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avoid triple lookup in `m.flushed` yamux table (#1045)

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Etan Kissling 2024-03-04 00:27:13 +01:00 committed by GitHub
parent 18e00a741b
commit 8cccd54125
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1 changed files with 14 additions and 10 deletions
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24
libp2p/muxers/yamux/yamux.nim
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@ -516,16 +516,20 @@ method handle*(m: Yamux) {.async.} =
await newStream.open()
asyncSpawn m.handleStream(newStream)
elif header.streamId notin m.channels:
if header.streamId notin m.flushed:
raise newException(YamuxError, "Unknown stream ID: " & $header.streamId)
elif header.msgType == Data:
# Flush the data
m.flushed[header.streamId].dec(int(header.length))
if m.flushed[header.streamId] < 0:
raise newException(YamuxError, "Peer exhausted the recvWindow after reset")
if header.length > 0:
var buffer = newSeqUninitialized[byte](header.length)
await m.connection.readExactly(addr buffer[0], int(header.length))
# Flush the data
m.flushed.withValue(header.streamId, flushed):
if header.msgType == Data:
flushed[].dec(int(header.length))
if flushed[] < 0:
raise newException(YamuxError,
"Peer exhausted the recvWindow after reset")
do:
raise newException(YamuxError,
"Unknown stream ID: " & $header.streamId)
if header.length > 0:
var buffer = newSeqUninitialized[byte](header.length)
await m.connection.readExactly(
addr buffer[0], int(header.length))
continue
let channel =