feat: 基本的websocket echo服务

cmd/test-client/main.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"context"
+	"log"
+
+	"github.com/coder/websocket"
+	"github.com/coder/websocket/wsjson"
+)
+
+func main() {
+	log.Println("This is a test client.")
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	c, _, err := websocket.Dial(ctx, "ws://localhost:8080/ws", nil)
+	if err != nil {
+		log.Fatal("dial error:", err)
+		return
+	}
+	defer c.CloseNow()
+
+	err = wsjson.Write(ctx, c, "Hello, WebSocket server!")
+	if err != nil {
+		log.Fatal("write error:", err)
+		return
+	}
+
+	typ, msg, err := c.Read(ctx)
+	if err != nil {
+		log.Println("read error:", err)
+		return
+	}
+
+	switch typ {
+	case websocket.MessageText:
+		log.Printf("Received text message: %s", string(msg))
+	case websocket.MessageBinary:
+		log.Printf("Received binary message: %v", msg)
+	}
+
+	c.Close(websocket.StatusNormalClosure, "test client finished")
+}