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Ensure actions happen in order.

This commit is contained in:
Juliusz Chroboczek 2021-02-15 00:35:09 +01:00
parent 9ba1037208
commit 260597d595

View file

@ -62,7 +62,7 @@ type webClient struct {
done chan struct{}
writeCh chan interface{}
writerDone chan struct{}
actionCh chan interface{}
actionCh chan struct{}
mu sync.Mutex
down map[string]*rtpDownConnection
@ -739,7 +739,7 @@ func StartClient(conn *websocket.Conn) (err error) {
c := &webClient{
id: m.Id,
actionCh: make(chan interface{}, 10),
actionCh: make(chan struct{}, 1),
done: make(chan struct{}),
}
@ -810,13 +810,6 @@ func clientLoop(c *webClient, ws *websocket.Conn) error {
}
for {
c.mu.Lock()
actions := c.actions
c.actions = nil
c.mu.Unlock()
for _, a := range actions {
handleAction(c, a)
}
select {
case m, ok := <-read:
if !ok {
@ -832,10 +825,13 @@ func clientLoop(c *webClient, ws *websocket.Conn) error {
case error:
return m
}
case a := <-c.actionCh:
err := handleAction(c, a)
if err != nil {
return err
case <-c.actionCh:
c.mu.Lock()
actions := c.actions
c.actions = nil
c.mu.Unlock()
for _, a := range actions {
handleAction(c, a)
}
case <-ticker.C:
if time.Since(readTime) > 75*time.Second {
@ -1551,16 +1547,17 @@ var ErrClientDead = errors.New("client is dead")
func (c *webClient) action(a interface{}) error {
c.mu.Lock()
defer c.mu.Unlock()
if len(c.actions) == 0 {
empty := len(c.actions) == 0
c.actions = append(c.actions, a)
if empty {
select {
case c.actionCh <- a:
case c.actionCh <- struct{}{}:
return nil
case <-c.done:
return ErrClientDead
default:
}
}
c.actions = append(c.actions, a)
return nil
}