Add Support for Testnet

[blockchain]

Add Support for Testnet

[lzhuor]

Thank you @plondon!

The workaround works for me. I will take a look at the code snippet to understand the root cause.

Btw, this react + redux (and saga) front-end project is awesome. I learned quite a few good points such as using monorepo, using ramda, using lense etc. Lesson learned.

[plondon]

Hi at @lzhuor thank you so much for using the wallet and contributing an issue!

The v4 wallet does not yet support testnet, we've looked into it a little bit but have not had sufficient time to fully implement it. I believe the crux of the issue is here: https://github.com/blockchain/blockchain-wallet-v4-frontend/blame/development/packages/blockchain-wallet-v4/src/types/Wrapper.js#L157. Where the wallet is created but the network is not passed in.

We have some more work to do around network configurations, but this is definitely on the todo list! In the meantime, if its a testnet wallet you need you can use https://testnet.blockchain.info/wallet/#/login.

Actually, you may be able to create a testnet wallet there and then use it with the v4 config you have, since it may just be the creation of the wallet that is incorrect.

Best
Phil

[lzhuor]

Hi folks, I tried to fix the above problem in #803.

After the fix, in debug mode, I can see network is passed all the way down. However, I am getting below error after wallet creation:

The error was thrown from kvStore/index.js during calling GET https://api-testnet.blockchain.info/metadata/1CH6gsibWwGqTTZYZ6cEuMKMTwJL1Wvfsq

const fetchKVStore = kv => {
    let setKvFromResponse = curry((currentKv, res) => {
      if (res === null) return set(KV.value, null, currentKv)
      let setFromResponse = compose(
        set(KV.magicHash, prop('compute_new_magic_hash', res)),
        set(KV.value, KV.extractResponse(kv.encKeyBuffer, res))
      )
      return setFromResponse(currentKv)
    })

    return request('GET', kv.address)
      .map(KV.verifyResponse(kv.address))
      .chain(eitherToTask)
      .map(setKvFromResponse(kv))
      .rejectedMap(e => {
        console.error(
          `Failed to fetch metadata entry ${kv.typeId} at ${kv.address}:`,
          e
        )
        return new Error('METADATA_FETCH_FAILED')
      })
  }

Do you have an idea about the cause? Thank you for your time! ❤️

[plondon]

@lzhuor first of all, thank you so so much for your contribution. I or someone on the team will surely find time this week to make a more comprehensive review. For now to ensure you're not stuck I noticed that https://api-testnet.blockchain.info/metadata/**1CH6gsibWwGqTTZYZ6cEuMKMTwJL1Wvfsq** is not a testnet address. metadata will check this and fail because of that most likely.

[plondon]

Compare the response to curl 'https://api-testnet.blockchain.info/metadata/mp3jyzMgYJhnmCuTsXpRbh78YZo1jajA6S' -H 'pragma: no-cache' -H 'origin: https://testnet.blockchain.info' -H 'accept-encoding: gzip, deflate, br' -H 'accept-language: en-US,en;q=0.9' -H 'user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36' -H 'content-type: application/json' -H 'accept: */*' -H 'cache-control: no-cache' -H 'authority: api-testnet.blockchain.info' -H 'referer: https://testnet.blockchain.info/wallet/' -H 'dnt: 1' --compressed

[lzhuor]

Thank you @plondon ! I will continue from above hint.

[plondon]

Bitcoin testnet wallet available here: #874