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socket\tcp\Server

This module provides non-blocking TCP server.

Usage

This module provides functions for opening a TCP channel and accepting connections.

Creating a TCP channel

Function channel accepts a tuple of configuration arguments and returns a context manager representing this channel.

The tuple format for a TCP channel is: (:tcp, address, port) where the address and port is the address and port to bind on.

Example:

with socket\tcp\Server::channel (:tcp, addr port) as channel
    do
        IO::println "listening on {addr}:{port}"
        infi (\-> accept channel)
    end
end

Accepting a client connection

Function accept requires a channel context and returns a context manager representing a connection as soon as it has been estabilished.

Example: 

with daemon socket\tcp\Server::accept channel as connection
    do
       socket\tcp\Connection::write connection "welcome: "
       request = socket\Connection::read_line connection |> Seq::decode
       IO::println request
       request |> socket\Connection::write connection
    end
end

Tip

Note the use of the daemon in the example above. In this way the handling of the client is not delaying the return of this with expression. This is a useful to handle multiple clients concurrently.

Last update: May 16, 2021

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