Might as well use a buffered writer too.

Author: jonathanpallant

src/slip.rs

@@ -5,7 +5,8 @@ const ESC: u8 = 0xDB;
 const ESC_END: u8 = 0xDC;
 const ESC_ESC: u8 = 0xDD;
 
-pub fn encode_frame(buf: &[u8], mut writer: impl Write) -> io::Result<()> {
+pub fn encode_frame(buf: &[u8], writer: impl Write) -> io::Result<()> {
+    let mut writer = std::io::BufWriter::new(writer);
     for &byte in buf {
         match byte {
             END => writer.write_all(&[ESC, ESC_END])?,
@@ -15,6 +16,7 @@ pub fn encode_frame(buf: &[u8], mut writer: impl Write) -> io::Result<()> {
     }
 
     writer.write_all(&[END])?;
+    writer.flush()?;
 
     Ok(())
 }