我现在尝试通过Go建立到AWS Neptune的连接，但没有成功。我可以连接到AWS本身，但当我尝试连接到Neptune DB时，它显示"无法成功连接：请拨打传输控制协议172.31.4.48：i/o超时"。我正在使用Gremlingo模块，如下代码所示

package main

import (
    "fmt"
    "net/http"

    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/aws/credentials"
    "github.com/aws/aws-sdk-go/aws/session"
    "github.com/aws/aws-sdk-go/service/neptune"
    "github.com/gin-gonic/gin"

    gremlingo "github.com/apache/tinkerpop/gremlin-go/v3/driver"
)

func main() {

    sess, err := session.NewSession(&aws.Config{
        Region:      aws.String("us-east-id1"),
        Credentials: credentials.NewStaticCredentials("AWS-id key", "aws secret id key", ""),
    })

    if err != nil {
        fmt.Println("Couldn't create new session")
        return
    }

    neptune.New(sess)

    driverRemoteConnection, err := gremlingo.NewDriverRemoteConnection("wss://database-1-instance-1.asdasdasd.us-east-1.neptune.amazonaws.com:8182/gremlin",
        func(settings *gremlingo.DriverRemoteConnectionSettings) {
            settings.TraversalSource = "g"
        })

    if err != nil {
        fmt.Println(err)
        return
    }

    //Cleanup
    defer driverRemoteConnection.Close()

    //Creating graph traversal
    g := gremlingo.Traversal_().WithRemote(driverRemoteConnection)

    // Perform traversal
    results, err := g.V().Limit(2).ToList()
    if err != nil {
        fmt.Println(err)
        return
    }

    // print results
    for _, r := range results {
        fmt.Println(r.GetString())
    }
}

我不太确定是什么问题，所以我尝试连接到集群本身，因为它不工作，我尝试连接到Writer。非常感谢您的帮助。
最好的问候