// `param` may be null (means empty).
string AuthenticatedRequest(IMessageOut msg, IEnumerable <KV> param)
{
param = param ?? new KV[0];
param = param.Append(new KV("api_key", _keys.ApiKey));
// Signature is added last because its value depends on all other parameters.
param = param.Append(new KV("sign", Authenticator.Sign(_keys, param)));
string parameters = String.Join(",", param.Select(kv => String.Format("\"{0}\":\"{1}\"", kv.Key, kv.Value)));
return(String.Format("{{\"event\":\"addChannel\",\"channel\":\"{0}\",\"parameters\":{{{1}}}}}",
Channels.FromMessage(msg), parameters));
}
void OnMessage(TimestampedMsg <IMessageIn> msg)
{
Condition.Requires(msg, "msg").IsNotNull();
string channel = Channels.FromMessage(msg.Value);
Turnstile <IMessageIn, IMessageOut> turnstile;
lock (_monitor)
{
if (!_channels.TryGetValue(channel, out turnstile))
{
// Market data, ping or somesuch.
return;
}
}
turnstile.OnReply(msg);
}
// Action `done` will be called exactly once in the scheduler. Its argument will be null on timeout.
public void Send(IMessageOut msg, Action <TimestampedMsg <IMessageIn> > done)
{
Condition.Requires(msg, "msg").IsNotNull();
Condition.Requires(done, "done").IsNotNull();
string channel = Channels.FromMessage(msg);
Turnstile <IMessageIn, IMessageOut> turnstile;
lock (_monitor)
{
if (!_channels.TryGetValue(channel, out turnstile))
{
turnstile = new Turnstile <IMessageIn, IMessageOut>(_connection);
_channels.Add(channel, turnstile);
}
}
turnstile.Send(msg, done);
}
string UnauthenticatedRequest(IMessageOut msg)
{
// Example: {"event":"addChannel","channel":"ok_btcusd_future_depth_this_week_60"}.
return(String.Format("{{\"event\":\"addChannel\",\"channel\":\"{0}\"}}",
Channels.FromMessage(msg)));
}