fetchTransaction: The transaction sent by ckblightClient is still in pending status.

[gpBlockchain]

light client version:CKB Light Client 0.2.1

 ./ckb-light-client --version
CKB Light Client 0.2.1

When using fetchTransaction to query a transaction sent by ckblightClient, the result will remain in a pending state:

• If the transaction is committed on the chain, the status will be changed from pending to commit once the light node synchronizes the transaction.
• If the transaction is a rejected transaction, it will remain in pending status.

Scenarios:

• when a user replays a transaction on the chain, it will remain in pending status and cannot be changed through fetchTransaction unless the transaction is synchronized again using setScript.

guopenglin@MacBook-Pro-4 ~ % curl http://localhost:9000/ -X POST -H "Content-Type: application/json" -d '{"jsonrpc": "2.0", "method": "send_transaction", "params": [{"cell_deps":[{"dep_type":"dep_group","out_point":{"index":"0x0","tx_hash":"0xf8de3bb47d055cdf460d93a2a6e1b05f7432f9777c8c474abf4eec1d4aee5d37"}}],"header_deps":[],"inputs":[{"previous_output":{"index":"0x7","tx_hash":"0x8f8c79eb6671709633fe6a46de93c0fedc9c1b8a6527a18d3983879542635c9f"},"since":"0x0"}],"outputs":[{"capacity":"0x470de4df820000","lock":{"args":"0xff5094c2c5f476fc38510018609a3fd921dd28ad","code_hash":"0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8","hash_type":"type"},"type":null},{"capacity":"0xb61134e5a35e800","lock":{"args":"0x64257f00b6b63e987609fa9be2d0c86d351020fb","code_hash":"0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8","hash_type":"type"},"type":null}],"outputs_data":["0x","0x"],"version":"0x0","witnesses":["0x5500000010000000550000005500000041000000af34b54bebf8c5971da6a880f2df5a186c3f8d0b5c9a1fe1a90c95b8a4fb89ef3bab1ccec13797dcb3fee80400f953227dd7741227e08032e3598e16ccdaa49c00"]}], "id": 1}'
{"jsonrpc":"2.0","result":"0xf34f4eaac4a662927fb52d4cb608e603150b9e0678a0f5ed941e3cfd5b68fb30","id":1}
guopenglin@MacBook-Pro-4 ~ % curl http://localhost:9000/ -X POST -H "Content-Type: application/json" -d '{"jsonrpc": "2.0", "method": "fetch_transaction", "params": ["0xf34f4eaac4a662927fb52d4cb608e603150b9e0678a0f5ed941e3cfd5b68fb30"], "id": 1}'
{"jsonrpc":"2.0","result":{"data":{"cycles":"0x19ad65","transaction":{"cell_deps":[{"dep_type":"dep_group","out_point":{"index":"0x0","tx_hash":"0xf8de3bb47d055cdf460d93a2a6e1b05f7432f9777c8c474abf4eec1d4aee5d37"}}],"hash":"0xf34f4eaac4a662927fb52d4cb608e603150b9e0678a0f5ed941e3cfd5b68fb30","header_deps":[],"inputs":[{"previous_output":{"index":"0x7","tx_hash":"0x8f8c79eb6671709633fe6a46de93c0fedc9c1b8a6527a18d3983879542635c9f"},"since":"0x0"}],"outputs":[{"capacity":"0x470de4df820000","lock":{"args":"0xff5094c2c5f476fc38510018609a3fd921dd28ad","code_hash":"0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8","hash_type":"type"},"type":null},{"capacity":"0xb61134e5a35e800","lock":{"args":"0x64257f00b6b63e987609fa9be2d0c86d351020fb","code_hash":"0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8","hash_type":"type"},"type":null}],"outputs_data":["0x","0x"],"version":"0x0","witnesses":["0x5500000010000000550000005500000041000000af34b54bebf8c5971da6a880f2df5a186c3f8d0b5c9a1fe1a90c95b8a4fb89ef3bab1ccec13797dcb3fee80400f953227dd7741227e08032e3598e16ccdaa49c00"]},"tx_status":{"block_hash":null,"status":"pending"}},"status":"fetched"},"id":1}
guopenglin@MacBook-Pro-4 ~ % curl https://testnet.ckb.dev/ -X POST -H "Content-Type: application/json" -d '{"jsonrpc": "2.0", "method": "get_transaction", "params": ["0xf34f4eaac4a662927fb52d4cb608e603150b9e0678a0f5ed941e3cfd5b68fb30"], "id": 1}'
{"jsonrpc":"2.0","result":{"cycles":"0x19ad65","transaction":{"cell_deps":[{"dep_type":"dep_group","out_point":{"index":"0x0","tx_hash":"0xf8de3bb47d055cdf460d93a2a6e1b05f7432f9777c8c474abf4eec1d4aee5d37"}}],"hash":"0xf34f4eaac4a662927fb52d4cb608e603150b9e0678a0f5ed941e3cfd5b68fb30","header_deps":[],"inputs":[{"previous_output":{"index":"0x7","tx_hash":"0x8f8c79eb6671709633fe6a46de93c0fedc9c1b8a6527a18d3983879542635c9f"},"since":"0x0"}],"outputs":[{"capacity":"0x470de4df820000","lock":{"args":"0xff5094c2c5f476fc38510018609a3fd921dd28ad","code_hash":"0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8","hash_type":"type"},"type":null},{"capacity":"0xb61134e5a35e800","lock":{"args":"0x64257f00b6b63e987609fa9be2d0c86d351020fb","code_hash":"0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8","hash_type":"type"},"type":null}],"outputs_data":["0x","0x"],"version":"0x0","witnesses":["0x5500000010000000550000005500000041000000af34b54bebf8c5971da6a880f2df5a186c3f8d0b5c9a1fe1a90c95b8a4fb89ef3bab1ccec13797dcb3fee80400f953227dd7741227e08032e3598e16ccdaa49c00"]},"tx_status":{"block_hash":"0x945e47a6896650f24482fdffa656020ceb5e3ce0c4a4f0af87db07e73a271bb9","reason":null,"status":"committed"}},"id":1}
guopenglin@MacBook-Pro-4 ~ % 

• if a user's transaction is rejected by the chain, querying it through a light node will always result in a pending status. The reason for rejection can only be known by querying full ckb, which can lead to users who only use light nodes being unable to determine the reason for a transaction failure.