@ 関西Firefox OS勉強会

1. e10s
@makoto_kato

2. about:me
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3. •Rust Samurai #4-https://atnd.org/events/54657

4. Agenda
•Electrolysis (e10s) ?
•Firefox OS

5. •Firefox / Gecko

6. e10s
•FirefoxOut-Of-Process Plugin
•Firefox 3.6
•FirefoxDRM/CDM(Content Decryption Module)
•Firefox 3x?
•FirefoxChromeContent
•(Nightly)
•Firefox OS

7. Firefox OS
•b2g
•plugin-container
•
•APIb2g

8. Kernel / Gonk
b2g process
Plugin- container
process
(Apps)
Plugin- container process
(Apps)
Hardware Access
IPC
IPC

9. (IPC)
•ChromiumIPC
•IPCIPDL
•IDL

10. IPDL
•IDL
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•IPDL
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11. ipdl
hal/sandbox/PHal.idl
sync protocol PHal{
…
child:
NotifyBatteryChange(
BatteryInformationaBatteryInfo);
…
parent:
Vibrate(uint32_t[] pattern, uint64_t[] id,
PBrowserbrowser);
}

12. ()
@OBJDIR@/ipc/ipdl/_ipdlheaders/mozilla/hal_sandbox/PHal.h
class Msg_NotifyBatteryChange:
public IPC::Message
…
}

13. ()
@OBJDIR@/ipc/ipdl/_ipdlheaders/mozilla/hal_sandbox/PHalChild.h
class /*NS_ABSTRACT_CLASS*/ PHalParent:
public mozilla::ipc::IProtocol,
protected mozilla::ipc::IProtocolManager<mozilla::ipc::IProtocol>
{
…
virtual bool
RecvVibrate(
constnsTArray<uint32_t>& pattern,
constnsTArray<uint64_t>& id,
PBrowserParent* browser) = 0;
…
bool
SendNotifyBatteryChange(constBatteryInformation& aBatteryInfo) NS_WARN_UNUSED_RESULT;

14. ()
@OBJDIR@/ipc/ipdl/_ipdlheaders/mozilla/hal_sandbox/PHalChild.h
class /*NS_ABSTRACT_CLASS*/ PHalChild:
public mozilla::ipc::IProtocol,
protected mozilla::ipc::IProtocolManager<mozilla::ipc::IProtocol>
{
…
virtual bool
RecvNotifyBatteryChange(constBatteryInformation& aBatteryInfo) = 0;
…
bool
SendVibrate(
constnsTArray<uint32_t>& pattern,
constnsTArray<uint64_t>& id,
PBrowserChild* browser);

15. template<>
structParamTraits<mozilla::WidgetGUIEvent>
{
typedefmozilla::WidgetGUIEventparamType;
static void Write(Message* aMsg, constparamType& aParam)
{
WriteParam(aMsg, static_cast<mozilla::WidgetEvent>(aParam));
WriteParam(aMsg, aParam.mPluginEvent.mBuffer);
}
static boolRead(constMessage* aMsg, void** aIter,
paramType* aResult)
{
return ReadParam(aMsg, aIter,
static_cast<mozilla::WidgetEvent*>(aResult)) &&
ReadParam(aMsg, aIter, &aResult->mPluginEvent.mBuffer);
}

16. IPC
•B2g(Chrome) (Content)
•b2g

17. •XMLHttpRequsest
•WebSocket
•Socket (TCP/UDP)
•Web Activity
•Inter App Communication

18. XMLHttpRequest/ WebSocket
•

19. XMLHttpRequest/ WebSocket
•
•HTTP
•Firefox OSDaemon ProcessDaemon Process
•DRM
•LocalhostNetwork Activity

20. Socket API
•TCP or UDP Socket
•
•

21. TCPSocket ()
varsocket = new navigator.mozTCPSocket.open(
‘127.0.0.1’, 8888, { binaryType: ‘string’ } );
socket.onopen= function() {
};
socket.ondata= function(msg) {
//
};
…
socket.send(‘hello’);

22. TCP Server Socket
varsocket = navigator.mozTCPSocket.listen(8888, { binaryType: ‘string’ });
Socket.onconnect= function() {
//
}
…

23. UDP Socket
varsocket = new UDPSocket();
socket.addEventListener(‘message’, function() {
//
})
socket.send(‘hello’, ‘127.0.0.1’, 8888);

24. Web Activity
•Web IntentAPI (Google Chrome) Firefox OSCounter Proposal

25. “Web Activities' intent is not to be a clone of Google's Web Intents with some naming and API details changed. Web Activities aim to be a simple API trying to solve a very clear set of use cases.” http://lists.w3.org/Archives/Public/public-web- intents/2012Jun/0061.html

26. •MozActivity

27. varactivity = new MozActivity( {
name: “pick”,
data: {
type: “image/jpeg”
}
});
activity.onsuccess= function() {
// this.result
}

28. •
•
•

29. {
“name”: ‘<Application Name>’,
“description”: ‘<Application’s description>’,
“activities”: {
“view” : {
“filters”: {
“type” : “image/tiff”
}
}
}
}

30. varregister = navigator.mozRegisterActivityHandler({
name: “view”,
disposition: “inline”,
filters: {
type: “image/tiff”;
}
}

31. navigator.mozSetMessageHandler(‘activity’, function(request) {
//
request.postRequest(…);
}

32. Web Activity
•
•1:n
•

33. Inter-App Communication (IAC)
•Firefox OS 1.2+
•Certified App only
•Web Activity
•
•–Publisher
•
•-Subscriber

34. “connections” {
“<keyword>” : {
“handler_path”: “/index.html”,
“description”: “description”,
“rules” : {
“manifestURLs”: “<url>”,
…
}
}
}

35. navigator.mozApps.getSelf().onsuccess= function(ev) {
varapp = ev.target.result;
app.connet(‘<keyword>’, rules).then(function(ports) {
// connected
ports.forEach(function(port) {
port.onmessage= function(evt) {
// received data
});
port.postMessage({ value: ‘hello’ });
}
}, function(reason) {
// reject
});
};

36. navigator.mozSetMessageHandler(‘connection’,
function(request) {
varkeyword = request.keyword;
varport = request.port;
port.onmessage= function(evt) {
varmessage = evt.data;
port.postMessage({ value: “Hello” });
}
});

37. Inter App Communication
•Certified App
•Certified
•1:1

38. •e10sGecko
•Gecko
•Firefox OS(Web Activity / Inter- App Communication) e10s
•APINetwork Activity
•Gecko
•XMLHttpRequest/ WebSocket/ Socket API

39. References
•mozTCPSocket
•https://developer.mozilla.org/en- US/docs/Web/API/Navigator.mozTCPSocket
•WebActivities
•https://developer.mozilla.org/en- US/docs/Web/API/Web_Activities
•Inter App Communication
•https://wiki.mozilla.org/WebAPI/Inter_App_Communication
•https://bugzilla.mozilla.org/show_bug.cgi?id=907068