Open a socket to allow client connections to it:

Connect a client to it:

Close the sockets:

Open a ZMQ socket:

Connect a client to the server:

Write a message from the client to the server:

Read the message on the server:

Close the sockets:

After clients have connected to an opened TCP socket, the clients can each be accessed as a SocketObject with the property "ConnectedClients".

Open a server socket to allow connections, and connect a client to the socket:

List the client sockets from the server's perspective:

These sockets also show up as remote sockets with Sockets:

Close the sockets:

Open a server socket on a specified IP address:

Open a server socket on a specified port:

Close the sockets:

Open a ZMQ socket of type "Push", which can be used for a one-way message pipeline:

Connect with a "Pull" socket type:

Write a message on the "Push" socket:

Read the message on the "Pull" socket:

Close the sockets:

Implement a web server in the Wolfram Language with SocketOpen.

Start listening on a TCP port:

Initially there are no connected clients:

Connect to a the server from a web browser:

Now there is at least one client from the web browser:

Write a generic response to all clients:

Finally, close the server and the connections to the clients:

Writing on a socket returned from SocketOpen only works for ZMQ sockets; for TCP sockets, you must use the "ConnectedClients" property.

Open a TCP and a ZMQ socket and connect clients:

Writing on the TCP socket fails because you have to write to a specific client:

In contrast, writing to a ZMQ socket directly works:

Close all the sockets: