probeForRoute issue

[nicolasburtey]

I'm calling ProbeForRoute with the following parameters:

      destination: '0291f76e4d8395fad2a58635d47d3f68cb8421fbadc47c76115d48a337c7df397d',
      lnd: {
        autopilot: ServiceClient
...
...
      },
      tokens: 1000,
      routes: [],
      payment: '54cef7f9591d443230345bb8a79176d0508f05da1c703ace97c108b8a8b1d232',
      cltv_delta: 40,
      features: [
        { bit: 9, is_known: true, is_required: false, type: 'tlv_onion' },
        {
          bit: 15,
          is_known: true,
          is_required: false,
          type: 'payment_identifier'
        },
        {
          bit: 17,
          is_known: true,
          is_required: false,
          type: 'multipath_payments_v0'
        }
      ],
      max_fee: 20
    }

and I get the following err:

    err: [
      503,
      "UnexpectedErrorWhenPayingViaRoute",
      {
        "err": {
          "code": 2,
          "metadata": {
            "_internal_repr": {},
            "flags": 0
          },
          "details": "missing total_msat"
        }
      }
    ]

on a lnd 0.11-beta.

If I don't give payment as an argument, then I don't have this error.

After reading the lightning-rfc, It seems payment and total_msat are related for mpp. but I guess total_msat should be set automatically when payment is passed as an argument?

[alexbosworth]

You must pass total_mtokens

[nicolasburtey]

ok. that works. thanks!

[nicolasburtey]

actually another question. isn't that mtokens should be 1000x tokens?

I have back ExpectedEqualValuesForTokensAndMtokens

[alexbosworth]

actually another question. isn't that mtokens should be 1000x tokens?

I have back ExpectedEqualValuesForTokensAndMtokens

If there is an issue I would only pass one of the values, you do not need to pass both

[nicolasburtey]

ok

[nicolasburtey]

actually, if I have:

mtokens (only), I get: 400,ExpectedTokensValueToProbeForRoute tokens (only), I get: missing total_msat both: ExpectedEqualValuesForTokensAndMtokens (I have done mtokens: tokens * 1000)

[alexbosworth]

Sorry, total_mtokens is separate, you must set that

But for mtokens vs tokens, only set one of those

So for tokens, set tokens=tokens and total_mtokens=mtokens

[alexbosworth]

Ah you're right there is an issue here

[alexbosworth]

I pushed a change to allow specifying mtokens only

You'll still want to specify total mtokens separately, this is for scenarios where the route is only one path of multiple, the total should be the sum of all, the mtokens is the individual path

[nicolasburtey]

I've upgraded to the last version. Still running into some issue. I'm setting both: mtokens, total_mtokens and payment and I have this error:

    err: [
      503,
      "UnexpectedErrorWhenPayingViaRoute",
      {
        "err": {
          "code": 2,
          "metadata": {
            "_internal_repr": {},
            "flags": 0
          },
          "details": "missing total_msat"
        }
      }
    ]

[alexbosworth]

OK I will take a look

[alexbosworth]

This is a new issue where total_mtokens wasn't being passed along - can you try master and see if it is fixed now?

[nicolasburtey]

this works. thanks!