pubfnnetstring(s:&[u8])->Vec<u8>{// what python does here is a little weird: it stuffs the length,
// as ascii bytes that represent the number, then a colon, then
// arbitrary bytes (usually 32 random-looking ones), then a single
// comma byte
let tag =format!("{}:", s.len());// stuff byte-sequences together; better way?
[tag.as_bytes(), s,b","].concat()}#[test]fntest_netstring(){// Values from allmydata.test.test_netstring
assert_eq!(netstring(b"abc"),b"3:abc,");assert_eq!(netstring(b"\x80"),b"1:\x80,");}