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Implement ping/pong exchanges and client timeouts.
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parent
0dfa71ed71
commit
b201c3d93c
2 changed files with 31 additions and 0 deletions
23
client.go
23
client.go
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@ -707,8 +707,12 @@ func clientLoop(c *client, conn *websocket.Conn) error {
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}
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}
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readTime := time.Now()
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ticker := time.NewTicker(2 * time.Second)
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defer ticker.Stop()
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slowTicker := time.NewTicker(10 * time.Second)
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defer slowTicker.Stop()
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for {
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select {
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@ -718,6 +722,7 @@ func clientLoop(c *client, conn *websocket.Conn) error {
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}
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switch m := m.(type) {
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case clientMessage:
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readTime = time.Now()
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err := handleClientMessage(c, m)
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if err != nil {
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return err
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@ -793,6 +798,18 @@ func clientLoop(c *client, conn *websocket.Conn) error {
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}
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case <-ticker.C:
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sendRateUpdate(c)
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case <-slowTicker.C:
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if time.Since(readTime) > 90*time.Second {
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return errors.New("client is dead")
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}
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if time.Since(readTime) > 60*time.Second {
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err := c.write(clientMessage{
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Type: "ping",
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})
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if err != nil {
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return err
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}
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}
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}
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}
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}
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@ -856,6 +873,12 @@ func handleClientMessage(c *client, m clientMessage) error {
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if err != nil {
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return c.error(err)
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}
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case "pong":
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// nothing
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case "ping":
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c.write(clientMessage{
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Type: "pong",
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})
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default:
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log.Printf("unexpected message: %v", m.Type)
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return protocolError("unexpected message")
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@ -338,6 +338,14 @@ function serverConnect() {
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case 'chat':
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addToChatbox(m.id, m.username, m.value, m.me);
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break;
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case 'ping':
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send({
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type: 'pong',
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});
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break;
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case 'pong':
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/* nothing */
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break;
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case 'error':
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displayError(m.value);
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break;
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