WebSocket:Send

Sends a message through the WebSocket connection.

Syntax

WebSocket:Send(message: string, isBinary?: boolean) -> ()

Parameters

Parameter	Type	Description
`message`	`string`	The message to send
`isBinary`	`boolean?`	Send a binary frame when true; defaults to false

Returns

This method does not return a value.

Description

WebSocket:Send transmits the bytes in message as a text frame by default, or as a binary frame when isBinary is true. Calling it after Close is a no-op.

Example

local ws = WebSocket.connect("wss://your-server.example/socket")

-- Send a simple message
ws:Send("Hello, Server!")

JSON Communication

local HttpService = game:GetService("HttpService")
local ws = WebSocket.connect("wss://your-server.example/socket")

-- Send JSON data
local function sendJSON(data)
    ws:Send(HttpService:JSONEncode(data))
end

sendJSON({
    type = "subscribe",
    channel = "updates"
})

sendJSON({
    type = "message",
    content = "Hello!",
    timestamp = os.time()
})

Binary Message

local ws = WebSocket.connect("wss://your-server.example/socket")
local bytes = string.char(0x00, 0x01, 0x02, 0xFF)
ws:Send(bytes, true)

Notes

Luau strings can contain arbitrary bytes
Send does not return a delivery acknowledgement
Check IsClosed before sending if another part of your script may close the client

WebSocket.connect - Create connection
OnMessage - Receive responses

WebSocket:Send

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