//public BittrexExchange(KafkaProducer p)
public BittrexExchange(string bootstrapServers, string topic)
{
var evKeys = Environment.GetEnvironmentVariable(ApiKeyEnvVar, EnvironmentVariableTarget.User);
var keys = evKeys.Split('|');
var clientOptions = new BittrexClientOptions();
clientOptions.ApiCredentials = new ApiCredentials(keys[0], keys[1]);
this.exch = new BittrexClient(clientOptions);
//----------
var socketOptions = new BittrexSocketClientOptions();
socketOptions.ApiCredentials = clientOptions.ApiCredentials;
this.sock = new BittrexSocketClient(socketOptions);
//_p = p;
_p = new KafkaProducer(bootstrapServers, topic);
}