I took and adapted the example from Golang RPC to make a simple RPC server as a test run for the real task I want to acheive. But whatever I have tried I end up with the client getting
2014/03/21 13:28:41 dialing: dial-http tcp MYPC:61740: unexpected HTTP response: 404 Not Found
I have tried using MYPC:0, 127.0.0.1:61470, MYPC:61470 and other variants of that theme for the server. Also have tried locally and on two different computers (Note I am using Go 1.2 on Windows). Usually with Go I find it straight-forward to debug, but even reading the source for the rpc pacakge is not helping this time - however I did pick up the trick of :0 giving an available port.
Server can be run by just running the exe, and Client can be run with the port output by the server chat -c -server=127.0.0.1:8082.
What is actually wrong with the following code?
package main
import (
"flag"
"log"
"net"
"net/http"
"net/rpc"
)
type Chat string
func (t *Chat) Msg(msg string, bytes *int) error {
*bytes = len(msg)
return nil
}
func main() {
server := flag.String("server", "", "Server and port")
client := flag.Bool("c", false, "Make me a client")
flag.Parse()
log.Println("Server: ", *server)
if !(*client) {
chat := new(Chat)
rpc.Register(chat)
l, e := net.Listen("tcp", *server)
if e != nil {
log.Fatal("listen error:", e)
}
log.Println(l.Addr().String())
go rpc.Accept(l)
http.Serve(l, nil)
} else {
log.Println("Client connecting to", *server)
// !! The error occurs here
client, err := rpc.DialHTTP("tcp", *server)
if err != nil {
log.Fatal("dialing: ", err)
}
var reply int
err = client.Call("Chat.Msg", "Make it so!", &reply)
if err != nil {
log.Fatal("chat error:", err)
}
log.Println("Msg: returned", reply)
}
}
