feat: 基本广播服务

- 由Hub接收/push/{topic}的请求并解析信息体广播到对应的Client

cmd/client/main.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"context"
+	"log"
+
+	"github.com/coder/websocket"
+	"github.com/coder/websocket/wsjson"
+
+	"git.jinshen.cn/remilia/push-server/interval/protocol"
+)
+
+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 func() { _ = c.CloseNow() }()
+
+	initMsg := protocol.ControlMessage{
+		Type:   protocol.MsgInit,
+		Topics: []protocol.Topic{"news", "sports"},
+	}
+
+	log.Println("Sending init message:", initMsg)
+
+	err = wsjson.Write(ctx, c, initMsg)
+	if err != nil {
+		if websocket.CloseStatus(err) != websocket.StatusNormalClosure {
+			log.Printf("init write failed: %v", 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)
+	// }
+	go ReadBroadCastLoop(ctx, c)
+	<-ctx.Done()
+
+	_ = c.Close(websocket.StatusNormalClosure, "test client finished")
+}
+
+func ReadBroadCastLoop(ctx context.Context, c *websocket.Conn) {
+	for {
+		// var msg protocol.BroadcastMessage
+		var msg []byte
+		if err := wsjson.Read(ctx, c, &msg); err != nil {
+			log.Println("read broadcast error:", err)
+			return
+		}
+
+		log.Println("Received broadcast message:", string(msg))
+	}
+}