NAME

       modbus_set_socket - set socket of the context

SYNOPSIS

       int modbus_set_socket(modbus_t *ctx, int s);

DESCRIPTION

       The modbus_set_socket() function shall set the socket or file descriptor in the libmodbus
       context. This function is useful for managing multiple client connections to the same
       server.

RETURN VALUE

       The function shall return 0 if successful. Otherwise it shall return -1 and set errno.

EXAMPLE

           ctx = modbus_new_tcp("127.0.0.1", 1502);
           server_socket = modbus_tcp_listen(ctx, NB_CONNECTION);

           FD_ZERO(&rdset);
           FD_SET(server_socket, &rdset);

           /* .... */

           if (FD_ISSET(master_socket, &rdset)) {
               modbus_set_socket(ctx, master_socket);
               rc = modbus_receive(ctx, query);
               if (rc != -1) {
                   modbus_reply(ctx, query, rc, mb_mapping);
               }
           }

SEE ALSO

       modbus_get_socket(3)

AUTHORS

       The libmodbus documentation was written by Stéphane Raimbault
       <stephane.raimbault@gmail.com>