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Once a client has sought a connection with the server, it is up to the
server to accept the connection. Acceptance is arranged via a call to
accept:
new_socket_number
= accept (socket_number,
(struct sockaddr *) &client_addr,
&client_length);
The first argument, yet again, is the socket number established by the call
to socket. The second and third arguments are supplied via addresses
so that the accept call can supply the server with information about
the client. In the server developed here, this information is not used.