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discard """
outputsub: "result: 5000"
cmd: "nim c --gc:arc $file"
"""
import asyncdispatch, asyncnet, nativesockets, net, strutils, os
var msgCount = 0
const
swarmSize = 50
messagesToSend = 100
var clientCount = 0
proc sendMessages(client: AsyncFD) {.async.} =
for i in 0 ..< messagesToSend:
await send(client, "Message " & $i & "\c\L")
proc launchSwarm(port: Port) {.async.} =
for i in 0 ..< swarmSize:
var sock = createAsyncNativeSocket()
await connect(sock, "localhost", port)
await sendMessages(sock)
closeSocket(sock)
proc readMessages(client: AsyncFD) {.async.} =
# wrapping the AsyncFd into a AsyncSocket object
var sockObj = newAsyncSocket(client)
var (ipaddr, port) = sockObj.getPeerAddr()
doAssert ipaddr == "127.0.0.1"
(ipaddr, port) = sockObj.getLocalAddr()
doAssert ipaddr == "127.0.0.1"
while true:
var line = await recvLine(sockObj)
if line == "":
closeSocket(client)
clientCount.inc
break
else:
if line.startswith("Message "):
msgCount.inc
else:
doAssert false
proc createServer(port: Port) {.async.} =
var server = createAsyncNativeSocket()
block:
var name: Sockaddr_in
name.sin_family = typeof(name.sin_family)(toInt(AF_INET))
name.sin_port = htons(uint16(port))
name.sin_addr.s_addr = htonl(INADDR_ANY)
if bindAddr(server.SocketHandle, cast[ptr SockAddr](addr(name)),
sizeof(name).Socklen) < 0'i32:
raiseOSError(osLastError())
discard server.SocketHandle.listen()
while true:
asyncCheck readMessages(await accept(server))
proc main =
asyncCheck createServer(Port(10335))
asyncCheck launchSwarm(Port(10335))
while true:
poll()
if clientCount == swarmSize: break
let mem = getOccupiedMem()
main()
assert msgCount == swarmSize * messagesToSend
echo "result: ", msgCount
echo "memory: ", formatSize(getOccupiedMem() - mem)
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