无法将websocket数据从flutter应用程序发送到go服务器

import 'package:web_socket_channel/web_socket_channel.dart';
import 'package:web_socket_channel/io.dart';

final channel = IOWebSocketChannel.connect('ws://your-go-server-url');

// 发送数据
channel.sink.add('Your message');

// 接收数据
channel.stream.listen((data) {
  print('Received: $data');
});

// 关闭连接
channel.sink.close();

package main

import (
    "log"
    "net/http"

    "github.com/gorilla/websocket"
)

var upgrader = websocket.Upgrader{
    ReadBufferSize:  1024,
    WriteBufferSize: 1024,
}

func wsHandler(w http.ResponseWriter, r *http.Request) {
    // 升级HTTP连接为WebSocket连接
    conn, err := upgrader.Upgrade(w, r, nil)
    if err != nil {
        log.Println(err)
        return
    }
    defer conn.Close()

    // 处理接收到的WebSocket消息
    for {
        _, message, err := conn.ReadMessage()
        if err != nil {
            log.Println(err)
            break
        }
        log.Printf("Received: %s\n", message)

        // 处理WebSocket消息
        // ...
    }
}

func main() {
    http.HandleFunc("/", wsHandler)
    log.Fatal(http.ListenAndServe(":8080", nil))
}