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Merge pull request #1878 from mempool/nymkappa/feature/regtest-notes

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Added regtest notes to backend README
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wiz 2022-06-14 08:32:09 +09:00 committed by GitHub
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@ -159,3 +159,58 @@ nodemon src/index.ts --ignore cache/ --ignore pools.json
```
`nodemon` should be in npm's global binary folder. If needed, you can determine where that is with `npm -g bin`.
### Regtest cheatsheets
* Useful link https://gist.github.com/System-Glitch/cb4e87bf1ae3fec9925725bb3ebe223a
* Run bitcoind for regtest
```
bitcoind -regtest -rpcport=8332
```
* If it's the first time, create a new wallet
```
bitcoin-cli -regtest -rpcport=8332 createwallet test
```
* If it's not the first time, load the wallet. This command may take a while if you have lot of utxos
```
bitcoin-cli -regtest -rpcport=8332 loadwallet test
```
* Get a new address
```
address=$(./src/bitcoin-cli -regtest -rpcport=8332 getnewaddress)
```
* Mine blocks to the previously generated new address, you need at least 101 blocks before being able to spend. This will take some time to execute (~1 min)
```
bitcoin-cli -regtest -rpcport=8332 generatetoaddress 101 $address
```
* Send 0.1 BTC at 5 sat/vB to another address
```
./src/bitcoin-cli -named -regtest -rpcport=8332 sendtoaddress address=$(./src/bitcoin-cli -regtest -rpcport=8332 getnewaddress) amount=0.1 fee_rate=5
```
* See more example of `sendtoaddress`
```
./src/bitcoin-cli sendtoaddress # will print the help
```
* Mini script to generate transactions with random TX fee-rate (between 1 to 100 sat/vB). It's slow so don't expect to use this to test mempool spam, except if you let it run for a long time, or maybe with multiple regtest node connected to each other.
```
#!/bin/bash
address=$(./src/bitcoin-cli -regtest -rpcport=8332 getnewaddress)
for i in {1..1000000}
do
./src/bitcoin-cli -regtest -rpcport=8332 -named sendtoaddress address=$address amount=0.01 fee_rate=$(jot -r 1 1 100)
done
```
* Generate block at regular interval (every 10 sec in this example)
```
watch -n 10 "./src/bitcoin-cli -regtest -rpcport=8332 generatetoaddress 1 $address"
```