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doc: document that sendonion doesn't have to specify (but can!) the first_hop channel.

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This was always the case, though it was ignored.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Rusty Russell 2022-08-09 07:49:18 +09:30 • committed by neil saitug
parent 054339e0cb
commit fcba09dc33
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doc/lightning-sendonion.7.md
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@ -42,6 +42,10 @@ to add an HTLC for 1002 millisatoshis and a delay of 21 blocks on top of the cur
} }
``` ```
If the first element of *route* does not have "channel" set, a
suitable channel (if any) will be chosen, otherwise that specific
short-channel-id is used.
The *payment_hash* parameter specifies the 32 byte hex-encoded hash to use as The *payment_hash* parameter specifies the 32 byte hex-encoded hash to use as
a challenge to the HTLC that we are sending. It is specific to the onion and a challenge to the HTLC that we are sending. It is specific to the onion and
has to match the one the onion was created with. has to match the one the onion was created with.