/*
   Copyright (c) 2015, Digi International Inc.

   Permission to use, copy, modify, and/or distribute this software for any
   purpose with or without fee is hereby granted, provided that the above
   copyright notice and this permission notice appear in all copies.

   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*******************************************************************************
        bsd.c

        A demonstration of several advanced TCP/IP functions, that are used
        for namespace (DNS) issues, and finding out information about the
        remote host.
*******************************************************************************/

/*********************************************************
 * Example of the use of various naming functions
 *
 * To use:
 *     Set the IP address / netmask above.
 *     Set the domainname / hostname above.
 *     Run, and when it prints your domain name,
 *       telnet to it from another host
 *     You should see information about the connection
 *       be printed out.
 **********************************************************/
#class auto


/*
 * Pick the predefined TCP/IP configuration for this sample.  See
 * LIB\TCPIP\TCP_CONFIG.LIB for instructions on how to set the
 * configuration.
 */
#define TCPCONFIG 1


/*
 * 	Place to listen for incoming request.  23 is TELNET port.
 */
#define  MY_TEST_PORT	23

/*
 * Domain name configuration
 *
 * This sets your hostname and domainname. If your computer has an
 * internet address like: "test.zweng.com", your hostname
 * is "test", and your domainname is "zweng.com". 
 */
#define MY_HOST 	"test"
#define MY_DOMAIN	"zweng.com"

/********************************
 * End of configuration section *
 ********************************/

#memmap xmem
#use "dcrtcp.lib"

tcp_Socket tcpsock;
tcp_Socket *const s = &tcpsock;

char textbuf[64];
char *ip_to_text(longword ip)
{
	sprintf(textbuf,"%d.%d.%d.%d",
		(byte)(ip >> 24),
		(byte)(ip >> 16),
		(byte)(ip >> 8),
		(byte)(ip)
		);
	return textbuf;
}

void main()
{
	int status;
	struct sockaddr sock_addr;
	
	sock_init();

	sethostname(MY_HOST);
	setdomainname(MY_DOMAIN);

	printf("We are %s.%s\n", gethostname(NULL, 0), getdomainname(NULL, 0));

	tcp_listen((tcp_Socket*)s,MY_TEST_PORT,0,0,NULL,0);
	while( ! tcp_established( (tcp_Socket *)s ) ) {
		if( ! tcp_tick( (sock_type *) s ) ) {
			printf( "ERROR: listening\n" );
			exit( 99 );
		}
	}

	printf("Receiving incoming connection\npsocket(s) -> ");
	psocket((sock_type *)s);

	printf("\n\n");
	if(0 == getpeername((sock_type *)s, &sock_addr, NULL)) {
		printf("getpeername: %s:%d",
			ip_to_text(sock_addr.s_ip),
			sock_addr.s_port
			);
	} else {
		printf("getpeername() retuned no data!\n");
	}

	printf("\n");
	
	if(0 == getsockname((sock_type *)s, &sock_addr, NULL)) {
		printf("getmyname: %s:%d",
			ip_to_text(sock_addr.s_ip),
			sock_addr.s_port
			);	
	} else {
		printf("getsockname() retuned no data!\n");
	}

	
	printf("\n\nClosing socket...\n");
	
	sock_close(s);
	// Discard any data until fully closed.
	while(tcp_tick(s)) sock_fastread(s, NULL, 1024);
		
	printf("Socket closed. All done!\n");
}
