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61 lines
1.4 KiB
Markdown
61 lines
1.4 KiB
Markdown
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# Mempool Messages
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## P2P Messages
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There is currently only one message that Mempool broadcasts
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and receives over the p2p gossip network (via the reactor):
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`TxMessage`
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```go
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// TxMessage is a MempoolMessage containing a transaction.
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type TxMessage struct {
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Tx types.Tx
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}
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```
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TxMessage is go-wire encoded and prepended with `0x1` as a
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"type byte". This is followed by a go-wire encoded byte-slice.
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Prefix of 40=0x28 byte tx is: `0x010128...` followed by
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the actual 40-byte tx. Prefix of 350=0x015e byte tx is:
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`0x0102015e...` followed by the actual 350 byte tx.
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(Please see the [go-wire repo](https://github.com/tendermint/go-wire#an-interface-example) for more information)
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## RPC Messages
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Mempool exposes `CheckTx([]byte)` over the RPC interface.
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It can be posted via `broadcast_commit`, `broadcast_sync` or
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`broadcast_async`. They all parse a message with one argument,
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`"tx": "HEX_ENCODED_BINARY"` and differ in only how long they
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wait before returning (sync makes sure CheckTx passes, commit
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makes sure it was included in a signed block).
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Request (`POST http://gaia.zone:46657/`):
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```json
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{
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"id": "",
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"jsonrpc": "2.0",
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"method": "broadcast_sync",
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"params": {
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"tx": "F012A4BC68..."
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}
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}
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```
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Response:
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```json
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{
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"error": "",
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"result": {
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"hash": "E39AAB7A537ABAA237831742DCE1117F187C3C52",
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"log": "",
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"data": "",
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"code": 0
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},
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"id": "",
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"jsonrpc": "2.0"
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}
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```
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