[receive_btc] the expiry time of the LND invoice is greater than that of the CKB invoice

[gpBlockchain]

commit:doitian@327aed0

1. invoice = fiber.new_invoice(expiry:"0x0")
2. receive_btc(invoice)
   return response ,"expiry": "0x15180"
   expected : return error
3. lnd decodepayreq lnd invoice
   expiry: 86400
   expected: expiry <= fiber invoice ?

# invoice = fiber.new_invoice(expiry:"0x0")
curl --location 'http://127.0.0.1:8229' --header 'Content-Type: application/json' --data '{
    "id": 42,
    "jsonrpc": "2.0",
    "method": "new_invoice",
    "params": [
        {
            "amount": "0x1",
            "currency": "Fibd",
            "description": "test invoice",
            "udt_type_script": {
                "code_hash": "0x102583443ba6cfe5a3ac268bbb4475fb63eb497dce077f126ad3b148d4f4f8f8",
                "hash_type": "type",
                "args": "0x32e555f3ff8e135cece1351a6a2971518392c1e30375c1e006ad0ce8eac07947"
            },
            "payment_preimage": "0xe98d776ab9ebc7364967a050ff7a20529cb41cb9b713a2f3f6a7ce1369eefc73",
            "expiry": "0x0"
        }
    ]
}'
2025-12-08 11:29:19 [connectionpool.py:241][DEBUG] Starting new HTTP connection (1): 127.0.0.1:8229
2025-12-08 11:29:19 [connectionpool.py:544][DEBUG] http://127.0.0.1:8229 "POST / HTTP/1.1" 200 1315
2025-12-08 11:29:19 [fiber_rpc.py:239][DEBUG] response:
{"jsonrpc": "2.0", "id": 42, "result": {"invoice_address": "fibd11prh3346fjmtczxuy2fhdvu2st4glumxlg83y9maqywqvg35mqp7ht7u0cntc8ftxjhk03fsq670tflzqhxfzuzaezgpsncjdletw2mpw7ng9y4jqc86fzhl5lqne4t78hcfyk330zvvvufc5gkz09p2a0jav4nyhx94m4wm93zjd4mgmfa64eawp9kyzce8qlqlrkccluzlxvmwgcpj5j84rkqkmxh2nz0xun07vuyrlcqwlry6gaxu7tecfnkgxem7x60gqaalrs6sa8nw03xucuz4kze06zftujfa0j67a3qcrmpxkaqlcdukuv7jeh4vh4lr6meqxzy3j96sy3yk8nmkxlnjw7vcv8t6g5td8yqxuh8xt8fyeg8gmkwpdyscl93lprjn6wwhc7qgu706pwnzk2csk3rjrs37268vesmel9ve6q08tl3x6zuff9mmrzxlzgc920zft7du0gp3mruj8", "invoice": {"currency": "Fibd", "amount": "0x1", "signature": "061c1707060b070904190807081b160e010d0410181f05111f010312131a0e0e17181e00081c1e0f1a010e1302160a1810161103120310111e0a1a070c19101b191f050c191a000f070b1f11061a021c0909051b1b0302061f020818050a0f02090b1e0d1c0f0801", "data": {"timestamp": "0x19afc01adce", "payment_hash": "0x0003c6f1f89689a51cdef581c51d1c4fadf6994decfde5318bc05048e84489f1", "attrs": [{"description": "test invoice"}, {"expiry_time": "0x0"}, {"final_htlc_minimum_expiry_delta": "0x535"}, {"udt_script": "0x55000000100000003000000031000000102583443ba6cfe5a3ac268bbb4475fb63eb497dce077f126ad3b148d4f4f8f8012000000032e555f3ff8e135cece1351a6a2971518392c1e30375c1e006ad0ce8eac07947"}, {"payee_public_key": "03fa65dc9292a88ae014deea5a094630d021334ec20f909b452c4d8cd5a2961846"}]}}}}

# 2. receive_btc(invoice)       

{"jsonrpc": "2.0", "id": 42, "result": {"timestamp": "0x6936460f", "expiry": "0x15180", "ckb_final_tlc_expiry_delta": "0x535", "wrapped_btc_type_script": {"code_hash": "0x102583443ba6cfe5a3ac268bbb4475fb63eb497dce077f126ad3b148d4f4f8f8", "hash_type": "type", "args": "0x32e555f3ff8e135cece1351a6a2971518392c1e30375c1e006ad0ce8eac07947"}, "incoming_invoice": {"Lightning": "lnbcrt10n1p5nv3s0pp5qqpudu0cj6y628x77kqu28guf7kldx2dan772vvtcpgy36zy38csdqqcqrp2exqyz5vqsp5x60wcdeg47ky0wtcrasprw83kpzlerv6l9pels5syqdm4ffgk5zs9qxpqysgqkv8cffwhpdd9mxep89mla5jhqdrd4wnv6a3nhpnyh6phvj4r59qx5rvrvy83tr3epvs6wlhh74cz9ys2vhjtrn0x7e44lc4vsupxh8cpxm7afe"}, "outgoing_pay_req": "fibd11prh3346fjmtczxuy2fhdvu2st4glumxlg83y9maqywqvg35mqp7ht7u0cntc8ftxjhk03fsq670tflzqhxfzuzaezgpsncjdletw2mpw7ng9y4jqc86fzhl5lqne4t78hcfyk330zvvvufc5gkz09p2a0jav4nyhx94m4wm93zjd4mgmfa64eawp9kyzce8qlqlrkccluzlxvmwgcpj5j84rkqkmxh2nz0xun07vuyrlcqwlry6gaxu7tecfnkgxem7x60gqaalrs6sa8nw03xucuz4kze06zftujfa0j67a3qcrmpxkaqlcdukuv7jeh4vh4lr6meqxzy3j96sy3yk8nmkxlnjw7vcv8t6g5td8yqxuh8xt8fyeg8gmkwpdyscl93lprjn6wwhc7qgu706pwnzk2csk3rjrs37268vesmel9ve6q08tl3x6zuff9mmrzxlzgc920zft7du0gp3mruj8", "payment_hash": "0x0003c6f1f89689a51cdef581c51d1c4fadf6994decfde5318bc05048e84489f1", "amount_sats": "0x1", "fee_sats": "0x0", "status": "pending"}}

# lnd decodepayreq lnd invoice      
/Users/guopenglin/PycharmProjects/fiber-py-integration-test/download/lnd/current/lnd/lncli -n regtest --lnddir="/Users/guopenglin/PycharmProjects/fiber-py-integration-test/tmp/lnd/node0" --no-macaroons --rpcserver "localhost:10009" decodepayreq lnbcrt10n1p5nv3s0pp5qqpudu0cj6y628x77kqu28guf7kldx2dan772vvtcpgy36zy38csdqqcqrp2exqyz5vqsp5x60wcdeg47ky0wtcrasprw83kpzlerv6l9pels5syqdm4ffgk5zs9qxpqysgqkv8cffwhpdd9mxep89mla5jhqdrd4wnv6a3nhpnyh6phvj4r59qx5rvrvy83tr3epvs6wlhh74cz9ys2vhjtrn0x7e44lc4vsupxh8cpxm7afe
{
    "destination":  "0375b8034fe59086cc4f8bb902e54bbaa0ad0787f4265b3ffb4892ec1b10a0cbfc",
    "payment_hash":  "0003c6f1f89689a51cdef581c51d1c4fadf6994decfde5318bc05048e84489f1",
    "num_satoshis":  "1",
    "timestamp":  "1765164559",
    "expiry":  "86400",
    "description":  "",
    "description_hash":  "",
    "fallback_addr":  "",
    "cltv_expiry":  "1369",
    "route_hints":  [],
    "payment_addr":  "369eec3728afac47b9781f6011b8f1b045fc8d9af9439fc290201bbaa528b505",
    "num_msat":  "1000",
    "features":  {
        "8":  {
            "name":  "tlv-onion",
            "is_required":  true,
            "is_known":  true
        },
        "14":  {
            "name":  "payment-addr",
            "is_required":  true,
            "is_known":  true
        },
        "17":  {
            "name":  "multi-path-payments",
            "is_required":  false,
            "is_known":  true
        },
        "25":  {
            "name":  "route-blinding",
            "is_required":  false,
            "is_known":  true
        }
    },
    "blinded_paths":  []
}

[doitian]

A expected behavior. The invoice created by CCH must be hold until the outgoing invoice is settled.

[doitian]

This is the latest logic:

        let duration_since_epoch = SystemTime::now().duration_since(UNIX_EPOCH)?;
        // Convert timestamp + expiry_time to the expiry time relative to `duration_since`.
        let outgoing_invoice_expiry_delta_seconds = match invoice.expiry_time() {
            Some(expiry) => invoice
                .data
                .timestamp
                .checked_add(expiry.as_millis())
                .and_then(|expiry_at| {
                    u64::try_from(expiry_at / 1000)
                        .unwrap_or(u64::MAX)
                        .checked_sub(duration_since_epoch.as_secs())
                })
                .ok_or(CchError::OutgoingInvoiceExpiryTooShort)?,
            // CKB invoice has no default expiry, use minimal * 2 to create the invoice
            None => self.config.min_outgoing_invoice_expiry_delta_seconds * 2,
        };
        if outgoing_invoice_expiry_delta_seconds
            < self.config.min_outgoing_invoice_expiry_delta_seconds
        {
            return Err(CchError::OutgoingInvoiceExpiryTooShort);
        }

When fiber exprity is too shot, it is rejected. When the invoice has not set an expiry, config min_outgoing_invoice_expiry_delta_seconds x 2 is used.

[doitian]

The code is available in #998