如何使用Go运行时在App Engine上的实例之间传递套接字？

Question

The Python runtime allows it by pickling the connection. Is there a similar way to share sockets using the Go runtime on classic App Engine with google.golang.org/appengine/socket?

Answer 1

The descriptor isn't exposed in the Go API: https://github.com/golang/appengine/blob/master/socket/socket_classic.go#L152

type Conn struct {
    ctx    context.Context
    desc   string
    offset int64

    prot          pb.CreateSocketRequest_SocketProtocol
    local, remote *pb.AddressPort

    readDeadline, writeDeadline time.Time // optional
}

desc is what you would need on the other side to reconstruct the socket.

It should be possible fork this library on GitHub, change the conn struct to expose the needed desc property, and then change the import to github.com/YOURUSERNAME/appengine/socket instead of appengine/socket.

It's a lot of work so if you can come up with a different way to solve this you're probably better off. Nevertheless it should be possible.