Push Server

Push server for the WalletConnect V2 Protocol

Notification Providers

This list contains both supported and potentially planned providers

• FCM (API Key)
• FCM V1 (Google Service Accounts)
• APNS (Certificate Based)
• APNS (Token Based)
• Web Push

Supporting Notifications

Note Full documentation will be available soon. This is only a brief overview.

There are 3 options for receiving notifications within your wallet:

1. Use the hosted platform. Go to settings in the cloud app for a project and create a Push URL, see the documentation on Push prerequisites for more info.
2. Host this rust implementation. there is an included terraform configuration to help with this.
3. Write your own implementation that follows the spec

When using the hosted platform or self-hosting this implementation you have to provide the instance you FCM API Key or APNS certificates and then - following the FCM/APNS docs - add support for that within your wallet.

You also have to register the device with the instance of Echo Server once when the client_id is initially generated. By sending a POST request to <INSTANCE_URL>/clients as per the spec.

Multi-tenancy

Echo Server supports multi-tenancy. To enable multi-tenancy you need to specify a TENANT_DATABASE_URL which will then disable the single-tenant endpoints in favour of endpoints with a /:tenant_id prefix e.g. /:tenant_id/client/:id

Warning The TENANT_DATABASE_URL must point to a different database than the DATABASE_URL

Running locally

docker compose -f docker-compose.storage.yml up -d
just test-all

Running tests locally

yarn install
yarn integration:dev # or yarn integration:staging

Deploying infrastructure

terraform -chdir=terraform init
terraform -chdir=terraform workspace select dev/staging/prod
terraform -chdir=terraform apply  -var-file="vars/$(terraform -chdir=terraform workspace show).tfvars"

Using Images

There are two Dockerfiles, one Dockerfile is used in production by the hosted platform at WalletConnect while slim.Dockerfile is a stripped down version with no features enabled i.e. Single Tenant

Contact

If you wish to integrate Push functionality into your Wallet (only available on v2), please contact us.

Contributing

To get started with contributing to Echo Server, look at the open issues. New contributors can also look at the issues labeled with "good first issue" as they should be suitable to people who are looking at the project for the first time.

License

Copyright 2022 WalletConnect, Inc.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.