|
|
19.5 Changes from HTTP/1.0
Connected: An Internet Encyclopedia
19.5 Changes from HTTP/1.0
Up:
Connected: An Internet Encyclopedia
Up:
Requests For Comments
Up:
RFC 2068
Up:
19 Appendices
Prev: 19.4.7 MIME-Version
Next: 19.6 Additional Features
19.5 Changes from HTTP/1.0
19.5 Changes from HTTP/1.0
This section summarizes major differences between versions HTTP/1.0
and HTTP/1.1.
19.5.1 Changes to Simplify Multi-homed Web Servers and Conserve IP Addresses
The requirements that clients and servers support the Host request-
header, report an error if the Host request-header (section 14.23) is
missing from an HTTP/1.1 request, and accept absolute URIs (section
5.1.2) are among the most important changes defined by this
specification.
Older HTTP/1.0 clients assumed a one-to-one relationship of IP
addresses and servers; there was no other established mechanism for
distinguishing the intended server of a request than the IP address
to which that request was directed. The changes outlined above will
allow the Internet, once older HTTP clients are no longer common, to
support multiple Web sites from a single IP address, greatly
simplifying large operational Web servers, where allocation of many
IP addresses to a single host has created serious problems. The
Internet will also be able to recover the IP addresses that have been
allocated for the sole purpose of allowing special-purpose domain
names to be used in root-level HTTP URLs. Given the rate of growth of
the Web, and the number of servers already deployed, it is extremely
important that all implementations of HTTP (including updates to
existing HTTP/1.0 applications) correctly implement these
requirements:
- Both clients and servers MUST support the Host request-header.
- Host request-headers are required in HTTP/1.1 requests.
- Servers MUST report a 400 (Bad Request) error if an HTTP/1.1
request does not include a Host request-header.
- Servers MUST accept absolute URIs.
Next: 19.6 Additional Features
Connected: An Internet Encyclopedia
19.5 Changes from HTTP/1.0
|
|
|
 |
|
|
|
Protect yourself from cyberstalkers, identity thieves, and those who would snoop on you.
| |
Stop spam from invading your inbox without losing the mail you want. We give you more control over your e-mail than any other service.
| |
Block popups, ads, and malicious scripts while you surf the net through our anonymous proxies.
| |
Participate in Usenet, host your web files, easily send anonymous messages, and more, much more.
| |
All private, all encrypted, all secure, all in an easy to use service, and all for only $5.95 a month!
|
|
Service Details
|
|
|
|
