From: Matt Corallo <git@bluematt.me>
Date: Tue, 6 Feb 2024 17:50:47 +0000 (+0000)
Subject: Correct length calculation when writing TXT records
X-Git-Tag: v0.5.4~91
X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=38b9acc6f550f0e1ead8871d55d0186fcf3a10b4;p=dnssec-prover

Correct length calculation when writing TXT records
---

diff --git a/src/rr.rs b/src/rr.rs
index 3d1a6a8..14826e3 100644
--- a/src/rr.rs
+++ b/src/rr.rs
@@ -189,7 +189,7 @@ impl StaticRecord for Txt {
 		Ok(Txt { name, data: parsed_data })
 	}
 	fn write_u16_len_prefixed_data(&self, out: &mut Vec<u8>) {
-		let len = (self.data.len() + self.data.len() / 255 + 1) as u16;
+		let len = (self.data.len() + (self.data.len() + 254) / 255) as u16;
 		out.extend_from_slice(&len.to_be_bytes());
 
 		let mut data_write = &self.data[..];