IOT

The contract is located in the contract.sol file and the code for the script is in index.js.

Requirements

• Node.js 8+
• NPM 5+
• 2 addresses with priv keys

Usage

1. Run npm install
2. Add the following environment variables:

# EVERYTHIGN RUNS ON THE ROPSTEN NETWORK!
export CONTRACTOR_ADDRESS="" # contractor address
export CONTRACTOR_PRIVATE_KEY="" # contractor private key
export USER_ADDRESS="" # client address
export USER_PRIVATE_KEY="" # client private key
export CONTRACT_ADDRESS="" # address of published contract

3. Run npm start in two different terminals
4. Select contractor in one and client in the other.
5. Register a contractor from 0 to 10
6. After the transaction confirms, make a query from the client with the following text: FROM X TO Y where X and Y are between 0 and 10;
7. Mine the transaction with the given hash
8. Check the result of the query in client

Todo

• Fix CTRL + C issue
• Automatically mine when in contractor mode
• Calculate the cost based on the length of the return
• Add support for events in the contract
• Set up private contractors
• Handle refunds based on block number and duration specified by the client
• Add 0x to the TXIDs
• Add support for pub/priv/shared keys