B4J Question Websocket Server to server data to any websocket client(not b4x)

tufanv said:

I want to simply push json data to clients but with that tutorial it is only possible to send data like this which is for b4x clients:
{"prop":"ServerTime","etype":"runFunction","value":[51]}

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OliverA said:

If you just want to send raw text, you can try this (note ws is set in WebSocket_Connected by the B4J template for a Server application):

B4X:

    Dim jo As JavaObject = ws
    jo = jo.GetFieldJO("session")
    Dim remoteJo As JavaObject = jo.RunMethodJO("getRemote", Null)
    remoteJo.RunMethod("sendString", Array("Some value", Null))

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{type: "event", event: xxxx, params: { p1name: p1value, p2name: p2value, ... } }

{type: "event", event: "hello_world", params: {firstname: "John", lastname: "Doe"}}

Public Sub hello_word(values As Map)
  Log($"Hello ${values.GetDefault("firstname", "Nothing")} ${values.GetDefault("lastname", "Nothing")}"$)
End Sub

Hello John Doe

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OliverA said:

You have to sent a JSON string to the server in the following format:

JSON:

{type: "event", event: xxxx, params: { p1name: p1value, p2name: p2value, ... } }

Where xxxx is the sub name that will be called on the B4J side. This sub name needs to include an underscore (_). So valid sub name:
subscribe_currency
Invalid subname:
suscribeCurrency
The params value is another JSON map that contains 0 or more key values itself. This map will be converted to a B4J map and will be passed on as the parameter for the sub that is called.

So sending

JSON:

{type: "event", event: "hello_world", params: {firstname: "John", lastname: "Doe"}}

And having the following code in the Server Socket Handler routine

B4X:

Public Sub hello_word(values As Map)
  Log($"Hello ${values.GetDefault("firstname", "Nothing")} ${values.GetDefault("lastname", "Nothing")}"$)
End Sub

Should log

on the server side.
Note: Code not tested. May contain show stopping typos.

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