IPP Mail Archive: Re: RE: IPP> Identifying jobs in requests

IPP Mail Archive: Re: RE: IPP> Identifying jobs in requests

Re: RE: IPP> Identifying jobs in requests

Carl Kugler (kugler@us.ibm.com)
4 Jun 1998 21:25:54 -0000

>
> I think for purposes of allowing rewriting of certain URL components by
> intermediaries, that the URL specified in the IPP message will probably
> have to be relative. Relative to "what" is the issue.
>
> What URL components are typically rewritten by proxies (or other
> intermediaries)?
>

Commonly, scheme, host, and port.

If a proxy receives a host name which is not a fully qualified domain name, it MAY add its domain to the host name it received.

In requests that they forward, transparent proxies MUST NOT rewrite the “abs_path” part of a Request-URI in any way except to replace a null abs_path with “*”, no matter what the proxy does in its internal implementation. This “no rewrite” rule prevents the proxy from changing the meaning of the request when the origin server is improperly using a non-reserved URL character for a reserved purpose. Implementers should be aware that some pre-HTTP/1.1 proxies have been known to rewrite the Request-URI.

By itself, the “abs_path” is a Relative URI.

> Randy

Carl