module test_client

import StdEnv
import StdMaybe
import TCPIP

clientConnect :: !*World -> (!TCP_DuplexChannel, !*World)
clientConnect w
# (mbIPAddr, w) = lookupIPAddress "localhost" w
| isNothing mbIPAddr = abort "DNS lookup failed\n"
# ipAddr = fromJust mbIPAddr
# (tReport, mbDuplex, w) = connectTCP_MT Nothing (ipAddr, 12345) w
| tReport <> TR_Success = abort "Can't connect to port 12345\n"
# duplexChannel = fromJust mbDuplex
# (sChannel, w) = send (toByteSeq "Hello world!\n") duplexChannel.sChannel w
  duplexChannel = {duplexChannel & sChannel=sChannel}
= (duplexChannel, w)

Start w = clientConnect w