🍕
polkadot(js) book
  • Why Polkadot?
  • Polkadot js API
    • Typescript
  • 👩‍🚀Polkadot JS API Primer
    • 0. Setup
      • Polkadot JS API template
    • 1. Network Metadata
      • WebSockets
      • Configure WebSocket URL
      • Testnets and Westend network
    • 2. Account Creation and Cryptography
      • Public-key cryptography
      • Mnemonic seed phrase
      • API : create wallet account
    • 3. Wallets and Westend tokens
      • Mnemonic to create account
      • Claim Westend tokens
    • 4. Account Balance and Planck Unit
      • API to check account balance
      • Planck unit
      • Minimum account balance
        • API : check existential deposit
        • API : check account balance
  • 5. Extrinsics or Transactions
    • Transaction fees
      • API to check transaction fees
    • Transaction errors
      • API : General Exception Handling
      • API : Exception handling when account balance is low
    • API : transfer tokens from sender to receiver account
  • 6. Blocks in a chain
    • BlockHash
      • API : find blockHash of a transaction
    • Block structure of Polkadot
      • API : Polkadot block
      • API : Extrinsics
    • API : Transaction in a block
  • 🚀What next?
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  1. Polkadot JS API Primer
  2. 1. Network Metadata

Configure WebSocket URL

PreviousWebSocketsNextTestnets and Westend network

Last updated 2 years ago

We will configure the WebSocket URL in the file below to communicate with the blockchain.

File name .env

WS_URL=

By default, it's already configured in the file/project below. Also, a list of alternative URLs are present in the comments in case the WebSocket URL in use is down.

Source

👩‍🚀
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Logopolkadot-js-recipes/.env at main · polkadotjs-developer-hub/polkadot-js-recipesGitHub