micro/tunnel/tunnel.go

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// Package tunnel provides gre network tunnelling
package tunnel
import (
"github.com/micro/go-micro/transport"
)
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// Tunnel creates a gre network tunnel on top of a link.
// It establishes multiple streams using the Micro-Tunnel-Id header
// and Micro-Tunnel-Session header. The tunnel id is a hash of
// the address being requested.
type Tunnel interface {
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Init(opts ...Option) error
// Connect connects the tunnel
Connect() error
// Close closes the tunnel
Close() error
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// Dial an endpoint
Dial(addr string) (Conn, error)
// Accept connections
Listen(addr string) (Listener, error)
}
// The listener provides similar constructs to the transport.Listener
type Listener interface {
Addr() string
Close() error
Accept() (Conn, error)
}
// Conn is a connection dialed or accepted which includes the tunnel id and session
type Conn interface {
// Specifies the tunnel id
Id() string
// The session
Session() string
// a transport socket
transport.Socket
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}
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// NewTunnel creates a new tunnel
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func NewTunnel(opts ...Option) Tunnel {
return newTunnel(opts...)
}