lnd: paying to the payment request #281
Merged
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What
Use the SendPaymentV2 RPC and set payment_request in the request.
This will ensure that the payments are linked to the peerswap invoices that were paid.
And check that the remote pubkey of the channel and the destination of the invoice match to ensure direct payment.
Also added a test case to ensure that payreq is included in the payment.
Both cln and lnd confirmed to include payreq in payment.
Why
To respond to the request for the lightning payment portion of #254.