[ECOS] Problem Establishing socket Connection

[kevin_lemay at agilent dot com]

I am trying to port some working vxWorks code over the eCos. This includes some standard BSD socket connections.

I am encountering a problem within eCos. It has decided that I am trying to establish a network connection to a multicast socket, which is not the case.

We are attempting to connect to 130.30.174.109 (x821eae6d), port 5678.

I am using the CVS version of eCos as of Friday on an i386 platform.

The error occurs in tcp_usrrec.c at line 341


 	336		/*
 	337		 * Must disallow TCP ``connections'' to multicast addresses.
 	338		 */
 	339		sinp = (struct sockaddr_in *)nam;
-	340		if (sinp->sin_family == AF_INET
-	341		    && IN_MULTICAST(ntohl(sinp->sin_addr.s_addr))) {
-	342			error = EAFNOSUPPORT;
-	343			goto out;
 	344		}

(gdb) p nam
$2 = (struct sockaddr *) 0x185ba0

(gdb) x/16w nam
0x185ba0 <main_stack+6816>:	0x2e160200	0x6dae1e82	0x00000000	0x00000000
0x185bb0 <main_stack+6832>:	0x00000000	0x00000000	0x00000000	0x00000000
0x185bc0 <main_stack+6848>:	0x00000002	0x11110000	0x00185be8	0x001349e0
0x185bd0 <main_stack+6864>:	0x00173dd1	0x0000162e	0x52725c78	0x00000004

(gdb)

The code that attempts to connect is:

    int rc;
    struct sockaddr_in servAddr;
    int socketId;

    /* Server side */
    bzero(&servAddr, sizeof(servAddr));
    servAddr.sin_family = AF_INET;
    inet_aton(srvIpAddress, &servAddr.sin_addr);
    servAddr.sin_port = htons(port);

    /* create socket */
    socketId = socket(AF_INET, SOCK_STREAM, 0);
    
    if (socketId < 0)
    {
        return( -1 );
    }

    /* connect to server */
    rc = connect(socketId, (struct sockaddr *) &servAddr,
sizeof(servAddr));
    if (rc<0)
    {
        close(socketId);
        socketId = 0;
        return(-1);
    }
    return(socketId);

Debug Console Output:

0x0000ccf8 in ?? () at
/opt/ecos/ecos_cvs/ecos/packages/net/common/current/src/getserv.c:60
Loading section .text, size 0x69799 lma 0x108000
Loading section .rodata, size 0xa7ab lma 0x1717a0
Loading section .data, size 0x1bb0 lma 0x17bf50
Start address 0x108000, load size 482036
Transfer rate: 192814 bits/sec, 319 bytes/write.
[cyg_net_init] Init: mbinit(0x00000000)
[cyg_net_init] Init: cyg_net_init_devs(0x00000000)
Init device 'i82559_eth0'
[cyg_net_init] Init: loopattach(0x00000000)
[cyg_net_init] Init: ifinit(0x00000000)
[cyg_net_init] Init: domaininit(0x00000000)
[cyg_net_init] Init: cyg_net_add_domain(0x0017d300)
New domain internet at 0x00000000
[cyg_net_init] Init: cyg_net_add_domain(0x0017cc40)
New domain route at 0x00000000
[cyg_net_init] Init: call_route_init(0x00000000)
[cyg_net_init] Done
[New Thread 4]
[Switching to Thread 4]

Breakpoint 5, main () at osmain.c:78

(gdb) info break
Num Type           Disp Enb Address    What
1   breakpoint     keep y   0x0013ed40 in walkPciCreatePorts at
osmain.c:451
2   breakpoint     keep y   0x0013d394 in openSocket at
/home/klemay/prj/TestbaseV2/c/oslib.c:81
3   breakpoint     keep y   0x0014259e in bsd_connect at
/opt/ecos/ecos_cvs/ecos/packages/net/bsd_tcpip/current/src/sys/kern/sockio.c:267
5   breakpoint     keep y   0x0013e92d in main at osmain.c:78
	breakpoint already hit 1 time

(gdb) c
Continuing.
BOOTP[eth0] op: REQUEST
       htype: Ethernet
        hlen: 6
        hops: 0
         xid: 0xa1d2024b
        secs: 0
       flags: 0x80
       hw_addr: 00:02:b3:1f:02:4b
     client IP: 0.0.0.0
         my IP: 130.30.173.222
     server IP: 156.140.232.41
    gateway IP: 130.30.172.1
  options:
        DHCP message: 3 REQUEST
        DHCP server id: 156.140.232.41
        DHCP time 51: 604800
        DHCP time 58: 302400
        DHCP time 59: 529200
        subnet mask: 255.255.252.0
            gateway: 130.30.172.1
      domain server: 156.140.238.22, 156.140.232.41
        domain name: rose.agilent.com.
       IP broadcast: 255.255.255.255
Unknown option: 2c/44.8: 130 29 152 23 130 29 154 21
Unknown option: 2e/46.1: 8
          host name: rg-dhcp7.
        DHCP option: 37/55.9: 54 51 58 59 1 3 6 15 28
        DHCP option: 39/57.2: 576
        DHCP requested ip: 130.30.173.222


Any help would be appreciated.

Kevin Lemay

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