本文整理汇总了C#中DreamMessage.CheckCacheRevalidation方法的典型用法代码示例。如果您正苦于以下问题：C# DreamMessage.CheckCacheRevalidation方法的具体用法？C# DreamMessage.CheckCacheRevalidation怎么用？C# DreamMessage.CheckCacheRevalidation使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DreamMessage的用法示例。
在下文中一共展示了DreamMessage.CheckCacheRevalidation方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetFileOrFolderListing
public Yield GetFileOrFolderListing(DreamContext context, DreamMessage request, Result<DreamMessage> response)
{
bool head = StringUtil.EqualsInvariant(context.Verb, "HEAD");
string path = GetPath(context);
DreamMessage result;
if(File.Exists(path)) {
// dealing with a file request
TouchMeta(path);
// check if request contains a 'if-modified-since' header
var lastmodified = File.GetLastWriteTime(path);
if(request.CheckCacheRevalidation(lastmodified) && (lastmodified.Year >= 1900)) {
response.Return(DreamMessage.NotModified());
yield break;
}
// retrieve file
try {
result = DreamMessage.FromFile(path, head);
} catch(FileNotFoundException) {
result = DreamMessage.NotFound("file not found");
} catch(Exception) {
result = DreamMessage.BadRequest("invalid path");
}
// add caching headers if file was found
if(!head && result.IsSuccessful) {
// add caching information; this will avoid unnecessary data transfers by user-agents with caches
result.SetCacheMustRevalidate(lastmodified);
}
} else if(Directory.Exists(path)) {
// dealing with a directory request
if(head) {
// HEAD for a directory doesn't really mean anything, so we just return ok, to indicate that it exists
result = DreamMessage.Ok();
} else {
var doc = new XDoc("files");
// list directory contents
var directories = Directory.GetDirectories(path);
foreach(var dir in directories) {
if(dir.EndsWithInvariantIgnoreCase(META)) {
continue;
}
doc.Start("folder")
.Elem("name", Path.GetFileName(dir))
.End();
}
foreach(var filepath in Directory.GetFiles(path)) {
var file = new FileInfo(filepath);
doc.Start("file")
.Elem("name", file.Name)
.Elem("size", file.Length)
.Elem("date.created", file.CreationTimeUtc)
.Elem("date.modified", file.LastWriteTimeUtc);
var entry = SyncMeta(filepath);
if(entry != null) {
doc.Elem("date.expire", entry.When);
doc.Elem("date.ttl", entry.TTL);
}
doc.End();
}
result = DreamMessage.Ok(doc);
}
} else {
// nothin here
result = DreamMessage.NotFound("no such file or folder");
}
response.Return(result);
yield break;
}示例2: GetFileOrFolderListing
public Yield GetFileOrFolderListing(DreamContext context, DreamMessage request, Result<DreamMessage> response)
{
var head = "HEAD".EqualsInvariant(context.Verb);
var path = GetPath(context);
var data = _s3Client.GetDataInfo(path, head);
DreamMessage result;
if(data == null) {
response.Return(DreamMessage.NotFound("no such file or folder"));
yield break;
}
if(data.IsDirectory) {
// Note (arnec): HEAD for a directory doesn't really mean anything, so we just return ok, to indicate that it exists
result = head ? DreamMessage.Ok() : DreamMessage.Ok(data.AsDirectoryDocument());
} else {
// dealing with a file request
var filehandle = data.AsFileHandle();
// check if request contains a 'if-modified-since' header
if(request.CheckCacheRevalidation(filehandle.Modified) && (filehandle.Modified.Year >= 1900)) {
response.Return(DreamMessage.NotModified());
yield break;
}
result = head
? new DreamMessage(DreamStatus.Ok, null, filehandle.MimeType, filehandle.Size, Stream.Null)
: DreamMessage.Ok(filehandle.MimeType, filehandle.Size, filehandle.Stream);
// add caching headers if file was found
if(!head && result.IsSuccessful) {
// add caching information; this will avoid unnecessary data transfers by user-agents with caches
result.SetCacheMustRevalidate(filehandle.Modified);
}
}
response.Return(result);
yield break;
}