tx responses can not be deserialized

[onur-ozkan]

Tx broadcasting is currently failing most likely due to the last release, resulting in a deserialization error.

In komodo-defi-proxy, we have implemented the Cosmos protocol which also supports IRIS (including HTLCs). However, we are encountering difficulties in broadcasting SEND and HTLC transactions. While we can still broadcast them to the network, it appears that IRIS nodes are now providing a different response compared to before that leads to deserialization errors.

Our tests and transaction functionalities had been functioning smoothly for almost 2 years, but suddenly we began experiencing deserialization errors. Has there been any intentional change in the response formats from IRIS nodes (specially in the last release)?

Error:

serde parse error\n\nCaused by:\n    invalid utf-8 sequence of 1 bytes from index 0 at line 1 column 1591\n\nLocation:\n

Sample dump of the returned data from SEND tx broadcast that fails with deserialization:

{
    "jsonrpc": "2.0",
    "id": "b7e4f089-3c03-49f5-894b-e38196fdce60",
    "result": {
        "check_tx": {
            "code": 0,
            "data": "",
            "log": "[]",
            "info": "",
            "gas_wanted": "125000",
            "gas_used": "42652",
            "events": [],
            "codespace": "",
            "sender": "",
            "priority": "0",
            "mempoolError": ""
        },
        "deliver_tx": {
            "code": 0,
            "data": "EiYKJC9jb3Ntb3MuYmFuay52MWJldGExLk1zZ1NlbmRSZXNwb25zZQ==",
            "log": "[{\"msg_index\":0,\"events\":[{\"type\":\"message\",\"attributes\":[{\"key\":\"action\",\"value\":\"/cosmos.bank.v1beta1.MsgSend\"},{\"key\":\"sender\",\"value\":\"iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2\"},{\"key\":\"module\",\"value\":\"bank\"}]},{\"type\":\"coin_spent\",\"attributes\":[{\"key\":\"spender\",\"value\":\"iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2\"},{\"key\":\"amount\",\"value\":\"1000unyan\"}]},{\"type\":\"coin_received\",\"attributes\":[{\"key\":\"receiver\",\"value\":\"iaa1su9dhlytf24gff5tl7hxzszfptd0eht4cfmpgv\"},{\"key\":\"amount\",\"value\":\"1000unyan\"}]},{\"type\":\"transfer\",\"attributes\":[{\"key\":\"recipient\",\"value\":\"iaa1su9dhlytf24gff5tl7hxzszfptd0eht4cfmpgv\"},{\"key\":\"sender\",\"value\":\"iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2\"},{\"key\":\"amount\",\"value\":\"1000unyan\"}]},{\"type\":\"message\",\"attributes\":[{\"key\":\"sender\",\"value\":\"iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2\"}]}]}]",
            "info": "",
            "gas_wanted": "125000",
            "gas_used": "57511",
            "events": [
                {
                    "type": "coin_spent",
                    "attributes": [
                        {
                            "key": "spender",
                            "value": "iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2",
                            "index": true
                        },
                        {
                            "key": "amount",
                            "value": "15179unyan",
                            "index": true
                        }
                    ]
                },
                {
                    "type": "coin_received",
                    "attributes": [
                        {
                            "key": "receiver",
                            "value": "iaa17xpfvakm2amg962yls6f84z3kell8c5l9mr3fv",
                            "index": true
                        },
                        {
                            "key": "amount",
                            "value": "15179unyan",
                            "index": true
                        }
                    ]
                },
                {
                    "type": "transfer",
                    "attributes": [
                        {
                            "key": "recipient",
                            "value": "iaa17xpfvakm2amg962yls6f84z3kell8c5l9mr3fv",
                            "index": true
                        },
                        {
                            "key": "sender",
                            "value": "iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2",
                            "index": true
                        },
                        {
                            "key": "amount",
                            "value": "15179unyan",
                            "index": true
                        }
                    ]
                },
                {
                    "type": "message",
                    "attributes": [
                        {
                            "key": "sender",
                            "value": "iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2",
                            "index": true
                        }
                    ]
                },
                {
                    "type": "tx",
                    "attributes": [
                        {
                            "key": "fee",
                            "value": "15179unyan",
                            "index": true
                        },
                        {
                            "key": "fee_payer",
                            "value": "iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2",
                            "index": true
                        }
                    ]
                },
                {
                    "type": "tx",
                    "attributes": [
                        {
                            "key": "acc_seq",
                            "value": "iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2/40611",
                            "index": true
                        }
                    ]
                },
                {
                    "type": "tx",
                    "attributes": [
                        {
                            "key": "signature",
                            "value": "WnXESe8WiB5p3T9E2E2eKWVkw5GkeD0rtwjIPzBGDNhgVF407Lp8I7NSezTm3IGA38zJdh0rawtjGxQbEwMC5w==",
                            "index": true
                        }
                    ]
                },
                {
                    "type": "message",
                    "attributes": [
                        {
                            "key": "action",
                            "value": "/cosmos.bank.v1beta1.MsgSend",
                            "index": true
                        },
                        {
                            "key": "sender",
                            "value": "iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2",
                            "index": true
                        },
                        {
                            "key": "module",
                            "value": "bank",
                            "index": true
                        }
                    ]
                },
                {
                    "type": "coin_spent",
                    "attributes": [
                        {
                            "key": "spender",
                            "value": "iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2",
                            "index": true
                        },
                        {
                            "key": "amount",
                            "value": "1000unyan",
                            "index": true
                        }
                    ]
                },
                {
                    "type": "coin_received",
                    "attributes": [
                        {
                            "key": "receiver",
                            "value": "iaa1su9dhlytf24gff5tl7hxzszfptd0eht4cfmpgv",
                            "index": true
                        },
                        {
                            "key": "amount",
                            "value": "1000unyan",
                            "index": true
                        }
                    ]
                },
                {
                    "type": "transfer",
                    "attributes": [
                        {
                            "key": "recipient",
                            "value": "iaa1su9dhlytf24gff5tl7hxzszfptd0eht4cfmpgv",
                            "index": true
                        },
                        {
                            "key": "sender",
                            "value": "iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2",
                            "index": true
                        },
                        {
                            "key": "amount",
                            "value": "1000unyan",
                            "index": true
                        }
                    ]
                },
                {
                    "type": "message",
                    "attributes": [
                        {
                            "key": "sender",
                            "value": "iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2",
                            "index": true
                        }
                    ]
                }
            ],
            "codespace": ""
        },
        "hash": "BB9BCC7D4BCC4FCF4FA1A61ACA2F1E333A93633021D2CA36BA4C7555997CEF99",
        "height": "13301033"
    }
}

[onur-ozkan]

Additionally, attempting to retrieve the raw transaction using old transaction hashes results in a tx not found error. Although I can access the transaction on the explorer https://nyancat.iobscan.io/#/txs/5BBF9D0C95765675281921789AD973CA480799ED4B44EEBD43D75FDEAF246053, when I click on the JSON tab, it fails. The same issue arises when attempting to query the transaction hash on the /cosmos/tx/v1beta1/txs/{hash} endpoint.

[onur-ozkan]

I debugged recent Iris releases and can confirm that this issue started with v2.1.0-rc0 release. Everything works smoothly with the v2.0.3 release.

[dreamer-zq]

@onur-ozkan Sorry, I cannot reproduce this problem, the transaction [5BBF9D0C95765675281921789AD973CA480799ED4B44EEBD43D75FDEAF246053] no longer exists in nyancat testnet. If you still have questions later, please continue to add the content of the question.

[onur-ozkan]

@onur-ozkan Sorry, I cannot reproduce this problem, the transaction [5BBF9D0C95765675281921789AD973CA480799ED4B44EEBD43D75FDEAF246053] no longer exists in nyancat testnet. If you still have questions later, please continue to add the content of the question.

How does it appear in the explorers?

Also, my main question was this:

Our tests and transaction functionalities had been functioning smoothly for almost 2 years, but suddenly we began experiencing deserialization errors. Has there been any intentional change in the response formats from IRIS nodes (specially in the last release)?

I debugged recent Iris releases and can confirm that this issue started with v2.1.0-rc0 release. Everything works smoothly with the v2.0.3 release.