tests/async/tasyncsend4757.nim


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import asyncdispatch, asyncnet

var port: Port
proc createServer() {.async.} =
  var server = newAsyncSocket()
  server.setSockOpt(OptReuseAddr, true)
  bindAddr(server)
  port = getLocalAddr(server)[1]
  server.listen()
  while true:
    let client = await server.accept()
    discard await client.recvLine()

asyncCheck createServer()

var done = false
proc f(): Future[void] {.async.} =
  let s = createAsyncNativeSocket()
  await s.connect("localhost", port)
  await s.send("123")
  done = true

waitFor f()
doAssert done