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* Report `instantlock: true` for transactions locked via ChainLocks Also introduce `instantlock_internal` to show the actual lock state. * Always show instantlock_internal
29 lines
1.8 KiB
Markdown
29 lines
1.8 KiB
Markdown
## InstantSend Technical Information
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InstantSend has been integrated into the Core Daemon in two ways:
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* "push" notifications (ZMQ and `-instantsendnotify` cmd-line/config option);
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* RPC commands.
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#### ZMQ
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When a "Transaction Lock" occurs the hash of the related transaction is broadcasted through ZMQ using both the `zmqpubrawtxlock` and `zmqpubhashtxlock` channels.
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* `zmqpubrawtxlock`: publishes the raw transaction when locked via InstantSend
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* `zmqpubhashtxlock`: publishes the transaction hash when locked via InstantSend
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This mechanism has been integrated into Bitcore-Node-Dash which allows for notification to be broadcast through Insight API in one of two ways:
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* WebSocket: [https://github.com/dashpay/insight-api-dash#web-socket-api](https://github.com/dashpay/insight-api-dash#web-socket-api)
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* API: [https://github.com/dashpay/insight-api-dash#instantsend-transactions](https://github.com/dashpay/insight-api-dash#instantsend-transactions)
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#### Command line option
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When a wallet InstantSend transaction is successfully locked a shell command provided in this option is executed (`%s` in `<cmd>` is replaced by TxID):
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```
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-instantsendnotify=<cmd>
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```
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#### RPC
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Details pertaining to an observed "Transaction Lock" can also be retrieved through RPC. There is a boolean field named `instantlock` which indicates whether a given transaction is locked via InstantSend. This field is present in the output of some wallet RPC commands e.g. `listsinceblock`, `gettransaction` etc. as well as in the output of some mempool RPC commands e.g. `getmempoolentry` and a couple of others like `getrawmempool` (for `verbose=true` only). For blockchain based RPC commands `instantlock` will also say `true` if this transaction was locked via LLMQ based ChainLocks (for backwards compatibility reasons).
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