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package quic
import (
"context"
"reflect"
"testing"
"time"
"github.com/quic-go/quic-go/internal/protocol"
"github.com/quic-go/quic-go/logging"
"github.com/quic-go/quic-go/quicvarint"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestConfigValidation(t *testing.T) {
t.Run("nil config", func(t *testing.T) {
require.NoError(t, validateConfig(nil))
})
t.Run("config with a few values set", func(t *testing.T) {
conf := populateConfig(&Config{
MaxIncomingStreams: 5,
MaxStreamReceiveWindow: 10,
})
require.NoError(t, validateConfig(conf))
require.Equal(t, int64(5), conf.MaxIncomingStreams)
require.Equal(t, uint64(10), conf.MaxStreamReceiveWindow)
})
t.Run("stream limits", func(t *testing.T) {
conf := &Config{
MaxIncomingStreams: 1<<60 + 1,
MaxIncomingUniStreams: 1<<60 + 2,
}
require.NoError(t, validateConfig(conf))
require.Equal(t, int64(1<<60), conf.MaxIncomingStreams)
require.Equal(t, int64(1<<60), conf.MaxIncomingUniStreams)
})
t.Run("flow control windows", func(t *testing.T) {
conf := &Config{
MaxStreamReceiveWindow: quicvarint.Max + 1,
MaxConnectionReceiveWindow: quicvarint.Max + 2,
}
require.NoError(t, validateConfig(conf))
require.Equal(t, uint64(quicvarint.Max), conf.MaxStreamReceiveWindow)
require.Equal(t, uint64(quicvarint.Max), conf.MaxConnectionReceiveWindow)
})
t.Run("initial packet size", func(t *testing.T) {
// not set
conf := &Config{InitialPacketSize: 0}
require.NoError(t, validateConfig(conf))
require.Zero(t, conf.InitialPacketSize)
// too small
conf = &Config{InitialPacketSize: 10}
require.NoError(t, validateConfig(conf))
require.Equal(t, uint16(1200), conf.InitialPacketSize)
// too large
conf = &Config{InitialPacketSize: protocol.MaxPacketBufferSize + 1}
require.NoError(t, validateConfig(conf))
require.Equal(t, uint16(protocol.MaxPacketBufferSize), conf.InitialPacketSize)
})
}
func TestConfigHandshakeIdleTimeout(t *testing.T) {
c := &Config{HandshakeIdleTimeout: time.Second * 11 / 2}
require.Equal(t, 11*time.Second, c.handshakeTimeout())
}
func configWithNonZeroNonFunctionFields(t *testing.T) *Config {
t.Helper()
c := &Config{}
v := reflect.ValueOf(c).Elem()
typ := v.Type()
for i := 0; i < typ.NumField(); i++ {
f := v.Field(i)
if !f.CanSet() {
// unexported field; not cloned.
continue
}
switch fn := typ.Field(i).Name; fn {
case "GetConfigForClient", "RequireAddressValidation", "GetLogWriter", "AllowConnectionWindowIncrease", "Tracer":
// Can't compare functions.
case "Versions":
f.Set(reflect.ValueOf([]Version{1, 2, 3}))
case "ConnectionIDLength":
f.Set(reflect.ValueOf(8))
case "ConnectionIDGenerator":
f.Set(reflect.ValueOf(&protocol.DefaultConnectionIDGenerator{ConnLen: protocol.DefaultConnectionIDLength}))
case "HandshakeIdleTimeout":
f.Set(reflect.ValueOf(time.Second))
case "MaxIdleTimeout":
f.Set(reflect.ValueOf(time.Hour))
case "TokenStore":
f.Set(reflect.ValueOf(NewLRUTokenStore(2, 3)))
case "InitialStreamReceiveWindow":
f.Set(reflect.ValueOf(uint64(1234)))
case "MaxStreamReceiveWindow":
f.Set(reflect.ValueOf(uint64(9)))
case "InitialConnectionReceiveWindow":
f.Set(reflect.ValueOf(uint64(4321)))
case "MaxConnectionReceiveWindow":
f.Set(reflect.ValueOf(uint64(10)))
case "MaxIncomingStreams":
f.Set(reflect.ValueOf(int64(11)))
case "MaxIncomingUniStreams":
f.Set(reflect.ValueOf(int64(12)))
case "StatelessResetKey":
f.Set(reflect.ValueOf(&StatelessResetKey{1, 2, 3, 4}))
case "KeepAlivePeriod":
f.Set(reflect.ValueOf(time.Second))
case "EnableDatagrams":
f.Set(reflect.ValueOf(true))
case "DisableVersionNegotiationPackets":
f.Set(reflect.ValueOf(true))
case "InitialPacketSize":
f.Set(reflect.ValueOf(uint16(1350)))
case "DisablePathMTUDiscovery":
f.Set(reflect.ValueOf(true))
case "Allow0RTT":
f.Set(reflect.ValueOf(true))
case "EnableStreamResetPartialDelivery":
f.Set(reflect.ValueOf(true))
default:
t.Fatalf("all fields must be accounted for, but saw unknown field %q", fn)
}
}
return c
}
func TestConfigClone(t *testing.T) {
t.Run("function fields", func(t *testing.T) {
var calledAllowConnectionWindowIncrease, calledTracer bool
c1 := &Config{
GetConfigForClient: func(info *ClientInfo) (*Config, error) { return nil, assert.AnError },
AllowConnectionWindowIncrease: func(*Conn, uint64) bool { calledAllowConnectionWindowIncrease = true; return true },
Tracer: func(context.Context, logging.Perspective, ConnectionID) *logging.ConnectionTracer {
calledTracer = true
return nil
},
}
c2 := c1.Clone()
c2.AllowConnectionWindowIncrease(nil, 1234)
require.True(t, calledAllowConnectionWindowIncrease)
_, err := c2.GetConfigForClient(&ClientInfo{})
require.ErrorIs(t, err, assert.AnError)
c2.Tracer(context.Background(), logging.PerspectiveClient, protocol.ConnectionID{})
require.True(t, calledTracer)
})
t.Run("non-function fields", func(t *testing.T) {
c := configWithNonZeroNonFunctionFields(t)
require.Equal(t, c, c.Clone())
})
t.Run("returns a copy", func(t *testing.T) {
c1 := &Config{MaxIncomingStreams: 100}
c2 := c1.Clone()
c2.MaxIncomingStreams = 200
require.EqualValues(t, 100, c1.MaxIncomingStreams)
})
}
func TestConfigDefaultValues(t *testing.T) {
// if set, the values should be copied
c := configWithNonZeroNonFunctionFields(t)
require.Equal(t, c, populateConfig(c))
// if not set, some fields use default values
c = populateConfig(&Config{})
require.Equal(t, protocol.SupportedVersions, c.Versions)
require.Equal(t, protocol.DefaultHandshakeIdleTimeout, c.HandshakeIdleTimeout)
require.Equal(t, protocol.DefaultIdleTimeout, c.MaxIdleTimeout)
require.EqualValues(t, protocol.DefaultInitialMaxStreamData, c.InitialStreamReceiveWindow)
require.EqualValues(t, protocol.DefaultMaxReceiveStreamFlowControlWindow, c.MaxStreamReceiveWindow)
require.EqualValues(t, protocol.DefaultInitialMaxData, c.InitialConnectionReceiveWindow)
require.EqualValues(t, protocol.DefaultMaxReceiveConnectionFlowControlWindow, c.MaxConnectionReceiveWindow)
require.EqualValues(t, protocol.DefaultMaxIncomingStreams, c.MaxIncomingStreams)
require.EqualValues(t, protocol.DefaultMaxIncomingUniStreams, c.MaxIncomingUniStreams)
require.False(t, c.DisablePathMTUDiscovery)
require.Nil(t, c.GetConfigForClient)
}
func TestConfigZeroLimits(t *testing.T) {
config := &Config{
MaxIncomingStreams: -1,
MaxIncomingUniStreams: -1,
}
c := populateConfig(config)
require.Zero(t, c.MaxIncomingStreams)
require.Zero(t, c.MaxIncomingUniStreams)
}
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