/*
* public void Break()
* {
* _excepted(new RpcException("request error",
* new SocketException((int)SocketError.TimedOut)));
* }
*/
public void ReadResult(MessageReader mr, Reader r, rpc_msg respMsg)
{
Exception resEx = null;
TResult respArgs = default(TResult);
try
{
resEx = Toolkit.ReplyMessageValidate(respMsg);
if (resEx == null)
{
respArgs = r.Read <TResult>();
mr.CheckEmpty();
}
}
catch (Exception ex)
{
resEx = ex;
}
if (resEx == null)
{
Result(respArgs);
}
else
{
Except(resEx);
}
}
/// <summary>
/// synchronous execution of an RPC request
/// </summary>
/// <typeparam name="TReq"></typeparam>
/// <typeparam name="TResp"></typeparam>
/// <param name="callBody"></param>
/// <param name="reqArgs"></param>
/// <param name="completed"></param>
/// <param name="excepted"></param>
public IDisposable Request <TReq, TResp>(call_body callBody, TReq reqArgs, Action <TResp> completed, Action <Exception> excepted)
{
Exception resEx = null;
TResp respArgs = default(TResp);
rpc_msg reqHeader = new rpc_msg()
{
xid = 0xF1E2D3C4,
body = new body()
{
mtype = msg_type.CALL,
cbody = callBody
}
};
try
{
UdpDatagram dtg = new UdpDatagram();
Writer w = Toolkit.CreateWriter(dtg);
w.Write(reqHeader);
w.Write(reqArgs);
byte[] outBuff = dtg.ToArray();
Log.Trace(() => "sending byte dump: " + outBuff.ToDisplay());
_client.Send(outBuff, outBuff.Length, _ep);
MessageReader mr = new MessageReader();
Reader r = Toolkit.CreateReader(mr);
rpc_msg respMsg;
long endTime = Stopwatch.GetTimestamp() + _timeout * System.Diagnostics.Stopwatch.Frequency / 1000;
_client.Client.ReceiveTimeout = _timeout;
while (true)
{
IPEndPoint ep = _ep;
mr.Bytes = _client.Receive(ref ep);
respMsg = r.Read <rpc_msg>();
if (respMsg.xid == reqHeader.xid)
{
break;
}
int nextTimeout = (int)((double)((endTime - Stopwatch.GetTimestamp()) * 1000) / Stopwatch.Frequency);
if (nextTimeout <= 0)
{
throw new SocketException((int)SocketError.TimedOut);
}
else
{
_client.Client.ReceiveTimeout = nextTimeout;
}
}
Log.Trace(() => "received byte dump: " + mr.Bytes.ToDisplay());
resEx = Toolkit.ReplyMessageValidate(respMsg);
if (resEx == null)
{
respArgs = r.Read <TResp>();
mr.CheckEmpty();
}
}
catch (Exception ex)
{
resEx = new RpcException("request error", ex); //FIXME: may be to add more context of header
}
if (resEx == null)
{
completed(respArgs);
}
else
{
excepted(resEx);
}
return(null);
}
