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package main
import (
"log"
"net"
)
type tcpAddr struct {
addr *net.TCPAddr
net string
}
// tcpParseSockStr extracts the host and port from a string.
// The format is "Host:Port", "Host", or ":Port" as well as an empty string.
func tcpParseSockStr(netStr, sockStr string) tcpAddr {
var s tcpAddr
s.net = netStr
sockStr = parseNetStr(s.net == "tcp6", sockStr)
a, err := net.ResolveTCPAddr(netStr, sockStr)
if err != nil {
log.Fatalf("Error parsing socket string '%s': %v", sockStr, err)
}
s.addr = a
return s
}
func (s tcpAddr) String() string {
return s.net + "://" + s.addr.String()
}
// Dial connects on a TCP socket
func (s tcpAddr) Dial(conid int) (Conn, error) {
c, err := net.Dial(s.net, s.addr.String())
if err != nil {
return nil, err
}
return c.(*net.TCPConn), err
}
// Listen returns a net.Listener for a given TCP socket
func (s tcpAddr) Listen() net.Listener {
l, err := net.Listen(s.net, s.addr.String())
if err != nil {
log.Fatalln("Listen():", err)
}
return l
}
// ListenPacket is not implemented for TCP
func (s tcpAddr) ListenPacket() net.PacketConn {
log.Fatalln("ListenPacket(): not implemented for TCP")
return nil
}
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