1222306 - [TV 2.5] Expose remote control service via mDNS

Status: RESOLVED DUPLICATE of bug 1197749

(Firefox OS Graveyard :: Gaia::TV::System, defect)

Description

[Luke Chang [:lchang] (inactive)]

To provide a seamless experience, we would like to expose remote control service via mDNS.

Comment 1

[Shih-Chiang Chien [:schien] (UTC+8) (use ni? plz)]

We can use |nsIDNSServiceDiscovery.registerService()|[1] to broadcast the control page via mDNS. DNS-SD already defined a "http" service type for it [2].

Here is the pseudo code for it.

let serviceInfo = Cc["@mozilla.org/toolkit/components/mdnsresponder/dns-info;1"].createInstance(Ci.nsIDNSServiceInfo);

serviceInfo.serviceType = "_http._tcp";
serviceInfo.serviceName = Services.prefs.getCharPref("dom.presentation.device.name");
serviceInfo.port = ... //the port number of http server

let attributes = Cc["@mozilla.org/hash-property-bag;1"].createInstance(Ci.nsIWritablePropertyBag2);
attributes.setPropertyAsACString("path", "/index.html");
serviceInfo.attributes = attributes;

let mdns = Cc["@mozilla.org/toolkit/components/mdnsresponder/dns-sd;1"].getService(Ci.nsIDNSServiceDiscovery);

mdns.registerService(serviceInfo, some_listener);


[1] https://dxr.mozilla.org/mozilla-central/source/netwerk/dns/mdns/nsIDNSServiceDiscovery.idl#201
[2] http://www.dns-sd.org/txtrecords.html#http

Comment 2

[C.M.Chang[:chunmin]]

It's seems that we don't expose |attributes| to fennec now[1].

[1] https://dxr.mozilla.org/mozilla-central/source/mobile/android/base/mdns/MulticastDNSManager.java#197

Comment 3

[Eric Tsai (no more review request accepted)]

Attachment: 0001-Bug-1222306-Expose-remote-control-service-via-mDNS.patch