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Hi,

I've got a streaming server and client coded to run on SCTP. Connection establishment and teardown seems to be working fine, but there are some problems when I start using ext_getsockopt().

I've attached a small portion of the codes that calls ext_setsockopt(), ext_getsockopt() and the parameters passed into the function. These values and function calls work fine when used on other transport protocols, but I'm wondering why they don't work with a TCP-style SCTP socket. Somehow, ext_getsockopt() is always returning -1.

Thanks a lot!!




Oon, Heok Kee

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int i_handle, i_opt, i_opt_size;

i_handle = ext_socket( AF_INET, SOCK_STREAM, IPPROTO_SCTP );

i_opt = 0x80000;
if( ext_setsockopt( i_handle, SOL_SOCKET, SO_RCVBUF, (void *) &i_opt,
sizeof( i_opt ) ) == -1 )
{
intf_WarnMsg( 1, "ipv4 warning: cannot configure socket (SO_RCVBUF: %s)",
strerror(errno) );
}

i_opt = 0;
i_opt_size = sizeof( i_opt );
if( ext_getsockopt( i_handle, SOL_SOCKET, SO_RCVBUF, (void*) &i_opt,
&i_opt_size ) == -1 )
{
intf_WarnMsg( 1, "ipv4 warning: cannot query socket (SO_RCVBUF: %s)",
strerror(errno) );
}
else if( i_opt < 0x80000 )
{
intf_WarnMsg( 1, "ipv4 warning: socket buffer size is 0x%x instead of 0x%x",
i_opt, 0x80000 );
}

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• [SCTP-Discussion] ext_setsockopt and ext_getsockopt problems, Oon Heok Kee, 10/20/2002

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