google-app-engine - https ://onesignal. com/api/v1//notifications : http. DefaultTransport 和 http.DefaultClient 在 App Engine 中不可用

Question

当我尝试使用 onesignal 环境在 golang App Engine 中实现推送通知时。但是我收到错误“http.DefaultTransport 和 http.DefaultClient 在 App Engine 中不可用”。这是我的代码，

func (c *PushNotificationController) CreateNotification() {
    client := onesignal.NewClient(nil)
    client.AppKey = "MyAppKey"
    client.UserKey = "MyUserKey"
    notifID := CreateNotifications(client)
    log.Println(notifID)
}

func CreateNotifications(client *onesignal.Client) string {
    playerID := "SamplePlayerId" // valid
    notificationReq := &onesignal.NotificationRequest{
        AppID:            "MyAppKey",
        Contents:         map[string]string{"en": "English message"},
        IsIOS:            true,
        IncludePlayerIDs: []string{playerID},
    }
    if createRes, res, err := client.Notifications.Create(notificationReq){
        if err != nil {
            log.Fatal(err)
        }
        return createRes.ID
    }
    ...
}

Answer 1

在appengine上使用http，你必须使用urlfetch。

https://cloud.google.com/appengine/docs/standard/go/urlfetch/reference

即您使用的包不支持应用引擎。