[SIPForum-discussion] record route

[杨伟]

So you mean that the Record-Route header MUST be copied to the Route header
without any change?

2008/8/5, Franz Edler <franz.edler at inode.at>:
>
> Hi,
>
> > So in general is it true that Servers can introduces new parameters to
> any
> > header field even though they are not in the specification.
>
> No; not in general to any header field, but to Record-Route. Because the
> content of the Record-Route header field is copied onto the Route header
> field and the Route header field is only relevant for the server addressed
> by the Route header field.
>
> > All the sip entities which do not understand the parameter should ignore
> > the same.
>
> That's also not true. There are certain rules haow to handle unrecognized
> headers and parameters. Be aware of Require and Proxy-Require header
> fields.
>
> Franz
>
>
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