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Make encodeStateAsUpdate deterministic

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This commit is contained in:
Adam Chelminski 2022-06-23 15:50:35 +02:00
parent 1bc9308566
commit da052bdb0a
1 changed files with 15 additions and 11 deletions
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26
src/utils/DeleteSet.js
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@ -219,17 +219,21 @@ export const createDeleteSetFromStructStore = ss => {
*/
export const writeDeleteSet = (encoder, ds) => {
encoding.writeVarUint(encoder.restEncoder, ds.clients.size)
ds.clients.forEach((dsitems, client) => {
encoder.resetDsCurVal()
encoding.writeVarUint(encoder.restEncoder, client)
const len = dsitems.length
encoding.writeVarUint(encoder.restEncoder, len)
for (let i = 0; i < len; i++) {
const item = dsitems[i]
encoder.writeDsClock(item.clock)
encoder.writeDsLen(item.len)
}
})
// Ensure that the delete set is written in a deterministic order
Array.from(ds.clients.entries())
.sort((clientA, clientB) => clientB[0] - clientA[0])
.forEach(([client, dsitems]) => {
encoder.resetDsCurVal()
encoding.writeVarUint(encoder.restEncoder, client)
const len = dsitems.length
encoding.writeVarUint(encoder.restEncoder, len)
for (let i = 0; i < len; i++) {
const item = dsitems[i]
encoder.writeDsClock(item.clock)
encoder.writeDsLen(item.len)
}
})
}
/**