https://github.com/luisvid/simple-payment-channel
simple one-way payment channel
https://github.com/luisvid/simple-payment-channel
blockchain coverage ethereum payment-channels solidity travis-ci
Last synced: 3 months ago
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simple one-way payment channel
- Host: GitHub
- URL: https://github.com/luisvid/simple-payment-channel
- Owner: luisvid
- Created: 2019-04-15T13:47:24.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2019-04-15T15:34:02.000Z (about 6 years ago)
- Last Synced: 2025-01-12T05:12:51.483Z (4 months ago)
- Topics: blockchain, coverage, ethereum, payment-channels, solidity, travis-ci
- Language: JavaScript
- Size: 112 KB
- Stars: 1
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
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# simple one-way payment channel
## Based on these tutorials:
- https://medium.com/blockchannel/counterfactual-for-dummies-part-1-8ff164f78540
- https://programtheblockchain.com/posts/2018/02/23/writing-a-simple-payment-channel
About the tests:
- https://truffleframework.com/docs/truffle/testing/writing-tests-in-javascript
## Running the tests
```
$ npm i
$ ganache-cli -m "nose phone clip fee agent crop decorate spell album february oppose anxiety"
$ npm run test
```
## Some issues I found and how I solved them
### Issues with new versión 0.5.0
If you're using ^v5.0.0 (including beta releases), you can bring your own compiler by adding this in your truffle config file (in this example it's set to 0.4.25):
```
module.exports = {
...
compilers: {
solc: {
version: "0.4.25",
},
},
...
};
```
You can query the list of available compiler versions by running this:
```
truffle compile --list
```
### Error: Data location must be "storage" or "memory"
```
SimplePaymentChannel.sol:120:49: TypeError: Data location must be "storage" or "memory" for parameter in function, but none was given.
function isValidSignature(uint256 _balance, bytes _signedMessage)
^------------------^
```
- https://ethereum.stackexchange.com/questions/63294/typeerror-data-location-must-be-storage-or-memory-for-parameter-in-function
### TypeError: Member "transfer" not found or not visible after argument-dependent lookup in address.
This is due to some breaking changes in Solidity version 0.5. Namely that an address has to be marked as payable - otherwise it won't have the transfer function. More info here: https://solidity.readthedocs.io/en/v0.5.0/050-breaking-changes.html#explicitness-requirements
So just change you function parameters from address _payeeAddr to address payable _payeeAddr and it will work just fine.
### Yet not resolved: Truffle shows no output when running tests
- https:// ethereum.stackexchange.com/questions/66629/truffle-does-nothing-and-shows-no-output-when-running-tests
Important: breaking change for versions >= 0.5.0
### Yet not resolved: solidity-coverage
solidity-coverage requires compilation with solc >= 0.4.21. We're prefixing our own instrumentation events with the emit keyword to reduce warnings volume when running the tool.