Fix truncate message

nekohasekai · nekohasekai · commit 0649aa560691 · 2025-03-29T17:39:01.000+08:00
diff --git a/client_truncate.go b/client_truncate.go
@@ -15,6 +15,8 @@ func TruncateDNSMessage(request *dns.Msg, response *dns.Msg, headroom int) (*buf
 	}
 	responseLen := response.Len()
 	if responseLen > maxLen {
+		responseCopy := *response
+		response = &responseCopy
 		response.Truncate(maxLen)
 	}
 	buffer := buf.NewSize(headroom*2 + 1 + responseLen)

Original file line number	Diff line number	Diff line change
`@@ -15,6 +15,8 @@ func TruncateDNSMessage(request dns.Msg, response dns.Msg, headroom int) (*buf`
`15`	`15`	`}`
`16`	`16`	`responseLen := response.Len()`
`17`	`17`	`if responseLen > maxLen {`
	`18`	`+ responseCopy := *response`
	`19`	`+ response = &responseCopy`
`18`	`20`	`response.Truncate(maxLen)`
`19`	`21`	`}`
`20`	`22`	`buffer := buf.NewSize(headroom*2 + 1 + responseLen)`