Hello.
I'm planning to add support for the SCTP protocol[1] in ecore_con at
some point in the near future (after I'm finished with my current
playground - more about it real soon), but as API is being frozen, I
thought I'd better send this now.
SCTP is a modern protocol with some great features:
- supports multi-homing (multiple IPs - both v4 and v6 - per client,
at least for fallback, with concurrent multipath transfers on some
implementations)
- supports multiple streams (16 bits id) over a single association
(connection) (a bit like ATM virtual channels)
However, ecore_con's API doesn't support that kind of features.
Here is thus some proposals:
- for multi-homing:
- add Eina_List *ecore_con_{server,client}_ips_get(), returning an
Eina_List of char *, like ecore_con_{server,client}_ip_get, that
will be returning the first ip for SCTP
- another proposal would be to make ecore_con_{server,client}_ip_get
return the list instead of a sole IP like now (though this is maybe
much too invasive)
- for multiple streams:
- we could make a new client for each stream, with new
- Ecore_Con_Client *ecore_con_client_parent_get(Ecore_Con_Client *child),
that would give the 0th,
- int ecore_con_client_child_id_get(Ecore_Con_Client *child),
that would give this client id,
- Ecore_Con_Client *ecore_con_client_child_get(Ecore_Con_Client *parent,
int id),
that would give the nth stream, creating a new Ecore_Con_Client
if needed
- Eina_List *ecore_con_client_children_get(Ecore_Con_Client *parent)
- add an int stream to Ecore_Con_Event_{Client/Server}_Data and
ecore_con_{client,server}_send()
This can also be of use for TCP, as we could use the Out-Of-Band
bit to have a second stream.
Please comment on these propositions.
Cheers!
Chidambar
[1] RFC4960 "Stream Control Transmission Protocol"
http://tools.ietf.org/html/rfc4960
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