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proxy.go
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/
proxy.go
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package app
import (
"errors"
"io"
"net"
"golang.org/x/net/proxy"
"github.com/caddyserver/caddy/v2"
"github.com/imgk/caddy-trojan/trojan"
)
func init() {
caddy.RegisterModule(NoProxy{})
caddy.RegisterModule(EnvProxy{})
}
// Proxy is ...
type Proxy interface {
// Handle is ...
Handle(r io.Reader, w io.Writer) (int64, int64, error)
// Closer is ...
io.Closer
}
// NoProxy is ...
type NoProxy struct{}
// CaddyModule is ...
func (NoProxy) CaddyModule() caddy.ModuleInfo {
return caddy.ModuleInfo{
ID: "trojan.proxies.no_proxy",
New: func() caddy.Module { return new(NoProxy) },
}
}
// Handle is ...
func (*NoProxy) Handle(r io.Reader, w io.Writer) (int64, int64, error) {
return trojan.Handle(r, w)
}
// Close is ...
func (*NoProxy) Close() error {
return nil
}
// EnvProxy is ...
type EnvProxy struct {
proxy.Dialer `json:"-,omitempty"`
}
// CaddyModule is ...
func (EnvProxy) CaddyModule() caddy.ModuleInfo {
return caddy.ModuleInfo{
ID: "trojan.proxies.env_proxy",
New: func() caddy.Module { return new(EnvProxy) },
}
}
// Provision is ...
func (p *EnvProxy) Provision(ctx caddy.Context) error {
p.Dialer = proxy.FromEnvironment()
return nil
}
// Handle is ...
func (p *EnvProxy) Handle(r io.Reader, w io.Writer) (int64, int64, error) {
return trojan.HandleWithDialer(r, w, p)
}
// Close is ...
func (*EnvProxy) Close() error {
return nil
}
// ListenPacket is ...
func (*EnvProxy) ListenPacket(network, addr string) (net.PacketConn, error) {
return nil, errors.New("proxy from environment does not support UDP")
}
var (
_ Proxy = (*NoProxy)(nil)
_ caddy.Provisioner = (*EnvProxy)(nil)
_ Proxy = (*EnvProxy)(nil)
)