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"""

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    This C(ython) extension module provides an interface to the libsctp library and associated socket API.

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"""

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from sctp cimport *

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cimport libc

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cimport sock.addr

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def sctp_bindx (int sd, object addrs, int flags) :

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    """

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        Bind the given SOCK_SEQPACKET to the given set of sock.addr.sockaddr's.

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            sd          the system socket FD

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            addresses   the list of qmsk.net.sock.addr.sockaddr's

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            flags       one of SCTP_BINDX_ADD/REM_ADDR

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    """

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    # ensure that addrs stays the same... ?

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    addrs = tuple(addrs)

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    cdef size_t addr_count = len(addrs)

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    cdef size_t addr_size = 0

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    cdef sock.addr.sockaddr addr

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    # whoever decided that sctp_bindx takes an array of mixed sockaddr_in/sockaddr_in6's should be shot

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    for addr in addrs :

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        addr_size += addr._get_sockaddr_len()

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    # alloc buffer to hold all the sockaddr_*'s

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    cdef char *addr_buf = <char *> libc.alloca(addr_size)

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    cdef char *addr_ptr = addr_buf

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    # fill it

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    cdef libc.sockaddr *sa

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    cdef libc.socklen_t sa_len

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    for addr in addrs :

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        # get address's sockaddr info

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        addr._get_sockaddr(&sa, &sa_len)

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        # copy to buffer

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        libc.memcpy(addr_ptr, sa, sa_len)

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        # move to next

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        addr_ptr += sa_len

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    # then call

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    if c_sctp_bindx(sd, <libc.sockaddr *> addr_buf, addr_count, flags) < 0 :

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