我正在尝试使用Golang websocket发布消息，并在Node客户端监听。
以下是代码的一部分：
Golang：
https://api.softlayer.com/rest/v3/SoftLayer_Virtual_Guest/getCreateObjectOptions通过这样做，我可以在Google控制台上运行以下代码时收到所有消息
func NewUpgrader() *websocket.Upgrader {
return &websocket.Upgrader{
ReadBufferSize: 1024,
WriteBufferSize: 1024,
CheckOrigin: func(r *http.Request) bool {
return true
},
}
func (s WebsocketHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
upgrader := NewUpgrader()
ws, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Errorf("websocket: could not upgrade %v", err)
fmt.Fprintf(w, "websocket: could not upgrade %v", err)
return
}
go func() {
defer ws.Close()
for msg := range s.Messages {
json, _ := json.Marshal(msg)
err := ws.WriteMessage(1, json)
if err != nil {
log.Errorf("websocket: error sending message: %v", err)
}
}
}()
我在客户端添加了相同的两行代码，现在我收到了这些错误
Golang方面：
ws = new WebSocket('ws://localhost:8080/ws')
ws.onmessage = function(msg) { console.log(JSON.parse(msg.data)) }
客户端（浏览器控制台）：
INFO[0009] 400 GET localhost:8080/ws (0 bytes) id: 77b7355412f2ffcd
ERRO[0009] websocket: could not upgrade websocket: not a websocket handshake: 'upgrade' token not found in 'Connection' header
我尝试比较这两个获取请求（Google控制台与我的客户端代码）。我发现谷歌控制台有一个标题GET http://localhost:8080/ws 400 (Bad Request)
Failed to load http://localhost:8080/ws: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:4000' is therefore not allowed access. The response had HTTP status code 400. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
Uncaught (in promise) TypeError: Failed to fetch，但标题在我的客户端代码中看起来像Connection:[Upgrade]。
不确定这是否是我无法连接这两个想法的原因？
谢谢！