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client.go
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client.go
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package main
import (
"crypto/tls"
"io"
"log"
"net"
"os"
"github.com/docker/libchan"
"github.com/docker/libchan/spdy"
)
// RemoteCommand is the run parameters to be executed remotely
type RemoteCommand struct {
Cmd string
Args []string
Stdin io.Writer
Stdout io.Reader
Stderr io.Reader
StatusChan libchan.Sender
}
// CommandResponse is the returned response object from the remote execution
type CommandResponse struct {
Status int
}
func main() {
if len(os.Args) < 2 {
log.Fatal("usage: <command> [<arg> ]")
}
var client net.Conn
var err error
if os.Getenv("USE_TLS") != "" {
client, err = tls.Dial("tcp", "127.0.0.1:9323", &tls.Config{InsecureSkipVerify: true})
} else {
client, err = net.Dial("tcp", "127.0.0.1:9323")
}
if err != nil {
log.Fatal(err)
}
transport, err := spdy.NewClientTransport(client)
if err != nil {
log.Fatal(err)
}
sender, err := transport.NewSendChannel()
if err != nil {
log.Fatal(err)
}
receiver, remoteSender := libchan.Pipe()
command := &RemoteCommand{
Cmd: os.Args[1],
Args: os.Args[2:],
Stdin: os.Stdin,
Stdout: os.Stdout,
Stderr: os.Stderr,
StatusChan: remoteSender,
}
err = sender.Send(command)
if err != nil {
log.Fatal(err)
}
response := &CommandResponse{}
err = receiver.Receive(response)
if err != nil {
log.Fatal(err)
}
os.Exit(response.Status)
}