Getting java.net.UnknownHostException: Unable to resolve host "cognito-idp.ap-south-1.amazonaws.com": No address associated with hostname

[Manav122000]

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• I have searched for duplicate or closed issues and discussions.

Language and Async Model

Kotlin

Amplify Categories

Authentication

Gradle script dependencies

implementation("com.amplifyframework.ui:authenticator:1.2.0")
implementation("com.amplifyframework:core:1.28.1")
implementation("com.amplifyframework:aws-auth-cognito:1.28.1")
implementation("org.jetbrains.kotlin:kotlin-stdlib:1.8.0")
implementation("com.amplifyframework:aws-api:2.19.1")

Environment information

------------------------------------------------------------
Gradle 8.7
------------------------------------------------------------

Build time:   2024-03-22 15:52:46 UTC
Revision:     650af14d7653aa949fce5e886e685efc9cf97c10

Kotlin:       1.9.22
Groovy:       3.0.17
Ant:          Apache Ant(TM) version 1.10.13 compiled on January 4 2023
JVM:          1.8.0_131 (Azul Systems, Inc. 25.131-b11)
OS:           Mac OS X 10.16 x86_64

Please include any relevant guides or documentation you're referencing

#2542

Describe the bug

I have been getting java.net.UnknownHostException: Unable to resolve host "cognito-idp.ap-south-1.amazonaws.com": No address associated with hostname, recoverySuggestion=Sorry, we don’t have a recovery suggestion for this error. exception while trying to develop a mobile application while executing Step 6(Implement login UI).

Reproduction steps (if applicable)

No response

Code Snippet

I have been referring to this [documentation](https://docs.amplify.aws/android/start/quickstart)

Log output

// Put your logs below this line

amplifyconfiguration.json

{
  "auth": {
    "user_pool_id": "ap-south-1_************",
    "aws_region": "ap-south-1",
    "user_pool_client_id": "***************",
    "identity_pool_id": "ap-south-1:***************",
    "standard_required_attributes": [
      "email"
    ],
    "username_attributes": [
      "email"
    ],
    "user_verification_types": [
      "email"
    ],
    "password_policy": {
      "min_length": 8,
      "require_numbers": true,
      "require_lowercase": true,
      "require_uppercase": true,
      "require_symbols": true
    },
    "unauthenticated_identities_enabled": true
  },
  "data": {
    "url": "https://******************.appsync-api.ap-south-1.amazonaws.com/graphql",
    "aws_region": "ap-south-1",
    "api_key": "*************",
    "default_authorization_type": "API_KEY",
    "authorization_types": [
      "AMAZON_COGNITO_USER_POOLS",
      "AWS_IAM"
    ],
    "model_introspection": {
      "version": 1,
      "models": {
        "Todo": {
          "name": "Todo",
          "fields": {
            "id": {
              "name": "id",
              "isArray": false,
              "type": "ID",
              "isRequired": true,
              "attributes": []
            },
            "content": {
              "name": "content",
              "isArray": false,
              "type": "String",
              "isRequired": false,
              "attributes": []
            },
            "createdAt": {
              "name": "createdAt",
              "isArray": false,
              "type": "AWSDateTime",
              "isRequired": false,
              "attributes": [],
              "isReadOnly": true
            },
            "updatedAt": {
              "name": "updatedAt",
              "isArray": false,
              "type": "AWSDateTime",
              "isRequired": false,
              "attributes": [],
              "isReadOnly": true
            }
          },
          "syncable": true,
          "pluralName": "Todos",
          "attributes": [
            {
              "type": "model",
              "properties": {}
            },
            {
              "type": "auth",
              "properties": {
                "rules": [
                  {
                    "allow": "public",
                    "provider": "apiKey",
                    "operations": [
                      "create",
                      "update",
                      "delete",
                      "read"
                    ]
                  }
                ]
              }
            }
          ],
          "primaryKeyInfo": {
            "isCustomPrimaryKey": false,
            "primaryKeyFieldName": "id",
            "sortKeyFieldNames": []
          }
        }
      },
      "enums": {},
      "nonModels": {}
    }
  },
  "version": "1"
}

GraphQL Schema

// Put your schema below this line

Additional information and screenshots

No response

[tylerjroach]

Sorry if this sounds like a simple question, but does your device have internet connection? UnknownHostException will be seen when the device is completely disconnected from internet.

Another issue could be that the device time is set incorrectly, proxy is blocking url, etc.

If none of these issues are present, please reply with the amplify version being used, and code snippets to how Amplify is being configured and login code being used.

[phantumcode]

@Manav122000 Were you able to resolve your issue? A couple clarification questions, is your amplify configuration file named amplifyconfiguration.json or amplify_outputs.json? Based on the content and format, it appears to be the amplify_outputs.json, so it should be named correctly and passed into the Amplify like so Amplify.configure(AmplifyOutputs( R.raw.amplify_outputs), applicationContext)

Also, it looks like the configuration is missing two fields. Can you regenerate or download the last amplify_outputs file and make sure it's up to date and has the following fields for auth? "mfa_methods": [], "mfa_configuration": "OFF",

[github-actions]

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