net

type ErrPortBusy ¶ added in v1.4.1

type ErrPortBusy struct {
	Port int
	Err  error
}

func (err *ErrPortBusy) Error() string

type ErrPortFileLocked ¶ added in v1.4.1

type ErrPortFileLocked int

func (port ErrPortFileLocked) Error() string

type ListenRangeConfig ¶

type ListenRangeConfig struct {
	// like "tcp" or "udp". defaults to "tcp".
	Network  string
	Addr     string
	Min, Max int
	net.ListenConfig
}

ListenRangeConfig contains options for listening to a free address [Min,Max) range. ListenRangeConfig wraps a net.ListenConfig.

func (lc ListenRangeConfig) Listen(ctx context.Context) (*Listener, error)

type Listener ¶

type Listener struct {
	// Listener can be closed but Port will be file locked by packer until
	// Close is called.
	net.Listener
	Port    int
	Address string
	// contains filtered or unexported fields
}

Listener wraps a net.Lister with some magic packer capabilies. For example until you call Listener.Close, any call to ListenRangeConfig.Listen cannot bind to Port. Packer tries tells moving parts which port they can use, but often the port has to be released before a 3rd party is started, like a VNC server.

func (l *Listener) Close() error