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Fix condition for acceptable RST|ACK in TCP SYN-SENT state.

This commit is contained in:
whitequark 2017-03-05 05:31:12 +00:00
parent cc67e1f753
commit 0836bc949a
1 changed files with 2 additions and 2 deletions
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4
src/socket/tcp.rs
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@ -674,7 +674,7 @@ impl<'a> TcpSocket<'a> {
(State::SynSent, TcpRepr {
control: TcpControl::Rst, ack_number: Some(ack_number), ..
}) => {
if ack_number != self.local_seq_no {
if ack_number != self.local_seq_no + 1 {
net_trace!("[{}]{}:{}: unacceptable RST|ACK in response to initial SYN",
self.debug_id, self.local_endpoint, self.remote_endpoint);
return Err(Error::Malformed)
@ -1501,7 +1501,7 @@ mod test {
send!(s, TcpRepr {
control: TcpControl::Rst,
seq_number: REMOTE_SEQ,
ack_number: Some(LOCAL_SEQ),
ack_number: Some(LOCAL_SEQ + 1),
..SEND_TEMPL
});
assert_eq!(s.state, State::Closed);