// Fork a bot and open a TCP connection to it
func setupBot(conf ttypes.BotConf, portNumber int) *net.TCPConn {
addrString := "127.0.0.1:" + strconv.Itoa(portNumber)
fd := []*os.File{os.Stdin, os.Stdout, os.Stderr}
_, err := os.StartProcess(conf.Path, []string{addrString}, nil, "", fd)
easynet.DieIfError(err, "Error launching bot")
return easynet.Dial(addrString)
}
// Set up incoming and outgoing TCP connections to all adjacent coordinators
func connectToAdjacents(listener *net.TCPListener) chan bool {
adjsServe = make(CoordMap, len(config.AdjacentCoords))
adjsRequest = make(CoordMap, len(config.AdjacentCoords))
listenServe = make(chan []uint8)
serveFound := make(chan int)
requestFound := make(chan int)
allDone := make(chan bool)
go func() {
for _, adj := range config.AdjacentCoords {
go func() {
adjsRequest[adj.Identifier] = easynet.Dial(adj.Address)
adjsRequest[adj.Identifier].Write([]uint8(strconv.Itoa(config.Identifier)))
requestFound <- adj.Identifier
}()
go func() {
newConn := easynet.Accept(listener)
identifier, err := strconv.Atoi(string(easynet.ReceiveFrom(newConn)))
easynet.DieIfError(err, "String conversion error")
adjsServe[identifier] = newConn
easynet.TieConnToChannel(newConn, listenServe)
serveFound <- identifier
}()
}
for i := 0; i < len(config.AdjacentCoords); i++ {
<-requestFound
<-serveFound
}
fmt.Printf("%d is connected to all neighbors\n", config.Identifier)
allDone <- true
}()
return allDone
}