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| author | MarcoFalke <falke.marco@gmail.com> | 2018-10-28 09:13:05 -0400 |
|---|---|---|
| committer | MarcoFalke <falke.marco@gmail.com> | 2018-10-30 16:40:36 -0400 |
| commit | fa77aaa5ad21563dd18ce3e407d391d37ac8c201 (patch) | |
| tree | 5978dba3bef7b2caeb643e15c3343c6b67e5c1b4 /doc/JSON-RPC-interface.md | |
| parent | 643b25d093a959b2176a7ace810a7d44267ca2e9 (diff) | |
doc: Add external interface consistency guarantees
Diffstat (limited to 'doc/JSON-RPC-interface.md')
| -rw-r--r-- | doc/JSON-RPC-interface.md | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/doc/JSON-RPC-interface.md b/doc/JSON-RPC-interface.md new file mode 100644 index 0000000000..59df541567 --- /dev/null +++ b/doc/JSON-RPC-interface.md @@ -0,0 +1,38 @@ +# JSON-RPC Interface + +The headless daemon `bitcoind` has the JSON-RPC API enabled by default, the GUI +`bitcoin-qt` has it disabled by default. This can be changed with the `-server` +option. In the GUI it is possible to execute RPC methods in the Debug Console +Dialog. + +## RPC consistency guarantees + +State that can be queried via RPCs is guaranteed to be at least up-to-date with +the chain state immediately prior to the call's execution. However, the state +returned by RPCs that reflect the mempool may not be up-to-date with the +current mempool state. + +### Transaction Pool + +The mempool state returned via an RPC is consistent with itself and with the +chain state at the time of the call. Thus, the mempool state only encompasses +transactions that are considered mine-able by the node at the time of the RPC. + +The mempool state returned via an RPC reflects all effects of mempool and chain +state related RPCs that returned prior to this call. + +### Wallet + +The wallet state returned via an RPC is consistent with itself and with the +chain state at the time of the call. + +Wallet RPCs will return the latest chain state consistent with prior non-wallet +RPCs. The effects of all blocks (and transactions in blocks) at the time of the +call is reflected in the state of all wallet transactions. For example, if a +block contains transactions that conflicted with mempool transactions, the +wallet would reflect the removal of these mempool transactions in the state. + +However, the wallet may not be up-to-date with the current state of the mempool +or the state of the mempool by an RPC that returned before this RPC. For +example, a wallet transaction that was BIP-125-replaced in the mempool prior to +this RPC may not yet be reflected as such in this RPC response. |