public Task Invoke(HttpContext context)
{
// Detect if an opaque upgrade is available. If so, add a websocket upgrade.
var upgradeFeature = context.Features.Get <IHttpUpgradeFeature>();
if (upgradeFeature != null && context.Features.Get <IHttpWebSocketFeature>() == null)
{
var webSocketFeature = new UpgradeHandshake(context, upgradeFeature, _options);
context.Features.Set <IHttpWebSocketFeature>(webSocketFeature);
if (!_anyOriginAllowed)
{
// Check for Origin header
var originHeader = context.Request.Headers[HeaderNames.Origin];
if (!StringValues.IsNullOrEmpty(originHeader) && webSocketFeature.IsWebSocketRequest)
{
// Check allowed origins to see if request is allowed
if (!_allowedOrigins.Contains(originHeader.ToString(), StringComparer.Ordinal))
{
_logger.LogDebug("Request origin {Origin} is not in the list of allowed origins.", originHeader);
context.Response.StatusCode = StatusCodes.Status403Forbidden;
return(Task.CompletedTask);
}
}
}
}
return(_next(context));
}
public Task InvokeAsync(
HttpContext context,
RequestDelegate next)
{
// Detect if an opaque upgrade is available. If so, add a spdy upgrade.
var upgradeFeature = context.Features.Get <IHttpUpgradeFeature>();
if (upgradeFeature != null &&
context.Features.Get <ISpdyFeature>() == null)
{
var spdyFeature = new UpgradeHandshake(context, upgradeFeature);
context.Features.Set <ISpdyFeature>(spdyFeature);
}
return(next.Invoke(context));
}
public Task InvokeAsync(
HttpContext context,
RequestDelegate next)
{
// Detect if an opaque upgrade is available. If so, add a spdy upgrade.
var upgradeFeature = context.Features.Get <IHttpUpgradeFeature>();
// ReSharper disable once ConditionIsAlwaysTrueOrFalse Can be null
if (upgradeFeature != null &&
// ReSharper disable once ConditionIsAlwaysTrueOrFalse Can be null
context.Features.Get <ISpdyFeature>() == null)
{
var spdyFeature = new UpgradeHandshake(context, upgradeFeature);
context.Features.Set <ISpdyFeature>(spdyFeature);
}
return(next.Invoke(context));
}
