// The port number for incoming peer connections. 0 if the client isn't
// listening.
func (cl *Client) incomingPeerPort() int {
if cl.listenAddr == "" {
return 0
}
_, port, err := missinggo.ParseHostPort(cl.listenAddr)
if err != nil {
panic(err)
}
return port
}
// Clears the named cookie for every domain that leads to the current one.
func NukeCookie(w http.ResponseWriter, r *http.Request, name, path string) {
parts := strings.Split(missinggo.ParseHostPort(r.Host).Host, ".")
for i := range iter.N(len(parts) + 1) { // Include the empty domain.
http.SetCookie(w, &http.Cookie{
Name: name,
MaxAge: -1,
Path: path,
Domain: strings.Join(parts[i:], "."),
})
}
}
// Listen to enabled protocols, ensuring ports match.
func listen(tcp, utp bool, networkSuffix, addr string) (tcpL net.Listener, utpSock *utp.Socket, listenedAddr string, err error) {
if addr == "" {
addr = ":50007"
}
host, port, err := missinggo.ParseHostPort(addr)
if err != nil {
return
}
if tcp && utp && port == 0 {
// If both protocols are active, they need to have the same port.
return listenBothSameDynamicPort(networkSuffix, host)
}
defer func() {
if err != nil {
listenedAddr = ""
}
}()
if tcp {
tcpL, err = listenTCP(networkSuffix, addr)
if err != nil {
return
}
defer func() {
if err != nil {
tcpL.Close()
}
}()
listenedAddr = tcpL.Addr().String()
}
if utp {
utpSock, err = listenUTP(networkSuffix, addr)
if err != nil {
return
}
listenedAddr = utpSock.Addr().String()
}
return
}