Re: Need some help with the TINI EVAL Kit

There are a few problems with this program:

1) You should clear out the 'socketaddress' to all 0's.  This is not done
automatically for you, whatever garbage is already there will be present in
sin_addr[0..11].
2) Change 'unsigned char result' to 'int result'...the socket functions have
16-bit return values.
3) You need to bind before you connect.
4) You might also want to change your switch statement at the bottom to have
a success case when the return value is 0, so you don't get confused and see
an error message even though the return value is 0.

Kris

----- Original Message -----
From: "Desai, Sohail" <[email protected]>
To: "Kris Ardis" <Kristopher.Ardis-6tN4nzCoH/[email protected]>; <[email protected]>
Sent: Friday, February 27, 2004 4:23 PM
Subject: RE: [TINI]Need some help with the TINI EVAL Kit


Hi Kris,

Thanks for your reply, here is my code for creating a HTTP client:
*********************************************************************
#include "rom400_dhcp.h"
#include "rom400_sock.h"
#include "rom400_init.h"
#include "rom400_task.h"
#include "tini400_dns.h"
#include "rom400_err.h"
#include <stdio.h>


#define RAM_START 0x14000
#define RAM_END 0x5FFFF

void network_config()
{
    unsigned char config[60];
    unsigned int result;
    unsigned int i;
    for (i=0;i<56;i++)
        config[i] = 0;

    result = getnetworkparams(config);
    printf("Network params result: %d\r\n", result);

    printf("IP    : %bu.%bu.%bu.%bu\r\n", config[12], config[13],
config[14], config[15]);
    printf("Subnet: %bu.%bu.%bu.%bu\r\n", config[16], config[17],
config[18], config[19]);
    printf("Prefix: %bu\r\n", config[20]);
    printf("Gate  : %bu.%bu.%bu.%bu\r\n", config[33], config[34],
config[35], config[36]);

}

void main()
{
unsigned int temp;
unsigned char result;
struct hostent* hostresult;
struct sockaddr socketaddress;
char* info;
char buffer[20];
char buffer2[] = "GET /index.html HTTP/1.0\r\n \r\n";
int handle1;

init_rom(RAM_START,RAM_END);

clear_param_buffers();

dhcp_init();

result = task_wait(0, FLAG_DHCP_WAIT, 20000);

temp = dhcp_status();

switch (temp)
    {
        case DHCP_STATUS_INIT       : printf("DHCP: Init\r\n");
                                      break;
        case DHCP_STATUS_SELECTING  : printf("DHCP: Selecting\r\n");
                                      break;
        case DHCP_STATUS_REQUESTING : printf("DHCP: Requesting\r\n");
                                      break;
        case DHCP_STATUS_INITREBOOT : printf("DHCP: Init reboot\r\n");
                                      break;
        case DHCP_STATUS_REBOOTING  : printf("DHCP: Rebooting\r\n");
                                      break;
        case DHCP_STATUS_BOUND      : printf("DHCP: Bound\r\n");
                                      break;
        case DHCP_STATUS_RENEWING   : printf("DHCP: Renewing\r\n");
                                      break;
        case DHCP_STATUS_REBINDING  : printf("DHCP: Rebinding\r\n");
                                      break;
    }

network_config();

printf("Getting IP address for www.google.com\r\n");

hostresult = gethostbyname("www.google.com");

info = hostresult->h_addr_list[0];

if(info == NULL)
{
printf("DNS lookup failed.\r\n");
}
else
{

printf("lenght of address:
%u\r\n",hostresult->h_length);

printf("The IP address is:
%s\r\n",inet_ntop(hostresult->h_addrtype,info,buffer,20));

socketaddress.sin_port = 80;

printf("Setting Socket Port
to:%u\r\n",socketaddress.sin_port);

socketaddress.sin_addr[12] = info[0];
socketaddress.sin_addr[13] = info[1];
socketaddress.sin_addr[14] = info[2];
socketaddress.sin_addr[15] = info[3];

printf("creating socket to www.google.com.\r\n");

handle1 = syn_socket(SOCKET_TYPE_STREAM);

result = connect(handle1,&socketaddress,sizeof(struct
sockaddr));

printf("%x\r\n",result);

switch(result)
{
case ROM400_CONNECTEXCEPTION:
printf("rom 400 connect exception\r\n");
break;

case ROM400_SOCKETEXCEPTION:
printf("rom 400 socket exception\r\n");
break;

default:
printf("unknown error.. connection failed\r\n");
break;
}


/* {
printf("socket creation successful.\r\n");

printf("Sending a request using GET
command.\r\n");
syn_send(handle1,sizeof(buffer2),buffer2);

*/
closesocket(handle1);

// }

}
    while(1);

}

************************************************************************
***

I am monitoring the communication through ethereal. The DHCP request and
DNS lookup work fine but not the socket creation. Thanks for all your
help. BTW I checked the ROM error codes as you advised and I keep on
getting a ROM 400 CONNECT EXCEPTION. What does this mean?

Sohail


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