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Don't send client CONNECTION_CLOSE on 1-RTT before handshake completion. #4145

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merged 3 commits into from
Feb 23, 2024
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Don't send client CONNECTION_CLOSE on 1-RTT before handshake completion. #4145

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83733f0
Don't send client CONNECTION_CLOSE on 1-RTT before handshake completion.
rzikm Feb 16, 2024
3ef1931
Fix tests
rzikm Feb 20, 2024
de3f2ef
Remove unwanted changes
rzikm Feb 20, 2024
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18 changes: 16 additions & 2 deletions src/core/packet_builder.c
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Original file line number Diff line number Diff line change
Expand Up @@ -479,8 +479,22 @@ QuicPacketBuilderGetPacketTypeAndKeyForControlFrames(
CXPLAT_DBG_ASSERT(SendFlags != 0);
QuicSendValidate(&Builder->Connection->Send);

QUIC_PACKET_KEY_TYPE MaxKeyType = Connection->Crypto.TlsState.WriteKey;

if (QuicConnIsClient(Connection) &&
!Connection->State.HandshakeConfirmed &&
MaxKeyType == QUIC_PACKET_KEY_1_RTT &&
(SendFlags & QUIC_CONN_SEND_FLAG_CONNECTION_CLOSE)) {
//
// Server is not allowed to process 1-RTT packets until the handshake is confirmed and since we are
// closing the connection, the handshake is unlikely to complete. Ensure the CONNECTION_CLOSE is sent
// in a packet which server can process.
//
MaxKeyType = QUIC_PACKET_KEY_HANDSHAKE;
}

for (QUIC_PACKET_KEY_TYPE KeyType = 0;
KeyType <= Connection->Crypto.TlsState.WriteKey;
KeyType <= MaxKeyType;
++KeyType) {

if (KeyType == QUIC_PACKET_KEY_0_RTT) {
Expand Down Expand Up @@ -538,7 +552,7 @@ QuicPacketBuilderGetPacketTypeAndKeyForControlFrames(
if (Connection->Crypto.TlsState.WriteKey == QUIC_PACKET_KEY_0_RTT) {
*PacketKeyType = QUIC_PACKET_KEY_INITIAL;
} else {
*PacketKeyType = Connection->Crypto.TlsState.WriteKey;
*PacketKeyType = MaxKeyType;
}
return TRUE;
}
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25 changes: 11 additions & 14 deletions src/test/lib/HandshakeTest.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -885,13 +885,11 @@ QuicTestCustomServerCertificateValidation(
}
TEST_EQUAL(AcceptCert, Client.GetIsConnected());

if (AcceptCert) { // Server will be deleted on reject case, so can't validate.
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@rzikm rzikm Feb 20, 2024 •
edited
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I don't see how the server would get deleted. The new connection instance is held by the unique_ptr above and neither the AutoDelete bit nor ShutdownEventCallback is set, so the connection should be valid until the unique_ptr goes out of scope.

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I believe this was meant to handle a case where the listener could reject the connection, and then this pointer would never be set. That being said, I cannot see a path where that would happen in this test case (or the one below). And since the tests seem to pass just fine, I'm ok with these changes.

TEST_NOT_EQUAL(nullptr, Server);
if (!Server->WaitForConnectionComplete()) {
return;
}
TEST_TRUE(Server->GetIsConnected());
TEST_NOT_EQUAL(nullptr, Server);
if (!Server->WaitForConnectionComplete()) {
return;
}
TEST_EQUAL(AcceptCert, Server->GetIsConnected());
}
}
}
Expand Down Expand Up @@ -998,16 +996,15 @@ QuicTestCustomClientCertificateValidation(
if (!Client.WaitForConnectionComplete()) {
return;
}

if (AcceptCert) { // Server will be deleted on reject case, so can't validate.
TEST_NOT_EQUAL(nullptr, Server);
if (!Server->WaitForConnectionComplete()) {
return;
}
TEST_TRUE(Server->GetIsConnected());
}
// In all cases, the client "connects", but in the rejection case, it gets disconnected.
TEST_TRUE(Client.GetIsConnected());

TEST_NOT_EQUAL(nullptr, Server);
if (!Server->WaitForConnectionComplete()) {
return;
}

TEST_EQUAL(AcceptCert, Server->GetIsConnected());
}
}
}
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