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feat(tcp): add remote window scaling and SACK support query methods #4

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Merged
fslongjin merged 1 commit into from
Jan 8, 2026
Merged

feat(tcp): add remote window scaling and SACK support query methods #4

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13 changes: 13 additions & 0 deletions src/socket/tcp.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -875,6 +875,19 @@ impl<'a> Socket<'a> {
self.state
}

/// Returns the window scaling factor advertised to the remote.
/// This is the shift value we use when sending window sizes to the peer.
#[inline]
pub fn remote_win_shift(&self) -> u8 {
self.remote_win_shift
}

/// Returns whether the remote endpoint supports Selective ACK (SACK).
#[inline]
pub fn remote_has_sack(&self) -> bool {
self.remote_has_sack
}

fn reset(&mut self) {
let rx_cap_log2 =
mem::size_of::<usize>() * 8 - self.rx_buffer.capacity().leading_zeros() as usize;
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