ASP MVC - 默認HTTP頭文件是否有任何常量？

Question

基本上，我問了默認的內容類型，但這次是爲標題提出的問題：Microsoft是否爲標準HTTP標頭名稱創建了一個充滿常量的類，還是必須編寫自己的？

感謝，盧克

Answer 1

請求頭

/// <summary> 
/// Contains the standard set of headers applicable to an HTTP request. 
/// </summary> 
public static class HttpRequestHeaders 
{ 
    ///<summary>Content-Types that are acceptable</summary> 
    public const string Accept = "Accept"; 
    ///<summary>Character sets that are acceptable</summary> 
    public const string AcceptCharset = "Accept-Charset"; 
    ///<summary>Acceptable encodings. See HTTP compression.</summary> 
    public const string AcceptEncoding = "Accept-Encoding"; 
    ///<summary>Acceptable languages for response</summary> 
    public const string AcceptLanguage = "Accept-Language"; 
    ///<summary>Acceptable version in time</summary> 
    public const string AcceptDatetime = "Accept-Datetime"; 
    ///<summary>Authentication credentials for HTTP authentication</summary> 
    public const string Authorization = "Authorization"; 
    ///<summary>Used to specify directives that MUST be obeyed by all caching mechanisms along the request/response chain</summary> 
    public const string CacheControl = "Cache-Control"; 
    ///<summary>What type of connection the user-agent would prefer</summary> 
    public const string Connection = "Connection"; 
    ///<summary>an HTTP cookie previously sent by the server with Set-Cookie (below)</summary> 
    public const string Cookie = "Cookie"; 
    ///<summary>The length of the request body in octets (8-bit bytes)</summary> 
    public const string ContentLength = "Content-Length"; 
    ///<summary>A Base64-encoded binary MD5 sum of the content of the request body</summary> 
    public const string ContentMD5 = "Content-MD5"; 
    ///<summary>The MIME type of the body of the request (used with POST and PUT requests)</summary> 
    public const string ContentType = "Content-Type"; 
    ///<summary>The date and time that the message was sent</summary> 
    public const string Date = "Date"; 
    ///<summary>Indicates that particular server behaviors are required by the client</summary> 
    public const string Expect = "Expect"; 
    ///<summary>The email address of the user making the request</summary> 
    public const string From = "From"; 
    ///<summary>The domain name of the server (for virtual hosting), mandatory since HTTP/1.1. Although domain name are specified as case-insensitive[5][6], it is not specified whether the contents of the Host field should be interpreted in a case-insensitive manner[7] and in practice some implementations of virtual hosting interpret the contents of the Host field in a case-sensitive manner.[citation needed]</summary> 
    public const string Host = "Host"; 
    ///<summary>Only perform the action if the client supplied entity matches the same entity on the server. This is mainly for methods like PUT to only update a resource if it has not been modified since the user last updated it.</summary> 
    public const string IfMatch = "If-Match"; 
    ///<summary>Allows a 304 Not Modified to be returned if content is unchanged</summary> 
    public const string IfModifiedSince = "If-Modified-Since"; 
    ///<summary>Allows a 304 Not Modified to be returned if content is unchanged, see HTTP ETag</summary> 
    public const string IfNoneMatch = "If-None-Match"; 
    ///<summary>If the entity is unchanged, send me the part(s) that I am missing; otherwise, send me the entire new entity</summary> 
    public const string IfRange = "If-Range"; 
    ///<summary>Only send the response if the entity has not been modified since a specific time.</summary> 
    public const string IfUnmodifiedSince = "If-Unmodified-Since"; 
    ///<summary>Limit the number of times the message can be forwarded through proxies or gateways.</summary> 
    public const string MaxForwards = "Max-Forwards"; 
    ///<summary>Implementation-specific headers that may have various effects anywhere along the request-response chain.</summary> 
    public const string Pragma = "Pragma"; 
    ///<summary>Authorization credentials for connecting to a proxy.</summary> 
    public const string ProxyAuthorization = "Proxy-Authorization"; 
    ///<summary>Request only part of an entity. Bytes are numbered from 0.</summary> 
    public const string Range = "Range"; 
    ///<summary>This is the address of the previous web page from which a link to the currently requested page was followed. (The word 「referrer」 is misspelled in the RFC as well as in most implementations.)</summary> 
    public const string Referersic = "Referer[sic]"; 
    ///<summary>The transfer encodings the user agent is willing to accept: the same values as for the response header Transfer-Encoding can be used, plus the trailers value (related to the chunked transfer method) to notify the server it expects to receive additional headers (the trailers) after the last, zero-sized, chunk.</summary> 
    public const string TE = "TE"; 
    ///<summary>Ask the server to upgrade to another protocol.</summary> 
    public const string Upgrade = "Upgrade"; 
    ///<summary>The user agent string of the user agent</summary> 
    public const string UserAgent = "User-Agent"; 
    ///<summary>Informs the server of proxies through which the request was sent.</summary> 
    public const string Via = "Via"; 
    ///<summary>A general warning about possible problems with the entity body.</summary> 
    public const string Warning = "Warning"; 
    ///<summary>Contains the original source address of the request.</summary> 
    public const string XForwardedFor = "X-Forwarded-For"; 
} 

響應頭

/// <summary> 
/// Contains the standard set of headers applicable to an HTTP response. 
/// </summary> 
public static class HttpResponseHeaders 
{ 
    ///<summary>What partial content range types this server supports</summary> 
    public const string AcceptRanges = "Accept-Ranges"; 
    ///<summary>The age the object has been in a proxy cache in seconds</summary> 
    public const string Age = "Age"; 
    ///<summary>Valid actions for a specified resource. To be used for a 405 Method not allowed</summary> 
    public const string Allow = "Allow"; 
    ///<summary>Tells all caching mechanisms from server to client whether they may cache this object. It is measured in seconds</summary> 
    public const string CacheControl = "Cache-Control"; 
    ///<summary>Options that are desired for the connection[17]</summary> 
    public const string Connection = "Connection"; 
    ///<summary>The type of encoding used on the data. See HTTP compression.</summary> 
    public const string ContentEncoding = "Content-Encoding"; 
    ///<summary>The language the content is in</summary> 
    public const string ContentLanguage = "Content-Language"; 
    ///<summary>The length of the response body in octets (8-bit bytes)</summary> 
    public const string ContentLength = "Content-Length"; 
    ///<summary>An alternate location for the returned data</summary> 
    public const string ContentLocation = "Content-Location"; 
    ///<summary>A Base64-encoded binary MD5 sum of the content of the response</summary> 
    public const string ContentMD5 = "Content-MD5"; 
    ///<summary>An opportunity to raise a File Download dialogue box for a known MIME type with binary format or suggest a filename for dynamic content. Quotes are necessary with special characters.</summary> 
    public const string ContentDisposition = "Content-Disposition"; 
    ///<summary>Where in a full body message this partial message belongs</summary> 
    public const string ContentRange = "Content-Range"; 
    ///<summary>The MIME type of this content</summary> 
    public const string ContentType = "Content-Type"; 
    ///<summary>The date and time that the message was sent</summary> 
    public const string Date = "Date"; 
    ///<summary>An identifier for a specific version of a resource, often a message digest</summary> 
    public const string ETag = "ETag"; 
    ///<summary>Gives the date/time after which the response is considered stale</summary> 
    public const string Expires = "Expires"; 
    ///<summary>The last modified date for the requested object, inRFC 2822 format</summary> 
    public const string LastModified = "Last-Modified"; 
    ///<summary>Used to express a typed relationship with another resource, where the relation type is defined by RFC 5988</summary> 
    public const string Link = "Link"; 
    ///<summary>Used in redirection, or when a new resource has been created.</summary> 
    public const string Location = "Location"; 
    ///<summary>This header is supposed to set P3P policy, in the form of P3P:CP=your_compact_policy. However, P3P did not take off,[22] most browsers have never fully implemented it, a lot of websites set this header with fake policy text, that was enough to fool browsers the existence of P3P policy and grant permissions for third party cookies.</summary> 
    public const string P3P = "P3P"; 
    ///<summary>Implementation-specific headers that may have various effects anywhere along the request-response chain.</summary> 
    public const string Pragma = "Pragma"; 
    ///<summary>Request authentication to access the proxy.</summary> 
    public const string ProxyAuthenticate = "Proxy-Authenticate"; 
    ///<summary>Used in redirection, or when a new resource has been created. This refresh redirects after 5 seconds. This is a proprietary, non-standard header extension introduced by Netscape and supported by most web browsers.</summary> 
    public const string Refresh = "Refresh"; 
    ///<summary>If an entity is temporarily unavailable, this instructs the client to try again after a specified period of time (seconds).</summary> 
    public const string RetryAfter = "Retry-After"; 
    ///<summary>A name for the server</summary> 
    public const string Server = "Server"; 
    ///<summary>an HTTP cookie</summary> 
    public const string SetCookie = "Set-Cookie"; 
    ///<summary>A HSTS Policy informing the HTTP client how long to cache the HTTPS only policy and whether this applies to subdomains.</summary> 
    public const string StrictTransportSecurity = "Strict-Transport-Security"; 
    ///<summary>The Trailer general field value indicates that the given set of header fields is present in the trailer of a message encoded with chunked transfer-coding.</summary> 
    public const string Trailer = "Trailer"; 
    ///<summary>The form of encoding used to safely transfer the entity to the user. Currently defined methods are:chunked, compress, deflate, gzip, identity.</summary> 
    public const string TransferEncoding = "Transfer-Encoding"; 
    ///<summary>Tells downstream proxies how to match future request headers to decide whether the cached response can be used rather than requesting a fresh one from the origin server.</summary> 
    public const string Vary = "Vary"; 
    ///<summary>Informs the client of proxies through which the response was sent.</summary> 
    public const string Via = "Via"; 
    ///<summary>A general warning about possible problems with the entity body.</summary> 
    public const string Warning = "Warning"; 
    ///<summary>Indicates the authentication scheme that should be used to access the requested entity.</summary> 
    public const string WWWAuthenticate = "WWW-Authenticate";  
} 

Answer 2

微軟創建的請求和響應頭枚舉。

看看以下內容：

HttpResponseHeader

HttpRequestHeader

Answer 3

要在傑德的答案擴大。

使用WebHeaderCollection時，HttpResponseHeader和HttpRequestHeader枚舉可以用作常量。 WebHeaderCollection包含接受這些枚舉的索引器屬性。

您可以使用字符串或其中一個枚舉來獲取和設置標頭值，並將其混合在您的代碼中。

例LinqPad腳本：

var headers = new WebHeaderCollection(); 

headers["If-Modified-Since"] = "Sat, 29 Oct 1994 19:43:31 GMT"; 
// shows header name as "If-Modified-Since" 
headers.Dump(); 
// shows expected header value of "Sat, 29 Oct 1994 19:43:31 GMT" 
headers[HttpRequestHeader.IfModifiedSince].Dump(); 

headers.Clear(); 

headers[HttpRequestHeader.IfModifiedSince] = "Sat, 29 Oct 1994 19:43:31 GMT"; 
// shows header name as "If-Modified-Since" 
headers.Dump(); 
// shows expected header value "Sat, 29 Oct 1994 19:43:31 GMT" 
headers["If-Modified-Since"].Dump(); 

Answer 4

他們有他們在HttpKnownHeaderNames可惜就是類是內部的。我爲它打開了一個問題：https://github.com/dotnet/corefx/issues/10632。

Answer 5

我發現這個問題，而試圖發現同樣的事情：標題名稱常量作爲字符串在哪裏？

Microsoft.Net.Http.Headers.HeaderNames是救了我的班。

public static class HeaderNames 
    { 
    public const string Accept = "Accept"; 
    public const string AcceptCharset = "Accept-Charset"; 
    public const string AcceptEncoding = "Accept-Encoding"; 
    public const string AcceptLanguage = "Accept-Language"; 
    public const string AcceptRanges = "Accept-Ranges"; 
    public const string Age = "Age"; 
    public const string Allow = "Allow"; 
    public const string Authorization = "Authorization"; 
    public const string CacheControl = "Cache-Control"; 
    public const string Connection = "Connection"; 
    public const string ContentDisposition = "Content-Disposition"; 
    public const string ContentEncoding = "Content-Encoding"; 
    public const string ContentLanguage = "Content-Language"; 
    public const string ContentLength = "Content-Length"; 
    public const string ContentLocation = "Content-Location"; 
    public const string ContentMD5 = "ContentMD5"; 
    public const string ContentRange = "Content-Range"; 
    public const string ContentType = "Content-Type"; 
    public const string Cookie = "Cookie"; 
    public const string Date = "Date"; 
    public const string ETag = "ETag"; 
    public const string Expires = "Expires"; 
    public const string Expect = "Expect"; 
    public const string From = "From"; 
    public const string Host = "Host"; 
    public const string IfMatch = "If-Match"; 
    public const string IfModifiedSince = "If-Modified-Since"; 
    public const string IfNoneMatch = "If-None-Match"; 
    public const string IfRange = "If-Range"; 
    public const string IfUnmodifiedSince = "If-Unmodified-Since"; 
    public const string LastModified = "Last-Modified"; 
    public const string Location = "Location"; 
    public const string MaxForwards = "Max-Forwards"; 
    public const string Pragma = "Pragma"; 
    public const string ProxyAuthenticate = "Proxy-Authenticate"; 
    public const string ProxyAuthorization = "Proxy-Authorization"; 
    public const string Range = "Range"; 
    public const string Referer = "Referer"; 
    public const string RetryAfter = "Retry-After"; 
    public const string Server = "Server"; 
    public const string SetCookie = "Set-Cookie"; 
    public const string TE = "TE"; 
    public const string Trailer = "Trailer"; 
    public const string TransferEncoding = "Transfer-Encoding"; 
    public const string Upgrade = "Upgrade"; 
    public const string UserAgent = "User-Agent"; 
    public const string Vary = "Vary"; 
    public const string Via = "Via"; 
    public const string Warning = "Warning"; 
    public const string WebSocketSubProtocols = "Sec-WebSocket-Protocol"; 
    public const string WWWAuthenticate = "WWW-Authenticate"; 
    }