private XhrReceiver(string url, AjaxObjectFactory ajaxObject)
{
Log.Debug($"{nameof(XhrReceiver)}: {url}");
this._bufferPosition = 0;
this._xo = ajaxObject("POST", url, null);
this._xo.On("chunk", this.ChunkHandler);
this._xo.Once("finish", this.OnFinish);
}
public Polling(ReceiverFactory receiver, string receiveUrl, AjaxObjectFactory ajaxObject)
{
Log.Debug($"{nameof(Polling)}: {receiveUrl}");
this._receiver = receiver;
this._receiveUrl = receiveUrl;
this._ajaxObject = ajaxObject;
this.ScheduleReceiver();
}
private static SenderDelegate CreateAjaxSender(AjaxObjectFactory ajaxObject)
{
return((url, payload, callback) =>
{
Log.Debug($"{nameof(CreateAjaxSender)}: Create ajax sender {url} {payload}");
var opt = new TransportOptions();
if (!payload.IsNullOrEmpty())
{
opt.Headers = new Dictionary <string, string>
{
{ "Content-type", "text/plain" }
}
}
;
var ajaxUrl = new Uri(url).AddPath("/xhr_send");
var xo = ajaxObject("POST", ajaxUrl.OriginalString, payload, opt);
xo.Once("finish", (sender, e) =>
{
var status = (int)e[0];
Log.Debug($"{nameof(CreateAjaxSender)}: Finish {status}");
xo = null;
if (status != 200 && status != 204)
{
callback(new Exception($"http status {status}"));
return;
}
callback(null);
});
return () =>
{
Log.Debug($"{nameof(CreateAjaxSender)}: Abort");
xo.Close();
xo = null;
var err = new CodedException("Aborted", 1000);
callback(err);
};
});
}
public static IReceiver Build(string url, AjaxObjectFactory ajaxObject)
{
var receiver = new XhrReceiver(url, ajaxObject);
return(receiver);
}
protected AjaxBasedTransport(string transportUrl, string urlSuffix, Polling.ReceiverFactory receiver, AjaxObjectFactory ajaxObject)
: base(transportUrl, urlSuffix, CreateAjaxSender(ajaxObject), receiver, ajaxObject)
{
}
protected SenderReceiver(string transUrl, string urlSuffix, SenderDelegate senderFunc, Polling.ReceiverFactory receiver, AjaxObjectFactory ajaxObject)
: base(transUrl, senderFunc)
{
var pollUrl = new Uri(transUrl).AddPath(urlSuffix);
Log.Debug($"{nameof(SenderReceiver)}: {pollUrl}");
this._poll = new Polling(receiver, pollUrl.OriginalString, ajaxObject);
this._poll.On("message", this.OnMessage);
this._poll.Once("close", this.OnPollClose);
}
