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Added http server support for etags

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LukePulverenti Luke Pulverenti luke pulverenti
2012-09-18 18:50:26 -04:00
parent bd6c2d2a22
commit 19e202d5e1
3 changed files with 38 additions and 3 deletions
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18
MediaBrowser.Common/Net/Handlers/BaseHandler.cs
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@@ -192,6 +192,13 @@ namespace MediaBrowser.Common.Net.Handlers
ctx.Response.ContentType = await GetContentType().ConfigureAwait(false);
string etag = await GetETag().ConfigureAwait(false);
if (!string.IsNullOrEmpty(etag))
{
ctx.Response.Headers["ETag"] = etag;
}
TimeSpan cacheDuration = CacheDuration;
DateTime? lastDateModified = await GetLastDateModified().ConfigureAwait(false);
@@ -205,7 +212,11 @@ namespace MediaBrowser.Common.Net.Handlers
// If the cache hasn't expired yet just return a 304
if (IsCacheValid(ifModifiedSince.ToUniversalTime(), cacheDuration, lastDateModified))
{
StatusCode = 304;
// ETag must also match (if supplied)
if ((etag ?? string.Empty).Equals(ctx.Request.Headers["If-None-Match"] ?? string.Empty))
{
StatusCode = 304;
}
}
}
}
@@ -311,6 +322,11 @@ namespace MediaBrowser.Common.Net.Handlers
response.Headers[HttpResponseHeader.LastModified] = lastModified.ToString("r");
}
protected virtual Task<string> GetETag()
{
return Task.FromResult<string>(string.Empty);
}
/// <summary>
/// Gives subclasses a chance to do any prep work, and also to validate data and set an error status code, if needed
/// </summary>