111 lines
2.7 KiB
Go
111 lines
2.7 KiB
Go
package localreset
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import (
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"context"
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"net"
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"sync"
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"sync/atomic"
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"testing"
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"time"
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)
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type authorizationTestConnection struct {
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net.Conn
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closed chan struct{}
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once sync.Once
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}
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func (c *authorizationTestConnection) Close() error {
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c.once.Do(func() { close(c.closed) })
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return c.Conn.Close()
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}
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type authorizationTestListener struct {
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pending chan net.Conn
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closed chan struct{}
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once sync.Once
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}
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func (l *authorizationTestListener) Accept() (net.Conn, error) {
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select {
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case conn := <-l.pending:
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return conn, nil
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case <-l.closed:
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return nil, net.ErrClosed
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}
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}
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func (l *authorizationTestListener) Close() error {
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l.once.Do(func() { close(l.closed) })
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return nil
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}
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func (l *authorizationTestListener) Addr() net.Addr { return nil }
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// 校验原生句柄期间不能关闭连接；否则底层句柄可能已释放或被其他对象复用。
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func TestAuthorizationCannotRaceWithServerClose(t *testing.T) {
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left, right := net.Pipe()
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defer right.Close()
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conn := &authorizationTestConnection{Conn: left, closed: make(chan struct{})}
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defer conn.Close()
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listener := &authorizationTestListener{pending: make(chan net.Conn, 1), closed: make(chan struct{})}
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listener.pending <- conn
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entered := make(chan struct{})
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release := make(chan struct{})
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var releaseOnce sync.Once
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unblock := func() { releaseOnce.Do(func() { close(release) }) }
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defer unblock()
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var closedDuringAuthorization atomic.Bool
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server := newServer(listener, func(net.Conn) (Peer, error) {
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close(entered)
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<-release
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select {
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case <-conn.closed:
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closedDuringAuthorization.Store(true)
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default:
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}
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return Peer{}, ErrUnauthorized
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}, nil)
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ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
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defer cancel()
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served := make(chan error, 1)
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go func() {
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served <- server.Serve(ctx, func(context.Context, Peer) (Session, error) {
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t.Error("校验失败后仍调用了重置业务")
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return nil, ErrUnavailable
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})
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}()
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select {
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case <-entered:
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case <-ctx.Done():
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t.Fatal("身份校验未启动")
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}
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closing := make(chan struct{})
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closed := make(chan error, 1)
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go func() { close(closing); closed <- server.Close() }()
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<-closing
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select {
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case <-conn.closed:
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t.Error("身份校验尚未完成，连接却已被关闭")
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case <-time.After(50 * time.Millisecond):
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}
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unblock()
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select {
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case err := <-closed:
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if err != nil {
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t.Error(err)
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}
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case <-ctx.Done():
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t.Fatal("释放校验后服务仍无法关闭")
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}
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select {
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case err := <-served:
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if err != nil {
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t.Error(err)
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}
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case <-ctx.Done():
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t.Fatal("服务关闭没有等待连接处理完成")
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}
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if closedDuringAuthorization.Load() {
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t.Fatal("身份校验读取了已经关闭的原生连接")
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}
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}
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