data) {
-				n := copy(f.buffer[f.len:], data[dataRead:])
-				assert.Assert(0 <= n && n <= int(PACKET_MAX_SIZE), "n must fit in a u16")
-				f.len += uint16(n)
-				dataRead += n
-				if err := f.parse(); err != nil {
-					f.inErr <- err
-					break outer
-				}
-			}
-
-		case err := <-reader.Err:
-			f.inErr <- err
-			break outer
-
-		case <-ctx.Done():
-			f.inErr <- ctx.Err()
-			break outer
-		}
-	}
-}
-
-func (f *packetFramer) parse() error {
-	for f.len > HEADER_SIZE {
-		if f.buffer[VERSION_OFFSET] != VERSION {
-			return fmt.Errorf("%w version=%v", PacketUnsupportedVersion, f.buffer[VERSION_OFFSET])
-		}
-
-		encoding := Encoding(f.buffer[ENCODING_OFFSET] >> 6)
-		packetType := PacketType(f.buffer[TYPE_OFFSET] & 63)
-		if !encoding.IsSupported() {
-			return PacketUnsupportedEncoding
-		}
-		if !packetType.IsSupported() {
-			return PacketUnsupportedType
-		}
-
-		length := binary.BigEndian.Uint16(f.buffer[LENGTH_OFFSET:])
-		if f.len-HEADER_SIZE < length {
-			// Wait for more data to arrive
-			return nil
-		}
-
-		fullLength := HEADER_SIZE + length
-		packetBuffer := make([]byte, fullLength)
-		copy(packetBuffer, f.buffer[:fullLength])
-
-		f.len = uint16(copy(f.buffer, f.buffer[fullLength:f.len]))
-
-		f.in <- Packet{packetBuffer}
-	}
-	return nil
-}
-- 
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