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Clarify comment message & MAX_LENGTH const

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This commit is contained in:
Nathan West 2020-05-22 15:59:38 -04:00
parent defbd845a3
commit 06a97a027a
1 changed files with 7 additions and 3 deletions
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10
src/libstd/net/addr.rs
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@ -605,11 +605,14 @@ impl fmt::Display for SocketAddrV4 {
if f.precision().is_none() && f.width().is_none() {
write!(f, "{}:{}", self.ip(), self.port())
} else {
const IPV4_SOCKET_BUF_LEN: usize = 21;
const IPV4_SOCKET_BUF_LEN: usize = (3 * 4) // the segments
+ 3 // the separators
+ 1 + 5; // the port
let mut buf = [0; IPV4_SOCKET_BUF_LEN];
let mut buf_slice = &mut buf[..];
// Unwrap is fine because writing to a buffer is infallible
// Unwrap is fine because writing to a sufficiently-sized
// buffer is infallible
write!(buf_slice, "{}:{}", self.ip(), self.port()).unwrap();
let len = IPV4_SOCKET_BUF_LEN - buf_slice.len();
@ -643,7 +646,8 @@ impl fmt::Display for SocketAddrV6 {
let mut buf = [0; IPV6_SOCKET_BUF_LEN];
let mut buf_slice = &mut buf[..];
// Unwrap is fine because writing to a buffer is infallible
// Unwrap is fine because writing to a sufficiently-sized
// buffer is infallible
write!(buf_slice, "[{}]:{}", self.ip(), self.port()).unwrap();
let len = IPV6_SOCKET_BUF_LEN - buf_slice.len();