teeworlds-go/go-teeworlds-protocol
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go-teeworlds-protocol/protocol7/packet_test.go

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15 KiB
Go
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package protocol7
import (
"slices"
"testing"
"github.com/teeworlds-go/go-teeworlds-protocol/chunk7"
"github.com/teeworlds-go/go-teeworlds-protocol/internal/testutils/require"
"github.com/teeworlds-go/go-teeworlds-protocol/messages7"
)
// repack packet with unknown messages should not lose data
func TestRepackUnknownMessages(t *testing.T) {
// TODO: once 9e220138-d393-3cb0-90f1-e587c00ab1d0
// is supported this test makes no sense anymore
// because if the entire ddnet protocol is implemeted this dump does
// not contain an unknown message anymore
// to fix this add a custom unused uuid ddnet msg and or a unused teeworlds msg id
// libtw2 dissector dump of ddnet7 connecting to official ddnet server
// Teeworlds 0.7 Protocol packet
// Teeworlds 0.7 Protocol chunk: game.sv_chat
// Teeworlds 0.7 Protocol chunk: game.sv_chat
// Teeworlds 0.7 Protocol chunk: game.sv_game_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info_remove
// Teeworlds 0.7 Protocol chunk: game.9e220138-d393-3cb0-90f1-e587c00ab1d0
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
// Teeworlds 0.7 Protocol chunk: game.sv_command_info
dump := []byte{
0x00, 0x05, 0x16, 0x8d, 0x5b, 0x17, 0x48, 0x40, 0x2c, 0x24, 0x06, 0x01, 0x40, 0x40, 0x44, 0x44,
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0x00,
}
conn := Session{}
packet := Packet{}
err := packet.Unpack(dump)
require.NoError(t, err)
repack := packet.Pack(&conn)
require.Equal(t, dump, repack)
}
// update chunk headers
func TestPackUpdateChunkHeaders(t *testing.T) {
// The chunk header is nil by default
packet := Packet{}
packet.Messages = append(packet.Messages, &messages7.SvChat{Message: "foo"})
{
got := packet.Messages[0].Header()
require.NotNil(t, got)
}
// When packing the chunk header will be set automatically
// Based on the current context
conn := &Session{Sequence: 1}
_ = packet.Pack(conn)
{
got := packet.Messages[0].Header()
want := &chunk7.ChunkHeader{
Flags: chunk7.ChunkFlags{
Vital: true,
},
Size: 8,
Seq: 2,
}
require.Equal(t, want, got)
}
// When the chunk header is already set
// Packing will only update the size
var chat *messages7.SvChat
var ok bool
if chat, ok = packet.Messages[0].(*messages7.SvChat); ok {
chat.Message = "hello world"
packet.Messages[0] = chat
} else {
t.Fatal("failed to cast chat message")
}
_ = packet.Pack(conn)
{
got := packet.Messages[0].Header()
want := &chunk7.ChunkHeader{
Flags: chunk7.ChunkFlags{
Vital: true,
},
Size: 16,
Seq: 2,
}
require.Equal(t, want, got)
}
}
// pack header
func TestPackHeader(t *testing.T) {
header := PacketHeader{
Flags: PacketFlags{
Connless: false,
Compression: false,
Resend: false,
Control: true,
},
Ack: 10,
NumChunks: 0,
Token: [4]byte{0xcf, 0x2e, 0xde, 0x1d},
}
want := []byte{0x04, 0x0a, 0x00, 0xcf, 0x2e, 0xde, 0x1d}
got := header.Pack()
require.Equal(t, want, got)
}
// pack flags
func TestPackFlagsUnset(t *testing.T) {
flags := PacketFlags{
Connless: false,
Compression: false,
Resend: false,
Control: false,
}
want := []byte{0b0000}
got := flags.Pack()
require.Equal(t, want, got)
}
func TestPackFlagsCompressionSet(t *testing.T) {
flags := PacketFlags{
Connless: false,
Compression: true,
Resend: false,
Control: false,
}
want := []byte{0b0100}
got := flags.Pack()
require.Equal(t, want, got)
}
func TestPackFlagsAllSet(t *testing.T) {
flags := PacketFlags{
Connless: true,
Compression: true,
Resend: true,
Control: true,
}
want := []byte{0b1111}
got := flags.Pack()
require.Equal(t, want, got)
}
// unpack
func TestUnpackFlagsAllSet(t *testing.T) {
want := PacketFlags{
Connless: true,
Compression: true,
Resend: true,
Control: true,
}
got := PacketFlags{}
err := got.Unpack([]byte{0b00111100})
require.NoError(t, err)
require.Equal(t, want, got)
}
func TestUnpackFlagsControlSet(t *testing.T) {
want := PacketFlags{
Connless: false,
Compression: false,
Resend: false,
Control: true,
}
got := PacketFlags{}
err := got.Unpack([]byte{0b00000100})
require.NoError(t, err)
require.Equal(t, want, got)
}
func TestUnpackFlagsUnset(t *testing.T) {
want := PacketFlags{
Connless: false,
Compression: false,
Resend: false,
Control: false,
}
got := PacketFlags{}
err := got.Unpack([]byte{0b00000000})
require.NoError(t, err)
require.Equal(t, want, got)
}
// packet header unpack
func TestUnpackCloseWithReason(t *testing.T) {
want := PacketHeader{
Flags: PacketFlags{
Connless: false,
Compression: false,
Resend: false,
Control: true,
},
Ack: 10,
NumChunks: 0,
Token: [4]byte{0xcf, 0x2e, 0xde, 0x1d},
}
got := PacketHeader{}
err := got.Unpack(slices.Concat(
[]byte{0x04, 0x0a, 0x00, 0xcf, 0x2e, 0xde, 0x1d, 0x04},
[]byte("shutdown"),
[]byte{0x00},
))
require.NoError(t, err)
require.Equal(t, want, got)
}
func TestUnpackHeaderFlagsControlSet(t *testing.T) {
want := PacketHeader{
Flags: PacketFlags{
Connless: false,
Compression: false,
Resend: false,
Control: true,
},
Ack: 0,
NumChunks: 0,
Token: [4]byte{0xff, 0xff, 0xff, 0xff},
}
got := PacketHeader{}
err := got.Unpack([]byte{0b00000100, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff})
require.NoError(t, err)
require.Equal(t, want, got)
}
func TestUnpackHeaderFlagsAllSet(t *testing.T) {
want := PacketHeader{
Flags: PacketFlags{
Connless: true,
Compression: true,
Resend: true,
Control: true,
},
Ack: 0,
NumChunks: 0,
Token: [4]byte{0xff, 0xff, 0xff, 0xff},
}
got := PacketHeader{}
err := got.Unpack([]byte{0b00111100, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff})
require.NoError(t, err)
require.Equal(t, want, got)
}
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