69 lines
1.7 KiB
Go
69 lines
1.7 KiB
Go
// Package tunnel provides gre network tunnelling
|
|
package tunnel
|
|
|
|
import (
|
|
"errors"
|
|
"time"
|
|
|
|
"github.com/micro/go-micro/transport"
|
|
)
|
|
|
|
var (
|
|
// ErrDialTimeout is returned by a call to Dial where the timeout occurs
|
|
ErrDialTimeout = errors.New("dial timeout")
|
|
// DefaultDialTimeout is the dial timeout if none is specified
|
|
DefaultDialTimeout = time.Second * 5
|
|
)
|
|
|
|
// Tunnel creates a gre tunnel on top of the go-micro/transport.
|
|
// It establishes multiple streams using the Micro-Tunnel-Channel header
|
|
// and Micro-Tunnel-Session header. The tunnel id is a hash of
|
|
// the address being requested.
|
|
type Tunnel interface {
|
|
Init(opts ...Option) error
|
|
// Address the tunnel is listening on
|
|
Address() string
|
|
// Connect connects the tunnel
|
|
Connect() error
|
|
// Close closes the tunnel
|
|
Close() error
|
|
// Connect to a channel
|
|
Dial(channel string, opts ...DialOption) (Session, error)
|
|
// Accept connections on a channel
|
|
Listen(channel string) (Listener, error)
|
|
// All the links the tunnel is connected to
|
|
Links() []Link
|
|
// Name of the tunnel implementation
|
|
String() string
|
|
}
|
|
|
|
// Link represents internal links to the tunnel
|
|
type Link interface {
|
|
// The id of the link
|
|
Id() string
|
|
// honours transport socket
|
|
transport.Socket
|
|
}
|
|
|
|
// The listener provides similar constructs to the transport.Listener
|
|
type Listener interface {
|
|
Accept() (Session, error)
|
|
Channel() string
|
|
Close() error
|
|
}
|
|
|
|
// Session is a unique session created when dialling or accepting connections on the tunnel
|
|
type Session interface {
|
|
// The unique session id
|
|
Id() string
|
|
// The channel name
|
|
Channel() string
|
|
// a transport socket
|
|
transport.Socket
|
|
}
|
|
|
|
// NewTunnel creates a new tunnel
|
|
func NewTunnel(opts ...Option) Tunnel {
|
|
return newTunnel(opts...)
|
|
}
|