json - JSONRPC server returns empty result -

i've coded simple jsonrpc server test go's capabilities, i'm stuck, getting empty result, without error , correct id. i've got following go code: package main

import (     "log"     "net"     "net/rpc"     "net/rpc/jsonrpc" )  type experiment int  func (e *experiment) test(i *string, reply *string) error {     s := "hello, " + *i     reply = &s     log.println(s, reply)     return nil }  func main() {     exp := new(experiment)     server := rpc.newserver()     server.register(exp)     l, err := net.listen("tcp", ":1234")     if err != nil {         log.fatal("listen error:", err)     }     {         conn, err := l.accept()         if err != nil {             log.fatal(err)         }         server.servecodec(jsonrpc.newservercodec(conn))     } } 

no matter tried, i've got following response:

{"id":1,"result":"","error":null} 

logging shows working should in server.

2013/07/17 15:17:13 hello, paulo 0xc200090ac0 

any ideas on what's going on? i'm using latest stable version of go, v1.1.1

thanks

your reply of type pointer string. okay , required second argument used return answer. do:

s := "hello, " + *i reply = &s 

which translates to:

• construct new string new value.
• let reply point new string

this lets string returned unaffected. try

*reply = s