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cosmos-sdk/x/ibc-transfer/spec/01_concepts.md

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Update IBC events docs and code (#6798) * update msgs type from opaque * update spec for createclient * update events spec for handshake cals * update packet events for spec and code * add relayer events doc * update ibc-transfer events * fix build * small fix from self review * update channel msgs types * acknowledgement_packet -> acknowledge_packet * Apply suggestions from code review Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com> * fix spec issues for ibc and ibc-transfer * add golang relayer link Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com>
2020-07-21 09:56:14 -07:00
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# Concepts
Add standard acknowledgement to channels and apply usage in ibc transfer (#7263) * gen ack proto type * remove transfer ack * change ics20 ack to use standard type * update commented tests * small typo fix * revert back to module cdc * update docs * fix lint * nit * update ack event emission * Update x/ibc-transfer/spec/01_concepts.md * add comment for onacknowledgement * Update proto/ibc/channel/channel.proto Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Christopher Goes <cwgoes@pluranimity.org>
2020-09-09 03:01:28 -07:00
## Acknowledgements
ICS20 uses the recommended acknowledgement format as specified by [ICS 04](https://github.com/cosmos/ics/tree/master/spec/ics-004-channel-and-packet-semantics#acknowledgement-envelope).
A successful receive of a transfer packet will result in a Result Acknowledgement being written
with the value `[]byte(byte(1))` in the `Response` field.
An unsuccessful receive of a transfer packet will result in an Error Acknowledgement being written
with the error message in the `Response` field.