Come posso capire perché una transazione non è andata a buon fine?

Question

Come posso capire perché una transazione non è andata a buon fine?

- 8
- 682 2019-02-02
Codici dierrore ditransazione?

Una transazione diesempio sutzscan.io casualenonfornisce uno specifico codice dierrore .È statoiniettato da unnodo sconosciuto senza accesso all'output delterminale.

C'è unmodoper ricostruire come èemerso l'erroree questo semplicementenon vienemostratoin tzscan?

Transaction error codes?

A random failed example transaction on tzscan.io does not provide a specific error code. It has been injected by an unknown node without access to its terminal output.

Is there a way to retrace how the error emerged and is this simply not shown in tzscan?

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Klassare · Accepted Answer · 2019-02-02

8

2019-02-02

Letransazioninon riuscite dovrebberoessere rilevatee ottenere un codice dierrore restituitonellapreapply (RPC). Inmodo che questatransazione sia stata ancheiniettataindica unbug o una cattivagestione deglierroriin unportafoglio. Èmoltofacile capireperché questatransazionenon è riuscita. Hatentato diinviareil saldo completoe non hafondi sufficientiper coprire l'ustione.

Puoi utilizzare rpcper ottenerei metadati. In questoesempio dovresti controllaregli ophash al livello 296452 . L'ophash che ciinteressa daltuo link originale è onuEbjVrbaXtn4iK8KFzc4a8xTkfkyAfxiNE698SLm3MtnimdUs

Èpossibile accedere atutte leinformazioni relative alblocco all'indirizzo

https://rpc.tezrpc.me/chains/main/blocks/296452

Per semplificarepossiamofiltrare l'operazione specifica a cui siamointeressati. Le operazioni sonoindicizzateper 2 valori. Ilprimoindice sarà sempre 3per le operazionieseguite da unportafoglio.

https://rpc.tezrpc.me/chains/main/blocks/296452 /operation_hashes/3

""ooeujV9F66p54xzKL3d8UgsdriAPwqroipLZRdVXVJKpD6oAMJA","onuEbjVrbaXtn4iK8KFzc4a8xTkfkyAfxiNE698SLm3MtnimdUs



 La seconda operazione hash (indice 1) qui è quella che ciinteressa,quinditroveremoiltuo ophashnellaposizione 3/1. 

  https://rpc.tezrpc.me/chains/main/blocks/296452 /operation_hashes/3/1  

"onuEbjVrbaXtn4iK8KFzc4a8xTkfkyAfxiNE698SLm3MtnimdUs" 

 Infine chiediamo a rpcilblocco  296452 e l'operazionenellaposizione  3/1 . 

  https://rpc.tezrpc.me/chains/main/blocks/296452 /operations/3/1  



  {
  "protocollo": "PsddFKi32cMJ2qPjf43Qv5GDWLDPZb3T3bF6fLKiF5HtvHNU7aP",
  "chain_id": "NetXdQprcVkpaWU",
  "hash": "onuEbjVrbaXtn4iK8KFzc4a8xTkfkyAfxiNE698SLm3MtnimdUs",
  "branch": "BMVq2BDfVH4Y3NdNa9Dr8smiHHkFkFqiD7qRKT9SH6TH4zrr74M",
  "Contenuti": [
    {
      "kind": "transazione",
      "source": "tz1eKsvd2G7QXsJvim5ZBYhxnuN7SJLe2phy",
      "tariffa": "1420",
      "counter": "302028",
      "gas_limit": "10300",
      "storage_limit": "300",
      "amount": "1681485669",
      "destinazione": "tz1MNEqXdtu8YT4ppF5tRJ7PLS8vRZJ19FRQ",
      "metadati": {
        "balance_updates": [
          {
            "kind": "contratto",
            "contract": "tz1eKsvd2G7QXsJvim5ZBYhxnuN7SJLe2phy",
            "modifica": "-1420"
          },
          {
            "kind": "freezer",
            "category": "fee",
            "delegato": "tz1Yju7jmmsaUiG9qQLoYv35v5pHgnWoLWbt",
            "livello": 72,
            "change": "1420"
          }
        ],
        "operation_result": {
          "status": "backtracked",
          "errori": [
            {
              "kind": "temporaneo",
              "id": "proto.003-PsddFKi3.contract.cannot_pay_storage_fee"
            },
            {
              "kind": "permanente",
              "id": "proto.003-PsddFKi3.context.storage_error",
              "missing_key": [
                "contratti",
                "indice",
                "ed25519",
                "cc",
                "fb",
                "95",
                "87",
                "2a",
                "59f77f5729e9376bcb315e917e322e",
                "equilibrio"
              ],
              "funzione": "ottieni"
            }
          ],
          "balance_updates": [
            {
              "kind": "contratto",
              "contract": "tz1eKsvd2G7QXsJvim5ZBYhxnuN7SJLe2phy",
              "modifica": "-1681485669"
            },
            {
              "kind": "contratto",
              "contratto": "tz1MNEqXdtu8YT4ppF5tRJ7PLS8vRZJ19FRQ",
              "change": "1681485669"
            },
            {
              "kind": "contratto",
              "contratto": "tz1eKsvd2G7QXsJvim5ZBYhxnuN7SJLe2phy",
              "modifica": "-257000"
            }
          ],
          "consumed_gas": "10260",
          "allocation_destination_contract":true
        }
      }
    }
  ],
  "firma": "sigS5LzsJh9wuk4vniGtB2xn8jiFgBjVujd3nrWXVSZhigQhKwm7scVoEVgWmGSrqPq5uM3frp6b1dBZYzfnhAYTiSv1YEw5"
}
 

 Vedrai cheilprimo codice dierrore è proto.003-PsddFKi3.contract.cannot_pay_storage_fee


                                                                        Failed transactions should be detected and get an error code returned in the preapply (RPC). So that this transaction even have been injected indicate a bug or bad error handling in a wallet. It is very easy to see why this transaction failed. It tried to send the full balance and wont have enough funds to cover the burn.

You can use the rpc to get the metadata. In this example you would check the ophashes on level 296452. The ophash we are interested in from your original link is onuEbjVrbaXtn4iK8KFzc4a8xTkfkyAfxiNE698SLm3MtnimdUs

The entire information regarding the block can be accessed at

https://rpc.tezrpc.me/chains/main/blocks/296452

To make it easier we can filter out the specific operation we are interested in. Operations are indexed by 2 values. The first index will always be 3 for operations done from a wallet.

https://rpc.tezrpc.me/chains/main/blocks/296452/operation_hashes/3

["ooeujV9F66p54xzKL3d8UgsdriAPwqroipLZRdVXVJKpD6oAMJA","onuEbjVrbaXtn4iK8KFzc4a8xTkfkyAfxiNE698SLm3MtnimdUs"]

The second operation hash (index 1) here is the one we are interested in, so we'll find your ophash at location 3/1.

https://rpc.tezrpc.me/chains/main/blocks/296452/operation_hashes/3/1

"onuEbjVrbaXtn4iK8KFzc4a8xTkfkyAfxiNE698SLm3MtnimdUs"

Finally we ask the rpc for block 296452 and the operation at location 3/1.

https://rpc.tezrpc.me/chains/main/blocks/296452/operations/3/1



{
  "protocol": "PsddFKi32cMJ2qPjf43Qv5GDWLDPZb3T3bF6fLKiF5HtvHNU7aP",
  "chain_id": "NetXdQprcVkpaWU",
  "hash": "onuEbjVrbaXtn4iK8KFzc4a8xTkfkyAfxiNE698SLm3MtnimdUs",
  "branch": "BMVq2BDfVH4Y3NdNa9Dr8smiHHkFkFqiD7qRKT9SH6TH4zrr74M",
  "contents": [
    {
      "kind": "transaction",
      "source": "tz1eKsvd2G7QXsJvim5ZBYhxnuN7SJLe2phy",
      "fee": "1420",
      "counter": "302028",
      "gas_limit": "10300",
      "storage_limit": "300",
      "amount": "1681485669",
      "destination": "tz1MNEqXdtu8YT4ppF5tRJ7PLS8vRZJ19FRQ",
      "metadata": {
        "balance_updates": [
          {
            "kind": "contract",
            "contract": "tz1eKsvd2G7QXsJvim5ZBYhxnuN7SJLe2phy",
            "change": "-1420"
          },
          {
            "kind": "freezer",
            "category": "fees",
            "delegate": "tz1Yju7jmmsaUiG9qQLoYv35v5pHgnWoLWbt",
            "level": 72,
            "change": "1420"
          }
        ],
        "operation_result": {
          "status": "backtracked",
          "errors": [
            {
              "kind": "temporary",
              "id": "proto.003-PsddFKi3.contract.cannot_pay_storage_fee"
            },
            {
              "kind": "permanent",
              "id": "proto.003-PsddFKi3.context.storage_error",
              "missing_key": [
                "contracts",
                "index",
                "ed25519",
                "cc",
                "fb",
                "95",
                "87",
                "2a",
                "59f77f5729e9376bcb315e917e322e",
                "balance"
              ],
              "function": "get"
            }
          ],
          "balance_updates": [
            {
              "kind": "contract",
              "contract": "tz1eKsvd2G7QXsJvim5ZBYhxnuN7SJLe2phy",
              "change": "-1681485669"
            },
            {
              "kind": "contract",
              "contract": "tz1MNEqXdtu8YT4ppF5tRJ7PLS8vRZJ19FRQ",
              "change": "1681485669"
            },
            {
              "kind": "contract",
              "contract": "tz1eKsvd2G7QXsJvim5ZBYhxnuN7SJLe2phy",
              "change": "-257000"
            }
          ],
          "consumed_gas": "10260",
          "allocated_destination_contract": true
        }
      }
    }
  ],
  "signature": "sigS5LzsJh9wuk4vniGtB2xn8jiFgBjVujd3nrWXVSZhigQhKwm7scVoEVgWmGSrqPq5uM3frp6b1dBZYzfnhAYTiSv1YEw5"
}


You will see that the first error code is proto.003-PsddFKi3.contract.cannot_pay_storage_fee

                                                                        
                                                                        
                                                                        
                                                                        
                                                                            
                                                                                
                                                                                    
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