测试aws-sdk-android-samples / AndroidPubSub，但连接被拒绝

Question

[我正在尝试从https://github.com/awslabs/aws-sdk-android-samples/tree/master/AndroidPubSub测试aws-sdk-android-samples / AndroidPubSub /，但是单击连接后，总是收到错误消息“ a2k94wsqkar4rm-ats.iot.us-west-2.amazonaws.com /52.13.183.162（端口8883）在30000ms之后：isConnected失败：ECONNREFUSED（连接被拒绝）“

我在AWS IoT控制台上创建了设备证书并激活了它，并且还附加了如下所述的策略，

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "iot:Connect",
      "Resource": "*"
    },
    {
      "Effect": "Allow",
      "Action": [
        "iot:Publish",
        "iot:Subscribe",
        "iot:Receive"
      ],
      "Resource": "*"
    }
  ]
}

并且我尝试了两种方法来将证书和密钥安装到本地密钥存储中，并且它们都有效。

方法1，按源代码

AssetManager assetManager = getAssets();

// read cert and private key from pem file
InputStream input = assetManager.open("4ed2c76117-private.pem");
int size = input.available();
byte[] buffer = new byte[size];
input.read(buffer);
input.close();
String privateKeyPem = new String(buffer);
System.out.println(privateKeyPem);

input = assetManager.open("4ed2c76117-certificate.pem");
size = input.available();
byte[] buffer2 = new byte[size];
input.read(buffer2);
input.close();
String certPem = new String(buffer2);
System.out.println(certPem);

// store in keystore for use in MQTT client
// saved as alias "default" so a new certificate isn't
// generated each run of this application
AWSIotKeystoreHelper.saveCertificateAndPrivateKey(certificateId,
certPem,
privateKeyPem,
keystorePath, keystoreName, keystorePassword);

// load keystore from file into memory to pass on
// connection
clientKeyStore = AWSIotKeystoreHelper.getIotKeystore(certificateId,
keystorePath, keystoreName, keystorePassword);

方法2，通过终端命令，

openssl pkcs12 -export -out iot_keystore.p12 -inkey 4ed2c76117-private.pem -in 4ed2c76117-certificate.pem -name default

keytool -importkeystore -srckeystore iot_keystore.p12 -srcstoretype pkcs12 -destkeystore iot_keystore.bks -deststoretype bks --provider org.bouncycastle.jce.provider.BouncyCastleProvider -–providerpath bcprov-jdk15on-164.jar

adb push iot_keystore.bks /data/user/0/com.amazonaws.demo.androidpubsub/files/iot_keystore

任何人都可以帮助解决此问题吗？

Answer 1

[抱歉，我认为这是模拟器网络问题。正确连接网络后，此问题消失了。