socket program

[gsivaram]

i need to bind socket address and port for ipv6 programming...
i canoot able to bind global ipv6 address by using normal bind command....
help me to bind ipv6 address and port number

[jephthah]

which socket library are you using?

[gsivaram]

linux sockets

[jephthah]

so, i guess that means the <sys/socket.h> library?

post the code you're using to bind and we can see whats going on.

[gsivaram]

i need to bind to the address something like 2001:67::2
srcip="2001:67::2"

sockaddr_in6 local;
local.sin6_family=AF_INET6;
local.sin6_port = htons(port);
local.sin6_flowinfo=0;
if (srcip == NULL) {
        local.sin6_addr=in6addr_any ;
    } else {
        rc=inet_pton(AF_INET6,srcip,&(local.sin6_addr));
    }
       localsock = socket(AF_INET6,SOCK_STREAM,0);
if (bind(localsock,(struct sockaddr*)&local,sizeof(local)) < 0) {
        fprintf(stderr,"Cannot bind to the specified Address/Port\n");
        exit(1);
    }

i need to bind to global address space...but its not working

[jephthah]

your code is not compiling without a lot of effort on my end, and hence i havent been able to put much time into this while at work.

is this for a server i assume? do you have any more code along with this?

[jephthah]

the problem doesnt seem to be in your code. the problem seems to be that your ip address is refusing the bind.

at least that's the error i get. your's may be different, so try this code and see what error code is returned.

errno=0;
handle = bind(localsock,(struct sockaddr*)&local,sizeof(local));
printf( "bind -- Error #%3d: %s\n", errno, strerror( errno ) );
if (handle < 0) 
{
    fprintf(stderr,"bind command failed\n", errno);
    exit(1);
}

because your code, as written (with the assumption that you included all appropriate headers and gave a meaningful port number) ... the code works. i dont see anything wrong with it.

here was additional debug results from my run:

[jezebel@localhost cprogs]$ ./ipv6test

ipv6 = 2001:0067:0000:0000:0000:0000:0000:0002
inet_pton -- Error #  0: Success

localsock = 4
socket open -- Error #  0: Success

bind -- Error # 13: Permission denied
bind command failed

[jezebel@localhost cprogs]$

[jephthah]

so you were able to solve your problem?

because, it makes sense that I would have permission denied trying to bind as a server to your IP (I dont even know the correct port number) .... but was that the same result for you?

the fact that i got a "permission denied" error, tells me that the bind was being performed correctly, just rejected, which I would expect from my end.

did it give you the same error, and were you able to resolve it?