// ForHostname creates a new default messenger (HTTP), using UPIDBindingAddress to
// determine the binding-address used for both the UPID.Host and Transport binding address.
func ForHostname(proc *process.Process, hostname string, bindingAddress net.IP, port uint16, publishedAddress net.IP) (Messenger, error) {
upid := upid.UPID{
ID: proc.Label(),
Port: strconv.Itoa(int(port)),
}
host, err := UPIDBindingAddress(hostname, bindingAddress)
if err != nil {
return nil, err
}
var publishedHost string
if publishedAddress != nil {
publishedHost, err = UPIDBindingAddress(hostname, publishedAddress)
if err != nil {
return nil, err
}
}
if publishedHost != "" {
upid.Host = publishedHost
} else {
upid.Host = host
}
return NewHttpWithBindingAddress(upid, bindingAddress), nil
}
// create a new default messenger (HTTP). If a non-nil, non-wildcard bindingAddress is
// specified then it will be used for both the UPID and Transport binding address. Otherwise
// hostname is resolved to an IP address and the UPID.Host is set to that address and the
// bindingAddress is passed through to the Transport.
func ForHostname(proc *process.Process, hostname string, bindingAddress net.IP, port uint16) (Messenger, error) {
upid := &upid.UPID{
ID: proc.Label(),
Port: strconv.Itoa(int(port)),
}
if bindingAddress != nil && "0.0.0.0" != bindingAddress.String() {
upid.Host = bindingAddress.String()
} else {
ips, err := net.LookupIP(hostname)
if err != nil {
return nil, err
}
// try to find an ipv4 and use that
ip := net.IP(nil)
for _, addr := range ips {
if ip = addr.To4(); ip != nil {
break
}
}
if ip == nil {
// no ipv4? best guess, just take the first addr
if len(ips) > 0 {
ip = ips[0]
log.Warningf("failed to find an IPv4 address for '%v', best guess is '%v'", hostname, ip)
} else {
return nil, fmt.Errorf("failed to determine IP address for host '%v'", hostname)
}
}
upid.Host = ip.String()
}
return NewHttpWithBindingAddress(upid, bindingAddress), nil
}
// ForHostname creates a new default messenger (HTTP), using UPIDBindingAddress to
// determine the binding-address used for both the UPID.Host and Transport binding address.
func ForHostname(proc *process.Process, hostname string, bindingAddress net.IP, port uint16) (Messenger, error) {
upid := &upid.UPID{
ID: proc.Label(),
Port: strconv.Itoa(int(port)),
}
host, err := UPIDBindingAddress(hostname, bindingAddress)
if err != nil {
return nil, err
}
upid.Host = host
return NewHttpWithBindingAddress(upid, bindingAddress), nil
}