Solana RPC Methods & Documentation

通过 HTTP 和 Websocket 方法，使用 JSON RPC API 直接与 Solana 节点交互。

配置状态承诺 #

对于预检和交易处理，Solana 节点根据客户端设置的承诺要求选择要查询的银行状态。 该 承诺描述了区块在该时间点的最终确定情况。 查询账本状态时，建议使用较低级别的承诺 来 报告进度，使用较高级别的承诺来确保状态不会回滚。

按照承诺的降序（最最终确定到最不最终确定），客户可以指定：

• finalized(已完成) - 节点将查询由集群绝大多数人确认已达到最大锁定的最新块，这 意味着集群已识别该块已完成。
• confirmed(已确认) - 节点将查询集群中绝大多数投票的最新区块。
  • 它包含了来自gossip和重播的投票。
  • 它不计算对某个区块的后代的投票，只计算对该区块的直接投票。
  • 此确认级别还支持 1.3 版及更高版本中的“乐观确认”保证。
• processed(处理过) - 节点将查询其最近的块。 请注意，该块仍然可能被集群跳过。

对于串行处理许多相关交易，建议使用confirmed(已确认)的提交，它可以平衡速度与回 滚安全性。 为了完全安全，建议使用finalized(已完成)承诺。

默认的承诺 #

If commitment configuration is not provided, the node will default to finalized commitment

只有查询银行状态的方法才接受承诺参数。 它们在下面的API参考中有说明。

RpcResponse Structure #

Many methods that take a commitment parameter return an RpcResponse JSON object comprised of two parts:

• context : An RpcResponseContext JSON structure including a slot field at which the operation was evaluated.
• value : The value returned by the operation itself.

Parsed Responses #

Some methods support an encoding parameter, and can return account or instruction data in parsed JSON format if "encoding":"jsonParsed" is requested and the node has a parser for the owning program. Solana nodes currently support JSON parsing for the following native and SPL programs:

Program	Account State	Instructions
Address Lookup	v1.15.0	v1.15.0
BPF Loader	n/a	stable
BPF Upgradeable Loader	stable	stable
Config	stable
SPL Associated Token Account	n/a	stable
SPL Memo	n/a	stable
SPL Token	stable	stable
SPL Token 2022	stable	stable
Stake	stable	stable
Vote	stable	stable

The list of account parsers can be found here, and instruction parsers here.

Filter criteria #

Some methods support providing a filters object to enable pre-filtering the data returned within the RpcResponse JSON object. The following filters exist:

• memcmp: object - compares a provided series of bytes with program account data at a particular offset. Fields:

  • offset: usize - offset into program account data to start comparison
  • bytes: string - data to match, as encoded string
  • encoding: string - encoding for filter bytes data, either "base58" or "base64". Data is limited in size to 128 or fewer decoded bytes.
    NEW: This field, and base64 support generally, is only available in solana-core v1.14.0 or newer. Please omit when querying nodes on earlier versions

• dataSize: u64 - compares the program account data length with the provided data size