107 lines
2.6 KiB
Go
107 lines
2.6 KiB
Go
package chain
|
|
|
|
import (
|
|
"context"
|
|
"net"
|
|
|
|
"github.com/go-gost/core/chain"
|
|
"github.com/go-gost/core/connector"
|
|
"github.com/go-gost/core/dialer"
|
|
net_dialer "github.com/go-gost/x/internal/net/dialer"
|
|
)
|
|
|
|
type Transport struct {
|
|
dialer dialer.Dialer
|
|
connector connector.Connector
|
|
options chain.TransportOptions
|
|
}
|
|
|
|
func NewTransport(d dialer.Dialer, c connector.Connector, opts ...chain.TransportOption) *Transport {
|
|
tr := &Transport{
|
|
dialer: d,
|
|
connector: c,
|
|
}
|
|
for _, opt := range opts {
|
|
if opt != nil {
|
|
opt(&tr.options)
|
|
}
|
|
}
|
|
|
|
return tr
|
|
}
|
|
|
|
func (tr *Transport) Dial(ctx context.Context, addr string) (net.Conn, error) {
|
|
netd := &net_dialer.Dialer{
|
|
Interface: tr.options.IfceName,
|
|
Netns: tr.options.Netns,
|
|
}
|
|
if tr.options.SockOpts != nil {
|
|
netd.Mark = tr.options.SockOpts.Mark
|
|
}
|
|
if tr.options.Route != nil && len(tr.options.Route.Nodes()) > 0 {
|
|
netd.DialFunc = func(ctx context.Context, network, addr string) (net.Conn, error) {
|
|
return tr.options.Route.Dial(ctx, network, addr)
|
|
}
|
|
}
|
|
opts := []dialer.DialOption{
|
|
dialer.HostDialOption(tr.options.Addr),
|
|
dialer.NetDialerDialOption(netd),
|
|
}
|
|
return tr.dialer.Dial(ctx, addr, opts...)
|
|
}
|
|
|
|
func (tr *Transport) Handshake(ctx context.Context, conn net.Conn) (net.Conn, error) {
|
|
var err error
|
|
if hs, ok := tr.dialer.(dialer.Handshaker); ok {
|
|
conn, err = hs.Handshake(ctx, conn,
|
|
dialer.AddrHandshakeOption(tr.options.Addr))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
if hs, ok := tr.connector.(connector.Handshaker); ok {
|
|
return hs.Handshake(ctx, conn)
|
|
}
|
|
return conn, nil
|
|
}
|
|
|
|
func (tr *Transport) Connect(ctx context.Context, conn net.Conn, network, address string) (net.Conn, error) {
|
|
netd := &net_dialer.Dialer{
|
|
Interface: tr.options.IfceName,
|
|
Netns: tr.options.Netns,
|
|
}
|
|
if tr.options.SockOpts != nil {
|
|
netd.Mark = tr.options.SockOpts.Mark
|
|
}
|
|
return tr.connector.Connect(ctx, conn, network, address,
|
|
connector.DialerConnectOption(netd),
|
|
)
|
|
}
|
|
|
|
func (tr *Transport) Bind(ctx context.Context, conn net.Conn, network, address string, opts ...connector.BindOption) (net.Listener, error) {
|
|
if binder, ok := tr.connector.(connector.Binder); ok {
|
|
return binder.Bind(ctx, conn, network, address, opts...)
|
|
}
|
|
return nil, connector.ErrBindUnsupported
|
|
}
|
|
|
|
func (tr *Transport) Multiplex() bool {
|
|
if mux, ok := tr.dialer.(dialer.Multiplexer); ok {
|
|
return mux.Multiplex()
|
|
}
|
|
return false
|
|
}
|
|
|
|
func (tr *Transport) Options() *chain.TransportOptions {
|
|
if tr != nil {
|
|
return &tr.options
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (tr *Transport) Copy() chain.Transporter {
|
|
tr2 := &Transport{}
|
|
*tr2 = *tr
|
|
return tr
|
|
}
|