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fix: PeerExchange rpc decode in order not to take response's status_code mandatory - for support old protocol implementation #3059

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Sep 25, 2024
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fix: PeerExchange rpc decode in order not to take response's status_code mandatory - for support old protocol implementation #3059

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4 changes: 3 additions & 1 deletion waku/waku_peer_exchange/protocol.nim
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Original file line number Diff line number Diff line change
Expand Up @@ -217,7 +217,9 @@ proc populateEnrCache(wpx: WakuPeerExchange) =

proc updatePxEnrCache(wpx: WakuPeerExchange) {.async.} =
# try more aggressively to fill the cache at startup
while wpx.enrCache.len < MaxPeersCacheSize:
var attempts = 10
while wpx.enrCache.len < MaxPeersCacheSize and attempts > 0:
attempts -= 1
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wpx.populateEnrCache()
await sleepAsync(5.seconds)

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6 changes: 5 additions & 1 deletion waku/waku_peer_exchange/rpc_codec.nim
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Original file line number Diff line number Diff line change
Expand Up @@ -71,7 +71,11 @@ proc decode*(T: type PeerExchangeResponse, buffer: seq[byte]): ProtobufResult[T]
if ?pb.getField(10, status_code):
rpc.status_code = PeerExchangeResponseStatusCode.parse(status_code)
else:
return err(ProtobufError.missingRequiredField("status_code"))
# older peers may not support status_code field yet
if rpc.peerInfos.len() > 0:
rpc.status_code = PeerExchangeResponseStatusCode.SUCCESS
else:
rpc.status_code = PeerExchangeResponseStatusCode.SERVICE_UNAVAILABLE

var status_desc: string
if ?pb.getField(11, status_desc):
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