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discard """
file: "tasyncawait.nim"
output: "5000"
"""
import asyncdispatch, rawsockets, net, strutils, os
var msgCount = 0
const
swarmSize = 50
messagesToSend = 100
var clientCount = 0
proc sendMessages(client: TAsyncFD) {.async.} =
for i in 0 .. <messagesToSend:
await send(client, "Message " & $i & "\c\L")
proc launchSwarm(port: TPort) {.async.} =
for i in 0 .. <swarmSize:
var sock = newAsyncRawSocket()
await connect(sock, "localhost", port)
when true:
await sendMessages(sock)
closeSocket(sock)
else:
# Issue #932: https://github.com/Araq/Nim/issues/932
var msgFut = sendMessages(sock)
msgFut.callback =
proc () =
closeSocket(sock)
proc readMessages(client: TAsyncFD) {.async.} =
while true:
var line = await recvLine(client)
if line == "":
closeSocket(client)
clientCount.inc
break
else:
if line.startswith("Message "):
msgCount.inc
else:
doAssert false
proc createServer(port: TPort) {.async.} =
var server = newAsyncRawSocket()
block:
var name: Sockaddr_in
when defined(windows):
name.sin_family = toInt(AF_INET).int16
else:
name.sin_family = toInt(AF_INET)
name.sin_port = htons(int16(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:
var client = await accept(server)
asyncCheck readMessages(client)
# TODO: Test: readMessages(disp, await disp.accept(server))
asyncCheck createServer(TPort(10335))
asyncCheck launchSwarm(TPort(10335))
while true:
poll()
if clientCount == swarmSize: break
assert msgCount == swarmSize * messagesToSend
echo msgCount
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