public async Task InvokeAsync(HttpContext context)
{
cachingManager.Start(context);
AppendAuthHeaders(context);
context.Response.OnStarting(_ =>
{
var httpContext = (HttpContext)_;
cachingManager.Finish(httpContext);
if (httpContext.Response.Headers.TryGetString(HeaderNames.ETag, out var etag))
{
if (!cachingOptions.StrongETag && !ETagUtils.IsWeakEtag(etag))
{
httpContext.Response.Headers[HeaderNames.ETag] = ETagUtils.ToWeakEtag(etag);
}
}
return(Task.CompletedTask);
}, context);
await next(context);
}
public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
{
cachingManager.Start(context.HttpContext);
AppendAuthHeaders(context.HttpContext);
var resultContext = await next();
if (resultContext.HttpContext.Response.Headers.TryGetString(HeaderNames.ETag, out var etag))
{
if (!cachingOptions.StrongETag && IsWeakEtag(etag))
{
etag = ToWeakEtag(etag);
resultContext.HttpContext.Response.Headers[HeaderNames.ETag] = etag;
}
if (IsCacheable(resultContext.HttpContext, etag))
{
resultContext.Result = new StatusCodeResult(304);
}
}
cachingManager.Finish(resultContext.HttpContext);
}
public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
{
var httpContext = context.HttpContext;
cachingManager.Start(httpContext);
var resultContext = await next();
cachingManager.Finish(httpContext, cachingOptions.MaxSurrogateKeys);
if (httpContext.Response.Headers.TryGetString(HeaderNames.ETag, out var etag))
{
if (!cachingOptions.StrongETag && !etag.StartsWith("W/", StringComparison.OrdinalIgnoreCase))
{
etag = $"W/{etag}";
httpContext.Response.Headers[HeaderNames.ETag] = etag;
}
if (HttpMethods.IsGet(httpContext.Request.Method) &&
httpContext.Response.StatusCode == 200 &&
httpContext.Request.Headers.TryGetString(HeaderNames.IfNoneMatch, out var noneMatch) &&
string.Equals(etag, noneMatch, StringComparison.Ordinal))
{
resultContext.Result = new StatusCodeResult(304);
}
}
}
public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
{
cachingManager.Start(context.HttpContext);
var resultContext = await next();
if (resultContext.HttpContext.Response.Headers.TryGetString(HeaderNames.ETag, out var etag))
{
if (IsCacheable(resultContext.HttpContext, etag))
{
resultContext.Result = new StatusCodeResult(304);
}
}
}
public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
{
var httpContext = context.HttpContext;
cachingManager.Start(httpContext);
cachingManager.AddHeader("Auth-State");
if (!string.IsNullOrWhiteSpace(httpContext.User.OpenIdSubject()))
{
cachingManager.AddHeader(HeaderNames.Authorization);
}
else if (!string.IsNullOrWhiteSpace(httpContext.User.OpenIdClientId()))
{
cachingManager.AddHeader("Auth-ClientId");
}
var resultContext = await next();
if (httpContext.Response.Headers.TryGetString(HeaderNames.ETag, out var etag))
{
if (!cachingOptions.StrongETag && !etag.StartsWith("W/", StringComparison.OrdinalIgnoreCase))
{
etag = $"W/{etag}";
httpContext.Response.Headers[HeaderNames.ETag] = etag;
}
if (HttpMethods.IsGet(httpContext.Request.Method) &&
httpContext.Response.StatusCode == 200 &&
httpContext.Request.Headers.TryGetString(HeaderNames.IfNoneMatch, out var noneMatch) &&
string.Equals(etag, noneMatch, StringComparison.Ordinal))
{
resultContext.Result = new StatusCodeResult(304);
}
}
cachingManager.Finish(httpContext);
}
