txpool
APIs to inspect transaction pools in the node.
The namespace txpool API gives you access to several non-standard RPC methods to inspect the contents of the transaction pool containing all the currently pending transactions as well as the ones queued for future processing.
txpool_content
The content inspection property can be queried to list the exact details of all the transactions currently pending for inclusion in the next block(s), as well as the ones that are being scheduled for future execution only.
The result is an object with two fields pending and queued. Each of these fields is associative arrays, in which each entry maps an origin-address to a batch of scheduled transactions. These batches themselves are maps associating nonces with actual transactions.
Console
txpool.content
RPC
{"method": "txpool_content"}
Parameters
None
Return Value
JSON string
The content of the transaction pool.
Example
Console
> txpool.content
{
pending: {
0x18352126c43E4EC314E41b632A0c1af6b233260b: {
733: {
blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
blockNumber: "0x0",
from: "0x18352126c43e4ec314e41b632a0c1af6b233260b",
gas: "0x5208",
gasPrice: "0x0",
input: "0x",
nonce: "0x2dd",
signatures: [...],
to: "0x18352126c43e4ec314e41b632a0c1af6b233260b",
transactionIndex: "0x0",
txHash: "0xeeac2d4f1255e50659cd57a58e74e46d2af7122d91e347ca341d4e2cd7da689b",
type: "TxTypeLegacyTransaction",
value: "0x2"
},
},
0x952c9a710Ce70D58FD5C55d45c4479b82dEA6DAC: {
756: {
blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
blockNumber: "0x0",
from: "0x952c9a710ce70d58fd5c55d45c4479b82dea6dac",
gas: "0x5208",
gasPrice: "0x0",
input: "0x",
nonce: "0x2f4",
signatures: [...],
to: "0x6afe934786fe008c79577d85d8e1af1f6f14c73a",
transactionIndex: "0x0",
txHash: "0x0fad399b31b520e4af5bc9f2ea40de71854a7f3c41d5918d5ed120d1b4fc5154",
type: "TxTypeLegacyTransaction",
value: "0x1"
},
757: {
blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
blockNumber: "0x0",
from: "0x952c9a710ce70d58fd5c55d45c4479b82dea6dac",
gas: "0x5208",
gasPrice: "0x0",
input: "0x",
nonce: "0x2f5",
signatures: [...],
to: "0x18352126c43e4ec314e41b632a0c1af6b233260b",
transactionIndex: "0x0",
txHash: "0xdfc3053ce6c27fd4610bb2e103837c4435f27bb6bb9dfd56110cbd2bbe5ea7fa",
type: "TxTypeLegacyTransaction",
value: "0x1"
},
},
},
queued: {
0x7dCef85A0356c36a0B43772e1F7C2e80cE029b96: {
786: {
blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
blockNumber: "0x0",
from: "0x7dcef85a0356c36a0b43772e1f7c2e80ce029b96",
gas: "0x5208",
gasPrice: "0x0",
input: "0x",
nonce: "0x312",
signatures: [...],
to: "0x7dcef85a0356c36a0b43772e1f7c2e80ce029b96",
transactionIndex: "0x0",
txHash: "0xf90dab02c355b4f09d1b1f224380a278a03fc76d1fc7d866fb2ad2f503525717",
type: "TxTypeLegacyTransaction",
value: "0x0"
},
},
0xd5B94dd456040612d721A8Eae1e4E97a70b92812: {
742: {
blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
blockNumber: "0x0",
from: "0xd5b94dd456040612d721a8eae1e4e97a70b92812",
gas: "0x5208",
gasPrice: "0x0",
input: "0x",
nonce: "0x2e6",
signatures: [...],
to: "0xd5b94dd456040612d721a8eae1e4e97a70b92812",
transactionIndex: "0x0",
txHash: "0x6266969f1221b258bb2ce6fd2bcce88ad76be1e2b3eb5c770311a2bc0c2cc74a",
type: "TxTypeLegacyTransaction",
value: "0x2"
},
}
}
}HTTP RPC
txpool_inspect
The inspect inspection property can be queried to list a textual summary of all the transactions currently pending for inclusion in the next block(s), as well as the ones that are being scheduled for future execution only. This is a method specifically tailored to developers to quickly see the transactions in the pool and find any potential issues.
The result is an object with two fields pending and queued. Each of these fields is associative arrays, in which each entry maps an origin-address to a batch of scheduled transactions. These batches themselves are maps associating nonces with transactions summary strings.
Console
txpool.inspect
RPC
{"method": "txpool_inspect"}
Parameters
None
Return Value
JSON string
A list of pending and queued transactions.
Example
Console
HTTP RPC
txpool_status
The status inspection property can be queried for the number of transactions currently pending for inclusion in the next block(s), as well as the ones that are being scheduled for future execution only.
The result is an object with two fields pending and queued, each of which is a counter representing the number of transactions in that particular state.
Console
txpool.status
RPC
{"method": "txpool_status"}
Parameters
None
Return Value
pending
int
The number of pending transactions.
queued
int
The number of queued transactions.
Example
Console
HTTP RPC
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