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config_test.go
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config_test.go
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package quic
import (
"fmt"
"net"
"reflect"
"time"
mocklogging "github.com/lucas-clemente/quic-go/internal/mocks/logging"
"github.com/lucas-clemente/quic-go/internal/protocol"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Config", func() {
Context("validating", func() {
It("validates a nil config", func() {
Expect(validateConfig(nil)).To(Succeed())
})
It("validates a config with normal values", func() {
Expect(validateConfig(populateServerConfig(&Config{}))).To(Succeed())
})
It("errors on too large values for MaxIncomingStreams", func() {
Expect(validateConfig(&Config{MaxIncomingStreams: 1<<60 + 1})).To(MatchError("invalid value for Config.MaxIncomingStreams"))
})
It("errors on too large values for MaxIncomingUniStreams", func() {
Expect(validateConfig(&Config{MaxIncomingUniStreams: 1<<60 + 1})).To(MatchError("invalid value for Config.MaxIncomingUniStreams"))
})
})
configWithNonZeroNonFunctionFields := func() *Config {
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 "AcceptToken", "GetLogWriter", "AllowConnectionWindowIncrease":
// Can't compare functions.
case "Versions":
f.Set(reflect.ValueOf([]VersionNumber{1, 2, 3}))
case "ConnectionIDLength":
f.Set(reflect.ValueOf(8))
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([]byte{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 "DisablePathMTUDiscovery":
f.Set(reflect.ValueOf(true))
case "Tracer":
f.Set(reflect.ValueOf(mocklogging.NewMockTracer(mockCtrl)))
default:
Fail(fmt.Sprintf("all fields must be accounted for, but saw unknown field %q", fn))
}
}
return c
}
It("uses 10s handshake timeout for short handshake idle timeouts", func() {
c := &Config{HandshakeIdleTimeout: time.Second}
Expect(c.handshakeTimeout()).To(Equal(protocol.DefaultHandshakeTimeout))
})
It("uses twice the handshake idle timeouts for the handshake timeout, for long handshake idle timeouts", func() {
c := &Config{HandshakeIdleTimeout: time.Second * 11 / 2}
Expect(c.handshakeTimeout()).To(Equal(11 * time.Second))
})
Context("cloning", func() {
It("clones function fields", func() {
var calledAcceptToken, calledAllowConnectionWindowIncrease bool
c1 := &Config{
AcceptToken: func(_ net.Addr, _ *Token) bool { calledAcceptToken = true; return true },
AllowConnectionWindowIncrease: func(Connection, uint64) bool { calledAllowConnectionWindowIncrease = true; return true },
}
c2 := c1.Clone()
c2.AcceptToken(&net.UDPAddr{}, &Token{})
Expect(calledAcceptToken).To(BeTrue())
c2.AllowConnectionWindowIncrease(nil, 1234)
Expect(calledAllowConnectionWindowIncrease).To(BeTrue())
})
It("clones non-function fields", func() {
c := configWithNonZeroNonFunctionFields()
Expect(c.Clone()).To(Equal(c))
})
It("returns a copy", func() {
c1 := &Config{
MaxIncomingStreams: 100,
AcceptToken: func(_ net.Addr, _ *Token) bool { return true },
}
c2 := c1.Clone()
c2.MaxIncomingStreams = 200
c2.AcceptToken = func(_ net.Addr, _ *Token) bool { return false }
Expect(c1.MaxIncomingStreams).To(BeEquivalentTo(100))
Expect(c1.AcceptToken(&net.UDPAddr{}, nil)).To(BeTrue())
})
})
Context("populating", func() {
It("populates function fields", func() {
var calledAcceptToken bool
c1 := &Config{
AcceptToken: func(_ net.Addr, _ *Token) bool { calledAcceptToken = true; return true },
}
c2 := populateConfig(c1)
c2.AcceptToken(&net.UDPAddr{}, &Token{})
Expect(calledAcceptToken).To(BeTrue())
})
It("copies non-function fields", func() {
c := configWithNonZeroNonFunctionFields()
Expect(populateConfig(c)).To(Equal(c))
})
It("populates empty fields with default values", func() {
c := populateConfig(&Config{})
Expect(c.Versions).To(Equal(protocol.SupportedVersions))
Expect(c.HandshakeIdleTimeout).To(Equal(protocol.DefaultHandshakeIdleTimeout))
Expect(c.InitialStreamReceiveWindow).To(BeEquivalentTo(protocol.DefaultInitialMaxStreamData))
Expect(c.MaxStreamReceiveWindow).To(BeEquivalentTo(protocol.DefaultMaxReceiveStreamFlowControlWindow))
Expect(c.InitialConnectionReceiveWindow).To(BeEquivalentTo(protocol.DefaultInitialMaxData))
Expect(c.MaxConnectionReceiveWindow).To(BeEquivalentTo(protocol.DefaultMaxReceiveConnectionFlowControlWindow))
Expect(c.MaxIncomingStreams).To(BeEquivalentTo(protocol.DefaultMaxIncomingStreams))
Expect(c.MaxIncomingUniStreams).To(BeEquivalentTo(protocol.DefaultMaxIncomingUniStreams))
Expect(c.DisableVersionNegotiationPackets).To(BeFalse())
Expect(c.DisablePathMTUDiscovery).To(BeFalse())
})
It("populates empty fields with default values, for the server", func() {
c := populateServerConfig(&Config{})
Expect(c.ConnectionIDLength).To(Equal(protocol.DefaultConnectionIDLength))
Expect(c.AcceptToken).ToNot(BeNil())
})
It("sets a default connection ID length if we didn't create the conn, for the client", func() {
c := populateClientConfig(&Config{}, false)
Expect(c.ConnectionIDLength).To(Equal(protocol.DefaultConnectionIDLength))
})
It("doesn't set a default connection ID length if we created the conn, for the client", func() {
c := populateClientConfig(&Config{}, true)
Expect(c.ConnectionIDLength).To(BeZero())
})
})
})