src/core/net.c on line 375, column 1
(net/connect host port &opt type bindhost bindport)
Open a connection to communicate with a server. Returns a duplex
stream that can be used to communicate with the server. Type is an
optional keyword to specify a connection type, either :stream or
:datagram. The default is :stream. Bindhost is an optional string
to select from what address to make the outgoing connection, with
the default being the same as using the OS's preferred address.