xfy
f1dd8cbeb0
Batch 1 - Crash/data corruption: - Add nil/empty config guards in server and app - Protect against fasthttp buffer mutation in logging - Ensure mimeutil falls back before caching empty MIME - Make proxy health checker and resolver tolerate nil cfg - Prevent Lua EMERG/ALERT/CRIT log levels from killing process Batch 2 - Concurrency/race conditions: - Add focused race tests for compression pool, ssl/ocsp, server proxies slice, Lua timer cancel, and TCP socket connect - Fix Lua timer active race and socket ConnectAsync race Batch 3 - Resource leaks/functional damage: - Track and stop rate limiter cleanup goroutines on shutdown - Add tests for proxy connection count leaks, server pool deadlock, Linux sendfile integrity, WebSocket frame data loss, stream UDP stop deadlock, and upstream name mismatch - Fix stream ListenTCP/upstream lookup and UDP shutdown Batch 4 - High severity technical debt: - Add nil guard in security headers middleware - Validate sliding window divisor and add tests - Protect static handler fields with existing RWMutex - Avoid mutating live HostClient.Addr on DNS updates - Fix slow start Start/Stop and resolver restart - Initialize variable fallback context maps - Add tests for request_id/time_local and logging file handle close Also: - Relax integration variable performance threshold under race detector - Update benchmark plan docs for new stream ListenTCP signature Verification: - make test: pass - go test -race -count=1 ./internal/...: pass - make lint: 0 issues - make build: success
905 lines
22 KiB
Go
905 lines
22 KiB
Go
// Package stream 提供服务器相关函数的覆盖测试。
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//
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// 该文件测试以下未覆盖的方法：
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// - ListenTCP：TCP 监听
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// - Start：服务器启动
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// - getOrCreateSession：UDP 会话创建
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// - handleBackendResponse：UDP 后端响应处理
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// - serve：UDP 服务循环
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// - startCleanupTicker：UDP 过期清理 ticker
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//
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// 作者：xfy
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package stream
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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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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestListenTCP_Success(t *testing.T) {
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t.Parallel()
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s := NewServer()
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err := s.ListenTCP("127.0.0.1:0", "")
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require.NoError(t, err)
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s.mu.RLock()
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require.Len(t, s.listeners, 1)
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s.mu.RUnlock()
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s.mu.Lock()
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for _, ln := range s.listeners {
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_ = ln.Close()
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}
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s.mu.Unlock()
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}
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func TestListenTCP_InvalidAddress(t *testing.T) {
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t.Parallel()
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s := NewServer()
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err := s.ListenTCP("256.256.256.256:99999", "")
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assert.Error(t, err)
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s.mu.RLock()
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assert.Empty(t, s.listeners)
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s.mu.RUnlock()
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}
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func TestStart_NoListeners(t *testing.T) {
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t.Parallel()
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s := NewServer()
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err := s.Start()
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require.NoError(t, err)
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assert.True(t, s.running.Load())
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s.Stop()
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}
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func TestStart_WithTCPListeners(t *testing.T) {
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s := NewServer()
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targets := []TargetSpec{
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{Addr: "127.0.0.1:0", Weight: 1},
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}
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_ = s.AddUpstream("test", targets, "round_robin", HealthCheckSpec{})
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err := s.ListenTCP("127.0.0.1:0", "")
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require.NoError(t, err)
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err = s.Start()
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require.NoError(t, err)
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assert.True(t, s.running.Load())
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s.Stop()
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}
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func TestStart_AcceptConnections(t *testing.T) {
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s := NewServer()
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backendLn, err := net.Listen("tcp", "127.0.0.1:0")
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require.NoError(t, err)
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go func() {
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conn, acceptErr := backendLn.Accept()
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if acceptErr != nil {
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return
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}
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defer conn.Close()
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_, _ = io.Copy(conn, conn)
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}()
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targets := []TargetSpec{
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{Addr: backendLn.Addr().String(), Weight: 1},
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}
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_ = s.AddUpstream("test", targets, "round_robin", HealthCheckSpec{})
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s.upstreams["test"].targets[0].healthy.Store(true)
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ln, err := net.Listen("tcp", "127.0.0.1:0")
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require.NoError(t, err)
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proxyAddr := ln.Addr().String()
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s.mu.Lock()
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s.listeners["test"] = ln
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s.mu.Unlock()
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err = s.Start()
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require.NoError(t, err)
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clientConn, err := net.DialTimeout("tcp", proxyAddr, 2*time.Second)
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require.NoError(t, err)
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testData := []byte("hello stream proxy")
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_, err = clientConn.Write(testData)
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require.NoError(t, err)
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buf := make([]byte, len(testData))
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_ = clientConn.SetReadDeadline(time.Now().Add(3 * time.Second))
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n, err := clientConn.Read(buf)
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require.NoError(t, err)
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assert.Equal(t, testData, buf[:n])
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_ = clientConn.Close()
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s.Stop()
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_ = backendLn.Close()
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}
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func TestNewUDPServer_DefaultTimeout(t *testing.T) {
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t.Parallel()
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udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
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require.NoError(t, err)
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conn, err := net.ListenUDP("udp", udpAddr)
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require.NoError(t, err)
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defer conn.Close()
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upstream := &Upstream{
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targets: []*Target{{addr: "127.0.0.1:19099"}},
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balancer: newRoundRobin(),
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}
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srv := newUDPServer(conn, upstream, 0)
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assert.Equal(t, 60*time.Second, srv.timeout)
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srv2 := newUDPServer(conn, upstream, -1*time.Second)
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assert.Equal(t, 60*time.Second, srv2.timeout)
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}
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func TestNewUDPServer_CustomTimeout(t *testing.T) {
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t.Parallel()
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udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
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require.NoError(t, err)
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conn, err := net.ListenUDP("udp", udpAddr)
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require.NoError(t, err)
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defer conn.Close()
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upstream := &Upstream{
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targets: []*Target{{addr: "127.0.0.1:19099"}},
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balancer: newRoundRobin(),
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}
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srv := newUDPServer(conn, upstream, 45*time.Second)
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assert.Equal(t, 45*time.Second, srv.timeout)
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}
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func TestSessionKey(t *testing.T) {
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t.Parallel()
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addr1, err := net.ResolveUDPAddr("udp", "192.168.1.1:12345")
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require.NoError(t, err)
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key := sessionKey(addr1)
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assert.Equal(t, "192.168.1.1:12345", key)
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addr2, err := net.ResolveUDPAddr("udp", "[::1]:54321")
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require.NoError(t, err)
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key2 := sessionKey(addr2)
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assert.Contains(t, key2, "54321")
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}
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func TestGetSession_NotExist(t *testing.T) {
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t.Parallel()
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udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
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require.NoError(t, err)
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conn, err := net.ListenUDP("udp", udpAddr)
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require.NoError(t, err)
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defer conn.Close()
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upstream := &Upstream{
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targets: []*Target{{addr: "127.0.0.1:19100"}},
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balancer: newRoundRobin(),
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}
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srv := newUDPServer(conn, upstream, time.Minute)
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clientAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:11111")
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require.NoError(t, err)
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session := srv.getSession(clientAddr)
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assert.Nil(t, session)
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}
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func TestGetSession_Existing(t *testing.T) {
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t.Parallel()
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udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
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require.NoError(t, err)
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conn, err := net.ListenUDP("udp", udpAddr)
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require.NoError(t, err)
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defer conn.Close()
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upstream := &Upstream{
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targets: []*Target{{addr: "127.0.0.1:19101"}},
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balancer: newRoundRobin(),
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}
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srv := newUDPServer(conn, upstream, time.Minute)
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clientAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:22222")
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require.NoError(t, err)
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oldTime := time.Now().Add(-10 * time.Second)
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testSession := &udpSession{
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clientAddr: clientAddr,
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lastActive: oldTime,
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srv: srv,
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}
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srv.sessions[sessionKey(clientAddr)] = testSession
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session := srv.getSession(clientAddr)
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require.NotNil(t, session)
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session.mu.RLock()
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newActive := session.lastActive
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session.mu.RUnlock()
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assert.True(t, newActive.After(oldTime))
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}
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func TestRemoveSession(t *testing.T) {
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t.Parallel()
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udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
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require.NoError(t, err)
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conn, err := net.ListenUDP("udp", udpAddr)
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require.NoError(t, err)
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defer conn.Close()
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upstream := &Upstream{
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targets: []*Target{{addr: "127.0.0.1:19102"}},
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balancer: newRoundRobin(),
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}
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srv := newUDPServer(conn, upstream, time.Minute)
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clientAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:33333")
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require.NoError(t, err)
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targetUDPAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
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require.NoError(t, err)
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targetConn, err := net.ListenUDP("udp", targetUDPAddr)
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require.NoError(t, err)
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defer targetConn.Close()
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testSession := &udpSession{
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clientAddr: clientAddr,
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targetConn: targetConn,
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lastActive: time.Now(),
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srv: srv,
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target: &Target{addr: "127.0.0.1:19102"},
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}
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srv.sessions[sessionKey(clientAddr)] = testSession
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srv.removeSession(clientAddr)
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srv.mu.RLock()
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_, exists := srv.sessions[sessionKey(clientAddr)]
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srv.mu.RUnlock()
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assert.False(t, exists)
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}
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func TestRemoveSession_NotExist(t *testing.T) {
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t.Parallel()
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udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
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require.NoError(t, err)
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conn, err := net.ListenUDP("udp", udpAddr)
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require.NoError(t, err)
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defer conn.Close()
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upstream := &Upstream{
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targets: []*Target{{addr: "127.0.0.1:19103"}},
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balancer: newRoundRobin(),
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}
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srv := newUDPServer(conn, upstream, time.Minute)
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clientAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:44444")
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require.NoError(t, err)
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srv.removeSession(clientAddr)
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srv.mu.RLock()
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assert.Empty(t, srv.sessions)
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srv.mu.RUnlock()
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}
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||
|
||
func TestCleanupExpiredSessions_RemovesExpired(t *testing.T) {
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t.Parallel()
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||
|
||
udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
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||
require.NoError(t, err)
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conn, err := net.ListenUDP("udp", udpAddr)
|
||
require.NoError(t, err)
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||
defer conn.Close()
|
||
|
||
upstream := &Upstream{
|
||
targets: []*Target{{addr: "127.0.0.1:19104"}},
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||
balancer: newRoundRobin(),
|
||
}
|
||
srv := newUDPServer(conn, upstream, 100*time.Millisecond)
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||
|
||
expiredAddr, _ := net.ResolveUDPAddr("udp", "127.0.0.1:55555")
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||
expiredSession := &udpSession{
|
||
clientAddr: expiredAddr,
|
||
lastActive: time.Now().Add(-1 * time.Hour),
|
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srv: srv,
|
||
}
|
||
srv.sessions[sessionKey(expiredAddr)] = expiredSession
|
||
|
||
activeAddr, _ := net.ResolveUDPAddr("udp", "127.0.0.1:55556")
|
||
activeSession := &udpSession{
|
||
clientAddr: activeAddr,
|
||
lastActive: time.Now(),
|
||
srv: srv,
|
||
}
|
||
srv.sessions[sessionKey(activeAddr)] = activeSession
|
||
|
||
srv.cleanupExpiredSessions()
|
||
|
||
srv.mu.RLock()
|
||
assert.Len(t, srv.sessions, 1)
|
||
_, hasActive := srv.sessions[sessionKey(activeAddr)]
|
||
srv.mu.RUnlock()
|
||
assert.True(t, hasActive)
|
||
}
|
||
|
||
func TestCleanupExpiredSessions_AllExpired(t *testing.T) {
|
||
t.Parallel()
|
||
|
||
udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
conn, err := net.ListenUDP("udp", udpAddr)
|
||
require.NoError(t, err)
|
||
defer conn.Close()
|
||
|
||
upstream := &Upstream{
|
||
targets: []*Target{{addr: "127.0.0.1:19105"}},
|
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balancer: newRoundRobin(),
|
||
}
|
||
srv := newUDPServer(conn, upstream, 1*time.Millisecond)
|
||
|
||
for i := range 5 {
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addr, _ := net.ResolveUDPAddr("udp", fmt.Sprintf("127.0.0.1:%d", 60000+i))
|
||
sess := &udpSession{
|
||
clientAddr: addr,
|
||
lastActive: time.Now().Add(-1 * time.Hour),
|
||
srv: srv,
|
||
}
|
||
srv.sessions[sessionKey(addr)] = sess
|
||
}
|
||
|
||
srv.cleanupExpiredSessions()
|
||
|
||
srv.mu.RLock()
|
||
assert.Empty(t, srv.sessions)
|
||
srv.mu.RUnlock()
|
||
}
|
||
|
||
func TestGetOrCreateSession_NoHealthyTargets(t *testing.T) {
|
||
t.Parallel()
|
||
|
||
udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
conn, err := net.ListenUDP("udp", udpAddr)
|
||
require.NoError(t, err)
|
||
defer conn.Close()
|
||
|
||
upstream := &Upstream{
|
||
targets: []*Target{{addr: "127.0.0.1:19106"}},
|
||
balancer: newRoundRobin(),
|
||
}
|
||
srv := newUDPServer(conn, upstream, time.Minute)
|
||
|
||
clientAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:51111")
|
||
require.NoError(t, err)
|
||
|
||
session, err := srv.getOrCreateSession(clientAddr)
|
||
assert.Nil(t, session)
|
||
assert.Error(t, err)
|
||
}
|
||
|
||
func TestGetOrCreateSession_ExistingSession(t *testing.T) {
|
||
t.Parallel()
|
||
|
||
udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
conn, err := net.ListenUDP("udp", udpAddr)
|
||
require.NoError(t, err)
|
||
defer conn.Close()
|
||
|
||
upstream := &Upstream{
|
||
targets: []*Target{{addr: "127.0.0.1:19107"}},
|
||
balancer: newRoundRobin(),
|
||
}
|
||
upstream.targets[0].healthy.Store(true)
|
||
srv := newUDPServer(conn, upstream, time.Minute)
|
||
|
||
clientAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:52222")
|
||
require.NoError(t, err)
|
||
|
||
existingSession := &udpSession{
|
||
clientAddr: clientAddr,
|
||
lastActive: time.Now(),
|
||
srv: srv,
|
||
}
|
||
srv.sessions[sessionKey(clientAddr)] = existingSession
|
||
|
||
session, err := srv.getOrCreateSession(clientAddr)
|
||
require.NoError(t, err)
|
||
assert.Equal(t, existingSession, session)
|
||
}
|
||
|
||
func TestGetOrCreateSession_NewSession(t *testing.T) {
|
||
backendAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
backendConn, err := net.ListenUDP("udp", backendAddr)
|
||
require.NoError(t, err)
|
||
defer backendConn.Close()
|
||
|
||
proxyAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
proxyConn, err := net.ListenUDP("udp", proxyAddr)
|
||
require.NoError(t, err)
|
||
defer proxyConn.Close()
|
||
|
||
upstream := &Upstream{
|
||
targets: []*Target{{addr: backendConn.LocalAddr().String()}},
|
||
balancer: newRoundRobin(),
|
||
}
|
||
upstream.targets[0].healthy.Store(true)
|
||
srv := newUDPServer(proxyConn, upstream, time.Minute)
|
||
|
||
clientAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:53333")
|
||
require.NoError(t, err)
|
||
|
||
session, err := srv.getOrCreateSession(clientAddr)
|
||
require.NoError(t, err)
|
||
require.NotNil(t, session)
|
||
assert.Equal(t, clientAddr.String(), session.clientAddr.String())
|
||
assert.NotNil(t, session.targetConn)
|
||
|
||
srv.mu.RLock()
|
||
stored, exists := srv.sessions[sessionKey(clientAddr)]
|
||
srv.mu.RUnlock()
|
||
assert.True(t, exists)
|
||
assert.Equal(t, session, stored)
|
||
|
||
srv.removeSession(clientAddr)
|
||
srv.wg.Wait()
|
||
}
|
||
|
||
func TestHandleBackendResponse_Timeout(t *testing.T) {
|
||
proxyAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
proxyConn, err := net.ListenUDP("udp", proxyAddr)
|
||
require.NoError(t, err)
|
||
defer proxyConn.Close()
|
||
|
||
upstream := &Upstream{
|
||
targets: []*Target{{addr: "127.0.0.1:19108"}},
|
||
balancer: newRoundRobin(),
|
||
}
|
||
upstream.targets[0].healthy.Store(true)
|
||
srv := newUDPServer(proxyConn, upstream, 50*time.Millisecond)
|
||
|
||
backendAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
backendConn, err := net.ListenUDP("udp", backendAddr)
|
||
require.NoError(t, err)
|
||
defer backendConn.Close()
|
||
|
||
clientAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:54444")
|
||
require.NoError(t, err)
|
||
|
||
session := &udpSession{
|
||
clientAddr: clientAddr,
|
||
targetConn: backendConn,
|
||
target: upstream.targets[0],
|
||
lastActive: time.Now().Add(-1 * time.Hour),
|
||
srv: srv,
|
||
}
|
||
|
||
srv.mu.Lock()
|
||
srv.sessions[sessionKey(clientAddr)] = session
|
||
srv.mu.Unlock()
|
||
|
||
srv.wg.Add(1)
|
||
go session.handleBackendResponse()
|
||
|
||
done := make(chan struct{})
|
||
go func() {
|
||
srv.wg.Wait()
|
||
close(done)
|
||
}()
|
||
|
||
select {
|
||
case <-done:
|
||
srv.mu.RLock()
|
||
_, exists := srv.sessions[sessionKey(clientAddr)]
|
||
srv.mu.RUnlock()
|
||
assert.False(t, exists)
|
||
case <-time.After(3 * time.Second):
|
||
t.Fatal("handleBackendResponse did not finish in time")
|
||
}
|
||
}
|
||
|
||
func TestServe_ReceivesAndForwards(t *testing.T) {
|
||
backendAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
backendConn, err := net.ListenUDP("udp", backendAddr)
|
||
require.NoError(t, err)
|
||
defer backendConn.Close()
|
||
|
||
go func() {
|
||
buf := make([]byte, 65535)
|
||
for {
|
||
n, addr, readErr := backendConn.ReadFromUDP(buf)
|
||
if readErr != nil {
|
||
return
|
||
}
|
||
_, _ = backendConn.WriteToUDP(buf[:n], addr)
|
||
}
|
||
}()
|
||
|
||
proxyAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
proxyConn, err := net.ListenUDP("udp", proxyAddr)
|
||
require.NoError(t, err)
|
||
defer proxyConn.Close()
|
||
|
||
upstream := &Upstream{
|
||
targets: []*Target{{addr: backendConn.LocalAddr().String()}},
|
||
balancer: newRoundRobin(),
|
||
}
|
||
upstream.targets[0].healthy.Store(true)
|
||
srv := newUDPServer(proxyConn, upstream, 10*time.Second)
|
||
|
||
srv.wg.Add(1)
|
||
go func() {
|
||
defer srv.wg.Done()
|
||
srv.serve()
|
||
}()
|
||
srv.wg.Add(1)
|
||
go func() {
|
||
defer srv.wg.Done()
|
||
srv.startCleanupTicker()
|
||
}()
|
||
|
||
clientConn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 0})
|
||
require.NoError(t, err)
|
||
defer clientConn.Close()
|
||
|
||
testData := []byte("test udp stream")
|
||
proxyTarget := &net.UDPAddr{
|
||
IP: net.ParseIP("127.0.0.1"),
|
||
Port: proxyConn.LocalAddr().(*net.UDPAddr).Port,
|
||
}
|
||
_, err = clientConn.WriteToUDP(testData, proxyTarget)
|
||
require.NoError(t, err)
|
||
|
||
buf := make([]byte, 65535)
|
||
_ = clientConn.SetReadDeadline(time.Now().Add(3 * time.Second))
|
||
n, _, err := clientConn.ReadFromUDP(buf)
|
||
require.NoError(t, err)
|
||
assert.Equal(t, testData, buf[:n])
|
||
|
||
close(srv.stopCh)
|
||
srv.running.Store(false)
|
||
srv.wg.Wait()
|
||
}
|
||
|
||
func TestStartCleanupTicker_StopsOnSignal(t *testing.T) {
|
||
t.Parallel()
|
||
|
||
udpAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
conn, err := net.ListenUDP("udp", udpAddr)
|
||
require.NoError(t, err)
|
||
defer conn.Close()
|
||
|
||
upstream := &Upstream{
|
||
targets: []*Target{{addr: "127.0.0.1:19110"}},
|
||
balancer: newRoundRobin(),
|
||
}
|
||
srv := newUDPServer(conn, upstream, time.Minute)
|
||
|
||
done := make(chan struct{})
|
||
go func() {
|
||
srv.startCleanupTicker()
|
||
close(done)
|
||
}()
|
||
|
||
time.Sleep(50 * time.Millisecond)
|
||
close(srv.stopCh)
|
||
|
||
select {
|
||
case <-done:
|
||
case <-time.After(2 * time.Second):
|
||
t.Fatal("startCleanupTicker did not stop after signal")
|
||
}
|
||
}
|
||
|
||
func TestHandleConnection_MultipleUpstreams(t *testing.T) {
|
||
s := NewServer()
|
||
|
||
backend1, err := net.Listen("tcp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
backend2, err := net.Listen("tcp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
defer backend1.Close()
|
||
defer backend2.Close()
|
||
|
||
go func() {
|
||
conn, err := backend1.Accept()
|
||
if err != nil {
|
||
return
|
||
}
|
||
defer conn.Close()
|
||
buf := make([]byte, 1024)
|
||
n, _ := conn.Read(buf)
|
||
_, _ = conn.Write(append([]byte("backend1:"), buf[:n]...))
|
||
}()
|
||
|
||
go func() {
|
||
conn, err := backend2.Accept()
|
||
if err != nil {
|
||
return
|
||
}
|
||
defer conn.Close()
|
||
buf := make([]byte, 1024)
|
||
n, _ := conn.Read(buf)
|
||
_, _ = conn.Write(append([]byte("backend2:"), buf[:n]...))
|
||
}()
|
||
|
||
_ = s.AddUpstream("upstream1", []TargetSpec{{Addr: backend1.Addr().String()}}, "round_robin", HealthCheckSpec{})
|
||
_ = s.AddUpstream("upstream2", []TargetSpec{{Addr: backend2.Addr().String()}}, "round_robin", HealthCheckSpec{})
|
||
s.upstreams["upstream1"].targets[0].healthy.Store(true)
|
||
s.upstreams["upstream2"].targets[0].healthy.Store(true)
|
||
|
||
ln1, err := net.Listen("tcp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
ln2, err := net.Listen("tcp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
|
||
s.mu.Lock()
|
||
s.listeners["upstream1"] = ln1
|
||
s.listeners["upstream2"] = ln2
|
||
s.mu.Unlock()
|
||
|
||
err = s.Start()
|
||
require.NoError(t, err)
|
||
defer s.Stop()
|
||
|
||
conn1, err := net.DialTimeout("tcp", ln1.Addr().String(), 2*time.Second)
|
||
require.NoError(t, err)
|
||
defer conn1.Close()
|
||
|
||
_, err = conn1.Write([]byte("hello"))
|
||
require.NoError(t, err)
|
||
|
||
buf := make([]byte, 1024)
|
||
_ = conn1.SetReadDeadline(time.Now().Add(2 * time.Second))
|
||
n, err := conn1.Read(buf)
|
||
require.NoError(t, err)
|
||
assert.True(t, bytes.HasPrefix(buf[:n], []byte("backend1:")), "should route to backend1, got: %s", string(buf[:n]))
|
||
|
||
conn2, err := net.DialTimeout("tcp", ln2.Addr().String(), 2*time.Second)
|
||
require.NoError(t, err)
|
||
defer conn2.Close()
|
||
|
||
_, err = conn2.Write([]byte("world"))
|
||
require.NoError(t, err)
|
||
|
||
_ = conn2.SetReadDeadline(time.Now().Add(2 * time.Second))
|
||
n, err = conn2.Read(buf)
|
||
require.NoError(t, err)
|
||
assert.True(t, bytes.HasPrefix(buf[:n], []byte("backend2:")), "should route to backend2, got: %s", string(buf[:n]))
|
||
}
|
||
|
||
func TestStop(t *testing.T) {
|
||
s := NewServer()
|
||
|
||
backendLn, err := net.Listen("tcp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
defer backendLn.Close()
|
||
|
||
go func() {
|
||
for {
|
||
conn, err := backendLn.Accept()
|
||
if err != nil {
|
||
return
|
||
}
|
||
_, _ = io.Copy(conn, conn)
|
||
_ = conn.Close()
|
||
}
|
||
}()
|
||
|
||
_ = s.AddUpstream("test", []TargetSpec{{Addr: backendLn.Addr().String()}}, "round_robin", HealthCheckSpec{})
|
||
s.upstreams["test"].targets[0].healthy.Store(true)
|
||
|
||
ln, err := net.Listen("tcp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
s.mu.Lock()
|
||
s.listeners["test"] = ln
|
||
s.mu.Unlock()
|
||
|
||
err = s.Start()
|
||
require.NoError(t, err)
|
||
|
||
clientConn, err := net.DialTimeout("tcp", ln.Addr().String(), 2*time.Second)
|
||
require.NoError(t, err)
|
||
_ = clientConn.Close()
|
||
|
||
s.Stop()
|
||
|
||
assert.False(t, s.running.Load())
|
||
|
||
s.mu.RLock()
|
||
assert.Empty(t, s.listeners)
|
||
s.mu.RUnlock()
|
||
}
|
||
|
||
func TestStop_Idempotent(t *testing.T) {
|
||
s := NewServer()
|
||
s.Stop()
|
||
s.Stop()
|
||
}
|
||
|
||
func TestStart_DoubleStart(t *testing.T) {
|
||
s := NewServer()
|
||
err := s.Start()
|
||
require.NoError(t, err)
|
||
err = s.Start()
|
||
assert.Error(t, err)
|
||
s.Stop()
|
||
}
|
||
|
||
// TestListenTCP_AssociatesUpstream 验证 ListenTCP 会建立 listener->upstream 映射。
|
||
func TestListenTCP_AssociatesUpstream(t *testing.T) {
|
||
t.Parallel()
|
||
|
||
s := NewServer()
|
||
|
||
_ = s.AddUpstream("test", []TargetSpec{{Addr: "127.0.0.1:8001", Weight: 1}}, "round_robin", HealthCheckSpec{})
|
||
|
||
err := s.ListenTCP("127.0.0.1:0", "test")
|
||
require.NoError(t, err)
|
||
|
||
s.mu.RLock()
|
||
defer s.mu.RUnlock()
|
||
|
||
require.Len(t, s.listeners, 1)
|
||
require.Len(t, s.listenerUpstreams, 1)
|
||
for addr, up := range s.listenerUpstreams {
|
||
assert.NotNil(t, up, "addr=%s", addr)
|
||
assert.Equal(t, "test", up.name)
|
||
}
|
||
}
|
||
|
||
// TestListenTCP_UnknownUpstream 验证为不存在的上游建立映射时不会 panic。
|
||
func TestListenTCP_UnknownUpstream(t *testing.T) {
|
||
t.Parallel()
|
||
|
||
s := NewServer()
|
||
|
||
err := s.ListenTCP("127.0.0.1:0", "missing")
|
||
require.NoError(t, err)
|
||
|
||
s.mu.RLock()
|
||
defer s.mu.RUnlock()
|
||
|
||
require.Len(t, s.listenerUpstreams, 1)
|
||
for _, up := range s.listenerUpstreams {
|
||
assert.Nil(t, up)
|
||
}
|
||
}
|
||
|
||
// TestStart_TCPForwardsViaListenerUpstreamMapping 验证 TCP stream proxy 通过 listener->upstream 映射转发到后端。
|
||
func TestStart_TCPForwardsViaListenerUpstreamMapping(t *testing.T) {
|
||
s := NewServer()
|
||
|
||
backendLn, err := net.Listen("tcp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
defer backendLn.Close()
|
||
|
||
go func() {
|
||
for {
|
||
conn, acceptErr := backendLn.Accept()
|
||
if acceptErr != nil {
|
||
return
|
||
}
|
||
go func(c net.Conn) {
|
||
defer c.Close()
|
||
buf := make([]byte, 1024)
|
||
n, _ := c.Read(buf)
|
||
_, _ = c.Write(append([]byte("backend:"), buf[:n]...))
|
||
}(conn)
|
||
}
|
||
}()
|
||
|
||
_ = s.AddUpstream("test", []TargetSpec{{Addr: backendLn.Addr().String(), Weight: 1}}, "round_robin", HealthCheckSpec{})
|
||
s.upstreams["test"].targets[0].healthy.Store(true)
|
||
|
||
err = s.ListenTCP("127.0.0.1:0", "test")
|
||
require.NoError(t, err)
|
||
|
||
s.mu.RLock()
|
||
var proxyAddr string
|
||
for _, ln := range s.listeners {
|
||
proxyAddr = ln.Addr().String()
|
||
}
|
||
s.mu.RUnlock()
|
||
|
||
err = s.Start()
|
||
require.NoError(t, err)
|
||
defer s.Stop()
|
||
|
||
clientConn, err := net.DialTimeout("tcp", proxyAddr, 2*time.Second)
|
||
require.NoError(t, err)
|
||
defer clientConn.Close()
|
||
|
||
testData := []byte("hello mapping")
|
||
_, err = clientConn.Write(testData)
|
||
require.NoError(t, err)
|
||
|
||
_ = clientConn.SetReadDeadline(time.Now().Add(3 * time.Second))
|
||
buf := make([]byte, 1024)
|
||
n, err := clientConn.Read(buf)
|
||
require.NoError(t, err)
|
||
assert.Equal(t, append([]byte("backend:"), testData...), buf[:n])
|
||
}
|
||
|
||
// TestStop_UDP 验证 UDP stream server 的 Stop 能正常完成，不会死锁。
|
||
func TestStop_UDP(t *testing.T) {
|
||
s := NewServer()
|
||
|
||
backendAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||
require.NoError(t, err)
|
||
backendConn, err := net.ListenUDP("udp", backendAddr)
|
||
require.NoError(t, err)
|
||
defer backendConn.Close()
|
||
|
||
go func() {
|
||
buf := make([]byte, 65535)
|
||
for {
|
||
n, addr, readErr := backendConn.ReadFromUDP(buf)
|
||
if readErr != nil {
|
||
return
|
||
}
|
||
_, _ = backendConn.WriteToUDP(buf[:n], addr)
|
||
}
|
||
}()
|
||
|
||
_ = s.AddUpstream("udp-test", []TargetSpec{{Addr: backendConn.LocalAddr().String(), Weight: 1}}, "round_robin", HealthCheckSpec{})
|
||
|
||
err = s.ListenUDP("127.0.0.1:0", "udp-test", 100*time.Millisecond)
|
||
require.NoError(t, err)
|
||
|
||
err = s.Start()
|
||
require.NoError(t, err)
|
||
|
||
done := make(chan struct{})
|
||
go func() {
|
||
s.Stop()
|
||
close(done)
|
||
}()
|
||
|
||
select {
|
||
case <-done:
|
||
case <-time.After(3 * time.Second):
|
||
t.Fatal("UDP server Stop did not complete in time")
|
||
}
|
||
|
||
assert.False(t, s.running.Load())
|
||
}
|