[send_payment] self payment return no path found

[gpBlockchain]

When Node 1 attempts a self-payment, it returns a "no path found" error, even though the channel is functioning normally.

channel list

• node1(1000)-node2(0)
• node2(1000)-node3(0)
• node3(1000)-node1(0)

1. node1 send_payment(node3,dry_run) return success

curl --location 'http://127.0.0.1:8228' --header 'Content-Type: application/json' --data '{
    "id": 42,
    "jsonrpc": "2.0",
    "method": "send_payment",
    "params": [
        {
            "target_pubkey": "03d3ac53802a85b7180f3dd30e765c65d825a04b2937b4ea26ae42c58153a04bbf",
            "amount": "0x3938700",
            "keysend": true,
            "dry_run": true
        }
    ]
}'
response:
{"jsonrpc": "2.0", "result": {"payment_hash": "0x2df5e3cf54f96a78b0253cdc3714b4baefe48f87a7c476db214cfd53f6859b4e", "status": "Created", "created_at": "0x19385e992ef", "last_updated_at": "0x19385e992ef", "failed_error": null, "fee": "0x0"}, "id": 42}

3. node3 send_payment(node1,dry_run) return success

curl --location 'http://127.0.0.1:8251' --header 'Content-Type: application/json' --data '{
    "id": 42,
    "jsonrpc": "2.0",
    "method": "send_payment",
    "params": [
        {
            "target_pubkey": "02b574b6cdd36d61138ba2e54a8fa931bce0a02f3f7629cea0dd58b86d126e26c0",
            "amount": "0x3938700",
            "keysend": true,
            "dry_run": true
        }
    ]
}'
response:
{"jsonrpc": "2.0", "result": {"payment_hash": "0xf226fd6f460d146d001d3291c5d45e13c8ee0cf4bec7c180f56ae3224e0f03ac", "status": "Created", "created_at": "0x19385e992f3", "last_updated_at": "0x19385e992f3", "failed_error": null, "fee": "0x0"}, "id": 42}

5. node1 send_payment(node1,allow_self_payment) return no path found

curl --location 'http://127.0.0.1:8228' --header 'Content-Type: application/json' --data '{
    "id": 42,
    "jsonrpc": "2.0",
    "method": "send_payment",
    "params": [
        {
            "target_pubkey": "02b574b6cdd36d61138ba2e54a8fa931bce0a02f3f7629cea0dd58b86d126e26c0",
            "amount": "0x3938700",
            "keysend": true,
            "dry_run": true,
            "allow_self_payment": true
        }
    ]
}'
response:
{"jsonrpc": "2.0", "error": {"code": -32000, "message": "Send payment error: Failed to build route, PathFind error: no path found", "data": {"target_pubkey": "02b574b6cdd36d61138ba2e54a8fa931bce0a02f3f7629cea0dd58b86d126e26c0", "amount": "0x3938700", "payment_hash": null, "final_tlc_expiry_delta": null, "tlc_expiry_limit": null, "invoice": null, "timeout": null, "max_fee_amount": null, "max_parts": null, "keysend": true, "udt_type_script": null, "allow_self_payment": true, "dry_run": true}}, "id": 42}

expected return success

log

node.log

[gpBlockchain]

1. node1 send_payment(node3,dry_run) return success
   dry_run return fee is wrong, because node1 don't have enough balance  in node1-node3 channel ,node1 send payment must via node2,so fee can't be 0x0, when i try send payment without dry_run ,return IncorrectOrUnknownPaymentDetails

curl --location 'http://127.0.0.1:8228' --header 'Content-Type: application/json' --data '{
    "id": 42,
    "jsonrpc": "2.0",
    "method": "send_payment",
    "params": [
        {
            "target_pubkey": "03d3ac53802a85b7180f3dd30e765c65d825a04b2937b4ea26ae42c58153a04bbf",
            "amount": "0x3938700",
            "keysend": true
        }
    ]
}'
response:
{"jsonrpc": "2.0", "error": {"code": -32000, "message": "Send payment error: Failed to send onion packet with error IncorrectOrUnknownPaymentDetails", "data": {"target_pubkey": "03d3ac53802a85b7180f3dd30e765c65d825a04b2937b4ea26ae42c58153a04bbf", "amount": "0x3938700", "payment_hash": null, "final_tlc_expiry_delta": null, "tlc_expiry_limit": null, "invoice": null, "timeout": null, "max_fee_amount": null, "max_parts": null, "keysend": true, "udt_type_script": null, "allow_self_payment": null, "dry_run": null}}, "id": 42}

log

  2024-12-02T06:00:01.192824Z ERROR fnn::fiber::channel: Error while processing channel command: InvalidParameter("Adding tlc Offered(0) with amount 60000000 exceeds local balance 0")
    at src/fiber/channel.rs:1847
    in ractor::actor::Actor with id: "0.6"

  2024-12-02T06:00:01.193042Z ERROR fnn::fiber::network: Failed to send payment: SendPaymentError("Failed to send onion packet with error IncorrectOrUnknownPaymentDetails")
    at src/fiber/network.rs:1596
    in ractor::actor::Actor with id: "0.2", name: "Network QmVmj2ScKUYxWzmV75MuMPa1FmdeAYhL3Wdqf8tsK8rkfR"

  2024-12-02T06:00:01.193074Z ERROR fnn::rpc::channel: channel request params SendPaymentCommandParams { target_pubkey: Some(Pubkey(PublicKey(bf4ba05381c542ae26eab437294ba025d8655c760ed33d0f18b7852a8053acd333e0f6d7410a8ad2a4dabb0aba04213d52c08456aa1d9a4b0ddbe42e06e4fa4c))), amount: Some(60000000), payment_hash: None, final_tlc_expiry_delta: None, tlc_expiry_limit: None, invoice: None, timeout: None, max_fee_amount: None, max_parts: None, keysend: Some(true), udt_type_script: None, allow_self_payment: None, dry_run: None } => error: "Send payment error: Failed to send onion packet with error IncorrectOrUnknownPaymentDetails"
    at src/rpc/channel.rs:703

#359