nim-libp2p/libp2p/protocols/perf/server.nim

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# Nim-LibP2P
# Copyright (c) 2023 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
# * MIT license ([LICENSE-MIT](LICENSE-MIT))
# at your option.
# This file may not be copied, modified, or distributed except according to
# those terms.
## `Perf <https://github.com/libp2p/specs/blob/master/perf/perf.md>`_ protocol specification
{.push raises: [].}
import chronos, chronicles
import stew/endians2
import ./core, ../protocol, ../../stream/connection, ../../utility
export chronicles, connection
logScope:
topics = "libp2p perf"
type Perf* = ref object of LPProtocol
proc new*(T: typedesc[Perf]): T {.public.} =
var p = T()
proc handle(conn: Connection, proto: string) {.async.} =
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var bytesRead = 0
try:
trace "Received benchmark performance check", conn
var
sizeBuffer: array[8, byte]
size: uint64
await conn.readExactly(addr sizeBuffer[0], 8)
size = uint64.fromBytesBE(sizeBuffer)
var toReadBuffer: array[PerfSize, byte]
try:
while true:
bytesRead += await conn.readOnce(addr toReadBuffer[0], PerfSize)
except CatchableError as exc:
discard
var buf: array[PerfSize, byte]
while size > 0:
let toWrite = min(size, PerfSize)
await conn.write(buf[0 ..< toWrite])
size -= toWrite
except CancelledError as exc:
raise exc
except CatchableError as exc:
trace "exception in perf handler", exc = exc.msg, conn
await conn.close()
p.handler = handle
p.codec = PerfCodec
return p