private async Task SocketThreadAsync(HttpClient client, HttpContent httpContent, T eventArgs, string prioAndResourcePath)
{
using CancellationTokenSource cancelToken = new CancellationTokenSource();
//await Cs.SubscriptionService.SemaphoreSlim.WaitAsync();
HttpResponseMessage resp;
Cs.SubscriptionService.SubscriptionSessions.TryGetValue(prioAndResourcePath, out var outSubscData);
var uri = new Uri(string.Format(CultureInfo.InvariantCulture, Cs.TemplateUrl, Cs.Address.Full, "subscription"));
resp = await client.PostAsync(uri, httpContent).ConfigureAwait(true);
resp.EnsureSuccessStatusCode();
var header = resp.Headers.FirstOrDefault(p => p.Key == "Set-Cookie");
string abbCookie = header.Value.Last().Split('=')[1].Split(';')[0];
string sessionCookie = header.Value.First().Split(':')[0].Split('=')[1];
if (outSubscData.RequestQueue.Count == 1)
{
sessionCookie = outSubscData.Session;
}
using ClientWebSocket wSock = new ClientWebSocket();
wSock.Options.Credentials = new NetworkCredential(Cs.UAS.User, Cs.UAS.Password);
wSock.Options.Proxy = null;
CookieContainer cc = new CookieContainer();
cc.Add(new Uri($"https://{Cs.Address.Full}"), new Cookie("ABBCX", abbCookie, "/", Cs.Address.IP));
cc.Add(new Uri($"https://{Cs.Address.Full}"), new Cookie("-http-session-", sessionCookie, "/", Cs.Address.IP));
wSock.Options.Cookies = cc;
#if NETCOREAPP3_1
wSock.Options.RemoteCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => { return(true); };
#endif
wSock.Options.KeepAliveInterval = TimeSpan.FromMilliseconds(5000);
wSock.Options.AddSubProtocol(Protocol);
await wSock.ConnectAsync(new Uri(string.Format(CultureInfo.InvariantCulture, TemplateSocketUrl, Cs.Address.Full)), cancelToken.Token).ConfigureAwait(true);
//If user tried to open more sockets while we were opening this one async, they will be combined in the last Task of the RequestQueue
//and subscribed to in the same session as this one
if (outSubscData.RequestQueue.Count > 1)
{
outSubscData.Session = sessionCookie;
outSubscData.RequestQueue.Last().Start();
}
outSubscData.RequestQueue.Clear();
var bArr = new byte[1024];
ArraySegment <byte> arr = new ArraySegment <byte>(bArr);
SubscriptionSockets.Add(ValueChangedEventHandler, wSock);
while (ValueChangedEventHandler != null)
{
try
{
var res = await wSock.ReceiveAsync(arr, cancelToken.Token).ConfigureAwait(true);
if (ValueChangedEventHandler == null)
{
break;
}
var s = Encoding.ASCII.GetString(arr.Array);
eventArgs.SetValueChanged(s);
ValueChangedEventHandler(this, eventArgs);
}
catch (Exception ex)
{
if (ex is WebSocketException && wSock.State == WebSocketState.Aborted)
{
break;
}
}
}
}
private async Task SocketThreadAsync(HttpClient client, string ip, Dictionary <string, string> httpContent, UAS uas, CancellationToken cancelToken)
{
//post that you want to subscribe on values
using (FormUrlEncodedContent fued = new FormUrlEncodedContent(httpContent))
{
var resp = await client.PostAsync(new Uri($"http://{ip}/subscription"), fued).ConfigureAwait(true);
resp.EnsureSuccessStatusCode();
//Get the ABB cookie, which will be used to connect to to the websocket
var header = resp.Headers.FirstOrDefault(p => p.Key == "Set-Cookie");
var val = header.Value.Last();
string abbCookie = val.Split('=')[1].Split(';')[0];
//Setup the websocket connection
using (ClientWebSocket wSock = new ClientWebSocket())
{
wSock.Options.Credentials = new NetworkCredential(uas.User, uas.Password);
wSock.Options.Proxy = null;
CookieContainer cc = new CookieContainer();
cc.Add(new Uri($"http://{ip}"), new Cookie("ABBCX", abbCookie, "/", ip));
wSock.Options.Cookies = cc;
wSock.Options.KeepAliveInterval = TimeSpan.FromMilliseconds(5000);
wSock.Options.AddSubProtocol("robapi2_subscription");
//Connect
await wSock.ConnectAsync(new Uri($"ws://{ip}/poll"), cancelToken).ConfigureAwait(true);
var bArr = new byte[1024];
ArraySegment <byte> arr = new ArraySegment <byte>(bArr);
SubscriptionSockets.Add(ValueChangedEventHandler, wSock);
while (ValueChangedEventHandler != null)
{
try
{
var res = await wSock.ReceiveAsync(arr, cancelToken).ConfigureAwait(true);
if (ValueChangedEventHandler == null)
{
break;
}
//parse message
var s = Encoding.ASCII.GetString(arr.Array);
s = s.Split(new string[] { "lvalue\">" }, StringSplitOptions.None)[1].Split('<')[0].Trim();
ValueChangedEventHandler(this, new IOEventArgs()
{
LValue = int.Parse(s, CultureInfo.InvariantCulture)
});
}
catch (Exception ex)
{
if (ex is WebSocketException && wSock.State == WebSocketState.Aborted)
{
break;
}
}
}
}
}
}
