private async Task ListenAsync(HttpListener listener)
{
if (Handler is null)
{
return;
}
try
{
HttpListenerContext ctx = await listener.GetContextAsync();
byte[] content = await ctx.Request.InputStream.ToBytesAsync();
WWSResponse resp = await Handler(ctx.Request, content, ctx.Response);
byte[] ret = resp?.Bytes ?? new byte[0];
ctx.Response.ContentEncoding = resp.Codepage;
ctx.Response.ContentLength64 = ret.Length;
using (Stream os = ctx.Response.OutputStream)
{
await os.WriteAsync(ret, 0, ret.Length);
os.Flush();
os.Close();
}
}
catch (Exception ex)
{
OnInternalError?.Invoke(this, ex);
}
}
protected internal async override Task MainLoop()
{
LOG("MainLoop()");
try
{
while (true)
{
ASSERT(!string.IsNullOrWhiteSpace(HandlerUrl), "Property 'HandlerUrl' is supposed to be set here");
ASSERT(!string.IsNullOrWhiteSpace(ConnectionID), "Property 'ConnectionID' is supposed to be set here");
LOG("Send POLL request");
var request = CreateRootMessage_Poll(ConnectionID);
var response = await SendHttpRequest(request, isPollConnection : true);
var responseType = response[RootMessageKeys.KeyType] as string;
LOG("Root message received: " + responseType);
switch (responseType)
{
case RootMessageKeys.TypeReset:
// TCP connection refresh asked (just send another request)
continue;
case RootMessageType_Logout:
// Terminate MainLoop
goto EXIT_LOOP;
case RootMessageKeys.TypeMessages:
ReceiveMessages(response).FireAndForget();
break;
default:
throw new NotImplementedException("Unsupported response message type '" + responseType + "'");
}
}
EXIT_LOOP :;
}
catch (System.Exception ex)
{
switch (Status)
{
case ConnectionStatus.Closing :
case ConnectionStatus.Disconnected :
// Error received while closing the connections => No need to report
break;
default:
await OnInternalError.Invoke("Error while reading message from the HTTP request", ex);
break;
}
}
await Stop();
}