modbus_set_socket man page on DragonFly

modbus_set_socket man page on DragonFly

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MODBUS_SET_SOCKET(3)	       Libmodbus Manual		  MODBUS_SET_SOCKET(3)

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[1]>

NOTES
	1. stephane.raimbault@gmail.com
	   mailto:stephane.raimbault@gmail.com

libmodbus 3.1.0			  10/06/2013		  MODBUS_SET_SOCKET(3)

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