void Subscribe(IReader <IMessageIn> reader, IWriter <IMessageOut> writer, IMessageOut req, bool consumeFirst)
{
writer.Send(req);
string channel = WebSocket.Channels.FromMessage(req);
var deadline = DateTime.UtcNow + SubscribeTimeout;
while (true)
{
TimestampedMsg <IMessageIn> resp;
if (!reader.PeekWithTimeout(DateTime.UtcNow - deadline, out resp))
{
throw new Exception(String.Format(
"Timed out waiting for response to our subscription request: ({0}) {1}", req.GetType(), req));
}
if (channel == WebSocket.Channels.FromMessage(resp.Value))
{
if (resp.Value.Error.HasValue)
{
throw new Exception(String.Format(
"Exchange returned error to our subscription request. Request: ({0}) {1}. Response: ({2}) {3}",
req.GetType(), req, resp.Value.GetType(), resp.Value));
}
if (consumeFirst)
{
reader.Consume();
}
break;
}
reader.Skip();
}
}
