[OSC_dev] absolute urls using zeroconf

[Gaspard Bucher]

Hi list !
While working on the oscit library I came upon a difficult problem:

How to specify absolute urls to an arbitrary remote location ?

There are four cases to this problem:

1. we can resolve IP for the remote host and we know the port number
oscit://example.org:7043/path/to/resource

2. we can resolve IP for the remote host but we do not know the port number
oscit://example.org/path/to/resource
===> oscit can use SRV records from example.org DNS
===> we have a problem if multiple oscit devices run on the same machine
(see below)

3. we do not know the port and/or ip (local network)
"name of service entity"/path/to/resource
===> oscit will use zeroconf to find "name of service entity" responding to
_oscit._udp protocol.

4. we can resolve IP for the remote host and want to specify entity name
oscit://example.org/"name of service entity"/path/to/resource


This means oscit would resolve the following url formats:

foo/bar (relative, same application)

/foo/bar (absolute, same application)

"some device"/foo/bar (service on local network)

oscit://example.org:7070/foo/bar (far remote, known port)

oscit://example.org/foo/bar (far remote, unknown port, using first service
in SRV records)

oscit://example.org/"some device"/foo/bar (far remote, unknown port, using
specific service from SRV records)


Please tell me if you feel there is something wrong with any of these
urls...

Gaspard
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