ASP Tutorials - Herong's Tutorial Examples
Dr. Herong Yang, Version 5.00

ASP Tutorials - Herong's Tutorial Examples

∟Managing Response Header Lines

∟HTTP Response Syntax

This section describes the Syntax of an HTTP response message returned by a Web server after received an HTTP request.

Based on HTTP/1.1 protocol, after receiving and interpreting an HTTP request from a Web client, a Web server must return an HTTP response using the syntax listed below: 

status-line
header-line
...
header-line

entity-body

Note that:

  • Response must have one status-line.
  • Response can have zero, one, or many header lines.
  • Response can only have zero or one entity-body.
  • There is a blank line between header lines and the entity body.
  • Status line, head line, and blank line must be ended with CRLF ("/r/n") characters.
  • Entity body is the actual data requested by the client request.
  • Header lines can be in any order.

Below is a simple HTTP response with two header lines: 

HTTP/1.1 200 OK
Content-Type: text/html
Content-Length: 38

<html><body>Hello world!</body></html>

Last update: 2002.

Table of Contents

 About This Book

 ASP (Active Server Pages) Introduction

 IIS (Internet Information Services) 5.0

 MS Script Debugger

 VBScript Language

 ASP Built-in Run-time Objects

 ASP Session

 Creating and Managing Cookies

 Managing Sessions with and without Cookies

 scrrun.dll - Scripting Runtime DLL

►Managing Response Header Lines

►HTTP Response Syntax

 HTTP Response Header Lines

 Controlling Response Header Lines

 Viewing Response Header Lines

 Response Header Lines for Static Files

 Controlling Response Header Line Example

 Sending Binary Files to Browsers

 Sending Files as Downloads

 Calculation Speed and Response Time

 ADO (ActiveX Data Object) DLL

 Working with MS Access Database

 Guest Book Application Example

 References

 PDF Printing Version

Dr. Herong Yang, updated in 2010
HTTP Response Syntax