test: cover testNetSession
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@@ -153,3 +153,160 @@ VF_TEST(aPlayPacketArrivingBeforeLoginEndsTheSessionWithAReasonInsteadOfCrashing
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TransportConfig transportConfig;
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Pair pair(quality, transportConfig, quietConfig());
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// A well-formed PlayerState sent straight at a server still in handshake.
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PlayerState early;
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early.x = 12.0f;
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early.y = 40.0f;
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early.z = -3.0f;
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early.health = 20.0f;
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PacketWriter body;
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early.encode(body);
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ByteWriter stream;
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writeFramed(stream, PacketId::PlayerState, body);
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pair.clientTransport.sendReliable(stream.bytes());
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for (uint64_t tick = 0; tick < 10; ++tick) pair.step(tick);
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CHECK(pair.server.phase() == SessionPhase::Disconnected);
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CHECK(pair.server.disconnectReason() == "packet out of phase");
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CHECK_EQ(pair.server.stats().packetsRejected, static_cast<uint64_t>(1));
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CHECK(!pair.server.timedOut());
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CHECK_EQ(pair.server.view().position.x, 0.0f);
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}
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VF_TEST(aJoinGameArrivingAfterTheClientIsAlreadyPlayingIsRejected) {
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LinkQuality quality;
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quality.latencyTicks = 1;
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TransportConfig transportConfig;
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Pair pair(quality, transportConfig, quietConfig());
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pair.client.beginHandshake("vulp", 1, 2);
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for (uint64_t tick = 0; tick < 10; ++tick) pair.step(tick);
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CHECK(pair.client.phase() == SessionPhase::Play);
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JoinGame again;
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again.entityId = 99;
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again.levelType = "default";
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PacketWriter body;
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again.encode(body);
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ByteWriter stream;
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writeFramed(stream, PacketId::JoinGame, body);
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pair.serverTransport.sendReliable(stream.bytes());
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for (uint64_t tick = 10; tick < 20; ++tick) pair.step(tick);
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CHECK(pair.client.phase() == SessionPhase::Disconnected);
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CHECK(pair.client.disconnectReason() == "packet out of phase");
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CHECK_EQ(pair.client.entityId(), 7);
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}
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VF_TEST(theServerDisconnectsAClientThatStopsAnsweringKeepAlive) {
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LinkQuality quality;
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quality.latencyTicks = 1;
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TransportConfig transportConfig;
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SessionConfig config = quietConfig();
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config.keepAliveIntervalTicks = 5;
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config.keepAliveTimeoutTicks = 30;
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Pair pair(quality, transportConfig, config);
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pair.client.beginHandshake("vulp", 1, 2);
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for (uint64_t tick = 0; tick < 60; ++tick) pair.step(tick);
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CHECK(pair.server.phase() == SessionPhase::Play);
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CHECK(pair.server.stats().keepAlivesSent > 5u);
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CHECK(!pair.server.timedOut());
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// The client goes silent: the server keeps ticking on its own.
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for (uint64_t tick = 60; tick < 130; ++tick) {
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pair.server.receive(tick);
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pair.server.send(tick);
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}
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CHECK(pair.server.phase() == SessionPhase::Disconnected);
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CHECK(pair.server.timedOut());
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CHECK(pair.server.disconnectReason() == "keep alive timeout");
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}
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VF_TEST(chunksAreStreamedNearestFirstAndNeverMoreThanTheTickBudget) {
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LinkQuality quality;
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quality.latencyTicks = 1;
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TransportConfig transportConfig;
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SessionConfig config = quietConfig();
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config.chunksPerTick = 2;
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Pair pair(quality, transportConfig, config);
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buildTerrain(pair.serverWorld, 3);
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pair.server.view().position = Vec3{8.0f, 8.0f, 8.0f};
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pair.client.beginHandshake("vulp", 1, 2);
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for (uint64_t tick = 0; tick < 6; ++tick) pair.step(tick);
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CHECK(pair.server.phase() == SessionPhase::Play);
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uint64_t afterFirstTicks = pair.server.stats().chunksSent;
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CHECK(afterFirstTicks > 0u);
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CHECK(afterFirstTicks <= 2u * 6u);
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// The chunk the player stands in must be among the first handful sent.
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CHECK(pair.server.view().hasChunk(Vec3i{0, 0, 0}));
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CHECK(!pair.server.view().hasChunk(Vec3i{2, 0, 2}));
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for (uint64_t tick = 6; tick < 60; ++tick) pair.step(tick);
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CHECK_EQ(pair.server.view().pendingCount(), static_cast<std::size_t>(0));
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// The sphere of radius 2 holds 33 chunk slots, only 13 of which exist in
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// the y = 0 plane, so exactly those get snapshots.
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CHECK_EQ(pair.server.stats().chunksSent, static_cast<uint64_t>(13));
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CHECK_EQ(pair.client.stats().chunksApplied, static_cast<uint64_t>(13));
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CHECK_EQ(pair.clientWorld.chunkCount(), static_cast<std::size_t>(13));
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}
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VF_TEST(manyChangesInOneChunkBecomeAMultiBlockChangeAndFewBecomeSingleBlockChanges) {
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LinkQuality quality;
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quality.latencyTicks = 1;
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TransportConfig transportConfig;
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SessionConfig config = quietConfig();
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config.multiBlockThreshold = 4;
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Pair pair(quality, transportConfig, config);
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buildTerrain(pair.serverWorld, 1);
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pair.client.beginHandshake("vulp", 1, 2);
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for (uint64_t tick = 0; tick < 40; ++tick) pair.step(tick);
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CHECK(pair.server.view().hasChunk(Vec3i{0, 0, 0}));
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for (int i = 0; i < 3; ++i) pair.edit(i, 14, 0, Block::Glowstone);
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pair.step(40);
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pair.clearDirty();
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for (uint64_t tick = 41; tick < 50; ++tick) pair.step(tick);
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CHECK_EQ(pair.server.stats().blockChangesSent, static_cast<uint64_t>(3));
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CHECK_EQ(pair.server.stats().multiBlockChangesSent, static_cast<uint64_t>(0));
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CHECK_EQ(pair.client.stats().blockChangesApplied, static_cast<uint64_t>(3));
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for (int i = 0; i < 9; ++i) pair.edit(i, 15, 0, Block::Obsidian);
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pair.step(50);
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pair.clearDirty();
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for (uint64_t tick = 51; tick < 60; ++tick) pair.step(tick);
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CHECK_EQ(pair.server.stats().blockChangesSent, static_cast<uint64_t>(3));
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CHECK_EQ(pair.server.stats().multiBlockChangesSent, static_cast<uint64_t>(1));
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CHECK_EQ(pair.client.stats().multiBlockChangesApplied, static_cast<uint64_t>(1));
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for (int i = 0; i < 9; ++i) CHECK(pair.clientWorld.blockAt(i, 15, 0) == Block::Obsidian);
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for (int i = 0; i < 3; ++i) CHECK(pair.clientWorld.blockAt(i, 14, 0) == Block::Glowstone);
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}
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VF_TEST(theClientWorldMirrorsTheServerByteForByteAcrossAnUnreliableLink) {
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LinkQuality quality;
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quality.lossPercent = 30;
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quality.duplicatePercent = 10;
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quality.reorderPercent = 25;
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quality.reorderExtraTicks = 4;
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quality.latencyTicks = 2;
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quality.seed = 0xabcdef0123456789ull;
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TransportConfig transportConfig;
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transportConfig.mtu = 512;
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transportConfig.retransmitTimeoutTicks = 10;
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transportConfig.sendWindow = 24;
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SessionConfig config = quietConfig();
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config.chunksPerTick = 2;
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config.multiBlockThreshold = 6;
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Pair pair(quality, transportConfig, config);
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buildTerrain(pair.serverWorld, 2);
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pair.server.view().position = Vec3{8.0f, 8.0f, 8.0f};
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pair.client.beginHandshake("vulp", 1, 2);
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