/// <summary>
/// this is our request that implements the ack/nak/response interaction
/// adds id to subject and is expected to be used by Clients
/// </summary>
/// <param name="subject"></param>
/// <param name="replyTo"></param>
/// <param name="data"></param>
/// <param name=""></param>
public void protocolRequest(string subject, string data, IResponseCompletion completion = null)
{
Task.Factory.StartNew(() =>
{
//create a reply to mailbox
var replyTo = "TA_MBOX:" + Guid.NewGuid().ToString();
if (completion != null)
{
//subscribe to reply to mailbox as this is where
//ack and reponse will be directed to
_connection.SubscribeAsync(replyTo, (s, a) =>
{
var dataAsString = Encoding.UTF8.GetString(a.Message.Data, 0, a.Message.Data.Length);
//call through ack when ack is received
if (dataAsString == "ACK")
{
completion.ack?.Invoke();
}
else if (dataAsString == "NAK")
{
if (completion.nak != null)
{
completion.nak?.Invoke(2); //2 means not implemented, need enum...
}
else
{
//call through response ( complete )
completion.response(a.Message.Data);
//unsubscribe from temporary mailbox
a.Message.ArrivalSubcription.Unsubscribe();
}
}
});
}
//publish to subject with reply to
var message = new Msg(id + "." + subject, replyTo, Encoding.UTF8.GetBytes(data));
_connection.Publish(message);
});
}
public void doAction(string what, IResponseCompletion callbacks)
{
request("action." + what, Encoding.UTF8.GetBytes(what), callbacks);
}
public void doGet(string what, IResponseCompletion callbacks)
{
request("get", Encoding.UTF8.GetBytes(what), callbacks);
}
/// <summary>
/// send request and be called back for ack/nak/response
/// </summary>
/// <param name="subject"></param>
/// <param name="payload"></param>
/// <param name="callbacks"></param>
public void request(string subject, byte[] payload, IResponseCompletion callbacks)
{
protocolRequest(subject, payload, callbacks);
}
