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// The forward command writes and reads to a gopls server on a network socket.
package main
import (
"context"
"flag"
"fmt"
"io"
"log"
"net"
"os"
"golang.org/x/tools/internal/lsp/cmd"
"golang.org/x/tools/internal/tool"
)
func main() {
tool.Main(context.Background(), &app{&cmd.Server{}}, os.Args[1:])
}
type app struct {
*cmd.Server
}
func (*app) Name() string { return "forward" }
func (*app) Usage() string { return "[-port=<value>]" }
func (*app) ShortHelp() string { return "An intermediary between an editor and GoLSP." }
func (*app) DetailedHelp(*flag.FlagSet) {}
func (a *app) Run(ctx context.Context, args ...string) error {
if a.Server.Port == 0 {
a.ShortHelp()
os.Exit(0)
}
conn, err := net.Dial("tcp", fmt.Sprintf(":%v", a.Server.Port))
if err != nil {
log.Print(err)
os.Exit(0)
}
go func(conn net.Conn) {
_, err := io.Copy(conn, os.Stdin)
if err != nil {
log.Print(err)
os.Exit(0)
}
}(conn)
go func(conn net.Conn) {
_, err := io.Copy(os.Stdout, conn)
if err != nil {
log.Print(err)
os.Exit(0)
}
}(conn)
for {
}
}
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