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Can you hear me, Major Tom?

Push notifications server for bitcoin wallets. Processes blocks & mempool in search of subscribed onchain addresses. Built with typescript, expressjs, mariadb & openapi.

In memory of David Bowie

Installation

npm install -g dtsgenerator
dtsgen openapi.yaml > src/openapi/api.ts
npm i
npm start
npm run worker-blockprocessor
npm run worker-processmempool
npm run worker-sender

Works well on Heroku (you'll need JawsDB Maria addon)

Environment variables

Set them as env variables or put them into .env file in project root dir.

• JAWSDB_MARIA_URL for example mysql://username:password@host:port/database
• FCM_SERVER_KEY hex encoded
• APNS_PEM hex encoded
• BITCOIN_RPC for example http://username:password@host:8332
• APNS_TOPIC for example io.bluewallet.bluewallet

Getting certificates

https://dev.to/jakubkoci/react-native-push-notifications-313i

Re-issue Apple certificate when it expires (yearly)

• create certificate signing request https://help.apple.com/developer-account/#/devbfa00fef7
• create certificate & export to p12 https://help.apple.com/developer-account/#/dev82a71386a
• convert .p12 to .pem openssl pkcs12 -in push_certificates.p12 -out push_certificates.pem -nodes
• get pem hex xxd -p push_certificates.pem | tr -d '\n'
• replace APNS_PEM environment variable on production (don't forget to restart)

License

MIT