The Tor Browser: netwerk/sctp/src/user_recv_thread.c@ca08bd8f51b2 (annotated)

netwerk/sctp/src/user_recv_thread.c@ca08bd8f51b2 (annotated)

netwerk/sctp/src/user_recv_thread.c

Wed, 31 Dec 2014 06:55:46 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:55:46 +0100
changeset 1: ca08bd8f51b2
permissions: -rwxr-xr-x

Added tag TORBROWSER_REPLICA for changeset 6474c204b198

 /*-
  * Copyright (c) 2009-2010 Brad Penoff
  * Copyright (c) 2009-2010 Humaira Kamal
  * Copyright (c) 2011-2012 Irene Ruengeler
  * Copyright (c) 2011-2012 Michael Tuexen
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  */
 #if defined(INET) || defined(INET6)
 #include <sys/types.h>
 #if !defined(__Userspace_os_Windows)
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <unistd.h>
 #include <pthread.h>
 #if !defined(__Userspace_os_DragonFly) && !defined(__Userspace_os_FreeBSD) && !defined(__Userspace_os_NetBSD)
 #include <sys/uio.h>
 #else
 #include <user_ip6_var.h>
 #endif
 #endif
 #include <netinet/sctp_os.h>
 #include <netinet/sctp_var.h>
 #include <netinet/sctp_pcb.h>
 #include <netinet/sctp_input.h>
 #if 0
 #if defined(__Userspace_os_Linux)
 #include <linux/netlink.h>
 #ifdef HAVE_LINUX_IF_ADDR_H
 #include <linux/if_addr.h>
 #endif
 #ifdef HAVE_LINUX_RTNETLINK_H
 #include <linux/rtnetlink.h>
 #endif
 #endif
 #endif
 #if defined(__Userspace_os_Darwin) || defined(__Userspace_os_DragonFly) || defined(__Userspace_os_FreeBSD)
 #include <net/route.h>
 #endif
 /* local macros and datatypes used to get IP addresses system independently */
 #if !defined(IP_PKTINFO ) && ! defined(IP_RECVDSTADDR)
 # error "Can't determine socket option to use to get UDP IP"
 #endif
 void recv_thread_destroy(void);
 #define MAXLEN_MBUF_CHAIN 32 /* What should this value be? */
 #define ROUNDUP(a, size) (((a) & ((size)-1)) ? (1 + ((a) | ((size)-1))) : (a))
 #if defined(__Userspace_os_Darwin) || defined(__Userspace_os_DragonFly) || defined(__Userspace_os_FreeBSD)
 #define NEXT_SA(ap) ap = (struct sockaddr *) \
 	((caddr_t) ap + (ap->sa_len ? ROUNDUP(ap->sa_len, sizeof (uint32_t)) : sizeof(uint32_t)))
 #endif
 #if defined(__Userspace_os_Darwin) || defined(__Userspace_os_DragonFly) || defined(__Userspace_os_FreeBSD)
 static void
 sctp_get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)
 {
 	int i;
 	for (i = 0; i < RTAX_MAX; i++) {
 		if (addrs & (1 << i)) {
 			rti_info[i] = sa;
 			NEXT_SA(sa);
 		} else {
 			rti_info[i] = NULL;
 		}
 	}
 }
 static void
 sctp_handle_ifamsg(unsigned char type, unsigned short index, struct sockaddr *sa)
 {
 	int rc;
 	struct ifaddrs *ifa, *found_ifa = NULL;
 	/* handle only the types we want */
 	if ((type != RTM_NEWADDR) && (type != RTM_DELADDR)) {
 		return;
 	}
 	rc = getifaddrs(&g_interfaces);
 	if (rc != 0) {
 		return;
 	}
 	for (ifa = g_interfaces; ifa; ifa = ifa->ifa_next) {
 		if (index == if_nametoindex(ifa->ifa_name)) {
 			found_ifa = ifa;
 			break;
 		}
 	}
 	if (found_ifa == NULL) {
 		return;
 	}
 	switch (sa->sa_family) {
 #ifdef INET
 	case AF_INET:
 		ifa->ifa_addr = (struct sockaddr *)malloc(sizeof(struct sockaddr_in));
 		memcpy(ifa->ifa_addr, sa, sizeof(struct sockaddr_in));
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 		ifa->ifa_addr = (struct sockaddr *)malloc(sizeof(struct sockaddr_in6));
 		memcpy(ifa->ifa_addr, sa, sizeof(struct sockaddr_in6));
 		break;
 #endif
 	default:
 		SCTPDBG(SCTP_DEBUG_USR, "Address family %d not supported.\n", sa->sa_family);
 	}
 	/* relay the appropriate address change to the base code */
 	if (type == RTM_NEWADDR) {
 		(void)sctp_add_addr_to_vrf(SCTP_DEFAULT_VRFID, ifa, if_nametoindex(ifa->ifa_name),
 ,
 		                           ifa->ifa_name,
 		                           (void *)ifa,
 		                           ifa->ifa_addr,
 ,
 );
 	} else {
 		sctp_del_addr_from_vrf(SCTP_DEFAULT_VRFID, ifa->ifa_addr,
 		                       if_nametoindex(ifa->ifa_name),
 		                       ifa->ifa_name);
 	}
 }
 static void *
 recv_function_route(void *arg)
 {
 	ssize_t ret;
 	struct ifa_msghdr *ifa;
 	char rt_buffer[1024];
 	struct sockaddr *sa, *rti_info[RTAX_MAX];
 	while (1) {
 		bzero(rt_buffer, sizeof(rt_buffer));
 		ret = recv(SCTP_BASE_VAR(userspace_route), rt_buffer, sizeof(rt_buffer), 0);
 		if (ret > 0) {
 			ifa = (struct ifa_msghdr *) rt_buffer;
 			if (ifa->ifam_type != RTM_DELADDR && ifa->ifam_type != RTM_NEWADDR) {
 				continue;
 			}
 			sa = (struct sockaddr *) (ifa + 1);
 			sctp_get_rtaddrs(ifa->ifam_addrs, sa, rti_info);
 			switch (ifa->ifam_type) {
 			case RTM_DELADDR:
 			case RTM_NEWADDR:
 				sctp_handle_ifamsg(ifa->ifam_type, ifa->ifam_index, rti_info[RTAX_IFA]);
 				break;
 			default:
 				/* ignore this routing event */
 				break;
 			}
 		}
 		if (ret < 0) {
 			if (errno == EAGAIN) {
 				continue;
 			} else {
 				break;
 			}
 		}
 	}
 	return (NULL);
 }
 #endif
 #if 0
 /* This does not yet work on Linux */
 static void *
 recv_function_route(void *arg)
 {
 	int len;
 	char buf[4096];
 	struct iovec iov = { buf, sizeof(buf) };
 	struct msghdr msg;
 	struct nlmsghdr *nh;
 	struct ifaddrmsg *rtmsg;
 	struct rtattr *rtatp;
 	struct in_addr *inp;
 	struct sockaddr_nl sanl;
 #ifdef INET
 	struct sockaddr_in *sa;
 #endif
 #ifdef INET6
 	struct sockaddr_in6 *sa6;
 #endif
 	for (;;) {
 		memset(&sanl, 0, sizeof(sanl));
 		sanl.nl_family = AF_NETLINK;
 		sanl.nl_groups = RTMGRP_IPV6_IFADDR | RTMGRP_IPV4_IFADDR;
 		memset(&msg, 0, sizeof(struct msghdr));
 		msg.msg_name = (void *)&sanl;
 		msg.msg_namelen = sizeof(sanl);
 		msg.msg_iov = &iov;
 		msg.msg_iovlen = 1;
 		msg.msg_control = NULL;
 		msg.msg_controllen = 0;
 		len = recvmsg(SCTP_BASE_VAR(userspace_route), &msg, 0);
 		if (len < 0) {
 			if (errno == EAGAIN) {
 				continue;
 			} else {
 				break;
 			}
 		}
 		for (nh = (struct nlmsghdr *) buf; NLMSG_OK (nh, len);
 			nh = NLMSG_NEXT (nh, len)) {
 			if (nh->nlmsg_type == NLMSG_DONE)
 				break;
 			if (nh->nlmsg_type == RTM_NEWADDR || nh->nlmsg_type == RTM_DELADDR) {
 				rtmsg = (struct ifaddrmsg *)NLMSG_DATA(nh);
 				rtatp = (struct rtattr *)IFA_RTA(rtmsg);
 				if(rtatp->rta_type == IFA_ADDRESS) {
 					inp = (struct in_addr *)RTA_DATA(rtatp);
 					switch (rtmsg->ifa_family) {
 #ifdef INET
 					case AF_INET:
 						sa = (struct sockaddr_in *)malloc(sizeof(struct sockaddr_in));
 						sa->sin_family = rtmsg->ifa_family;
 						sa->sin_port = 0;
 						memcpy(&sa->sin_addr, inp, sizeof(struct in_addr));
 						sctp_handle_ifamsg(nh->nlmsg_type, rtmsg->ifa_index, (struct sockaddr *)sa);
 						break;
 #endif
 #ifdef INET6
 					case AF_INET6:
 						sa6 = (struct sockaddr_in6 *)malloc(sizeof(struct sockaddr_in6));
 						sa6->sin6_family = rtmsg->ifa_family;
 						sa6->sin6_port = 0;
 						memcpy(&sa6->sin6_addr, inp, sizeof(struct in6_addr));
 						sctp_handle_ifamsg(nh->nlmsg_type, rtmsg->ifa_index, (struct sockaddr *)sa6);
 						break;
 #endif
 					default:
 						SCTPDBG(SCTP_DEBUG_USR, "Address family %d not supported.\n", rtmsg->ifa_family);
 						break;
 					}
 				}
 			}
 		}
 	}
 	return (NULL);
 }
 #endif
 #ifdef INET
 static void *
 recv_function_raw(void *arg)
 {
 	struct mbuf **recvmbuf;
 	struct ip *iphdr;
 	struct sctphdr *sh;
 	uint16_t port;
 	int offset, ecn = 0;
 #if !defined(SCTP_WITH_NO_CSUM)
 	int compute_crc = 1;
 #endif
 	struct sctp_chunkhdr *ch;
 	struct sockaddr_in src, dst;
 #if !defined(__Userspace_os_Windows)
 	struct msghdr msg;
 	struct iovec recv_iovec[MAXLEN_MBUF_CHAIN];
 #else
 	WSABUF recv_iovec[MAXLEN_MBUF_CHAIN];
 	int nResult, m_ErrorCode;
 	DWORD flags;
 	struct sockaddr_in from;
 	int fromlen;
 #endif
 	/*Initially the entire set of mbufs is to be allocated.
 	  to_fill indicates this amount. */
 	int to_fill = MAXLEN_MBUF_CHAIN;
 	/* iovlen is the size of each mbuf in the chain */
 	int i, n, ncounter = 0;
 	int iovlen = MCLBYTES;
 	int want_ext = (iovlen > MLEN)? 1 : 0;
 	int want_header = 0;
 	bzero((void *)&src, sizeof(struct sockaddr_in));
 	bzero((void *)&dst, sizeof(struct sockaddr_in));
 	recvmbuf = malloc(sizeof(struct mbuf *) * MAXLEN_MBUF_CHAIN);
 	while (1) {
 		for (i = 0; i < to_fill; i++) {
 			/* Not getting the packet header. Tests with chain of one run
 			   as usual without having the packet header.
 			   Have tried both sending and receiving
 			 */
 			recvmbuf[i] = sctp_get_mbuf_for_msg(iovlen, want_header, M_NOWAIT, want_ext, MT_DATA);
 #if !defined(__Userspace_os_Windows)
 			recv_iovec[i].iov_base = (caddr_t)recvmbuf[i]->m_data;
 			recv_iovec[i].iov_len = iovlen;
 #else
 			recv_iovec[i].buf = (caddr_t)recvmbuf[i]->m_data;
 			recv_iovec[i].len = iovlen;
 #endif
 		}
 		to_fill = 0;
 #if defined(__Userspace_os_Windows)
 		flags = 0;
 		ncounter = 0;
 		fromlen = sizeof(struct sockaddr_in);
 		bzero((void *)&from, sizeof(struct sockaddr_in));
 		nResult = WSARecvFrom(SCTP_BASE_VAR(userspace_rawsctp), recv_iovec, MAXLEN_MBUF_CHAIN, (LPDWORD)&ncounter, (LPDWORD)&flags, (struct sockaddr*)&from, &fromlen, NULL, NULL);
 		if (nResult != 0) {
 			m_ErrorCode = WSAGetLastError();
 			if (m_ErrorCode == WSAETIMEDOUT) {
 				continue;
 			}
 			if ((m_ErrorCode == WSAENOTSOCK) || (m_ErrorCode == WSAEINTR)) {
 				break;
 			}
 		}
 		n = ncounter;
 #else
 		bzero((void *)&msg, sizeof(struct msghdr));
 		msg.msg_name = NULL;
 		msg.msg_namelen = 0;
 		msg.msg_iov = recv_iovec;
 		msg.msg_iovlen = MAXLEN_MBUF_CHAIN;
 		msg.msg_control = NULL;
 		msg.msg_controllen = 0;
 		ncounter = n = recvmsg(SCTP_BASE_VAR(userspace_rawsctp), &msg, 0);
 		if (n < 0) {
 			if (errno == EAGAIN) {
 				continue;
 			} else {
 				break;
 			}
 		}
 #endif
 		SCTP_HEADER_LEN(recvmbuf[0]) = n; /* length of total packet */
 		SCTP_STAT_INCR(sctps_recvpackets);
 		SCTP_STAT_INCR_COUNTER64(sctps_inpackets);
 		if (n <= iovlen) {
 			SCTP_BUF_LEN(recvmbuf[0]) = n;
 			(to_fill)++;
 		} else {
 			i = 0;
 			SCTP_BUF_LEN(recvmbuf[0]) = iovlen;
 			ncounter -= iovlen;
 			(to_fill)++;
 			do {
 				recvmbuf[i]->m_next = recvmbuf[i+1];
 				SCTP_BUF_LEN(recvmbuf[i]->m_next) = min(ncounter, iovlen);
 				i++;
 				ncounter -= iovlen;
 				(to_fill)++;
 			} while (ncounter > 0);
 		}
 		iphdr = mtod(recvmbuf[0], struct ip *);
 		sh = (struct sctphdr *)((caddr_t)iphdr + sizeof(struct ip));
 		ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr));
 		offset = sizeof(struct ip) + sizeof(struct sctphdr);
 		if (iphdr->ip_tos != 0) {
 			ecn = iphdr->ip_tos & 0x02;
 		}
 		dst.sin_family = AF_INET;
 #ifdef HAVE_SIN_LEN
 		dst.sin_len = sizeof(struct sockaddr_in);
 #endif
 		dst.sin_addr = iphdr->ip_dst;
 		dst.sin_port = sh->dest_port;
 		src.sin_family = AF_INET;
 #ifdef HAVE_SIN_LEN
 		src.sin_len = sizeof(struct sockaddr_in);
 #endif
 		src.sin_addr = iphdr->ip_src;
 		src.sin_port = sh->src_port;
 		/* SCTP does not allow broadcasts or multicasts */
 		if (IN_MULTICAST(ntohl(dst.sin_addr.s_addr))) {
 			return (NULL);
 		}
 		if (SCTP_IS_IT_BROADCAST(dst.sin_addr, recvmbuf[0])) {
 			return (NULL);
 		}
 		port = 0;
 #if defined(SCTP_WITH_NO_CSUM)
 		SCTP_STAT_INCR(sctps_recvnocrc);
 #else
 		if (src.sin_addr.s_addr == dst.sin_addr.s_addr) {
 			compute_crc = 0;
 			SCTP_STAT_INCR(sctps_recvnocrc);
 		} else {
 			SCTP_STAT_INCR(sctps_recvswcrc);
 		}
 #endif
 		SCTPDBG(SCTP_DEBUG_USR, "%s: Received %d bytes.", __func__, n);
 		SCTPDBG(SCTP_DEBUG_USR, " - calling sctp_common_input_processing with off=%d\n", offset);
 		sctp_common_input_processing(&recvmbuf[0], sizeof(struct ip), offset, n,
 		                             (struct sockaddr *)&src,
 		                             (struct sockaddr *)&dst,
 		                             sh, ch,
 #if !defined(SCTP_WITH_NO_CSUM)
 		                             compute_crc,
 #endif
 		                             ecn,
 		                             SCTP_DEFAULT_VRFID, port);
 		if (recvmbuf[0]) {
 			m_freem(recvmbuf[0]);
 		}
 	}
 	for (i = 0; i < MAXLEN_MBUF_CHAIN; i++) {
 		m_free(recvmbuf[i]);
 	}
 	/* free the array itself */
 	free(recvmbuf);
 	return (NULL);
 }
 #endif
 #if defined(INET6)
 static void *
 recv_function_raw6(void *arg)
 {
 	struct mbuf **recvmbuf6;
 #if !defined(__Userspace_os_Windows)
 	struct iovec recv_iovec[MAXLEN_MBUF_CHAIN];
 	struct msghdr msg;
 	struct cmsghdr *cmsgptr;
 	char cmsgbuf[CMSG_SPACE(sizeof (struct in6_pktinfo))];
 #else
 	WSABUF recv_iovec[MAXLEN_MBUF_CHAIN];
 	int nResult, m_ErrorCode;
 	DWORD flags;
 	struct sockaddr_in6 from;
 	int fromlen;
 	GUID WSARecvMsg_GUID = WSAID_WSARECVMSG;
 	LPFN_WSARECVMSG WSARecvMsg;
 	WSACMSGHDR *cmsgptr;
 	WSAMSG msg;
 	char ControlBuffer[1024];
 #endif
 	struct sockaddr_in6 src, dst;
 	struct sctphdr *sh;
 	int offset;
 	struct sctp_chunkhdr *ch;
 	/*Initially the entire set of mbufs is to be allocated.
 	  to_fill indicates this amount. */
 	int to_fill = MAXLEN_MBUF_CHAIN;
 	/* iovlen is the size of each mbuf in the chain */
 	int i, n, ncounter = 0;
 #if !defined(SCTP_WITH_NO_CSUM)
 	int compute_crc = 1;
 #endif
 	int iovlen = MCLBYTES;
 	int want_ext = (iovlen > MLEN)? 1 : 0;
 	int want_header = 0;
 	recvmbuf6 = malloc(sizeof(struct mbuf *) * MAXLEN_MBUF_CHAIN);
 	for (;;) {
 		for (i = 0; i < to_fill; i++) {
 			/* Not getting the packet header. Tests with chain of one run
 			   as usual without having the packet header.
 			   Have tried both sending and receiving
 			 */
 			recvmbuf6[i] = sctp_get_mbuf_for_msg(iovlen, want_header, M_NOWAIT, want_ext, MT_DATA);
 #if !defined(__Userspace_os_Windows)
 			recv_iovec[i].iov_base = (caddr_t)recvmbuf6[i]->m_data;
 			recv_iovec[i].iov_len = iovlen;
 #else
 			recv_iovec[i].buf = (caddr_t)recvmbuf6[i]->m_data;
 			recv_iovec[i].len = iovlen;
 #endif
 		}
 		to_fill = 0;
 #if defined(__Userspace_os_Windows)
 		flags = 0;
 		ncounter = 0;
 		fromlen = sizeof(struct sockaddr_in6);
 		bzero((void *)&from, sizeof(struct sockaddr_in6));
 		nResult = WSAIoctl(SCTP_BASE_VAR(userspace_rawsctp6), SIO_GET_EXTENSION_FUNCTION_POINTER,
 		                   &WSARecvMsg_GUID, sizeof WSARecvMsg_GUID,
 		                   &WSARecvMsg, sizeof WSARecvMsg,
 		                   &ncounter, NULL, NULL);
 		if (nResult == 0) {
 			msg.name = (void *)&src;
 			msg.namelen = sizeof(struct sockaddr_in6);
 			msg.lpBuffers = recv_iovec;
 			msg.dwBufferCount = MAXLEN_MBUF_CHAIN;
 			msg.Control.len = sizeof ControlBuffer;
 			msg.Control.buf = ControlBuffer;
 			msg.dwFlags = 0;
 			nResult = WSARecvMsg(SCTP_BASE_VAR(userspace_rawsctp6), &msg, &ncounter, NULL, NULL);
 		}
 		if (nResult != 0) {
 			m_ErrorCode = WSAGetLastError();
 			if (m_ErrorCode == WSAETIMEDOUT)
 				continue;
 			if (m_ErrorCode == WSAENOTSOCK || m_ErrorCode == WSAEINTR)
 				break;
 		}
 		n = ncounter;
 #else
 		bzero((void *)&msg, sizeof(struct msghdr));
 		bzero((void *)&src, sizeof(struct sockaddr_in6));
 		bzero((void *)&dst, sizeof(struct sockaddr_in6));
 		bzero((void *)cmsgbuf, CMSG_SPACE(sizeof (struct in6_pktinfo)));
 		msg.msg_name = (void *)&src;
 		msg.msg_namelen = sizeof(struct sockaddr_in6);
 		msg.msg_iov = recv_iovec;
 		msg.msg_iovlen = MAXLEN_MBUF_CHAIN;
 		msg.msg_control = (void *)cmsgbuf;
 		msg.msg_controllen = (socklen_t)CMSG_LEN(sizeof (struct in6_pktinfo));
 		msg.msg_flags = 0;
 		ncounter = n = recvmsg(SCTP_BASE_VAR(userspace_rawsctp6), &msg, 0);
 		if (n < 0) {
 			if (errno == EAGAIN) {
 				continue;
 			} else {
 				break;
 			}
 		}
 #endif
 		SCTP_HEADER_LEN(recvmbuf6[0]) = n; /* length of total packet */
 		SCTP_STAT_INCR(sctps_recvpackets);
 		SCTP_STAT_INCR_COUNTER64(sctps_inpackets);
 		if (n <= iovlen) {
 			SCTP_BUF_LEN(recvmbuf6[0]) = n;
 			(to_fill)++;
 		} else {
 			i = 0;
 			SCTP_BUF_LEN(recvmbuf6[0]) = iovlen;
 			ncounter -= iovlen;
 			(to_fill)++;
 			do {
 				recvmbuf6[i]->m_next = recvmbuf6[i+1];
 				SCTP_BUF_LEN(recvmbuf6[i]->m_next) = min(ncounter, iovlen);
 				i++;
 				ncounter -= iovlen;
 				(to_fill)++;
 			} while (ncounter > 0);
 		}
 		for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL; cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) {
 			if ((cmsgptr->cmsg_level == IPPROTO_IPV6) && (cmsgptr->cmsg_type == IPV6_PKTINFO)) {
 				struct in6_pktinfo * info;
 				info = (struct in6_pktinfo *)CMSG_DATA(cmsgptr);
 				memcpy((void *)&dst.sin6_addr, (const void *) &(info->ipi6_addr), sizeof(struct in6_addr));
 				break;
 			}
 		}
 		sh = mtod(recvmbuf6[0], struct sctphdr *);
 		ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr));
 		offset = sizeof(struct sctphdr);
 		dst.sin6_family = AF_INET6;
 #ifdef HAVE_SIN6_LEN
 		dst.sin6_len = sizeof(struct sockaddr_in6);
 #endif
 		dst.sin6_port = sh->dest_port;
 		src.sin6_family = AF_INET6;
 #ifdef HAVE_SIN6_LEN
 		src.sin6_len = sizeof(struct sockaddr_in6);
 #endif
 		src.sin6_port = sh->src_port;
 #if defined(SCTP_WITH_NO_CSUM)
 		SCTP_STAT_INCR(sctps_recvnocrc);
 #else
 		if (memcmp(&src.sin6_addr, &dst.sin6_addr, sizeof(struct in6_addr)) == 0) {
 			compute_crc = 0;
 			SCTP_STAT_INCR(sctps_recvnocrc);
 		} else {
 			SCTP_STAT_INCR(sctps_recvswcrc);
 		}
 #endif
 		SCTPDBG(SCTP_DEBUG_USR, "%s: Received %d bytes.", __func__, n);
 		SCTPDBG(SCTP_DEBUG_USR, " - calling sctp_common_input_processing with off=%d\n", offset);
 		sctp_common_input_processing(&recvmbuf6[0], 0, offset, n,
 		                             (struct sockaddr *)&src,
 		                             (struct sockaddr *)&dst,
 		                             sh, ch,
 #if !defined(SCTP_WITH_NO_CSUM)
 		                             compute_crc,
 #endif
 ,
 		                             SCTP_DEFAULT_VRFID, 0);
 		if (recvmbuf6[0]) {
 			m_freem(recvmbuf6[0]);
 		}
 	}
 	for (i = 0; i < MAXLEN_MBUF_CHAIN; i++) {
 		m_free(recvmbuf6[i]);
 	}
 	/* free the array itself */
 	free(recvmbuf6);
 	return (NULL);
 }
 #endif
 #ifdef INET
 static void *
 recv_function_udp(void *arg)
 {
 	struct mbuf **udprecvmbuf;
 	/*Initially the entire set of mbufs is to be allocated.
 	  to_fill indicates this amount. */
 	int to_fill = MAXLEN_MBUF_CHAIN;
 	/* iovlen is the size of each mbuf in the chain */
 	int i, n, ncounter, offset;
 	int iovlen = MCLBYTES;
 	int want_ext = (iovlen > MLEN)? 1 : 0;
 	int want_header = 0;
 	struct sctphdr *sh;
 	uint16_t port;
 	struct sctp_chunkhdr *ch;
 	struct sockaddr_in src, dst;
 #if defined(IP_PKTINFO)
 	char cmsgbuf[CMSG_SPACE(sizeof(struct in_pktinfo))];
 #else
 	char cmsgbuf[CMSG_SPACE(sizeof(struct in_addr))];
 #endif
 #if !defined(SCTP_WITH_NO_CSUM)
 	int compute_crc = 1;
 #endif
 #if !defined(__Userspace_os_Windows)
 	struct iovec iov[MAXLEN_MBUF_CHAIN];
 	struct msghdr msg;
 	struct cmsghdr *cmsgptr;
 #else
 	GUID WSARecvMsg_GUID = WSAID_WSARECVMSG;
 	LPFN_WSARECVMSG WSARecvMsg;
 	char ControlBuffer[1024];
 	WSABUF iov[MAXLEN_MBUF_CHAIN];
 	WSAMSG msg;
 	int nResult, m_ErrorCode;
 	WSACMSGHDR *cmsgptr;
 #endif
 	udprecvmbuf = malloc(sizeof(struct mbuf *) * MAXLEN_MBUF_CHAIN);
 	while (1) {
 		for (i = 0; i < to_fill; i++) {
 			/* Not getting the packet header. Tests with chain of one run
 			   as usual without having the packet header.
 			   Have tried both sending and receiving
 			 */
 			udprecvmbuf[i] = sctp_get_mbuf_for_msg(iovlen, want_header, M_NOWAIT, want_ext, MT_DATA);
 #if !defined(__Userspace_os_Windows)
 			iov[i].iov_base = (caddr_t)udprecvmbuf[i]->m_data;
 			iov[i].iov_len = iovlen;
 #else
 			iov[i].buf = (caddr_t)udprecvmbuf[i]->m_data;
 			iov[i].len = iovlen;
 #endif
 		}
 		to_fill = 0;
 #if !defined(__Userspace_os_Windows)
 		bzero((void *)&msg, sizeof(struct msghdr));
 #else
 		bzero((void *)&msg, sizeof(WSAMSG));
 #endif
 		bzero((void *)&src, sizeof(struct sockaddr_in));
 		bzero((void *)&dst, sizeof(struct sockaddr_in));
 		bzero((void *)cmsgbuf, sizeof(cmsgbuf));
 #if !defined(__Userspace_os_Windows)
 		msg.msg_name = (void *)&src;
 		msg.msg_namelen = sizeof(struct sockaddr_in);
 		msg.msg_iov = iov;
 		msg.msg_iovlen = MAXLEN_MBUF_CHAIN;
 		msg.msg_control = (void *)cmsgbuf;
 		msg.msg_controllen = sizeof(cmsgbuf);
 		msg.msg_flags = 0;
 		ncounter = n = recvmsg(SCTP_BASE_VAR(userspace_udpsctp), &msg, 0);
 		if (n < 0) {
 			if (errno == EAGAIN) {
 				continue;
 			} else {
 				break;
 			}
 		}
 #else
 		nResult = WSAIoctl(SCTP_BASE_VAR(userspace_udpsctp), SIO_GET_EXTENSION_FUNCTION_POINTER,
 		 &WSARecvMsg_GUID, sizeof WSARecvMsg_GUID,
 		 &WSARecvMsg, sizeof WSARecvMsg,
 		 &ncounter, NULL, NULL);
 		if (nResult == 0) {
 			msg.name = (void *)&src;
 			msg.namelen = sizeof(struct sockaddr_in);
 			msg.lpBuffers = iov;
 			msg.dwBufferCount = MAXLEN_MBUF_CHAIN;
 			msg.Control.len = sizeof ControlBuffer;
 			msg.Control.buf = ControlBuffer;
 			msg.dwFlags = 0;
 			nResult = WSARecvMsg(SCTP_BASE_VAR(userspace_udpsctp), &msg, &ncounter, NULL, NULL);
 		}
 		if (nResult != 0) {
 			m_ErrorCode = WSAGetLastError();
 			if (m_ErrorCode == WSAETIMEDOUT) {
 				continue;
 			}
 			if ((m_ErrorCode == WSAENOTSOCK) || (m_ErrorCode == WSAEINTR)) {
 				break;
 			}
 		}
 		n = ncounter;
 #endif
 		SCTP_HEADER_LEN(udprecvmbuf[0]) = n; /* length of total packet */
 		SCTP_STAT_INCR(sctps_recvpackets);
 		SCTP_STAT_INCR_COUNTER64(sctps_inpackets);
 		if (n <= iovlen) {
 			SCTP_BUF_LEN(udprecvmbuf[0]) = n;
 			(to_fill)++;
 		} else {
 			i = 0;
 			SCTP_BUF_LEN(udprecvmbuf[0]) = iovlen;
 			ncounter -= iovlen;
 			(to_fill)++;
 			do {
 				udprecvmbuf[i]->m_next = udprecvmbuf[i+1];
 				SCTP_BUF_LEN(udprecvmbuf[i]->m_next) = min(ncounter, iovlen);
 				i++;
 				ncounter -= iovlen;
 				(to_fill)++;
 			} while (ncounter > 0);
 		}
 		for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL; cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) {
 #if defined(IP_PKTINFO)
 			if ((cmsgptr->cmsg_level == IPPROTO_IP) && (cmsgptr->cmsg_type == IP_PKTINFO)) {
 				struct in_pktinfo *info;
 				dst.sin_family = AF_INET;
 #ifdef HAVE_SIN_LEN
 				dst.sin_len = sizeof(struct sockaddr_in);
 #endif
 				info = (struct in_pktinfo *)CMSG_DATA(cmsgptr);
 				memcpy((void *)&dst.sin_addr, (const void *)&(info->ipi_addr), sizeof(struct in_addr));
 				break;
 			}
 #else
 			if ((cmsgptr->cmsg_level == IPPROTO_IP) && (cmsgptr->cmsg_type == IP_RECVDSTADDR)) {
 				struct in_addr *addr;
 				dst.sin_family = AF_INET;
 #ifdef HAVE_SIN_LEN
 				dst.sin_len = sizeof(struct sockaddr_in);
 #endif
 				addr = (struct in_addr *)CMSG_DATA(cmsgptr);
 				memcpy((void *)&dst.sin_addr, (const void *)addr, sizeof(struct in_addr));
 				break;
 			}
 #endif
 		}
 		/* SCTP does not allow broadcasts or multicasts */
 		if (IN_MULTICAST(ntohl(dst.sin_addr.s_addr))) {
 			return (NULL);
 		}
 		if (SCTP_IS_IT_BROADCAST(dst.sin_addr, udprecvmbuf[0])) {
 			return (NULL);
 		}
 		/*offset = sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr);*/
 		sh = mtod(udprecvmbuf[0], struct sctphdr *);
 		ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr));
 		offset = sizeof(struct sctphdr);
 		port = src.sin_port;
 		src.sin_port = sh->src_port;
 		dst.sin_port = sh->dest_port;
 #if defined(SCTP_WITH_NO_CSUM)
 		SCTP_STAT_INCR(sctps_recvnocrc);
 #else
 		if (src.sin_addr.s_addr == dst.sin_addr.s_addr) {
 			compute_crc = 0;
 			SCTP_STAT_INCR(sctps_recvnocrc);
 		} else {
 			SCTP_STAT_INCR(sctps_recvswcrc);
 		}
 #endif
 		SCTPDBG(SCTP_DEBUG_USR, "%s: Received %d bytes.", __func__, n);
 		SCTPDBG(SCTP_DEBUG_USR, " - calling sctp_common_input_processing with off=%d\n", offset);
 		sctp_common_input_processing(&udprecvmbuf[0], 0, offset, n,
 		                             (struct sockaddr *)&src,
 		                             (struct sockaddr *)&dst,
 		                             sh, ch,
 #if !defined(SCTP_WITH_NO_CSUM)
 		                             compute_crc,
 #endif
 ,
 		                             SCTP_DEFAULT_VRFID, port);
 		if (udprecvmbuf[0]) {
 			m_freem(udprecvmbuf[0]);
 		}
 	}
 	for (i = 0; i < MAXLEN_MBUF_CHAIN; i++) {
 		m_free(udprecvmbuf[i]);
 	}
 	/* free the array itself */
 	free(udprecvmbuf);
 	return (NULL);
 }
 #endif
 #if defined(INET6)
 static void *
 recv_function_udp6(void *arg)
 {
 	struct mbuf **udprecvmbuf6;
 	/*Initially the entire set of mbufs is to be allocated.
 	  to_fill indicates this amount. */
 	int to_fill = MAXLEN_MBUF_CHAIN;
 	/* iovlen is the size of each mbuf in the chain */
 	int i, n, ncounter, offset;
 	int iovlen = MCLBYTES;
 	int want_ext = (iovlen > MLEN)? 1 : 0;
 	int want_header = 0;
 	struct sockaddr_in6 src, dst;
 	struct sctphdr *sh;
 	uint16_t port;
 	struct sctp_chunkhdr *ch;
 	char cmsgbuf[CMSG_SPACE(sizeof (struct in6_pktinfo))];
 #if !defined(SCTP_WITH_NO_CSUM)
 	int compute_crc = 1;
 #endif
 #if !defined(__Userspace_os_Windows)
 	struct iovec iov[MAXLEN_MBUF_CHAIN];
 	struct msghdr msg;
 	struct cmsghdr *cmsgptr;
 #else
 	GUID WSARecvMsg_GUID = WSAID_WSARECVMSG;
 	LPFN_WSARECVMSG WSARecvMsg;
 	char ControlBuffer[1024];
 	WSABUF iov[MAXLEN_MBUF_CHAIN];
 	WSAMSG msg;
 	int nResult, m_ErrorCode;
 	WSACMSGHDR *cmsgptr;
 #endif
 	udprecvmbuf6 = malloc(sizeof(struct mbuf *) * MAXLEN_MBUF_CHAIN);
 	while (1) {
 		for (i = 0; i < to_fill; i++) {
 			/* Not getting the packet header. Tests with chain of one run
 			   as usual without having the packet header.
 			   Have tried both sending and receiving
 			 */
 			udprecvmbuf6[i] = sctp_get_mbuf_for_msg(iovlen, want_header, M_NOWAIT, want_ext, MT_DATA);
 #if !defined(__Userspace_os_Windows)
 			iov[i].iov_base = (caddr_t)udprecvmbuf6[i]->m_data;
 			iov[i].iov_len = iovlen;
 #else
 			iov[i].buf = (caddr_t)udprecvmbuf6[i]->m_data;
 			iov[i].len = iovlen;
 #endif
 		}
 		to_fill = 0;
 #if !defined(__Userspace_os_Windows)
 		bzero((void *)&msg, sizeof(struct msghdr));
 #else
 		bzero((void *)&msg, sizeof(WSAMSG));
 #endif
 		bzero((void *)&src, sizeof(struct sockaddr_in6));
 		bzero((void *)&dst, sizeof(struct sockaddr_in6));
 		bzero((void *)cmsgbuf, CMSG_SPACE(sizeof (struct in6_pktinfo)));
 #if !defined(__Userspace_os_Windows)
 		msg.msg_name = (void *)&src;
 		msg.msg_namelen = sizeof(struct sockaddr_in6);
 		msg.msg_iov = iov;
 		msg.msg_iovlen = MAXLEN_MBUF_CHAIN;
 		msg.msg_control = (void *)cmsgbuf;
 		msg.msg_controllen = (socklen_t)CMSG_LEN(sizeof (struct in6_pktinfo));
 		msg.msg_flags = 0;
 		ncounter = n = recvmsg(SCTP_BASE_VAR(userspace_udpsctp6), &msg, 0);
 		if (n < 0) {
 			if (errno == EAGAIN) {
 				continue;
 			} else {
 				break;
 			}
 		}
 #else
 		nResult = WSAIoctl(SCTP_BASE_VAR(userspace_udpsctp6), SIO_GET_EXTENSION_FUNCTION_POINTER,
 		                   &WSARecvMsg_GUID, sizeof WSARecvMsg_GUID,
 		                   &WSARecvMsg, sizeof WSARecvMsg,
 		                   &ncounter, NULL, NULL);
 		if (nResult == SOCKET_ERROR) {
 			m_ErrorCode = WSAGetLastError();
 			WSARecvMsg = NULL;
 		}
 		if (nResult == 0) {
 			msg.name = (void *)&src;
 			msg.namelen = sizeof(struct sockaddr_in6);
 			msg.lpBuffers = iov;
 			msg.dwBufferCount = MAXLEN_MBUF_CHAIN;
 			msg.Control.len = sizeof ControlBuffer;
 			msg.Control.buf = ControlBuffer;
 			msg.dwFlags = 0;
 			nResult = WSARecvMsg(SCTP_BASE_VAR(userspace_udpsctp6), &msg, &ncounter, NULL, NULL);
 		}
 		if (nResult != 0) {
 			m_ErrorCode = WSAGetLastError();
 			if (m_ErrorCode == WSAETIMEDOUT) {
 				continue;
 			}
 			if ((m_ErrorCode == WSAENOTSOCK) || (m_ErrorCode == WSAEINTR)) {
 				break;
 			}
 		}
 		n = ncounter;
 #endif
 		SCTP_HEADER_LEN(udprecvmbuf6[0]) = n; /* length of total packet */
 		SCTP_STAT_INCR(sctps_recvpackets);
 		SCTP_STAT_INCR_COUNTER64(sctps_inpackets);
 		if (n <= iovlen) {
 			SCTP_BUF_LEN(udprecvmbuf6[0]) = n;
 			(to_fill)++;
 		} else {
 			i = 0;
 			SCTP_BUF_LEN(udprecvmbuf6[0]) = iovlen;
 			ncounter -= iovlen;
 			(to_fill)++;
 			do {
 				udprecvmbuf6[i]->m_next = udprecvmbuf6[i+1];
 				SCTP_BUF_LEN(udprecvmbuf6[i]->m_next) = min(ncounter, iovlen);
 				i++;
 				ncounter -= iovlen;
 				(to_fill)++;
 			} while (ncounter > 0);
 		}
 		for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL; cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) {
 			if ((cmsgptr->cmsg_level == IPPROTO_IPV6) && (cmsgptr->cmsg_type == IPV6_PKTINFO)) {
 				struct in6_pktinfo *info;
 				dst.sin6_family = AF_INET6;
 #ifdef HAVE_SIN6_LEN
 				dst.sin6_len = sizeof(struct sockaddr_in6);
 #endif
 				info = (struct in6_pktinfo *)CMSG_DATA(cmsgptr);
 				/*dst.sin6_port = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port));*/
 				memcpy((void *)&dst.sin6_addr, (const void *)&(info->ipi6_addr), sizeof(struct in6_addr));
 			}
 		}
 		/* SCTP does not allow broadcasts or multicasts */
 		if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr)) {
 			return (NULL);
 		}
 		sh = mtod(udprecvmbuf6[0], struct sctphdr *);
 		ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr));
 		offset = sizeof(struct sctphdr);
 		port = src.sin6_port;
 		src.sin6_port = sh->src_port;
 		dst.sin6_port = sh->dest_port;
 #if defined(SCTP_WITH_NO_CSUM)
 		SCTP_STAT_INCR(sctps_recvnocrc);
 #else
 		if ((memcmp(&src.sin6_addr, &dst.sin6_addr, sizeof(struct in6_addr)) == 0)) {
 			compute_crc = 0;
 			SCTP_STAT_INCR(sctps_recvnocrc);
 		} else {
 			SCTP_STAT_INCR(sctps_recvswcrc);
 		}
 #endif
 		SCTPDBG(SCTP_DEBUG_USR, "%s: Received %d bytes.", __func__, n);
 		SCTPDBG(SCTP_DEBUG_USR, " - calling sctp_common_input_processing with off=%d\n", (int)sizeof(struct sctphdr));
 		sctp_common_input_processing(&udprecvmbuf6[0], 0, offset, n,
 		                             (struct sockaddr *)&src,
 		                             (struct sockaddr *)&dst,
 		                             sh, ch,
 #if !defined(SCTP_WITH_NO_CSUM)
 		                             compute_crc,
 #endif
 ,
 		                             SCTP_DEFAULT_VRFID, port);
 		if (udprecvmbuf6[0]) {
 			m_freem(udprecvmbuf6[0]);
 		}
 	}
 	for (i = 0; i < MAXLEN_MBUF_CHAIN; i++) {
 		m_free(udprecvmbuf6[i]);
 	}
 	/* free the array itself */
 	free(udprecvmbuf6);
 	return (NULL);
 }
 #endif
 static void
 setReceiveBufferSize(int sfd, int new_size)
 {
 	int ch = new_size;
 	if (setsockopt (sfd, SOL_SOCKET, SO_RCVBUF, (void*)&ch, sizeof(ch)) < 0) {
 #if defined (__Userspace_os_Windows)
 		SCTPDBG(SCTP_DEBUG_USR, "Can't set recv-buffers size (errno = %d).\n", WSAGetLastError());
 #else
 		SCTPDBG(SCTP_DEBUG_USR, "Can't set recv-buffers size (errno = %d).\n", errno);
 #endif
 	}
 	return;
 }
 static void
 setSendBufferSize(int sfd, int new_size)
 {
 	int ch = new_size;
 	if (setsockopt (sfd, SOL_SOCKET, SO_SNDBUF, (void*)&ch, sizeof(ch)) < 0) {
 #if defined (__Userspace_os_Windows)
 		SCTPDBG(SCTP_DEBUG_USR, "Can't set send-buffers size (errno = %d).\n", WSAGetLastError());
 #else
 		SCTPDBG(SCTP_DEBUG_USR, "Can't set send-buffers size (errno = %d).\n", errno);
 #endif
 	}
 	return;
 }
 #define SOCKET_TIMEOUT 100 /* in ms */
 void
 recv_thread_init(void)
 {
 #if defined(INET)
 	struct sockaddr_in addr_ipv4;
 	const int hdrincl = 1;
 #endif
 #if defined(INET6)
 	struct sockaddr_in6 addr_ipv6;
 #endif
 #if defined(INET) || defined(INET6)
 	const int on = 1;
 #endif
 #if !defined(__Userspace_os_Windows)
 	struct timeval timeout;
 	timeout.tv_sec  = (SOCKET_TIMEOUT / 1000);
 	timeout.tv_usec = (SOCKET_TIMEOUT % 1000) * 1000;
 #else
 	unsigned int timeout = SOCKET_TIMEOUT; /* Timeout in milliseconds */
 #endif
 #if defined(__Userspace_os_Darwin) || defined(__Userspace_os_DragonFly) || defined(__Userspace_os_FreeBSD)
 	if (SCTP_BASE_VAR(userspace_route) == -1) {
 		if ((SCTP_BASE_VAR(userspace_route) = socket(AF_ROUTE, SOCK_RAW, 0)) < 0) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't create routing socket (errno = %d).\n", errno);
 		}
 #if 0
 		struct sockaddr_nl sanl;
 		if ((SCTP_BASE_VAR(userspace_route) = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)) < 0) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't create routing socket (errno = %d.\n", errno);
 		}
 		memset(&sanl, 0, sizeof(sanl));
 		sanl.nl_family = AF_NETLINK;
 		sanl.nl_groups = 0;
 #ifdef INET
 		sanl.nl_groups |= RTMGRP_IPV4_IFADDR;
 #endif
 #ifdef INET6
 		sanl.nl_groups |= RTMGRP_IPV6_IFADDR;
 #endif
 		if (bind(SCTP_BASE_VAR(userspace_route), (struct sockaddr *) &sanl, sizeof(sanl)) < 0) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't bind routing socket (errno = %d).\n", errno);
 			close(SCTP_BASE_VAR(userspace_route));
 			SCTP_BASE_VAR(userspace_route) = -1;
 		}
 #endif
 		if (SCTP_BASE_VAR(userspace_route) != -1) {
 			if (setsockopt(SCTP_BASE_VAR(userspace_route), SOL_SOCKET, SO_RCVTIMEO,(const void*)&timeout, sizeof(struct timeval)) < 0) {
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set timeout on routing socket (errno = %d).\n", errno);
 #if defined(__Userspace_os_Windows)
 				closesocket(SCTP_BASE_VAR(userspace_route));
 #else
 				close(SCTP_BASE_VAR(userspace_route));
 #endif
 				SCTP_BASE_VAR(userspace_route) = -1;
 			}
 		}
 	}
 #endif
 #if defined(INET)
 	if (SCTP_BASE_VAR(userspace_rawsctp) == -1) {
 		if ((SCTP_BASE_VAR(userspace_rawsctp) = socket(AF_INET, SOCK_RAW, IPPROTO_SCTP)) < 0) {
 #if defined(__Userspace_os_Windows)
 			SCTPDBG(SCTP_DEBUG_USR, "Can't create raw socket for IPv4 (errno = %d).\n", WSAGetLastError());
 #else
 			SCTPDBG(SCTP_DEBUG_USR, "Can't create raw socket for IPv4 (errno = %d).\n", errno);
 #endif
 		} else {
 			/* complete setting up the raw SCTP socket */
 			if (setsockopt(SCTP_BASE_VAR(userspace_rawsctp), IPPROTO_IP, IP_HDRINCL,(const void*)&hdrincl, sizeof(int)) < 0) {
 #if defined(__Userspace_os_Windows)
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IP_HDRINCL (errno = %d).\n", WSAGetLastError());
 				closesocket(SCTP_BASE_VAR(userspace_rawsctp));
 #else
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IP_HDRINCL (errno = %d).\n", errno);
 				close(SCTP_BASE_VAR(userspace_rawsctp));
 #endif
 				SCTP_BASE_VAR(userspace_rawsctp) = -1;
 			} else if (setsockopt(SCTP_BASE_VAR(userspace_rawsctp), SOL_SOCKET, SO_RCVTIMEO, (const void *)&timeout, sizeof(timeout)) < 0) {
 #if defined(__Userspace_os_Windows)
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set timeout on socket for SCTP/IPv4 (errno = %d).\n", WSAGetLastError());
 				closesocket(SCTP_BASE_VAR(userspace_rawsctp));
 #else
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set timeout on socket for SCTP/IPv4 (errno = %d).\n", errno);
 				close(SCTP_BASE_VAR(userspace_rawsctp));
 #endif
 				SCTP_BASE_VAR(userspace_rawsctp) = -1;
 			} else {
 				memset((void *)&addr_ipv4, 0, sizeof(struct sockaddr_in));
 #ifdef HAVE_SIN_LEN
 				addr_ipv4.sin_len         = sizeof(struct sockaddr_in);
 #endif
 				addr_ipv4.sin_family      = AF_INET;
 				addr_ipv4.sin_port        = htons(0);
 				addr_ipv4.sin_addr.s_addr = htonl(INADDR_ANY);
 				if (bind(SCTP_BASE_VAR(userspace_rawsctp), (const struct sockaddr *)&addr_ipv4, sizeof(struct sockaddr_in)) < 0) {
 #if defined(__Userspace_os_Windows)
 					SCTPDBG(SCTP_DEBUG_USR, "Can't bind socket for SCTP/IPv4 (errno = %d).\n", WSAGetLastError());
 					closesocket(SCTP_BASE_VAR(userspace_rawsctp));
 #else
 					SCTPDBG(SCTP_DEBUG_USR, "Can't bind socket for SCTP/IPv4 (errno = %d).\n", errno);
 					close(SCTP_BASE_VAR(userspace_rawsctp));
 #endif
 					SCTP_BASE_VAR(userspace_rawsctp) = -1;
 				} else {
 					setReceiveBufferSize(SCTP_BASE_VAR(userspace_rawsctp), SB_RAW); /* 128K */
 					setSendBufferSize(SCTP_BASE_VAR(userspace_rawsctp), SB_RAW); /* 128K Is this setting net.inet.raw.maxdgram value? Should it be set to 64K? */
 				}
 			}
 		}
 	}
 	if (SCTP_BASE_VAR(userspace_udpsctp) == -1) {
 		if ((SCTP_BASE_VAR(userspace_udpsctp) = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
 #if defined(__Userspace_os_Windows)
 			SCTPDBG(SCTP_DEBUG_USR, "Can't create socket for SCTP/UDP/IPv4 (errno = %d).\n", WSAGetLastError());
 #else
 			SCTPDBG(SCTP_DEBUG_USR, "Can't create socket for SCTP/UDP/IPv4 (errno = %d).\n", errno);
 #endif
 		} else {
 #if defined(IP_PKTINFO)
 			if (setsockopt(SCTP_BASE_VAR(userspace_udpsctp), IPPROTO_IP, IP_PKTINFO, (const void *)&on, (int)sizeof(int)) < 0) {
 #else
 			if (setsockopt(SCTP_BASE_VAR(userspace_udpsctp), IPPROTO_IP, IP_RECVDSTADDR, (const void *)&on, (int)sizeof(int)) < 0) {
 #endif
 #if defined(__Userspace_os_Windows)
 #if defined(IP_PKTINFO)
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IP_PKTINFO on socket for SCTP/UDP/IPv4 (errno = %d).\n", WSAGetLastError());
 #else
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IP_RECVDSTADDR on socket for SCTP/UDP/IPv4 (errno = %d).\n", WSAGetLastError());
 #endif
 				closesocket(SCTP_BASE_VAR(userspace_udpsctp));
 #else
 #if defined(IP_PKTINFO)
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IP_PKTINFO on socket for SCTP/UDP/IPv4 (errno = %d).\n", errno);
 #else
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IP_RECVDSTADDR on socket for SCTP/UDP/IPv4 (errno = %d).\n", errno);
 #endif
 				close(SCTP_BASE_VAR(userspace_udpsctp));
 #endif
 				SCTP_BASE_VAR(userspace_udpsctp) = -1;
 			} else if (setsockopt(SCTP_BASE_VAR(userspace_udpsctp), SOL_SOCKET, SO_RCVTIMEO, (const void *)&timeout, sizeof(timeout)) < 0) {
 #if defined(__Userspace_os_Windows)
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set timeout on socket for SCTP/UDP/IPv4 (errno = %d).\n", WSAGetLastError());
 				closesocket(SCTP_BASE_VAR(userspace_udpsctp));
 #else
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set timeout on socket for SCTP/UDP/IPv4 (errno = %d).\n", errno);
 				close(SCTP_BASE_VAR(userspace_udpsctp));
 #endif
 				SCTP_BASE_VAR(userspace_udpsctp) = -1;
 			} else {
 				memset((void *)&addr_ipv4, 0, sizeof(struct sockaddr_in));
 #ifdef HAVE_SIN_LEN
 				addr_ipv4.sin_len         = sizeof(struct sockaddr_in);
 #endif
 				addr_ipv4.sin_family      = AF_INET;
 				addr_ipv4.sin_port        = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port));
 				addr_ipv4.sin_addr.s_addr = htonl(INADDR_ANY);
 				if (bind(SCTP_BASE_VAR(userspace_udpsctp), (const struct sockaddr *)&addr_ipv4, sizeof(struct sockaddr_in)) < 0) {
 #if defined(__Userspace_os_Windows)
 					SCTPDBG(SCTP_DEBUG_USR, "Can't bind socket for SCTP/UDP/IPv4 (errno = %d).\n", WSAGetLastError());
 					closesocket(SCTP_BASE_VAR(userspace_udpsctp));
 #else
 					SCTPDBG(SCTP_DEBUG_USR, "Can't bind socket for SCTP/UDP/IPv4 (errno = %d).\n", errno);
 					close(SCTP_BASE_VAR(userspace_udpsctp));
 #endif
 					SCTP_BASE_VAR(userspace_udpsctp) = -1;
 				} else {
 					setReceiveBufferSize(SCTP_BASE_VAR(userspace_udpsctp), SB_RAW); /* 128K */
 					setSendBufferSize(SCTP_BASE_VAR(userspace_udpsctp), SB_RAW); /* 128K Is this setting net.inet.raw.maxdgram value? Should it be set to 64K? */
 				}
 			}
 		}
 	}
 #endif
 #if defined(INET6)
 	if (SCTP_BASE_VAR(userspace_rawsctp6) == -1) {
 		if ((SCTP_BASE_VAR(userspace_rawsctp6) = socket(AF_INET6, SOCK_RAW, IPPROTO_SCTP)) < 0) {
 #if defined(__Userspace_os_Windows)
 			SCTPDBG(SCTP_DEBUG_USR, "Can't create socket for SCTP/IPv6 (errno = %d).\n", WSAGetLastError());
 #else
 			SCTPDBG(SCTP_DEBUG_USR, "Can't create socket for SCTP/IPv6 (errno = %d).\n", errno);
 #endif
 		} else {
 			/* complete setting up the raw SCTP socket */
 #if defined(IPV6_RECVPKTINFO)
 			if (setsockopt(SCTP_BASE_VAR(userspace_rawsctp6), IPPROTO_IPV6, IPV6_RECVPKTINFO, (const void *)&on, sizeof(on)) < 0) {
 #if defined(__Userspace_os_Windows)
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_RECVPKTINFO on socket for SCTP/IPv6 (errno = %d).\n", WSAGetLastError());
 				closesocket(SCTP_BASE_VAR(userspace_rawsctp6));
 #else
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_RECVPKTINFO on socket for SCTP/IPv6 (errno = %d).\n", errno);
 				close(SCTP_BASE_VAR(userspace_rawsctp6));
 #endif
 				SCTP_BASE_VAR(userspace_rawsctp6) = -1;
 			} else {
 #else
 			if (setsockopt(SCTP_BASE_VAR(userspace_rawsctp6), IPPROTO_IPV6, IPV6_PKTINFO,(const void*)&on, sizeof(on)) < 0) {
 #if defined(__Userspace_os_Windows)
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_PKTINFO on socket for SCTP/IPv6 (errno = %d).\n", WSAGetLastError());
 				closesocket(SCTP_BASE_VAR(userspace_rawsctp6));
 #else
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_PKTINFO on socket for SCTP/IPv6 (errno = %d).\n", errno);
 				close(SCTP_BASE_VAR(userspace_rawsctp6));
 #endif
 				SCTP_BASE_VAR(userspace_rawsctp6) = -1;
 			} else {
 #endif
 				if (setsockopt(SCTP_BASE_VAR(userspace_rawsctp6), IPPROTO_IPV6, IPV6_V6ONLY, (const void*)&on, (socklen_t)sizeof(on)) < 0) {
 #if defined(__Userspace_os_Windows)
 					SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_V6ONLY on socket for SCTP/IPv6 (errno = %d).\n", WSAGetLastError());
 #else
 					SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_V6ONLY on socket for SCTP/IPv6 (errno = %d).\n", errno);
 #endif
 				}
 				if (setsockopt(SCTP_BASE_VAR(userspace_rawsctp6), SOL_SOCKET, SO_RCVTIMEO, (const void *)&timeout, sizeof(timeout)) < 0) {
 #if defined(__Userspace_os_Windows)
 					SCTPDBG(SCTP_DEBUG_USR, "Can't set timeout on socket for SCTP/IPv6 (errno = %d).\n", WSAGetLastError());
 					closesocket(SCTP_BASE_VAR(userspace_rawsctp6));
 #else
 					SCTPDBG(SCTP_DEBUG_USR, "Can't set timeout on socket for SCTP/IPv6 (errno = %d).\n", errno);
 					close(SCTP_BASE_VAR(userspace_rawsctp6));
 #endif
 					SCTP_BASE_VAR(userspace_rawsctp6) = -1;
 				} else {
 					memset((void *)&addr_ipv6, 0, sizeof(struct sockaddr_in6));
 #ifdef HAVE_SIN6_LEN
 					addr_ipv6.sin6_len         = sizeof(struct sockaddr_in6);
 #endif
 					addr_ipv6.sin6_family      = AF_INET6;
 					addr_ipv6.sin6_port        = htons(0);
 					addr_ipv6.sin6_addr        = in6addr_any;
 					if (bind(SCTP_BASE_VAR(userspace_rawsctp6), (const struct sockaddr *)&addr_ipv6, sizeof(struct sockaddr_in6)) < 0) {
 #if defined(__Userspace_os_Windows)
 						SCTPDBG(SCTP_DEBUG_USR, "Can't bind socket for SCTP/IPv6 (errno = %d).\n", WSAGetLastError());
 						closesocket(SCTP_BASE_VAR(userspace_rawsctp6));
 #else
 						SCTPDBG(SCTP_DEBUG_USR, "Can't bind socket for SCTP/IPv6 (errno = %d).\n", errno);
 						close(SCTP_BASE_VAR(userspace_rawsctp6));
 #endif
 						SCTP_BASE_VAR(userspace_rawsctp6) = -1;
 					} else {
 						setReceiveBufferSize(SCTP_BASE_VAR(userspace_rawsctp6), SB_RAW); /* 128K */
 						setSendBufferSize(SCTP_BASE_VAR(userspace_rawsctp6), SB_RAW); /* 128K Is this setting net.inet.raw.maxdgram value? Should it be set to 64K? */
 					}
 				}
 			}
 		}
 	}
 	if (SCTP_BASE_VAR(userspace_udpsctp6) == -1) {
 		if ((SCTP_BASE_VAR(userspace_udpsctp6) = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
 #if defined(__Userspace_os_Windows)
 			SCTPDBG(SCTP_DEBUG_USR, "Can't create socket for SCTP/UDP/IPv6 (errno = %d).\n", WSAGetLastError());
 #else
 			SCTPDBG(SCTP_DEBUG_USR, "Can't create socket for SCTP/UDP/IPv6 (errno = %d).\n", errno);
 #endif
 		}
 #if defined(IPV6_RECVPKTINFO)
 		if (setsockopt(SCTP_BASE_VAR(userspace_udpsctp6), IPPROTO_IPV6, IPV6_RECVPKTINFO, (const void *)&on, (int)sizeof(int)) < 0) {
 #if defined(__Userspace_os_Windows)
 			SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_RECVPKTINFO on socket for SCTP/UDP/IPv6 (errno = %d).\n", WSAGetLastError());
 			closesocket(SCTP_BASE_VAR(userspace_udpsctp6));
 #else
 			SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_RECVPKTINFO on socket for SCTP/UDP/IPv6 (errno = %d).\n", errno);
 			close(SCTP_BASE_VAR(userspace_udpsctp6));
 #endif
 			SCTP_BASE_VAR(userspace_udpsctp6) = -1;
 		} else {
 #else
 		if (setsockopt(SCTP_BASE_VAR(userspace_udpsctp6), IPPROTO_IPV6, IPV6_PKTINFO, (const void *)&on, (int)sizeof(int)) < 0) {
 #if defined(__Userspace_os_Windows)
 			SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_PKTINFO on socket for SCTP/UDP/IPv6 (errno = %d).\n", WSAGetLastError());
 			closesocket(SCTP_BASE_VAR(userspace_udpsctp6));
 #else
 			SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_PKTINFO on socket for SCTP/UDP/IPv6 (errno = %d).\n", errno);
 			close(SCTP_BASE_VAR(userspace_udpsctp6));
 #endif
 			SCTP_BASE_VAR(userspace_udpsctp6) = -1;
 		} else {
 #endif
 			if (setsockopt(SCTP_BASE_VAR(userspace_udpsctp6), IPPROTO_IPV6, IPV6_V6ONLY, (const void *)&on, (socklen_t)sizeof(on)) < 0) {
 #if defined(__Userspace_os_Windows)
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_V6ONLY on socket for SCTP/UDP/IPv6 (errno = %d).\n", WSAGetLastError());
 #else
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set IPV6_V6ONLY on socket for SCTP/UDP/IPv6 (errno = %d).\n", errno);
 #endif
 			}
 			if (setsockopt(SCTP_BASE_VAR(userspace_udpsctp6), SOL_SOCKET, SO_RCVTIMEO, (const void *)&timeout, sizeof(timeout)) < 0) {
 #if defined(__Userspace_os_Windows)
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set timeout on socket for SCTP/UDP/IPv6 (errno = %d).\n", WSAGetLastError());
 				closesocket(SCTP_BASE_VAR(userspace_udpsctp6));
 #else
 				SCTPDBG(SCTP_DEBUG_USR, "Can't set timeout on socket for SCTP/UDP/IPv6 (errno = %d).\n", errno);
 				close(SCTP_BASE_VAR(userspace_udpsctp6));
 #endif
 				SCTP_BASE_VAR(userspace_udpsctp6) = -1;
 			} else {
 				memset((void *)&addr_ipv6, 0, sizeof(struct sockaddr_in6));
 #ifdef HAVE_SIN6_LEN
 				addr_ipv6.sin6_len         = sizeof(struct sockaddr_in6);
 #endif
 				addr_ipv6.sin6_family      = AF_INET6;
 				addr_ipv6.sin6_port        = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port));
 				addr_ipv6.sin6_addr        = in6addr_any;
 				if (bind(SCTP_BASE_VAR(userspace_udpsctp6), (const struct sockaddr *)&addr_ipv6, sizeof(struct sockaddr_in6)) < 0) {
 #if defined(__Userspace_os_Windows)
 					SCTPDBG(SCTP_DEBUG_USR, "Can't bind socket for SCTP/UDP/IPv6 (errno = %d).\n", WSAGetLastError());
 					closesocket(SCTP_BASE_VAR(userspace_udpsctp6));
 #else
 					SCTPDBG(SCTP_DEBUG_USR, "Can't bind socket for SCTP/UDP/IPv6 (errno = %d).\n", errno);
 					close(SCTP_BASE_VAR(userspace_udpsctp6));
 #endif
 					SCTP_BASE_VAR(userspace_udpsctp6) = -1;
 				} else {
 					setReceiveBufferSize(SCTP_BASE_VAR(userspace_udpsctp6), SB_RAW); /* 128K */
 					setSendBufferSize(SCTP_BASE_VAR(userspace_udpsctp6), SB_RAW); /* 128K Is this setting net.inet.raw.maxdgram value? Should it be set to 64K? */
 				}
 			}
 		}
 	}
 #endif
 #if !defined(__Userspace_os_Windows)
 #if defined(__Userspace_os_Darwin) || defined(__Userspace_os_DragonFly) || defined(__Userspace_os_FreeBSD)
 #if defined(INET) || defined(INET6)
 	if (SCTP_BASE_VAR(userspace_route) != -1) {
 		int rc;
 		if ((rc = pthread_create(&SCTP_BASE_VAR(recvthreadroute), NULL, &recv_function_route, NULL))) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't start routing thread (%d).\n", rc);
 			close(SCTP_BASE_VAR(userspace_route));
 			SCTP_BASE_VAR(userspace_route) = -1;
 		}
 	}
 #endif
 #endif
 #if defined(INET)
 	if (SCTP_BASE_VAR(userspace_rawsctp) != -1) {
 		int rc;
 		if ((rc = pthread_create(&SCTP_BASE_VAR(recvthreadraw), NULL, &recv_function_raw, NULL))) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't start SCTP/IPv4 recv thread (%d).\n", rc);
 			close(SCTP_BASE_VAR(userspace_rawsctp));
 			SCTP_BASE_VAR(userspace_rawsctp) = -1;
 		}
 	}
 	if (SCTP_BASE_VAR(userspace_udpsctp) != -1) {
 		int rc;
 		if ((rc = pthread_create(&SCTP_BASE_VAR(recvthreadudp), NULL, &recv_function_udp, NULL))) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't start SCTP/UDP/IPv4 recv thread (%d).\n", rc);
 			close(SCTP_BASE_VAR(userspace_udpsctp));
 			SCTP_BASE_VAR(userspace_udpsctp) = -1;
 		}
 	}
 #endif
 #if defined(INET6)
 	if (SCTP_BASE_VAR(userspace_rawsctp6) != -1) {
 		int rc;
 		if ((rc = pthread_create(&SCTP_BASE_VAR(recvthreadraw6), NULL, &recv_function_raw6, NULL))) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't start SCTP/IPv6 recv thread (%d).\n", rc);
 			close(SCTP_BASE_VAR(userspace_rawsctp6));
 			SCTP_BASE_VAR(userspace_rawsctp6) = -1;
 		}
 	}
 	if (SCTP_BASE_VAR(userspace_udpsctp6) != -1) {
 		int rc;
 		if ((rc = pthread_create(&SCTP_BASE_VAR(recvthreadudp6), NULL, &recv_function_udp6, NULL))) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't start SCTP/UDP/IPv6 recv thread (%d).\n", rc);
 			close(SCTP_BASE_VAR(userspace_udpsctp6));
 			SCTP_BASE_VAR(userspace_udpsctp6) = -1;
 		}
 	}
 #endif
 #else
 #if defined(INET)
 	if (SCTP_BASE_VAR(userspace_rawsctp) != -1) {
 		if ((SCTP_BASE_VAR(recvthreadraw) = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)&recv_function_raw, NULL, 0, NULL)) == NULL) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't start SCTP/IPv4 recv thread.\n");
 			closesocket(SCTP_BASE_VAR(userspace_rawsctp));
 			SCTP_BASE_VAR(userspace_rawsctp) = -1;
 		}
 	}
 	if (SCTP_BASE_VAR(userspace_udpsctp) != -1) {
 		if ((SCTP_BASE_VAR(recvthreadudp) = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)&recv_function_udp, NULL, 0, NULL)) == NULL) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't start SCTP/UDP/IPv4 recv thread.\n");
 			closesocket(SCTP_BASE_VAR(userspace_udpsctp));
 			SCTP_BASE_VAR(userspace_udpsctp) = -1;
 		}
 	}
 #endif
 #if defined(INET6)
 	if (SCTP_BASE_VAR(userspace_rawsctp6) != -1) {
 		if ((SCTP_BASE_VAR(recvthreadraw6) = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)&recv_function_raw6, NULL, 0, NULL)) == NULL) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't start SCTP/IPv6 recv thread.\n");
 			closesocket(SCTP_BASE_VAR(userspace_rawsctp6));
 			SCTP_BASE_VAR(userspace_rawsctp6) = -1;
 		}
 	}
 	if (SCTP_BASE_VAR(userspace_udpsctp6) != -1) {
 		if ((SCTP_BASE_VAR(recvthreadudp6) = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)&recv_function_udp6, NULL, 0, NULL)) == NULL) {
 			SCTPDBG(SCTP_DEBUG_USR, "Can't start SCTP/UDP/IPv6 recv thread.\n");
 			closesocket(SCTP_BASE_VAR(userspace_udpsctp6));
 			SCTP_BASE_VAR(userspace_udpsctp6) = -1;
 		}
 	}
 #endif
 #endif
 }
 void
 recv_thread_destroy(void)
 {
 #if defined(__Userspace_os_Darwin) || defined(__Userspace_os_DragonFly) || defined(__Userspace_os_FreeBSD)
 #if defined(INET) || defined(INET6)
 	if (SCTP_BASE_VAR(userspace_route) != -1) {
 		close(SCTP_BASE_VAR(userspace_route));
 	}
 #endif
 #endif
 #if defined(INET)
 	if (SCTP_BASE_VAR(userspace_rawsctp) != -1) {
 #if defined(__Userspace_os_Windows)
 		closesocket(SCTP_BASE_VAR(userspace_rawsctp));
 #else
 		close(SCTP_BASE_VAR(userspace_rawsctp));
 #endif
 	}
 	if (SCTP_BASE_VAR(userspace_udpsctp) != -1) {
 #if defined(__Userspace_os_Windows)
 		closesocket(SCTP_BASE_VAR(userspace_udpsctp));
 #else
 		close(SCTP_BASE_VAR(userspace_udpsctp));
 #endif
 	}
 #endif
 #if defined(INET6)
 	if (SCTP_BASE_VAR(userspace_rawsctp6) != -1) {
 #if defined(__Userspace_os_Windows)
 		closesocket(SCTP_BASE_VAR(userspace_rawsctp6));
 #else
 		close(SCTP_BASE_VAR(userspace_rawsctp6));
 #endif
 	}
 	if (SCTP_BASE_VAR(userspace_udpsctp6) != -1) {
 #if defined(__Userspace_os_Windows)
 		closesocket(SCTP_BASE_VAR(userspace_udpsctp6));
 #else
 		close(SCTP_BASE_VAR(userspace_udpsctp6));
 #endif
 	}
 #endif
 }
 #else
 int foo;
 #endif

The Tor Browser / annotate

netwerk/sctp/src/user_recv_thread.c@ca08bd8f51b2 (annotated)

netwerk/sctp/src/user_recv_thread.c