cloudflared-mirror/connection/protocol_test.go

307 lines
12 KiB
Go

package connection
import (
"fmt"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/cloudflare/cloudflared/edgediscovery"
)
const (
testNoTTL = 0
noWarpRoutingEnabled = false
)
var (
testNamedTunnelProperties = &NamedTunnelProperties{
Credentials: Credentials{
AccountTag: "testAccountTag",
},
}
)
func mockFetcher(getError bool, protocolPercent ...edgediscovery.ProtocolPercent) PercentageFetcher {
return func() (edgediscovery.ProtocolPercents, error) {
if getError {
return nil, fmt.Errorf("failed to fetch percentage")
}
return protocolPercent, nil
}
}
type dynamicMockFetcher struct {
protocolPercents edgediscovery.ProtocolPercents
err error
}
func (dmf *dynamicMockFetcher) fetch() PercentageFetcher {
return func() (edgediscovery.ProtocolPercents, error) {
return dmf.protocolPercents, dmf.err
}
}
func TestNewProtocolSelector(t *testing.T) {
tests := []struct {
name string
protocol string
expectedProtocol Protocol
hasFallback bool
expectedFallback Protocol
warpRoutingEnabled bool
namedTunnelConfig *NamedTunnelProperties
fetchFunc PercentageFetcher
wantErr bool
}{
{
name: "classic tunnel",
protocol: "h2mux",
expectedProtocol: H2mux,
namedTunnelConfig: nil,
},
{
name: "named tunnel over h2mux",
protocol: "h2mux",
expectedProtocol: H2mux,
fetchFunc: func() (edgediscovery.ProtocolPercents, error) { return nil, nil },
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "named tunnel over http2",
protocol: "http2",
expectedProtocol: HTTP2,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 0}),
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "named tunnel http2 disabled still gets http2 because it is manually picked",
protocol: "http2",
expectedProtocol: HTTP2,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: -1}),
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "named tunnel quic disabled still gets quic because it is manually picked",
protocol: "quic",
expectedProtocol: QUIC,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}, edgediscovery.ProtocolPercent{Protocol: "quic", Percentage: -1}),
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "named tunnel quic and http2 disabled",
protocol: AutoSelectFlag,
expectedProtocol: H2mux,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: -1}, edgediscovery.ProtocolPercent{Protocol: "quic", Percentage: -1}),
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "named tunnel quic disabled",
protocol: AutoSelectFlag,
expectedProtocol: HTTP2,
// Hasfallback true is because if http2 fails, then we further fallback to h2mux.
hasFallback: true,
expectedFallback: H2mux,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}, edgediscovery.ProtocolPercent{Protocol: "quic", Percentage: -1}),
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "named tunnel auto all http2 disabled",
protocol: AutoSelectFlag,
expectedProtocol: H2mux,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: -1}),
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "named tunnel auto to h2mux",
protocol: AutoSelectFlag,
expectedProtocol: H2mux,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 0}),
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "named tunnel auto to http2",
protocol: AutoSelectFlag,
expectedProtocol: HTTP2,
hasFallback: true,
expectedFallback: H2mux,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}),
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "named tunnel auto to quic",
protocol: AutoSelectFlag,
expectedProtocol: QUIC,
hasFallback: true,
expectedFallback: HTTP2,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "quic", Percentage: 100}),
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "warp routing requesting h2mux",
protocol: "h2mux",
expectedProtocol: HTTP2Warp,
hasFallback: false,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}),
warpRoutingEnabled: true,
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "warp routing requesting h2mux picks HTTP2 even if http2 percent is -1",
protocol: "h2mux",
expectedProtocol: HTTP2Warp,
hasFallback: false,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: -1}),
warpRoutingEnabled: true,
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "warp routing http2",
protocol: "http2",
expectedProtocol: HTTP2Warp,
hasFallback: false,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}),
warpRoutingEnabled: true,
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "warp routing quic",
protocol: AutoSelectFlag,
expectedProtocol: QUICWarp,
hasFallback: true,
expectedFallback: HTTP2Warp,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "quic", Percentage: 100}),
warpRoutingEnabled: true,
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "warp routing auto",
protocol: AutoSelectFlag,
expectedProtocol: HTTP2Warp,
hasFallback: false,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}),
warpRoutingEnabled: true,
namedTunnelConfig: testNamedTunnelProperties,
},
{
name: "warp routing auto- quic",
protocol: AutoSelectFlag,
expectedProtocol: QUICWarp,
hasFallback: true,
expectedFallback: HTTP2Warp,
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}, edgediscovery.ProtocolPercent{Protocol: "quic", Percentage: 100}),
warpRoutingEnabled: true,
namedTunnelConfig: testNamedTunnelProperties,
},
{
// None named tunnel can only use h2mux, so specifying an unknown protocol is not an error
name: "classic tunnel unknown protocol",
protocol: "unknown",
expectedProtocol: H2mux,
},
{
name: "named tunnel unknown protocol",
protocol: "unknown",
fetchFunc: mockFetcher(false, edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}),
namedTunnelConfig: testNamedTunnelProperties,
wantErr: true,
},
{
name: "named tunnel fetch error",
protocol: AutoSelectFlag,
fetchFunc: mockFetcher(true),
namedTunnelConfig: testNamedTunnelProperties,
expectedProtocol: HTTP2,
wantErr: false,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
selector, err := NewProtocolSelector(test.protocol, test.warpRoutingEnabled, test.namedTunnelConfig, test.fetchFunc, testNoTTL, &log)
if test.wantErr {
assert.Error(t, err, fmt.Sprintf("test %s failed", test.name))
} else {
assert.NoError(t, err, fmt.Sprintf("test %s failed", test.name))
assert.Equal(t, test.expectedProtocol, selector.Current(), fmt.Sprintf("test %s failed", test.name))
fallback, ok := selector.Fallback()
assert.Equal(t, test.hasFallback, ok, fmt.Sprintf("test %s failed", test.name))
if test.hasFallback {
assert.Equal(t, test.expectedFallback, fallback, fmt.Sprintf("test %s failed", test.name))
}
}
})
}
}
func TestAutoProtocolSelectorRefresh(t *testing.T) {
fetcher := dynamicMockFetcher{}
selector, err := NewProtocolSelector(AutoSelectFlag, noWarpRoutingEnabled, testNamedTunnelProperties, fetcher.fetch(), testNoTTL, &log)
assert.NoError(t, err)
assert.Equal(t, H2mux, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}}
assert.Equal(t, HTTP2, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 0}}
assert.Equal(t, H2mux, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}}
assert.Equal(t, HTTP2, selector.Current())
fetcher.err = fmt.Errorf("failed to fetch")
assert.Equal(t, HTTP2, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: -1}}
fetcher.err = nil
assert.Equal(t, H2mux, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 0}}
assert.Equal(t, H2mux, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "quic", Percentage: 100}}
assert.Equal(t, QUIC, selector.Current())
}
func TestHTTP2ProtocolSelectorRefresh(t *testing.T) {
fetcher := dynamicMockFetcher{}
// Since the user chooses http2 on purpose, we always stick to it.
selector, err := NewProtocolSelector("http2", noWarpRoutingEnabled, testNamedTunnelProperties, fetcher.fetch(), testNoTTL, &log)
assert.NoError(t, err)
assert.Equal(t, HTTP2, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}}
assert.Equal(t, HTTP2, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 0}}
assert.Equal(t, HTTP2, selector.Current())
fetcher.err = fmt.Errorf("failed to fetch")
assert.Equal(t, HTTP2, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: -1}}
fetcher.err = nil
assert.Equal(t, HTTP2, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 0}}
assert.Equal(t, HTTP2, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}}
assert.Equal(t, HTTP2, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: -1}}
assert.Equal(t, HTTP2, selector.Current())
}
func TestProtocolSelectorRefreshTTL(t *testing.T) {
fetcher := dynamicMockFetcher{}
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "quic", Percentage: 100}}
selector, err := NewProtocolSelector(AutoSelectFlag, noWarpRoutingEnabled, testNamedTunnelProperties, fetcher.fetch(), time.Hour, &log)
assert.NoError(t, err)
assert.Equal(t, QUIC, selector.Current())
fetcher.protocolPercents = edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "quic", Percentage: 0}}
assert.Equal(t, QUIC, selector.Current())
}