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Kernel: Properly ack segment

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Fixed a mistake where we did not acknowledge a segment in the FinWait2
state.
This commit is contained in:
Jared 2024-01-07 12:12:52 -05:00 committed by Andrew Kaster
parent 87e00565f1
commit dd53f64d2f
Notes: sideshowbarker 2024-07-17 01:13:25 +09:00 
Author: https://github.com/j-barnak
Commit: https://github.com/SerenityOS/serenity/commit/dd53f64d2f
Pull-request: https://github.com/SerenityOS/serenity/pull/22646
1 changed files with 2 additions and 2 deletions
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4
Kernel/Net/NetworkTask.cpp
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@ -615,8 +615,8 @@ void handle_tcp(IPv4Packet const& ipv4_packet, UnixDateTime const& packet_timest
return;
case TCPFlags::ACK:
if (payload_size) {
if (socket->did_receive(ipv4_packet.source(), tcp_packet.source_port(), { &ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size() + 1 }, packet_timestamp)) {
socket->set_ack_number(tcp_packet.sequence_number() + payload_size);
if (socket->did_receive(ipv4_packet.source(), tcp_packet.source_port(), { &ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size() }, packet_timestamp)) {
socket->set_ack_number(tcp_packet.sequence_number() + payload_size + 1);
dbgln_if(TCP_DEBUG, "Got packet with ack_no={}, seq_no={}, payload_size={}, acking it with new ack_no={}, seq_no={}",
tcp_packet.ack_number(), tcp_packet.sequence_number(), payload_size, socket->ack_number(), socket->sequence_number());
send_delayed_tcp_ack(*socket);