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Abdellatif AnaflousandGitHub
c4d2db4177
the websocket listener kept its accept channel open on Close, so an Accept call that was already waiting blocked forever every other listener in pkg/util/net closes the channel and returns an error, but this one never did, so the HandleListener goroutine stayed stuck after the server closed i close the channel on Close, guard the hand off send so a late connection does not panic, and return ErrWebsocketListenerClosed which was declared but never reached Signed-off-by: Abdel <62770500+hktitof@users.noreply.github.com>
74 lines
1.8 KiB
Go
74 lines
1.8 KiB
Go
// Copyright 2026 The frp Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package net
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import (
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"errors"
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"net"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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)
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type closeStubListener struct {
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closed chan struct{}
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}
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func (l *closeStubListener) Accept() (net.Conn, error) {
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<-l.closed
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return nil, net.ErrClosed
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}
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func (l *closeStubListener) Close() error {
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select {
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case <-l.closed:
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default:
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close(l.closed)
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}
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return nil
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}
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func (l *closeStubListener) Addr() net.Addr {
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return &net.TCPAddr{IP: net.IPv4(127, 0, 0, 1)}
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}
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func TestWebsocketListenerAcceptUnblocksOnClose(t *testing.T) {
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wl := NewWebsocketListener(&closeStubListener{closed: make(chan struct{})})
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errCh := make(chan error, 1)
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go func() {
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_, err := wl.Accept()
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errCh <- err
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}()
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select {
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case err := <-errCh:
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t.Fatalf("Accept returned before the listener was closed: %v", err)
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case <-time.After(100 * time.Millisecond):
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}
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require.NoError(t, wl.Close())
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// Closing twice must stay safe and keep reporting the closed error.
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require.NoError(t, wl.Close())
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select {
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case err := <-errCh:
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require.True(t, errors.Is(err, ErrWebsocketListenerClosed), "got %v", err)
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case <-time.After(time.Second):
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t.Fatal("Accept did not return after the listener was closed")
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}
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}
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