Initial commit

tools/ws-client/ws-client.go

@@ -0,0 +1,87 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"net/url"
+	"os"
+	"os/signal"
+	"time"
+
+	"github.com/gorilla/websocket"
+)
+
+var (
+	addr    = flag.String("addr", "localhost:8080", "http service address")
+	streams = flag.String("streams", "eurusd.ob-inc,eurusd.kline-12h", "streams to connect to")
+	wait    = flag.Float64("wait", 2, "Time to wait between submit batch of messages")
+)
+
+func main() {
+	flag.Parse()
+	interrupt := make(chan os.Signal, 1)
+	signal.Notify(interrupt, os.Interrupt)
+
+	u := url.URL{
+		Scheme:   "ws",
+		Host:     *addr,
+		Path:     "",
+		RawQuery: "stream=" + *streams,
+	}
+	log.Printf("connecting to %s", u.String())
+
+	dialer := websocket.DefaultDialer
+	dialer.ReadBufferSize = 1
+	dialer.WriteBufferSize = 1
+
+	c, _, err := dialer.Dial(u.String(), nil)
+	if err != nil {
+		log.Fatal("dial:", err)
+	}
+	defer c.Close()
+
+	done := make(chan bool)
+
+	go func() {
+		defer close(done)
+		for {
+			_, message, err := c.ReadMessage()
+			if err != nil {
+				log.Println("read:", err)
+				return
+			}
+			log.Printf("recv: %s", message)
+		}
+	}()
+
+	ticker := time.NewTicker(time.Second)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-done:
+			return
+		// case t := <-ticker.C:
+		// 	err := c.WriteMessage(websocket.TextMessage, []byte(t.String()))
+		// 	if err != nil {
+		// 		log.Println("write:", err)
+		// 		return
+		// 	}
+		case <-interrupt:
+			log.Println("interrupt")
+
+			// Cleanly close the connection by sending a close message and then
+			// waiting (with timeout) for the server to close the connection.
+			err := c.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
+			if err != nil {
+				log.Println("write close:", err)
+				return
+			}
+			select {
+			case <-done:
+			case <-time.After(time.Second):
+			}
+			return
+		}
+	}
+}