client.go

package gtcp

import "net"

func getConn(addr string) (*net.TCPConn, error) {
	tcpAddr, err := net.ResolveTCPAddr("tcp4", addr)
	if err != nil {
		return nil, err
	}
	conn, err := net.DialTCP("tcp", nil, tcpAddr)
	if err != nil {
		return nil, err
	}
	return conn, nil
}

// DialTCP: dial an address and return a TCPConn, maybe something wrong and return a err.
func DialTCP(addr string) (*TCPConn, error) {

	conn, err := getConn(addr)
	if err != nil {
		conn.Close()
		return nil, err
	}
	tcpConn := GetTCPConn(conn)
	return tcpConn, nil
}

// DialTCPCtrl: dial an address and return a TCPCtrl, maybe something wrong and return err.
func DialTCPCtrl(addr string, actor Actor) (*TCPCtrl, error) {
	conn, err := getConn(addr)
	if err != nil {
		conn.Close()
		return nil, err
	}
	tcpConn := GetTCPConn(conn)
	tcpCtrl := GetTCPCtrl(actor)
	tcpCtrl.InstallTCPConn(tcpConn)
	return tcpCtrl, err
}