Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

For additional information see http://www.ethernut.de/

$Log$ Revision 1.6 2009/02/18 12:18:58 olereinhardt 2009-02-18 Ole Reinhardt <ole.reinhardt@thermotemp.de>

Fixed compilier warnings. Especialy signedness of char buffers as well as unused code on arm platform and main functions without return value

Revision 1.5 2006/07/21 09:07:48 haraldkipp Fixed warnings about wrong signedness.

Revision 1.4 2005/11/22 09:14:13 haraldkipp Replaced specific device names by generalized macros.

Revision 1.3 2005/04/19 08:53:56 haraldkipp Added more detailed description

Revision 1.2 2003/11/04 17:46:52 haraldkipp Adapted to Ethernut 2

Revision 1.1 2003/08/05 18:59:05 haraldkipp Release 3.3 update

Revision 1.7 2003/05/08 12:00:53 harald Changed target to famous spammer

Revision 1.6 2003/02/04 18:19:37 harald Version 3 released

Revision 1.5 2003/02/04 16:24:32 harald Adapted to version 3

Revision 1.4 2002/06/12 10:55:54 harald *** empty log message ***

Revision 1.3 2002/06/04 19:11:29 harald *** empty log message ***

Revision 1.2 2002/05/08 16:02:30 harald First Imagecraft compilation

Requests an URL from the Internet and transfers the HTML source code to the serial device.

Your local Ethernet network must provide Internet access. Connect the RS232 port of the Ethernut with a free COM port of your PC and run a terminal emulator at 115200 Baud.

If your local network does not support DHCP, it may be required to modify the MY_IP, MY_MASK and MY_GATE below.

This sample demonstrates DNS query and default route usage.

#define DNSSERVERIP     "192.168.192.2"
#define INETSERVER      "www.kornet.net"
#define INETSERVERPORT  80
#define INETURL         "/"
#define MY_MAC          {0x00,0x06,0x98,0x20,0x00,0x00}
#define MY_IP           "192.168.192.100"
#define MY_MASK         "255.255.255.0"
#define MY_GATE         "192.168.192.3"

#include <string.h>
#include <stdio.h>
#include <io.h>

#include <dev/board.h>

#include <sys/heap.h>
#include <sys/thread.h>
#include <sys/timer.h>
#include <sys/socket.h>
#include <sys/confnet.h>

#include <arpa/inet.h>
#include <net/route.h>
#include <netdb.h>

#include <pro/dhcp.h>

static char buff[1024];
static uint8_t my_mac[] = MY_MAC;

/*
 * Main application routine. 
 *
 */
int main(void)
{
    uint32_t baud = 115200;
    TCPSOCKET *sock;
    FILE *stream;
    uint32_t rip;
    uint32_t ip_addr;
    int bite;
    size_t rc;
    size_t len;
    uint32_t start_time;
    uint32_t total_bytes;

    /*
     * Initialize the uart device.
     */
    NutRegisterDevice(&DEV_CONSOLE, 0, 0);
    freopen(DEV_CONSOLE_NAME, "w", stdout);
    _ioctl(_fileno(stdout), UART_SETSPEED, &baud);
    puts("\nInetQuery 1.0");

#ifdef DEV_ETHER
    /*
     * Register Realtek controller at address 8300 hex and interrupt 5.
     */
    puts("Configuring Ethernet interface");
    NutRegisterDevice(&DEV_ETHER, 0, 0);

    /*
     * Try DHCP. First use MAC from EEPROM.
     */
    if (NutDhcpIfConfig("eth0", 0, 60000) && NutDhcpIfConfig("eth0", my_mac, 60000)) {
        /*
         * No DHCP server available. Use hard coded values.
         */
        ip_addr = inet_addr(MY_IP);
        NutNetIfConfig("eth0", my_mac, ip_addr, inet_addr(MY_MASK));
        NutIpRouteAdd(0, 0, inet_addr(MY_GATE), &DEV_ETHER);
        NutDnsConfig2(0, 0, inet_addr(DNSSERVERIP), 0);
    } else
        ip_addr = confnet.cdn_ip_addr;
    printf("%s ready\n", inet_ntoa(ip_addr));


    /*
     * Resolve hostname using DNS.
     */
    if ((rip = NutDnsGetHostByName((uint8_t*)INETSERVER)) != 0) {

        /*
         * Let's try a stdio stream first.
         */
        if ((sock = NutTcpCreateSocket()) != 0) {

            /*
             * Connect a HTTP server in the Internet.
             */
            printf("Connecting %s:%u\r\n", inet_ntoa(rip), INETSERVERPORT);
            if (NutTcpConnect(sock, rip, INETSERVERPORT) == 0) {

                /*
                 * Assign a stream to our connected socket.
                 */
                if ((stream = _fdopen((int) sock, "r+b")) != 0) {
                    /*
                     * Send HTTP request to the server.
                     */
                    fprintf(stream, "GET %s HTTP/1.0\r\n", INETURL);
                    fputs("User-Agent: Ethernut [en] (NutOS)\r\n", stream);
                    fputs("\r\n", stream);
                    fflush(stream);

                    /*
                     * Init measure values.
                     */
                    start_time = NutGetTickCount();
                    total_bytes = 0;

                    /*
                     * Read server response and send it to the UART.
                     */
                    while (fgets(buff, sizeof(buff), stream)) {
                        puts(buff);
                        total_bytes += strlen(buff);
                    }
                    printf("Transfered %lu bytes in %lu seconds\n", total_bytes, (NutGetTickCount() - start_time) / 16UL);
                    fclose(stream);
                } else
                    puts("Creating stream device failed");

            } else {
                printf("Bad news, %s refuses the connection.\n", INETSERVER);
            }
            printf("Disconnecting %s:%u\n", inet_ntoa(rip), INETSERVERPORT);
            NutTcpCloseSocket(sock);
        }

        NutSleep(5000);

        /*
         * Now let's use native calls.
         */
        if ((sock = NutTcpCreateSocket()) != 0) {

            /*
             * Connect a HTTP server in the Internet.
             */
            printf("Connecting %s:%u\r\n", inet_ntoa(rip), INETSERVERPORT);
            if (NutTcpConnect(sock, rip, INETSERVERPORT) == 0) {

                /*
                 * Send HTTP request to the server. NutTcpSend() doesn't
                 * guarantee to send out all bytes, thus the loop.
                 */
                strcpy(buff, "GET " INETURL " HTTP/1.0\r\nUser-Agent: Ethernut [en] (NutOS)\r\n\r\n");
                len = (int) strlen(buff);
                for (rc = 0; rc < len; rc += bite)
                    if ((bite = NutTcpSend(sock, buff + rc, len - rc)) <= 0)
                        break;

                /*
                 * Init measure values.
                 */
                start_time = NutGetTickCount();
                total_bytes = 0;

                /*
                 * Read server response and send it to the UART.
                 */
                while ((bite = NutTcpReceive(sock, buff, sizeof(buff) - 1)) > 0) {
                    total_bytes += bite;
                    buff[bite] = 0;
                    puts(buff);
                }
                printf("Transfered %lu bytes in %lu seconds\n", total_bytes, (NutGetTickCount() - start_time) / 16UL);
            } else {
                printf("Bad news, %s refuses the connection.\n", INETSERVER);
            }
            printf("Disconnecting %s:%u\n", inet_ntoa(rip), INETSERVERPORT);
            NutTcpCloseSocket(sock);
        }
    } else
        printf("Great news, %s has been removed!\n", INETSERVER);
#endif

    for (;;)
        NutSleep(1000);
    return 0;
}