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→Websession proposed changes: new section
[[User:Filfat|Filfat]] ([[User talk:Filfat|talk]]) 11:27, 13 January 2017 (CST)
[[User:Filfat|Filfat]] ([[User talk:Filfat|talk]]) 11:27, 13 January 2017 (CST)
== Websession proposed changes ==
I tried edit the page but ends considered being spam
These are the changes I want do
Next info was tested in 9.0.0
In the js side, there is a method called <code>window.nx.sendMessage(arg)</code> that sends data to the native side, this method returns a boolean indicating if sending was succesful and accepts a string as an argument. The string is encoded like a C null terminated string in the message content. For receive messages from native part, there is a dom event called <code>message</code> which is dispatched when a message arrives. The event can be listened using <code>window.nx.addEventListener("message", callback)</code> being callback a function which first parameter is like a dom event arg and contains a member called <code>data</code> which contains the string decoded from the arrived message
If messages aren't acked by the native part, js side will not longer receive messages. Ack to web applet '''must''' have 4 bytes after the message content or will crash.
==== SessionMessage ====
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x10
| [[#SessionMessageHeader]]
|-
| 0x10
| Size from header
| Message content
|-
| After message content
| 0x4 if message is ack, 0x0 otherwise
| Padding
|}
==== SessionMessageHeader ====
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x4
| Message ID
|-
| 0x4
| 0x4
| Content size following the header.
|-
| 0x8
| 0x8
| Unused
|}
==== IDs ====
{| class="wikitable" border="1"
|-
! ID
! Content size
! Description
|-
| 0x0
| Arbitrary
| Arbitrary content. Used to communicate with the applet via JsExtensions used by the Js being run by the applet on the current page.
|-
| 0x1000
| 0xc
| Ack. Content: first u32 is the entire storage size of the message being acked, the rest is not used.
|}
[[User:Amicuchu|Amicuchu]] ([[User talk:Amicuchu|talk]]) 16:43, 5 January 2020 (UTC)