mirror of
https://github.com/Mezeporta/Erupe.git
synced 2026-03-22 15:43:49 +01:00
590 lines
16 KiB
Go
590 lines
16 KiB
Go
package channelserver
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import (
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"bytes"
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"fmt"
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"io"
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"net"
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"sync"
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"testing"
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"time"
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"erupe-ce/network/mhfpacket"
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"erupe-ce/server/channelserver/compression/nullcomp"
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)
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// ============================================================================
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// CLIENT CONNECTION SIMULATION TESTS
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// Tests that simulate actual client connections, not just mock sessions
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//
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// Purpose: Test the complete connection lifecycle as a real client would
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// - TCP connection establishment
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// - Packet exchange
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// - Graceful disconnect
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// - Ungraceful disconnect
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// - Network errors
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// ============================================================================
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// MockNetConn simulates a net.Conn for testing
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type MockNetConn struct {
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readBuf *bytes.Buffer
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writeBuf *bytes.Buffer
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closed bool
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mu sync.Mutex
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readErr error
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writeErr error
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}
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func NewMockNetConn() *MockNetConn {
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return &MockNetConn{
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readBuf: new(bytes.Buffer),
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writeBuf: new(bytes.Buffer),
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}
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}
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func (m *MockNetConn) Read(b []byte) (n int, err error) {
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m.mu.Lock()
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defer m.mu.Unlock()
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if m.closed {
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return 0, io.EOF
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}
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if m.readErr != nil {
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return 0, m.readErr
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}
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return m.readBuf.Read(b)
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}
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func (m *MockNetConn) Write(b []byte) (n int, err error) {
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m.mu.Lock()
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defer m.mu.Unlock()
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if m.closed {
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return 0, io.ErrClosedPipe
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}
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if m.writeErr != nil {
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return 0, m.writeErr
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}
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return m.writeBuf.Write(b)
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}
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func (m *MockNetConn) Close() error {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.closed = true
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return nil
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}
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func (m *MockNetConn) LocalAddr() net.Addr {
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return &net.TCPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 54001}
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}
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func (m *MockNetConn) RemoteAddr() net.Addr {
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return &net.TCPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 12345}
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}
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func (m *MockNetConn) SetDeadline(t time.Time) error {
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return nil
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}
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func (m *MockNetConn) SetReadDeadline(t time.Time) error {
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return nil
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}
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func (m *MockNetConn) SetWriteDeadline(t time.Time) error {
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return nil
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}
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func (m *MockNetConn) QueueRead(data []byte) {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.readBuf.Write(data)
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}
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func (m *MockNetConn) GetWritten() []byte {
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m.mu.Lock()
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defer m.mu.Unlock()
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return m.writeBuf.Bytes()
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}
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func (m *MockNetConn) IsClosed() bool {
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m.mu.Lock()
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defer m.mu.Unlock()
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return m.closed
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}
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// TestClientConnection_GracefulLoginLogout simulates a complete client session
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// This is closer to what a real client does than handler-only tests
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func TestClientConnection_GracefulLoginLogout(t *testing.T) {
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db := SetupTestDB(t)
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defer TeardownTestDB(t, db)
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server := createTestServerWithDB(t, db)
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defer server.Shutdown()
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userID := CreateTestUser(t, db, "client_test_user")
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charID := CreateTestCharacter(t, db, userID, "ClientChar")
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t.Log("Simulating client connection with graceful logout")
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// Simulate client connecting
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mockConn := NewMockNetConn()
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session := createTestSessionForServerWithChar(server, charID, "ClientChar")
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// In real scenario, this would be set up by the connection handler
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// For testing, we test handlers directly without starting packet loops
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// Client sends save packet
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saveData := make([]byte, 150000)
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copy(saveData[88:], []byte("ClientChar\x00"))
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saveData[8000] = 0xAB
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saveData[8001] = 0xCD
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compressed, err := nullcomp.Compress(saveData)
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if err != nil {
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t.Fatalf("Failed to compress: %v", err)
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}
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savePkt := &mhfpacket.MsgMhfSavedata{
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SaveType: 0,
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AckHandle: 12001,
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AllocMemSize: uint32(len(compressed)),
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DataSize: uint32(len(compressed)),
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RawDataPayload: compressed,
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}
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handleMsgMhfSavedata(session, savePkt)
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time.Sleep(100 * time.Millisecond)
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// Client sends logout packet (graceful)
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t.Log("Client sending logout packet")
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logoutPkt := &mhfpacket.MsgSysLogout{}
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handleMsgSysLogout(session, logoutPkt)
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time.Sleep(100 * time.Millisecond)
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// Verify connection closed
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if !mockConn.IsClosed() {
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// Note: Our mock doesn't auto-close, but real session would
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t.Log("Mock connection not closed (expected for mock)")
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}
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// Verify data saved
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var savedCompressed []byte
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err = db.QueryRow("SELECT savedata FROM characters WHERE id = $1", charID).Scan(&savedCompressed)
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if err != nil {
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t.Fatalf("Failed to query savedata: %v", err)
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}
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if len(savedCompressed) == 0 {
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t.Error("❌ No data saved after graceful logout")
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} else {
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decompressed, _ := nullcomp.Decompress(savedCompressed)
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if len(decompressed) > 8001 {
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if decompressed[8000] == 0xAB && decompressed[8001] == 0xCD {
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t.Log("✓ Data saved correctly after graceful logout")
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} else {
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t.Error("❌ Data corrupted")
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}
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}
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}
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}
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// TestClientConnection_UngracefulDisconnect simulates network failure
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func TestClientConnection_UngracefulDisconnect(t *testing.T) {
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db := SetupTestDB(t)
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defer TeardownTestDB(t, db)
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server := createTestServerWithDB(t, db)
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defer server.Shutdown()
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userID := CreateTestUser(t, db, "disconnect_user")
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charID := CreateTestCharacter(t, db, userID, "DisconnectChar")
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t.Log("Simulating ungraceful client disconnect (network error)")
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session := createTestSessionForServerWithChar(server, charID, "DisconnectChar")
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// Note: Not calling Start() - testing handlers directly
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time.Sleep(50 * time.Millisecond)
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// Client saves some data
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saveData := make([]byte, 150000)
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copy(saveData[88:], []byte("DisconnectChar\x00"))
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saveData[9000] = 0xEF
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saveData[9001] = 0x12
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compressed, _ := nullcomp.Compress(saveData)
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savePkt := &mhfpacket.MsgMhfSavedata{
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SaveType: 0,
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AckHandle: 13001,
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AllocMemSize: uint32(len(compressed)),
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DataSize: uint32(len(compressed)),
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RawDataPayload: compressed,
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}
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handleMsgMhfSavedata(session, savePkt)
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time.Sleep(100 * time.Millisecond)
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// Simulate network failure - connection drops without logout packet
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t.Log("Simulating network failure (no logout packet sent)")
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// In real scenario, recvLoop would detect io.EOF and call logoutPlayer
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logoutPlayer(session)
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time.Sleep(100 * time.Millisecond)
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// Verify data was saved despite ungraceful disconnect
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var savedCompressed []byte
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err := db.QueryRow("SELECT savedata FROM characters WHERE id = $1", charID).Scan(&savedCompressed)
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if err != nil {
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t.Fatalf("Failed to query: %v", err)
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}
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if len(savedCompressed) == 0 {
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t.Error("❌ CRITICAL: No data saved after ungraceful disconnect")
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t.Error("This means players lose data when they have connection issues!")
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} else {
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t.Log("✓ Data saved even after ungraceful disconnect")
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}
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}
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// TestClientConnection_SessionTimeout simulates timeout disconnect
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func TestClientConnection_SessionTimeout(t *testing.T) {
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db := SetupTestDB(t)
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defer TeardownTestDB(t, db)
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server := createTestServerWithDB(t, db)
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defer server.Shutdown()
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userID := CreateTestUser(t, db, "timeout_user")
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charID := CreateTestCharacter(t, db, userID, "TimeoutChar")
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t.Log("Simulating session timeout (30s no packets)")
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session := createTestSessionForServerWithChar(server, charID, "TimeoutChar")
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// Note: Not calling Start() - testing handlers directly
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time.Sleep(50 * time.Millisecond)
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// Save data
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saveData := make([]byte, 150000)
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copy(saveData[88:], []byte("TimeoutChar\x00"))
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saveData[10000] = 0xFF
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compressed, _ := nullcomp.Compress(saveData)
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savePkt := &mhfpacket.MsgMhfSavedata{
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SaveType: 0,
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AckHandle: 14001,
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AllocMemSize: uint32(len(compressed)),
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DataSize: uint32(len(compressed)),
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RawDataPayload: compressed,
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}
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handleMsgMhfSavedata(session, savePkt)
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time.Sleep(100 * time.Millisecond)
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// Simulate timeout by setting lastPacket to long ago
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session.lastPacket = time.Now().Add(-35 * time.Second)
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// In production, invalidateSessions() goroutine would detect this
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// and call logoutPlayer(session)
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t.Log("Session timed out (>30s since last packet)")
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logoutPlayer(session)
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time.Sleep(100 * time.Millisecond)
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// Verify data saved
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var savedCompressed []byte
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err := db.QueryRow("SELECT savedata FROM characters WHERE id = $1", charID).Scan(&savedCompressed)
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if err != nil {
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t.Fatalf("Failed to query: %v", err)
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}
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if len(savedCompressed) == 0 {
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t.Error("❌ CRITICAL: No data saved after timeout disconnect")
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} else {
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decompressed, _ := nullcomp.Decompress(savedCompressed)
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if len(decompressed) > 10000 && decompressed[10000] == 0xFF {
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t.Log("✓ Data saved correctly after timeout")
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} else {
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t.Error("❌ Data corrupted or not saved")
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}
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}
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}
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// TestClientConnection_MultipleClientsSimultaneous simulates multiple clients
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func TestClientConnection_MultipleClientsSimultaneous(t *testing.T) {
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db := SetupTestDB(t)
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defer TeardownTestDB(t, db)
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server := createTestServerWithDB(t, db)
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defer server.Shutdown()
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numClients := 3
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var wg sync.WaitGroup
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wg.Add(numClients)
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t.Logf("Simulating %d clients connecting simultaneously", numClients)
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for clientNum := 0; clientNum < numClients; clientNum++ {
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go func(num int) {
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defer wg.Done()
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username := fmt.Sprintf("multi_client_%d", num)
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charName := fmt.Sprintf("MultiClient%d", num)
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userID := CreateTestUser(t, db, username)
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charID := CreateTestCharacter(t, db, userID, charName)
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session := createTestSessionForServerWithChar(server, charID, charName)
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// Note: Not calling Start() - testing handlers directly
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time.Sleep(30 * time.Millisecond)
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// Each client saves their own data
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saveData := make([]byte, 150000)
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copy(saveData[88:], []byte(charName+"\x00"))
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saveData[11000+num] = byte(num)
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compressed, _ := nullcomp.Compress(saveData)
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savePkt := &mhfpacket.MsgMhfSavedata{
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SaveType: 0,
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AckHandle: uint32(15000 + num),
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AllocMemSize: uint32(len(compressed)),
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DataSize: uint32(len(compressed)),
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RawDataPayload: compressed,
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}
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handleMsgMhfSavedata(session, savePkt)
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time.Sleep(50 * time.Millisecond)
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// Graceful logout
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logoutPlayer(session)
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time.Sleep(50 * time.Millisecond)
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// Verify individual client's data
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var savedCompressed []byte
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err := db.QueryRow("SELECT savedata FROM characters WHERE id = $1", charID).Scan(&savedCompressed)
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if err != nil {
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t.Errorf("Client %d: Failed to query: %v", num, err)
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return
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}
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if len(savedCompressed) > 0 {
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decompressed, _ := nullcomp.Decompress(savedCompressed)
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if len(decompressed) > 11000+num {
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if decompressed[11000+num] == byte(num) {
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t.Logf("Client %d: ✓ Data saved correctly", num)
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} else {
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t.Errorf("Client %d: ❌ Data corrupted", num)
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}
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}
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} else {
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t.Errorf("Client %d: ❌ No data saved", num)
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}
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}(clientNum)
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}
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wg.Wait()
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t.Log("All clients disconnected")
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}
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// TestClientConnection_SaveDuringCombat simulates saving while in quest
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// This tests if being in a stage affects save behavior
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func TestClientConnection_SaveDuringCombat(t *testing.T) {
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db := SetupTestDB(t)
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defer TeardownTestDB(t, db)
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server := createTestServerWithDB(t, db)
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defer server.Shutdown()
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userID := CreateTestUser(t, db, "combat_user")
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charID := CreateTestCharacter(t, db, userID, "CombatChar")
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t.Log("Simulating save/logout while in quest/stage")
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session := createTestSessionForServerWithChar(server, charID, "CombatChar")
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// Simulate being in a stage (quest)
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// In real scenario, session.stage would be set when entering quest
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// For now, we'll just test the basic save/logout flow
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// Note: Not calling Start() - testing handlers directly
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time.Sleep(50 * time.Millisecond)
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// Save data during "combat"
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saveData := make([]byte, 150000)
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copy(saveData[88:], []byte("CombatChar\x00"))
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saveData[12000] = 0xAA
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compressed, _ := nullcomp.Compress(saveData)
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savePkt := &mhfpacket.MsgMhfSavedata{
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SaveType: 0,
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AckHandle: 16001,
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AllocMemSize: uint32(len(compressed)),
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DataSize: uint32(len(compressed)),
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RawDataPayload: compressed,
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}
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handleMsgMhfSavedata(session, savePkt)
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time.Sleep(100 * time.Millisecond)
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// Disconnect while in stage
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t.Log("Player disconnects during quest")
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logoutPlayer(session)
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time.Sleep(100 * time.Millisecond)
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// Verify data saved even during combat
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var savedCompressed []byte
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err := db.QueryRow("SELECT savedata FROM characters WHERE id = $1", charID).Scan(&savedCompressed)
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if err != nil {
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t.Fatalf("Failed to query: %v", err)
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}
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if len(savedCompressed) > 0 {
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decompressed, _ := nullcomp.Decompress(savedCompressed)
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if len(decompressed) > 12000 && decompressed[12000] == 0xAA {
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t.Log("✓ Data saved correctly even during quest")
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} else {
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t.Error("❌ Data not saved correctly during quest")
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}
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} else {
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t.Error("❌ CRITICAL: No data saved when disconnecting during quest")
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}
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}
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// TestClientConnection_ReconnectAfterCrash simulates client crash and reconnect
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func TestClientConnection_ReconnectAfterCrash(t *testing.T) {
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db := SetupTestDB(t)
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defer TeardownTestDB(t, db)
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server := createTestServerWithDB(t, db)
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defer server.Shutdown()
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userID := CreateTestUser(t, db, "crash_user")
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charID := CreateTestCharacter(t, db, userID, "CrashChar")
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t.Log("Simulating client crash and immediate reconnect")
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// First session - client crashes
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session1 := createTestSessionForServerWithChar(server, charID, "CrashChar")
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// Not calling Start()
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time.Sleep(50 * time.Millisecond)
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// Save some data before crash
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saveData := make([]byte, 150000)
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copy(saveData[88:], []byte("CrashChar\x00"))
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saveData[13000] = 0xBB
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compressed, _ := nullcomp.Compress(saveData)
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savePkt := &mhfpacket.MsgMhfSavedata{
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SaveType: 0,
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AckHandle: 17001,
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AllocMemSize: uint32(len(compressed)),
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DataSize: uint32(len(compressed)),
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RawDataPayload: compressed,
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}
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handleMsgMhfSavedata(session1, savePkt)
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time.Sleep(50 * time.Millisecond)
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// Client crashes (ungraceful disconnect)
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t.Log("Client crashes (no logout packet)")
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logoutPlayer(session1)
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time.Sleep(100 * time.Millisecond)
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// Client reconnects immediately
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t.Log("Client reconnects after crash")
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session2 := createTestSessionForServerWithChar(server, charID, "CrashChar")
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// Not calling Start()
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time.Sleep(50 * time.Millisecond)
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// Load data
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loadPkt := &mhfpacket.MsgMhfLoaddata{
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AckHandle: 18001,
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}
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handleMsgMhfLoaddata(session2, loadPkt)
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time.Sleep(50 * time.Millisecond)
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// Verify data from before crash
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var savedCompressed []byte
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err := db.QueryRow("SELECT savedata FROM characters WHERE id = $1", charID).Scan(&savedCompressed)
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if err != nil {
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t.Fatalf("Failed to query: %v", err)
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}
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if len(savedCompressed) > 0 {
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decompressed, _ := nullcomp.Decompress(savedCompressed)
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if len(decompressed) > 13000 && decompressed[13000] == 0xBB {
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t.Log("✓ Data recovered correctly after crash")
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} else {
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t.Error("❌ Data lost or corrupted after crash")
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}
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} else {
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t.Error("❌ CRITICAL: All data lost after crash")
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}
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logoutPlayer(session2)
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}
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// TestClientConnection_PacketDuringLogout tests race condition
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// What happens if save packet arrives during logout?
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func TestClientConnection_PacketDuringLogout(t *testing.T) {
|
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db := SetupTestDB(t)
|
|
defer TeardownTestDB(t, db)
|
|
|
|
server := createTestServerWithDB(t, db)
|
|
defer server.Shutdown()
|
|
|
|
userID := CreateTestUser(t, db, "race_user")
|
|
charID := CreateTestCharacter(t, db, userID, "RaceChar")
|
|
|
|
t.Log("Testing race condition: packet during logout")
|
|
|
|
session := createTestSessionForServerWithChar(server, charID, "RaceChar")
|
|
// Note: Not calling Start() - testing handlers directly
|
|
time.Sleep(50 * time.Millisecond)
|
|
|
|
// Prepare save packet
|
|
saveData := make([]byte, 150000)
|
|
copy(saveData[88:], []byte("RaceChar\x00"))
|
|
saveData[14000] = 0xCC
|
|
|
|
compressed, _ := nullcomp.Compress(saveData)
|
|
savePkt := &mhfpacket.MsgMhfSavedata{
|
|
SaveType: 0,
|
|
AckHandle: 19001,
|
|
AllocMemSize: uint32(len(compressed)),
|
|
DataSize: uint32(len(compressed)),
|
|
RawDataPayload: compressed,
|
|
}
|
|
|
|
var wg sync.WaitGroup
|
|
wg.Add(2)
|
|
|
|
// Goroutine 1: Send save packet
|
|
go func() {
|
|
defer wg.Done()
|
|
handleMsgMhfSavedata(session, savePkt)
|
|
t.Log("Save packet processed")
|
|
}()
|
|
|
|
// Goroutine 2: Trigger logout (almost) simultaneously
|
|
go func() {
|
|
defer wg.Done()
|
|
time.Sleep(10 * time.Millisecond) // Small delay
|
|
logoutPlayer(session)
|
|
t.Log("Logout processed")
|
|
}()
|
|
|
|
wg.Wait()
|
|
time.Sleep(100 * time.Millisecond)
|
|
|
|
// Verify final state
|
|
var savedCompressed []byte
|
|
err := db.QueryRow("SELECT savedata FROM characters WHERE id = $1", charID).Scan(&savedCompressed)
|
|
if err != nil {
|
|
t.Fatalf("Failed to query: %v", err)
|
|
}
|
|
|
|
if len(savedCompressed) > 0 {
|
|
decompressed, _ := nullcomp.Decompress(savedCompressed)
|
|
if len(decompressed) > 14000 && decompressed[14000] == 0xCC {
|
|
t.Log("✓ Race condition handled correctly - data saved")
|
|
} else {
|
|
t.Error("❌ Race condition caused data corruption")
|
|
}
|
|
} else {
|
|
t.Error("❌ Race condition caused data loss")
|
|
}
|
|
}
|
|
|