This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

(as draft)

This interface provides properties that can be used for requesting channels through different contact addressing schemes like vCard addresses or URIs.

The vCard field, normalized to lower case, TargetVCardAddress refers to.

The url vCard field MUST NOT appear here; see TargetURI instead.

In practice, protocols have a limited set of URI schemes that make sense to resolve as a contact.

If this is omitted from a request, TargetVCardAddress MUST be omitted as well.

The URI scheme used in TargetURI

While this seems redundant, since the scheme is included in TargetURI, it exists for constructing RequestableChannelClasses that support a limited set of URI schemes.

If this is omitted from a request, TargetURI MUST be omitted as well.

The vCard address of the Channel's target.

If this is present in a channel request, TargetVCardField MUST be present, and TargetHandle, TargetID, and TargetURI MUST NOT be present. TargetHandleType must either not be present or set to Handle_Type_Contact. The request MUST fail with error InvalidHandle, without side-effects, if the requested vCard address cannot be found.

The URI of the Channel's target. The URI's scheme (i.e. the part before the first colon) MUST be identical to TargetURIScheme.

If this is present in a channel request, TargetVCardField MUST be present, and TargetHandle, TargetID, and TargetVCardAddress MUST NOT be present. TargetHandleType must either not be present or set to Handle_Type_Contact. The request MUST fail with error InvalidHandle, without side-effects, if the requested vCard address cannot be found.