Sebastian Mark
5d24a651c2
- enhance `Connected()` method - send ping message to verify connection status - refactor reconnect code for better understanding
52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
package websocket
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import (
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"time"
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"github.com/gorilla/websocket"
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ChronoTomato "git.smsvc.net/pomodoro/ChronoTomato/pkg/models"
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)
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type Client ChronoTomato.GoTomatoClient // New websocket client
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// Connects to websocket
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func Connect(url string) Client {
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conn, _, err := websocket.DefaultDialer.Dial(url, nil)
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return Client{Conn: conn, Server: url, LastErr: err}
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}
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func (c Client) Connected() bool {
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if c.Conn == nil {
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return false
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}
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// Set a pong handler to signal when a pong is received
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c.Conn.SetPongHandler(func(s string) error {
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c.Conn.SetReadDeadline(time.Now().Add(10 * time.Second))
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return nil
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})
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// Send a ping
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err := c.Conn.WriteMessage(websocket.PingMessage, nil)
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if err != nil {
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return false
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}
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return true
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}
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// Disconnects from websocket
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func (c Client) Disconnect() {
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// Cleanly close the connection by sending a close message and then
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// waiting (with timeout) for the server to close the connection.
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if c.Connected() {
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c.Conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
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select {
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case <-Done:
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case <-time.After(time.Second):
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}
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}
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return
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}
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