77 lines
1.5 KiB
Go
77 lines
1.5 KiB
Go
// +build ignore
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package main
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import (
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"encoding/json"
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"fmt"
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"log"
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"net/url"
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"time"
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"github.com/gorilla/websocket"
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)
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func main() {
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u := url.URL{Scheme: "wss", Host: "indexer.dydx.trade", Path: "/v4/ws"}
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log.Printf("Connecting to %s", u.String())
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c, _, err := websocket.DefaultDialer.Dial(u.String(), nil)
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if err != nil {
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log.Fatal("dial:", err)
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}
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defer c.Close()
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done := make(chan struct{})
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go func() {
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defer close(done)
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for {
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_, message, err := c.ReadMessage()
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if err != nil {
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log.Println("read:", err)
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return
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}
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log.Printf("recv: %s", string(message))
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}
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}()
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// Subscribe
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sub := map[string]string{"type": "subscribe", "channel": "v4_markets"}
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subData, _ := json.Marshal(sub)
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c.WriteMessage(websocket.TextMessage, subData)
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log.Printf("sent sub: %s", string(subData))
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// Try pings
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for i := 0; i < 5; i++ {
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time.Sleep(10 * time.Second)
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// Try JSON ping
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ping := map[string]string{"type": "ping"}
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pingData, _ := json.Marshal(ping)
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err := c.WriteMessage(websocket.TextMessage, pingData)
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if err != nil {
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log.Printf("JSON ping error: %v", err)
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} else {
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log.Printf("sent JSON ping: %s", string(pingData))
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}
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// Try raw WS ping frame
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err = c.WriteMessage(websocket.PingMessage, []byte("ping"))
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if err != nil {
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log.Printf("WS ping error: %v", err)
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} else {
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log.Printf("sent WS ping frame")
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}
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}
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time.Sleep(30 * time.Second)
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fmt.Println("Done - checking if still connected")
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select {
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case <-done:
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fmt.Println("Connection closed")
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default:
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fmt.Println("Still connected!")
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}
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}
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