Sun Microsystems Netscape Enterprise Server, Руководство администратора

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Appendix A, HyperText Transfer Protocol 453
Responses
Response Header
The response header contains information about the server and information
about the document that will follow. Common response headers are shown in
Table A.3.
Response Data
The server sends a blank line after the last header field. The server then sends
the document data.
404
Not found. The document requested isn’t on the server.
This code can also be sent if the server has been told to
protect the document by telling unauthorized people
that it doesn’t exist.
500
Server error. A server-related error occurred. The server
administrator should check the server’s error log to see
what happened.
Table A.3 Common response headers
Response header Description
Server
The name and version of the web server.
Date
The current date (in Greenwich Mean Time).
Last-modified
The date when the document was last modified.
Expires
The date when the document expires.
Content-length
The length of the data that follows (in bytes).
Content-type
The MIME type of the following data.
WWW-authenticate
Used during authentication and includes information that
tells the client software what is necessary for
authentication (such as username and password).
Table A.2 Common HTTP status codes
Status code Meaning