// This is a low-level function that is not supposed to be called directly
// by the user. Change this if the MessagePack protocol is updated.
func ReceiveResponse(reader io.Reader) (int, reflect.Value, *Error) {
data, _, err := msgpack.UnpackReflected(reader)
if err != nil {
return 0, nil, &Error{nil, "Error occurred while receiving a response"}
}
msgId, result, _err := HandleRPCResponse(data)
if _err != nil {
return 0, nil, _err
}
return msgId, result, nil
}
// Goes into the event loop to get ready to serve.
func (self *Server) Run() *Server {
lchan := make(chan int)
self.listeners.Do(func(listener interface{}) {
_listener := listener.(net.Listener)
go (func() {
for {
conn, err := _listener.Accept()
if err != nil {
self.log.Println(err.String())
continue
}
if self.lchan == nil {
conn.Close()
break
}
go (func() {
for {
data, _, err := msgpack.UnpackReflected(conn)
var arguments, retvals []reflect.Value
if err == os.EOF {
break
} else if err != nil {
self.log.Println(err.String())
break
}
msgId, funcName, _arguments, xerr := HandleRPCRequest(data)
if xerr != nil {
self.log.Println(xerr.String())
break
}
f, xerr := self.resolver.Resolve(funcName, _arguments)
if xerr != nil {
msg := xerr.String()
self.log.Println(msg)
SendErrorResponseMessage(conn, msgId, msg)
}
funcType := f.Type()
if funcType.NumIn() != len(_arguments) {
msg := fmt.Sprintf("The number of the given arguments (%d) doesn't match the arity (%d)", len(_arguments), funcType.NumIn())
self.log.Println(msg)
SendErrorResponseMessage(conn, msgId, msg)
goto next
}
if funcType.NumOut() != 1 && funcType.NumOut() != 2 {
self.log.Println("The number of return values must be 1 or 2")
SendErrorResponseMessage(conn, msgId, "Internal server error")
goto next
}
if self.autoCoercing {
arguments = make([]reflect.Value, funcType.NumIn())
for i, v := range _arguments {
ft := funcType.In(i)
vt := v.Type()
if ft == vt {
arguments[i] = v
} else {
if ft != nil {
_vt := v.Type()
if _vt.Kind() == reflect.Array || _vt.Kind() == reflect.Slice {
et := _vt.Elem()
if et != nil && et.Kind() == reflect.Uint8 {
arguments[i] = reflect.ValueOf(string(v.Interface().([]byte)))
continue
}
}
}
msg := fmt.Sprintf("The type of argument #%d doesn't match (%s expected, got %s)", i, ft.String(), vt.String())
self.log.Println(msg)
SendErrorResponseMessage(conn, msgId, msg)
goto next
}
}
} else {
for i, v := range _arguments {
ft := funcType.In(i)
vt := v.Type()
if ft != vt {
msg := fmt.Sprintf("The type of argument #%d doesn't match (%s expected, got %s)", i, ft.String(), vt.String())
self.log.Println(msg)
SendErrorResponseMessage(conn, msgId, msg)
goto next
}
}
arguments = _arguments
}
retvals = f.Call(arguments)
if funcType.NumOut() == 2 {
var errMsg stringizable = nil
var ok bool
_errMsg := retvals[1].Interface()
if _errMsg != nil {
errMsg, ok = _errMsg.(stringizable)
if !ok {
self.log.Println("The second argument must have an interface { String() string }")
SendErrorResponseMessage(conn, msgId, "Internal server error")
goto next
}
}
if errMsg == nil {
if self.autoCoercing {
_retval := retvals[0]
if _retval.Kind() == reflect.String {
retvals[0] = reflect.ValueOf([]byte(_retval.String()))
}
}
SendResponseMessage(conn, msgId, retvals[0])
} else {
SendErrorResponseMessage(conn, msgId, errMsg.String())
}
} else {
SendResponseMessage(conn, msgId, retvals[0])
}
next:
}
conn.Close()
})()
}
})()
})
self.lchan = lchan
<-lchan
self.listeners.Do(func(listener interface{}) {
listener.(net.Listener).Close()
})
return self
}
