Response Object
Another important function of Response object is the output of HTTP status to
the client. As part of the HTTP header, these types of response objects should
be sent before sending any body content to the client.
Response.Status
property sets the value of the status line of HTTP response before the HTTP
headers returned by the server to the client.
Syntax:
Response.Status =[StatusDescription]
Or in an ASP file. Imply
<% Response.Status=[StatusDescription] %>
Parameters:
StatusDescription
The parameter "StatusDescription" is the
status code with a brief description. The data type of
"StatusDescription" is string and is enclosed by quotation marks (" "). .
| Class |
Code
Description |
|---|
| 1xx : Informational |
100 Continue |
|
101 Switching Protocols |
| 2xx : Success |
200 OK |
|
201 Created |
|
202 Accepted |
|
203 Non-Authoritative Information |
|
204 No content |
|
205 Reset Content |
|
206 Partial Content |
| 3xx : Redirection |
300 Multiple Choices |
|
301 Moved Permanently |
|
302 Found/Moved Temporarily |
|
303 See Other |
|
304 Not Modified |
|
305 Use Proxy |
|
307 Temporary Redirect |
| 4xx : Client Error |
400 Bad Request |
|
401 Unauthorized |
|
402 Payment Required |
|
403 Forbidden |
|
404 Not Found |
|
405 Method Not Allowed |
|
406 Not Acceptable |
|
407 Proxy Authentication Required |
|
408 Request Time-out |
|
409 Conflict |
|
410 Gone |
|
411 Length Required |
|
412 Precondition Failed |
|
413 Request Entity Too Large |
|
414 Request-URI Too Large |
|
415 Unsupported Media Type |
|
416 Requested range not satisfiable |
|
417 Expectation Failed |
| 5xx : Server Error |
500 Internal Server Error |
|
501 Not Implemented |
|
502 Bad Gateway |
|
503 Server Unavailable |
|
504 Gateway Time-out |
|
505 HTTP Version not supported |
| extension-code |
xxx Reason-Phrase |
Remarks:
The Response.Status property can be used to modify the status line as defined in
the HTTP specification returned by the server to the client according to the
needed.
The response HTTP status line may not be understanded by the HTTP application.
But the clint should understand the class of status code, the first digit of the
status code and any unrecognized status code is considered as being equivalent
to the x00 status code of that class.
Examples:
Default value with No Response.Status
HTTP header response:
HTTP/1.1 200 OK
Server: Microsoft-IIS/5.1
Date: Tue, 31 Jan 2012 15:19:08 GMT
X-Powered-By: ASP.NET
Content-Length: 0
Content-Type: text/html
Set-Cookie: ASPSESSIONIDPPPP=PPPPPPPP; path=/
Cache-control: private
-
Response.Status with value "301 Moved
Permanently" to modify the status line of HTTP header
ASP script command:
<% Response.Status="301 Moved Permanently" %>
HTTP header response:
HTTP/1.1 301 Moved Permanently
Server: Microsoft-IIS/5.1
Date: Tue, 31 Jan 2012 15:19:08 GMT
X-Powered-By: ASP.NET
Content-Length: 0
Content-Type: text/html
Set-Cookie: ASPSESSIONIDPPPP=PPPPPPPP; path=/
Cache-control: private
-
Response.Status with value "201
Created" to specify the status line of HTTP header together with
new created URI specified by Location HTTP header for redirection used by
client with automatic redirection capability.
ASP script command:
<% Response.Status="201
Created" %>
<% Response.AddHeader "Location","../../../../../Newdefault.asp" %>
HTTP header response:
HTTP/1.1 201 Created
Server: Microsoft-IIS/5.1
Date: Tue, 31 Jan 2012 15:19:08 GMT
X-Powered-By: ASP.NET
Location: ../../../../../Newdefault.asp
Content-Length: 0
Content-Type: text/html
Set-Cookie: ASPSESSIONIDPPPP=PPPPPPPP; path=/
Cache-control: private
-
Response.Status with value "301 Moved
Permanently" to specify the status line of HTTP header together with
new permanent URI specified by Location HTTP header for redirection used by
client with automatic redirection capability.
ASP script command:
<% Response.Status="301 Moved Permanently" %>
<% Response.AddHeader "Location","../../../../../Newdefault.asp" %>
HTTP header response:
HTTP/1.1 301 Moved Permanently
Server: Microsoft-IIS/5.1
Date: Tue, 31 Jan 2012 15:19:08 GMT
X-Powered-By: ASP.NET
Location: ../../../../../Newdefault.asp
Content-Length: 0
Content-Type: text/html
Set-Cookie: ASPSESSIONIDPPPP=PPPPPPPP; path=/
Cache-control: private
Response.Redirect Method redirects the
HTTP request to "a specified URL" by sending a 302 moved HTTP header to the
client.
Syntax:
Response.Redirect(
URL
)
Or in an ASP file. Imply
<% Response.Redirect "URL" %>
Parameters:
URL
The parameter "URL" is the
new Uniform Resource Locator (URL) to redirect. The data type of "URL" is an
full URL or string of virtual path, absolute path to a location on the server or
relative path to the original URL and is enclosed by quotation marks (" ").
Return Values:
The method has no return value.
Remarks:
The parameter "URL" can include a query string.
Older Web browsers might convert a POST request to a GET request during a
redirection.
The Output Content of the original URL is ignored and a redirection header is
sent to the client as specified by the Response.Redirect. And an automatic
repsonse body content with the redirection link of URL is also generated for
those client without automatic redirection capability.
Examples:
Sideway
BICK BLOG from Sideway
