Fix an edge case reshaping buffer too long

yuhan6665 · yuhan6665 · commit 291061e9da6a · 2023-10-21T03:20:51.000-04:00
diff --git a/proxy/proxy.go b/proxy/proxy.go
@@ -257,7 +257,7 @@ func ReshapeMultiBuffer(ctx context.Context, buffer buf.MultiBuffer) buf.MultiBu
 	for i, buffer1 := range buffer {
 		if buffer1.Len() >= buf.Size-21 {
 			index := int32(bytes.LastIndex(buffer1.Bytes(), TlsApplicationDataStart))
-			if index <= 0 || index > buf.Size-21 {
+			if index < 21 || index > buf.Size-21 {
 				index = buf.Size / 2
 			}
 			buffer2 := buf.New()

Original file line number	Diff line number	Diff line change
`@@ -257,7 +257,7 @@ func ReshapeMultiBuffer(ctx context.Context, buffer buf.MultiBuffer) buf.MultiBu`
`257`	`257`	`for i, buffer1 := range buffer {`
`258`	`258`	`if buffer1.Len() >= buf.Size-21 {`
`259`	`259`	`index := int32(bytes.LastIndex(buffer1.Bytes(), TlsApplicationDataStart))`
`260`		`- if index <= 0 \|\| index > buf.Size-21 {`
	`260`	`+ if index < 21 \|\| index > buf.Size-21 {`
`261`	`261`	`index = buf.Size / 2`
`262`	`262`	`}`
`263`	`263`	`buffer2 := buf.New()`