package main import ( "log" "net" ) type Config struct { portName string baudRate int dataBits int stopBits int parityBit int outputCode string inputCode string endStr string enableLog bool logFilePath string forWard int frameSize int address string } type FoeWardMode int const ( NOT FoeWardMode = iota TCPC UDPC ) var config Config func setForWardClient() (conn net.Conn) { switch FoeWardMode(config.forWard) { case TCPC: conn, err = net.Dial("tcp", config.address) if err != nil { log.Fatal(err) } case UDPC: conn, err = net.Dial("udp", config.address) if err != nil { log.Fatal(err) } default: panic("未知模式设置") } return conn }