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Kernet/Net: Close a TCP connection using FIN|ACK instead of just FIN
When initiating a connection termination, the FIN should be sent with a ACK from the last received segment even if that ACK already been sent.
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sideshowbarker
2024-07-17 11:33:34 +09:00
Author: https://github.com/pdelagrave 🔰 Commit: https://github.com/SerenityOS/serenity/commit/55faff80df Pull-request: https://github.com/SerenityOS/serenity/pull/19698
1 changed files with 1 additions and 1 deletions
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@ -534,7 +534,7 @@ void TCPSocket::shut_down_for_writing()
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{
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if (state() == State::Established) {
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dbgln_if(TCP_SOCKET_DEBUG, " Sending FIN from Established and moving into FinWait1");
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(void)send_tcp_packet(TCPFlags::FIN);
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(void)send_tcp_packet(TCPFlags::FIN | TCPFlags::ACK);
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set_state(State::FinWait1);
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} else {
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dbgln(" Shutting down TCPSocket for writing but not moving to FinWait1 since state is {}", to_string(state()));
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