WebSocket

new WebSocket(url, protocols)

Param
Type
Description
url
string
The URL to which to connect; this should be the URL to which the WebSocket server will respond.
protocols
string | Array.<string>
Either a single protocol string or an array of protocol strings. Example usage: var ws = new WebSocket("ws://demos.kaazing.com/echo","xmpp"); Throws an exception of Error Object if invalid url or protocols is passed

webSocket.protocol

Returns: string - returns a string indicating the name of the sub-protocol the server selected; this will be one of the strings specified in the protocols parameter when creating the WebSocket object.

webSocket.bufferedAmount

Returns: number - returns the number of bytes of data that have been queued using calls to send() but not yet transmitted to the network. This value resets to zero once all queued data has been sent. This value does not reset to zero when the connection is closed; if you keep calling send(), this will continue to climb. Read only

webSocket.binaryType

Param
Type
Description
data
string
A string indicating the type of binary data being transmitted by the connection. This should be either "blob" if DOM Blob objects are being used or "arraybuffer" if ArrayBuffer objects are being used.

webSocket.binaryType

Returns: string - returns the string indicating the binary data type.

webSocket.send(data)

Enqueues the specified data to be transmitted to the other end over the WebSocket connection, increasing the value of bufferedAmount by the number of bytes needed to contain the data. If the data can't be sent (for example, because it needs to be buffered but the buffer is full), the socket is closed automatically.

Param
Type
Description
data
string | ArrayBuffer | ArrayBufferView
Data to be sent Example usage: ws.send(new Float32Array([ 5, 2, 1, 3, 6, -1 ])) ws.send(new Int32Array([5,-1]).buffer)

webSocket.close([code], [reason])

Closes the websocket connection

Param
Type
Default
Description
[code]
integer
1000
A integer value as per https://developer.mozilla.org/en-US/docs/Web/API/WebSocket#close(.
[reason]
string
&quot;&quot;
A human-readable string explaining why the connection is closing. Throws an exception of Error Object if invalid code or reason is passed