Wolfram Language Paclet Repository
Community-contributed installable additions to the Wolfram Language
ToneAr`WebSocketLink`
WebSocketServerStart  |
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Details and Options
Examples
(1)
Basic Examples
(1)
Start a secure WebSocket server with an automatically generated localhost certificate:
In[1]:=
server=
[30000,"TLS"True]
 | WebSocketServerStart |
Connect from a Wolfram client in the same kernel using WSS:
In[2]:=
client=
["wss://localhost:30000"]
| WebSocketConnect |
For browser testing, create or provide a certificate trusted by the browser. One common local-development workflow is mkcert:
mkcert -install
mkcert -pkcs12 localhost 127.0.0.1 ::1
mkcert -pkcs12 localhost 127.0.0.1 ::1
Start the server with a trusted PKCS#12 certificate. Use the password for the generated certificate file; mkcert PKCS#12 files usually use "changeit".
In[3]:=
server=
[30000,"TLS"True,"Certificate"{"localhost+2.p12","changeit"}]
| WebSocketServerStart |
A browser client can then connect with JavaScript if the certificate is trusted by the browser:
const ws = new WebSocket("wss://localhost:30000");
ws.onopen = () => ws.send("hello from browser");
ws.onopen = () => ws.send("hello from browser");
Close the client and server when finished:
In[4]:=
Close/@{client,server}
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