public async Task Invoke(HttpContext context)
{
var newDeviceId = !context.Request.Cookies.TryGetValue(GlobalVariables.DeviceIdName, out string deviceId) || string.IsNullOrEmpty(deviceId) || deviceId.Length != 32;
if (newDeviceId)
{
deviceId = Guid.NewGuid().ToString("N").ToLowerInvariant();
}
var newSessionId = !context.Request.Cookies.TryGetValue(GlobalVariables.SessionIdName, out string sessionId) || string.IsNullOrEmpty(sessionId);
if (newSessionId)
{
sessionId = DateTime.UtcNow.ToBinary().ToString("X16").ToLowerInvariant() + deviceId.Substring(0, 16);
}
var telemetry = context.Features.Get <RequestTelemetry>();
CallContext.ClientContext = new ClientContext
{
ClientDeviceId = deviceId,
ClientSessionId = sessionId,
CorrelationId = telemetry?.Context.Operation.Id ?? Guid.NewGuid().ToString("N").ToLowerInvariant() + "|" + sessionId
};
telemetry.Context.Session.Id = sessionId;
telemetry.Context.Properties["Device Id"] = deviceId;
if (newDeviceId)
{
insight.Event(ApplicationInsightConstants.EventClientNewDeviceIdSource);
}
if (newSessionId)
{
insight.Event(ApplicationInsightConstants.EventClientNewSessionIdSource);
}
context.Response.Cookies.Append(
GlobalVariables.DeviceIdName,
deviceId,
new CookieOptions
{
//Domain = context.Request.Host.Host,
IsEssential = true,
Path = "/",
SameSite = SameSiteMode.Strict,
HttpOnly = true,
Expires = DateTimeOffset.Now.AddYears(1)
});
context.Response.Cookies.Append(
GlobalVariables.SessionIdName,
sessionId,
new CookieOptions
{
//Domain = context.Request.Host.Host,
IsEssential = true,
Path = "/",
SameSite = SameSiteMode.Strict,
HttpOnly = false
});
await next(context);
}