UnsupportedTransactionVersionMessage-maxSupportedTransactionVersion


solana可用rpc如下: 
HELIUS_API_KEY = 'your_api_key'
HELIUS_SOLANA_MAIN = 'https://mainnet.helius-rpc.com/?api-key={}'.format(HELIUS_API_KEY)

ALCHEMY_API_KEY = 'your_api_key'
ALCHEMY_SOLANA_MAIN = 'https://solana-mainnet.g.alchemy.com/v2/{}'.format(ALCHEMY_API_KEY)

GETBLOCK_SOLANA_MAIN = 'https://go.getblock.io/{your_getblock_api_key}'

CHAINSTACK_SOLANA_MAIN = 'https://solana-mainnet.core.chainstack.com/{your_chainstack_api_key}'

SOLANA_RPC_LIST = [HELIUS_SOLANA_MAIN, ALCHEMY_SOLANA_MAIN, GETBLOCK_SOLANA_MAIN, CHAINSTACK_SOLANA_MAIN]

def test_rpc():
    rpc_url = SOLANA_RPC_LIST[random.randrange(0, len(SOLANA_RPC_LIST))]
    http_client = Client(rpc_url,commitment=Confirmed)
    blk_height = http_client.get_block_height().to_json()
    height = json.loads(blk_height)['result']
    print(height)

    blk_info = http_client.get_block(height).to_json()
    blk_result = json.loads(blk_info)['result']
    with open('blk.txt','a+',encoding='utf8' ) as f:
        f.write(json.dumps(blk_result))
        f.write('\n')




使用solana的rpc服务时，如果直接调用get_block(height)时，报错信息如下： 
solana.rpc.core.RPCException: UnsupportedTransactionVersionMessage { message: "Transaction version (0) is not supported by the requesting client. Please try the request again with the following configuration parameter: \"maxSupportedTransactionVersion\": 0" }

在stackexchange这个页面中，给出了回答：

curl --location --request POST 'http://api.mainnet-beta.solana.com/' \
  --header 'Content-Type: application/json' --data-raw \
' { "jsonrpc": "2.0", "id": 1, "method": "getConfirmedTransaction", "params": ["5HbX6YFiQJsUhG1RM6YN8KNNY86rEpRJpG9WUWJmirAeiby5B6b6nH5qK43xctCxhecLKCmdKzuA1uFqFrLMfALg", {"encoding": "json", "maxSupportedTransactionVersion":0} ] }

观察发现多了两个参数: enconding和maxSupportedTransactionVersion，受到启发，在get_block中也增加了两个参数：

blk_info = http_client.get_block(height,encoding='json',max_supported_transaction_version=0)
即：
def test_rpc():
    rpc_url = SOLANA_RPC_LIST[random.randrange(0, len(SOLANA_RPC_LIST))]
    http_client = Client(rpc_url,commitment=Confirmed)
    blk_height = http_client.get_block_height().to_json()
    height = json.loads(blk_height)['result']
    print(height)

    blk_info = http_client.get_block(height,encoding='json',max_supported_transaction_version=0)
    blk_json = blk_info.to_json()
    blk_result = json.loads(blk_json)['result']
    with open('blk.txt','a+',encoding='utf8' ) as f:
        f.write(json.dumps(blk_result))
        f.write('\n')

又报错了：
solana.rpc.core.RPCException: BlockCleanedUpMessage { message: "Block 272955789 cleaned up, does not exist on node. First available block: 293529227" }

读上去，感觉意思就是：你要查询到这个高度272955789被清理掉了，我这儿第一个能查询到的高度是293529227，比你的高度大些，你要查的查不到了。

那就改下吧，把max_supported_transaction_version改成1试试看

def test_rpc():
    rpc_url = SOLANA_RPC_LIST[random.randrange(0, len(SOLANA_RPC_LIST))]
    http_client = Client(rpc_url,commitment=Confirmed)
    blk_height = http_client.get_block_height().to_json()
    height = json.loads(blk_height)['result']
    print(height)

    
    blk_info = http_client.get_block(height,encoding='json',max_supported_transaction_version=1)
    blk_json = blk_info.to_json()
    blk_result = json.loads(blk_json)['result']
    with open('blk.txt','a+',encoding='utf8' ) as f:
        f.write(json.dumps(blk_result))
        f.write('\n')

果然好使了，输出结果为：
272956345

blk.txt内容在这里









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