Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 2504 insertions, 0 deletions

diff --git a/nx-X11/lib/xtrans/Xtranssock.c.X.original b/nx-X11/lib/xtrans/Xtranssock.c.X.original
new file mode 100644
index 000000000..0f3c6b46a
--- /dev/null
+++ b/nx-X11/lib/xtrans/Xtranssock.c.X.original
@@ -0,0 +1,2504 @@
+/* $XdotOrg: xc/lib/xtrans/Xtranssock.c,v 1.11 2005/11/08 06:33:26 jkj Exp $ */
+/* $Xorg: Xtranssock.c,v 1.11 2001/02/09 02:04:06 xorgcvs Exp $ */
+/*
+
+Copyright 1993, 1994, 1998  The Open Group
+Copyright 2002 Sun Microsystems, Inc.  All rights reserved.
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of the copyright holders shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from the copyright holders.
+
+*/
+/* $XFree86: xc/lib/xtrans/Xtranssock.c,v 3.68 2004/01/07 04:28:02 dawes Exp $ */
+
+/* Copyright 1993, 1994 NCR Corporation - Dayton, Ohio, USA
+ *
+ * All Rights Reserved
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name NCR not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission.  NCR makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ *
+ * NCR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL NCR BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <ctype.h>
+#ifdef XTHREADS
+#include <X11/Xthreads.h>
+#endif
+
+#ifndef WIN32
+
+#if defined(TCPCONN) || defined(UNIXCONN)
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#endif
+
+#if defined(TCPCONN) || defined(UNIXCONN)
+#define X_INCLUDE_NETDB_H
+#define XOS_USE_NO_LOCKING
+#include <X11/Xos_r.h>
+#endif
+
+#ifdef UNIXCONN
+#ifndef X_NO_SYS_UN
+#ifndef Lynx
+#include <sys/un.h>
+#else
+#include <un.h>
+#endif
+#endif
+#include <sys/stat.h>
+#endif
+
+#if defined(hpux) || (defined(MOTOROLA) && defined(SYSV))
+#define NO_TCP_H
+#endif 
+
+#ifndef NO_TCP_H
+#if defined(__osf__) || defined(linux) || defined(__GLIBC__) || defined(AIXV5)
+#include <sys/param.h>
+#endif /* osf */
+#if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
+#include <sys/param.h>
+#include <machine/endian.h>
+#endif /* __NetBSD__ || __OpenBSD__ || __FreeBSD__ || __DragonFly__ */
+#include <netinet/tcp.h>
+#endif /* !NO_TCP_H */
+
+#include <sys/ioctl.h>
+#if defined(SVR4) && !defined(DGUX) && !defined(_SEQUENT_)
+#include <sys/filio.h>
+#endif
+
+#if (defined(i386) && defined(SYSV)) && !defined(SCO325) && !defined(sun)
+#include <net/errno.h>
+#endif 
+
+#if (defined(i386) && defined(SYSV)) && (!defined(ISC) || !defined(I_NREAD) || defined(SCO325)) || defined(_SEQUENT_)
+#include <sys/stropts.h>
+#endif 
+
+#else /* !WIN32 */
+
+#include <X11/Xwinsock.h>
+#include <X11/Xwindows.h>
+#include <X11/Xw32defs.h>
+#undef close
+#define close closesocket
+#define ECONNREFUSED WSAECONNREFUSED
+#define EADDRINUSE WSAEADDRINUSE
+#define EPROTOTYPE WSAEPROTOTYPE
+#undef EWOULDBLOCK
+#define EWOULDBLOCK WSAEWOULDBLOCK
+#define EINPROGRESS WSAEINPROGRESS
+#undef EINTR
+#define EINTR WSAEINTR
+#define X_INCLUDE_NETDB_H
+#define XOS_USE_MTSAFE_NETDBAPI
+#include <X11/Xos_r.h>
+#endif /* WIN32 */
+
+#if defined(SO_DONTLINGER) && defined(SO_LINGER)
+#undef SO_DONTLINGER
+#endif
+
+#if defined(__UNIXOS2__)
+#if defined(NOT_EMX09A)
+static int IBMsockInit = 0;
+#define SocketInitOnce()\
+    if (!IBMsockInit) {\
+	sock_init();\
+	IBMsockInit = 1;\
+    }
+#undef EINTR
+#define EINTR SOCEINTR
+#undef EINVAL
+#define EINVAL SOCEINVAL
+#undef errno
+#define errno sock_errno()
+#undef close
+#define close soclose
+#undef ioctl
+#define ioctl sockioctl
+#else
+#define SocketInitOnce() /**/
+#endif
+/* this is still not there */
+#define SOCKET int
+#else
+/* others don't need this */
+#define SocketInitOnce() /**/
+#endif
+
+#define MIN_BACKLOG 128
+#ifdef SOMAXCONN
+#if SOMAXCONN > MIN_BACKLOG
+#define BACKLOG SOMAXCONN
+#endif
+#endif
+#ifndef BACKLOG
+#define BACKLOG MIN_BACKLOG
+#endif
+/*
+ * This is the Socket implementation of the X Transport service layer
+ *
+ * This file contains the implementation for both the UNIX and INET domains,
+ * and can be built for either one, or both.
+ *
+ */
+
+typedef struct _Sockettrans2dev {      
+    char	*transname;
+    int		family;
+    int		devcotsname;
+    int		devcltsname;
+    int		protocol;
+} Sockettrans2dev;
+
+static Sockettrans2dev Sockettrans2devtab[] = {
+#ifdef TCPCONN
+    {"inet",AF_INET,SOCK_STREAM,SOCK_DGRAM,0},
+#if !defined(IPv6) || !defined(AF_INET6)
+    {"tcp",AF_INET,SOCK_STREAM,SOCK_DGRAM,0},
+#else /* IPv6 */
+    {"tcp",AF_INET6,SOCK_STREAM,SOCK_DGRAM,0},
+    {"tcp",AF_INET,SOCK_STREAM,SOCK_DGRAM,0}, /* fallback */
+    {"inet6",AF_INET6,SOCK_STREAM,SOCK_DGRAM,0},
+#endif
+#endif /* TCPCONN */
+#ifdef UNIXCONN
+    {"unix",AF_UNIX,SOCK_STREAM,SOCK_DGRAM,0},
+#if !defined(LOCALCONN)
+    {"local",AF_UNIX,SOCK_STREAM,SOCK_DGRAM,0},
+#endif /* !LOCALCONN */
+#endif /* UNIXCONN */
+};
+
+#define NUMSOCKETFAMILIES (sizeof(Sockettrans2devtab)/sizeof(Sockettrans2dev))
+
+#ifdef TCPCONN
+static int TRANS(SocketINETClose) (XtransConnInfo ciptr);
+#endif
+
+#ifdef UNIXCONN
+
+#ifdef hpux
+
+#if defined(X11_t)
+#define UNIX_PATH "/usr/spool/sockets/X11/"
+#define UNIX_DIR "/usr/spool/sockets/X11"
+#define OLD_UNIX_PATH "/tmp/.X11-unix/X"
+#endif /* X11_t */
+#if defined(XIM_t)
+#define UNIX_PATH "/usr/spool/sockets/XIM/"
+#define UNIX_DIR "/usr/spool/sockets/XIM"
+#define OLD_UNIX_PATH "/tmp/.XIM-unix/XIM"
+#endif /* XIM_t */
+#if defined(FS_t) || defined(FONT_t)
+#define UNIX_PATH "/usr/spool/sockets/fontserv/"
+#define UNIX_DIR "/usr/spool/sockets/fontserv"
+#endif /* FS_t || FONT_t */
+#if defined(ICE_t)
+#define UNIX_PATH "/usr/spool/sockets/ICE/"
+#define UNIX_DIR "/usr/spool/sockets/ICE"
+#endif /* ICE_t */
+#if defined(TEST_t)
+#define UNIX_PATH "/usr/spool/sockets/xtrans_test/"
+#define UNIX_DIR "/usr/spool/sockets/xtrans_test"
+#endif
+#if defined(LBXPROXY_t)
+#define UNIX_PATH "/usr/spool/sockets/X11/"
+#define UNIX_DIR  "/usr/spool/sockets/X11"
+#endif
+
+#else /* !hpux */
+
+#if defined(X11_t)
+#define UNIX_PATH "/tmp/.X11-unix/X"
+#define UNIX_DIR "/tmp/.X11-unix"
+#endif /* X11_t */
+#if defined(XIM_t)
+#define UNIX_PATH "/tmp/.XIM-unix/XIM"
+#define UNIX_DIR "/tmp/.XIM-unix"
+#endif /* XIM_t */
+#if defined(FS_t) || defined(FONT_t)
+#define UNIX_PATH "/tmp/.font-unix/fs"
+#define UNIX_DIR "/tmp/.font-unix"
+#endif /* FS_t || FONT_t */
+#if defined(ICE_t)
+#define UNIX_PATH "/tmp/.ICE-unix/"
+#define UNIX_DIR "/tmp/.ICE-unix"
+#endif /* ICE_t */
+#if defined(TEST_t)
+#define UNIX_PATH "/tmp/.Test-unix/test"
+#define UNIX_DIR "/tmp/.Test-unix"
+#endif
+#if defined(LBXPROXY_t)
+#define UNIX_PATH "/tmp/.X11-unix/X"
+#define UNIX_DIR  "/tmp/.X11-unix"
+#endif
+
+#endif /* hpux */
+
+#endif /* UNIXCONN */
+
+#define PORTBUFSIZE	32
+
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 255
+#endif
+
+/*
+ * This provides compatibility for apps linked against system libraries
+ * that don't have IPv6 support.
+ */
+#if defined(IPv6) && defined(AF_INET6)
+static const struct in6_addr local_in6addr_any = IN6ADDR_ANY_INIT;
+#pragma weak in6addr_any = local_in6addr_any
+#ifndef __USLC__
+#pragma weak getaddrinfo
+#endif
+static int haveIPv6 = 1;
+#endif
+
+/*
+ * These are some utility function used by the real interface function below.
+ */
+
+static int
+TRANS(SocketSelectFamily) (int first, char *family)
+
+{
+    int     i;
+
+    PRMSG (3,"SocketSelectFamily(%s)\n", family, 0, 0);
+
+    for (i = first + 1; i < NUMSOCKETFAMILIES;i++)
+    {
+        if (!strcmp (family, Sockettrans2devtab[i].transname))
+	    return i;
+    }
+
+    return (first == -1 ? -2 : -1);
+}
+
+
+/*
+ * This function gets the local address of the socket and stores it in the
+ * XtransConnInfo structure for the connection.
+ */
+
+static int
+TRANS(SocketINETGetAddr) (XtransConnInfo ciptr)
+
+{
+#if defined(IPv6) && defined(AF_INET6)
+    struct sockaddr_storage socknamev6;
+#endif
+    struct sockaddr_in socknamev4;
+    void *socknamePtr;
+#if defined(SVR4) || defined(__SCO__)
+    size_t namelen;
+#else
+    int namelen;
+#endif
+
+    PRMSG (3,"SocketINETGetAddr(%p)\n", ciptr, 0, 0);
+
+#if defined(IPv6) && defined(AF_INET6)
+    if (haveIPv6)
+    {
+	namelen = sizeof(socknamev6);
+	socknamePtr = &socknamev6;
+    }
+    else
+#endif
+    {
+	namelen = sizeof(socknamev4);
+	socknamePtr = &socknamev4;
+    }
+
+    if (getsockname (ciptr->fd,(struct sockaddr *) socknamePtr,
+		     (void *)&namelen) < 0)
+    {
+#ifdef WIN32
+	errno = WSAGetLastError();
+#endif
+	PRMSG (1,"SocketINETGetAddr: getsockname() failed: %d\n",
+	    EGET(),0, 0);
+	return -1;
+    }
+
+    /*
+     * Everything looks good: fill in the XtransConnInfo structure.
+     */
+
+    if ((ciptr->addr = (char *) xalloc (namelen)) == NULL)
+    {
+        PRMSG (1,
+	    "SocketINETGetAddr: Can't allocate space for the addr\n",
+	    0, 0, 0);
+        return -1;
+    }
+
+#if defined(IPv6) && defined(AF_INET6)
+    if (haveIPv6)
+    {
+	ciptr->family = ((struct sockaddr *)socknamePtr)->sa_family;
+    }
+    else
+#endif
+    {
+	ciptr->family = socknamev4.sin_family;
+    }
+    ciptr->addrlen = namelen;
+    memcpy (ciptr->addr, socknamePtr, ciptr->addrlen);
+
+    return 0;
+}
+
+
+/*
+ * This function gets the remote address of the socket and stores it in the
+ * XtransConnInfo structure for the connection.
+ */
+
+static int
+TRANS(SocketINETGetPeerAddr) (XtransConnInfo ciptr)
+
+{
+#if defined(IPv6) && defined(AF_INET6)
+    struct sockaddr_storage socknamev6;
+#endif
+    struct sockaddr_in 	socknamev4;
+    void *socknamePtr;
+#if defined(SVR4) || defined(__SCO__)
+    size_t namelen;
+#else
+    int namelen;
+#endif
+
+#if defined(IPv6) && defined(AF_INET6)
+    if (haveIPv6 && ciptr->family == AF_INET6)
+    {
+	namelen = sizeof(socknamev6);
+	socknamePtr = &socknamev6;
+    }
+    else
+#endif
+    {
+	namelen = sizeof(socknamev4);
+	socknamePtr = &socknamev4;
+    }
+
+    PRMSG (3,"SocketINETGetPeerAddr(%p)\n", ciptr, 0, 0);
+
+    if (getpeername (ciptr->fd, (struct sockaddr *) socknamePtr,
+		     (void *)&namelen) < 0)
+    {
+#ifdef WIN32
+	errno = WSAGetLastError();
+#endif
+	PRMSG (1,"SocketINETGetPeerAddr: getpeername() failed: %d\n",
+	    EGET(), 0, 0);
+	return -1;
+    }
+
+    /*
+     * Everything looks good: fill in the XtransConnInfo structure.
+     */
+
+    if ((ciptr->peeraddr = (char *) xalloc (namelen)) == NULL)
+    {
+        PRMSG (1,
+	   "SocketINETGetPeerAddr: Can't allocate space for the addr\n",
+	   0, 0, 0);
+        return -1;
+    }
+
+    ciptr->peeraddrlen = namelen;
+    memcpy (ciptr->peeraddr, socknamePtr, ciptr->peeraddrlen);
+
+    return 0;
+}
+
+
+static XtransConnInfo
+TRANS(SocketOpen) (int i, int type)
+
+{
+    XtransConnInfo	ciptr;
+
+    PRMSG (3,"SocketOpen(%d,%d)\n", i, type, 0);
+
+#if defined(IPv6) && defined(AF_INET6)
+    if (getaddrinfo == NULL)
+	haveIPv6 = 0;
+
+    if (!haveIPv6 && Sockettrans2devtab[i].family == AF_INET6)
+	return NULL;
+#endif
+
+    if ((ciptr = (XtransConnInfo) xcalloc (
+	1, sizeof(struct _XtransConnInfo))) == NULL)
+    {
+	PRMSG (1, "SocketOpen: malloc failed\n", 0, 0, 0);
+	return NULL;
+    }
+
+    if ((ciptr->fd = socket(Sockettrans2devtab[i].family, type,
+	Sockettrans2devtab[i].protocol)) < 0
+#ifndef WIN32
+#if (defined(X11_t) && !defined(USE_POLL)) || defined(FS_t) || defined(FONT_t)
+       || ciptr->fd >= TRANS_OPEN_MAX
+#endif
+#endif
+      ) {
+#ifdef WIN32
+	errno = WSAGetLastError();
+#endif
+	PRMSG (2, "SocketOpen: socket() failed for %s\n",
+	    Sockettrans2devtab[i].transname, 0, 0);
+
+	xfree ((char *) ciptr);
+	return NULL;
+    }
+
+#ifdef TCP_NODELAY
+    if (Sockettrans2devtab[i].family == AF_INET
+#if defined(IPv6) && defined(AF_INET6)
+      || Sockettrans2devtab[i].family == AF_INET6
+#endif
+    )
+    {
+	/*
+	 * turn off TCP coalescence for INET sockets
+	 */
+
+	int tmp = 1;
+	setsockopt (ciptr->fd, IPPROTO_TCP, TCP_NODELAY,
+	    (char *) &tmp, sizeof (int));
+    }
+#endif
+
+    return ciptr;
+}
+
+
+#ifdef TRANS_REOPEN
+
+static XtransConnInfo
+TRANS(SocketReopen) (int i, int type, int fd, char *port)
+
+{
+    XtransConnInfo	ciptr;
+
+    PRMSG (3,"SocketReopen(%d,%d,%s)\n", type, fd, port);
+
+    if ((ciptr = (XtransConnInfo) xcalloc (
+	1, sizeof(struct _XtransConnInfo))) == NULL)
+    {
+	PRMSG (1, "SocketReopen: malloc failed\n", 0, 0, 0);
+	return NULL;
+    }
+
+    ciptr->fd = fd;
+
+    return ciptr;
+}
+
+#endif /* TRANS_REOPEN */
+
+
+/*
+ * These functions are the interface supplied in the Xtransport structure
+ */
+
+#ifdef TRANS_CLIENT
+
+static XtransConnInfo
+TRANS(SocketOpenCOTSClientBase) (char *transname, char *protocol,
+				char *host, char *port, int previndex)
+{
+    XtransConnInfo	ciptr;
+    int			i = previndex;
+
+    PRMSG (2, "SocketOpenCOTSClient(%s,%s,%s)\n",
+	protocol, host, port);
+
+    SocketInitOnce();
+
+    while ((i = TRANS(SocketSelectFamily) (i, transname)) >= 0) {
+	if ((ciptr = TRANS(SocketOpen) (
+		 i, Sockettrans2devtab[i].devcotsname)) != NULL)
+	    break;
+    }
+    if (i < 0) {
+	if (i == -1)
+	    PRMSG (1,"SocketOpenCOTSClient: Unable to open socket for %s\n",
+		   transname, 0, 0);
+	else
+	    PRMSG (1,"SocketOpenCOTSClient: Unable to determine socket type for %s\n",
+		   transname, 0, 0);
+	return NULL;
+    }
+
+    /* Save the index for later use */
+
+    ciptr->index = i;
+
+    return ciptr;
+}
+
+static XtransConnInfo
+TRANS(SocketOpenCOTSClient) (Xtransport *thistrans, char *protocol, 
+			     char *host, char *port)
+{
+    return TRANS(SocketOpenCOTSClientBase)(
+			thistrans->TransName, protocol, host, port, -1);
+}
+
+
+#endif /* TRANS_CLIENT */
+
+
+#ifdef TRANS_SERVER
+
+static XtransConnInfo
+TRANS(SocketOpenCOTSServer) (Xtransport *thistrans, char *protocol, 
+			     char *host, char *port)
+
+{
+    XtransConnInfo	ciptr;
+    int	i = -1;
+
+    PRMSG (2,"SocketOpenCOTSServer(%s,%s,%s)\n", protocol, host, port);
+
+    SocketInitOnce();
+
+    while ((i = TRANS(SocketSelectFamily) (i, thistrans->TransName)) >= 0) {
+	if ((ciptr = TRANS(SocketOpen) (
+		 i, Sockettrans2devtab[i].devcotsname)) != NULL)
+	    break;
+    }
+    if (i < 0) {
+	if (i == -1)
+	    PRMSG (1,"SocketOpenCOTSServer: Unable to open socket for %s\n",
+		   thistrans->TransName, 0, 0);
+	else
+	    PRMSG (1,"SocketOpenCOTSServer: Unable to determine socket type for %s\n",
+		   thistrans->TransName, 0, 0);
+	return NULL;
+    }
+
+    /*
+     * Using this prevents the bind() check for an existing server listening
+     * on the same port, but it is required for other reasons.
+     */
+#ifdef SO_REUSEADDR
+
+    /*
+     * SO_REUSEADDR only applied to AF_INET && AF_INET6
+     */
+
+    if (Sockettrans2devtab[i].family == AF_INET
+#if defined(IPv6) && defined(AF_INET6)
+      || Sockettrans2devtab[i].family == AF_INET6
+#endif
+    )
+    {
+	int one = 1;
+	setsockopt (ciptr->fd, SOL_SOCKET, SO_REUSEADDR,
+		    (char *) &one, sizeof (int));
+    }
+#endif
+#ifdef IPV6_V6ONLY
+    if (Sockettrans2devtab[i].family == AF_INET6)
+    {
+	int one = 1;
+	setsockopt(ciptr->fd, IPPROTO_IPV6, IPV6_V6ONLY, &one, sizeof(int));
+    }
+#endif
+    /* Save the index for later use */
+
+    ciptr->index = i;
+
+    return ciptr;
+}
+
+#endif /* TRANS_SERVER */
+
+
+#ifdef TRANS_CLIENT
+
+static XtransConnInfo
+TRANS(SocketOpenCLTSClient) (Xtransport *thistrans, char *protocol, 
+			     char *host, char *port)
+
+{
+    XtransConnInfo	ciptr;
+    int			i = -1;
+
+    PRMSG (2,"SocketOpenCLTSClient(%s,%s,%s)\n", protocol, host, port);
+
+    SocketInitOnce();
+
+    while ((i = TRANS(SocketSelectFamily) (i, thistrans->TransName)) >= 0) {
+	if ((ciptr = TRANS(SocketOpen) (
+		 i, Sockettrans2devtab[i].devcotsname)) != NULL)
+	    break;
+    }
+    if (i < 0) {
+	if (i == -1)
+	    PRMSG (1,"SocketOpenCLTSClient: Unable to open socket for %s\n",
+		   thistrans->TransName, 0, 0);
+	else
+	    PRMSG (1,"SocketOpenCLTSClient: Unable to determine socket type for %s\n",
+		   thistrans->TransName, 0, 0);
+	return NULL;
+    }
+
+    /* Save the index for later use */
+
+    ciptr->index = i;
+
+    return ciptr;
+}
+
+#endif /* TRANS_CLIENT */
+
+
+#ifdef TRANS_SERVER
+
+static XtransConnInfo
+TRANS(SocketOpenCLTSServer) (Xtransport *thistrans, char *protocol, 
+			     char *host, char *port)
+
+{
+    XtransConnInfo	ciptr;
+    int	i = -1;
+
+    PRMSG (2,"SocketOpenCLTSServer(%s,%s,%s)\n", protocol, host, port);
+
+    SocketInitOnce();
+
+    while ((i = TRANS(SocketSelectFamily) (i, thistrans->TransName)) >= 0) {
+	if ((ciptr = TRANS(SocketOpen) (
+		 i, Sockettrans2devtab[i].devcotsname)) != NULL)
+	    break;
+    }
+    if (i < 0) {
+	if (i == -1)
+	    PRMSG (1,"SocketOpenCLTSServer: Unable to open socket for %s\n",
+		   thistrans->TransName, 0, 0);
+	else
+	    PRMSG (1,"SocketOpenCLTSServer: Unable to determine socket type for %s\n",
+		   thistrans->TransName, 0, 0);
+	return NULL;
+    }
+
+#ifdef IPV6_V6ONLY
+    if (Sockettrans2devtab[i].family == AF_INET6)
+    {
+	int one = 1;
+	setsockopt(ciptr->fd, IPPROTO_IPV6, IPV6_V6ONLY, &one, sizeof(int));
+    }
+#endif
+    /* Save the index for later use */
+
+    ciptr->index = i;
+
+    return ciptr;
+}
+
+#endif /* TRANS_SERVER */
+
+
+#ifdef TRANS_REOPEN
+
+static XtransConnInfo
+TRANS(SocketReopenCOTSServer) (Xtransport *thistrans, int fd, char *port)
+
+{
+    XtransConnInfo	ciptr;
+    int			i = -1;
+
+    PRMSG (2,
+	"SocketReopenCOTSServer(%d, %s)\n", fd, port, 0);
+
+    SocketInitOnce();
+
+    while ((i = TRANS(SocketSelectFamily) (i, thistrans->TransName)) >= 0) {
+	if ((ciptr = TRANS(SocketReopen) (
+		 i, Sockettrans2devtab[i].devcotsname, fd, port)) != NULL)
+	    break;
+    }
+    if (i < 0) {
+	if (i == -1)
+	    PRMSG (1,"SocketReopenCOTSServer: Unable to open socket for %s\n",
+		   thistrans->TransName, 0, 0);
+	else
+	    PRMSG (1,"SocketReopenCOTSServer: Unable to determine socket type for %s\n",
+		   thistrans->TransName, 0, 0);
+	return NULL;
+    }
+
+    /* Save the index for later use */
+
+    ciptr->index = i;
+
+    return ciptr;
+}
+
+static XtransConnInfo
+TRANS(SocketReopenCLTSServer) (Xtransport *thistrans, int fd, char *port)
+
+{
+    XtransConnInfo	ciptr;
+    int			i = -1;
+
+    PRMSG (2,
+	"SocketReopenCLTSServer(%d, %s)\n", fd, port, 0);
+
+    SocketInitOnce();
+
+    while ((i = TRANS(SocketSelectFamily) (i, thistrans->TransName)) >= 0) {
+	if ((ciptr = TRANS(SocketReopen) (
+		 i, Sockettrans2devtab[i].devcotsname, fd, port)) != NULL)
+	    break;
+    }
+    if (i < 0) {
+	if (i == -1)
+	    PRMSG (1,"SocketReopenCLTSServer: Unable to open socket for %s\n",
+		   thistrans->TransName, 0, 0);
+	else
+	    PRMSG (1,"SocketReopenCLTSServer: Unable to determine socket type for %s\n",
+		   thistrans->TransName, 0, 0);
+	return NULL;
+    }
+
+    /* Save the index for later use */
+
+    ciptr->index = i;
+
+    return ciptr;
+}
+
+#endif /* TRANS_REOPEN */
+
+
+static int
+TRANS(SocketSetOption) (XtransConnInfo ciptr, int option, int arg)
+
+{
+    PRMSG (2,"SocketSetOption(%d,%d,%d)\n", ciptr->fd, option, arg);
+
+    return -1;
+}
+
+#ifdef UNIXCONN
+static int
+set_sun_path(const char *port, const char *upath, char *path)
+{
+    struct sockaddr_un s;
+    int maxlen = sizeof(s.sun_path) - 1;
+
+    if (!port || !*port || !path)
+	return -1;
+
+    if (*port == '/') { /* a full pathname */
+	if (strlen(port) > maxlen)
+	    return -1;
+	sprintf(path, "%s", port);
+    } else {
+	if (strlen(port) + strlen(upath) > maxlen)
+	    return -1;
+	sprintf(path, "%s%s", upath, port);
+    }
+    return 0;
+}
+#endif
+
+#ifdef TRANS_SERVER
+
+static int
+TRANS(SocketCreateListener) (XtransConnInfo ciptr, 
+			     struct sockaddr *sockname,
+			     int socknamelen, unsigned int flags)
+
+{
+    int	namelen = socknamelen;
+    int	fd = ciptr->fd;
+    int	retry;
+
+    PRMSG (3, "SocketCreateListener(%x,%p)\n", ciptr, fd, 0);
+
+    if (Sockettrans2devtab[ciptr->index].family == AF_INET
+#if defined(IPv6) && defined(AF_INET6)
+      || Sockettrans2devtab[ciptr->index].family == AF_INET6
+#endif
+	)
+	retry = 20;
+    else
+	retry = 0;
+
+    while (bind (fd, (struct sockaddr *) sockname, namelen) < 0)
+    {
+	if (errno == EADDRINUSE) {
+	    if (flags & ADDR_IN_USE_ALLOWED)
+		break;
+	    else
+		return TRANS_ADDR_IN_USE;
+	}
+	
+	if (retry-- == 0) {
+	    PRMSG (1, "SocketCreateListener: failed to bind listener\n",
+		0, 0, 0);
+	    close (fd);
+	    return TRANS_CREATE_LISTENER_FAILED;
+	}
+#ifdef SO_REUSEADDR
+	sleep (1);
+#else
+	sleep (10);
+#endif /* SO_REUSEDADDR */
+    }
+
+    if (Sockettrans2devtab[ciptr->index].family == AF_INET
+#if defined(IPv6) && defined(AF_INET6)
+      || Sockettrans2devtab[ciptr->index].family == AF_INET6
+#endif
+	) {
+#ifdef SO_DONTLINGER
+	setsockopt (fd, SOL_SOCKET, SO_DONTLINGER, (char *) NULL, 0);
+#else
+#ifdef SO_LINGER
+    {
+	static int linger[2] = { 0, 0 };
+	setsockopt (fd, SOL_SOCKET, SO_LINGER,
+		(char *) linger, sizeof (linger));
+    }
+#endif
+#endif
+}
+
+    if (listen (fd, BACKLOG) < 0)
+    {
+	PRMSG (1, "SocketCreateListener: listen() failed\n", 0, 0, 0);
+	close (fd);
+	return TRANS_CREATE_LISTENER_FAILED;
+    }
+	
+    /* Set a flag to indicate that this connection is a listener */
+
+    ciptr->flags = 1 | (ciptr->flags & TRANS_KEEPFLAGS);
+
+    return 0;
+}
+
+#ifdef TCPCONN
+static int
+TRANS(SocketINETCreateListener) (XtransConnInfo ciptr, char *port, unsigned int flags)
+
+{
+#if defined(IPv6) && defined(AF_INET6)
+    struct sockaddr_storage sockname;
+#else
+    struct sockaddr_in	    sockname;
+#endif
+    unsigned short	    sport;
+    int		namelen = sizeof(sockname);
+    int		status;
+    long	tmpport;
+#ifdef XTHREADS_NEEDS_BYNAMEPARAMS
+    _Xgetservbynameparams sparams;
+#endif
+    struct servent *servp;
+
+#ifdef X11_t
+    char	portbuf[PORTBUFSIZE];
+#endif
+    
+    PRMSG (2, "SocketINETCreateListener(%s)\n", port, 0, 0);
+
+#ifdef X11_t
+    /*
+     * X has a well known port, that is transport dependent. It is easier
+     * to handle it here, than try and come up with a transport independent
+     * representation that can be passed in and resolved the usual way.
+     *
+     * The port that is passed here is really a string containing the idisplay
+     * from ConnectDisplay().
+     */
+
+    if (is_numeric (port))
+    {
+	/* fixup the server port address */
+	tmpport = X_TCP_PORT + strtol (port, (char**)NULL, 10);
+	sprintf (portbuf,"%lu", tmpport);
+	port = portbuf;
+    }
+#endif
+
+    if (port && *port)
+    {
+	/* Check to see if the port string is just a number (handles X11) */
+
+	if (!is_numeric (port))
+	{
+	    if ((servp = _XGetservbyname (port,"tcp",sparams)) == NULL)
+	    {
+		PRMSG (1,
+	     "SocketINETCreateListener: Unable to get service for %s\n",
+		      port, 0, 0);
+		return TRANS_CREATE_LISTENER_FAILED;
+	    }
+	    /* we trust getservbyname to return a valid number */
+	    sport = servp->s_port;
+	}
+	else
+	{
+	    tmpport = strtol (port, (char**)NULL, 10);
+	    /* 
+	     * check that somehow the port address isn't negative or in
+	     * the range of reserved port addresses. This can happen and
+	     * be very bad if the server is suid-root and the user does 
+	     * something (dumb) like `X :60049`. 
+	     */
+	    if (tmpport < 1024 || tmpport > USHRT_MAX)
+		return TRANS_CREATE_LISTENER_FAILED;
+
+	    sport = (unsigned short) tmpport;
+	}
+    }
+    else
+	sport = 0;
+
+    bzero(&sockname, sizeof(sockname));
+#if defined(IPv6) && defined(AF_INET6)
+    if (Sockettrans2devtab[ciptr->index].family == AF_INET) {
+	namelen = sizeof (struct sockaddr_in);
+#ifdef BSD44SOCKETS
+	((struct sockaddr_in *)&sockname)->sin_len = namelen;
+#endif
+	((struct sockaddr_in *)&sockname)->sin_family = AF_INET;
+	((struct sockaddr_in *)&sockname)->sin_port = htons(sport);
+	((struct sockaddr_in *)&sockname)->sin_addr.s_addr = htonl(INADDR_ANY);
+    } else {
+	namelen = sizeof (struct sockaddr_in6);
+#ifdef SIN6_LEN
+	((struct sockaddr_in6 *)&sockname)->sin6_len = sizeof(sockname);
+#endif
+	((struct sockaddr_in6 *)&sockname)->sin6_family = AF_INET6;
+	((struct sockaddr_in6 *)&sockname)->sin6_port = htons(sport);
+	((struct sockaddr_in6 *)&sockname)->sin6_addr = in6addr_any;
+    }
+#else
+#ifdef BSD44SOCKETS
+    sockname.sin_len = sizeof (sockname);
+#endif
+    sockname.sin_family = AF_INET;
+    sockname.sin_port = htons (sport);
+    sockname.sin_addr.s_addr = htonl (INADDR_ANY);
+#endif
+
+    if ((status = TRANS(SocketCreateListener) (ciptr,
+	(struct sockaddr *) &sockname, namelen, flags)) < 0)
+    {
+	PRMSG (1,
+    "SocketINETCreateListener: ...SocketCreateListener() failed\n",
+	    0, 0, 0);
+	return status;
+    }
+
+    if (TRANS(SocketINETGetAddr) (ciptr) < 0)
+    {
+	PRMSG (1,
+       "SocketINETCreateListener: ...SocketINETGetAddr() failed\n",
+	    0, 0, 0);
+	return TRANS_CREATE_LISTENER_FAILED;
+    }
+
+    return 0;
+}
+
+#endif /* SOCKCONN */
+
+
+#ifdef UNIXCONN
+
+static int
+TRANS(SocketUNIXCreateListener) (XtransConnInfo ciptr, char *port,
+				 unsigned int flags)
+
+{
+    struct sockaddr_un	sockname;
+    int			namelen;
+    int			oldUmask;
+    int			status;
+    unsigned int	mode;
+
+    PRMSG (2, "SocketUNIXCreateListener(%s)\n",
+	port ? port : "NULL", 0, 0);
+
+    /* Make sure the directory is created */
+
+    oldUmask = umask (0);
+
+#ifdef UNIX_DIR
+#ifdef HAS_STICKY_DIR_BIT
+    mode = 01777;
+#else
+    mode = 0777;
+#endif
+    if (trans_mkdir(UNIX_DIR, mode) == -1) {
+	PRMSG (1, "SocketUNIXCreateListener: mkdir(%s) failed, errno = %d\n",
+	       UNIX_DIR, errno, 0);
+	(void) umask (oldUmask);
+	return TRANS_CREATE_LISTENER_FAILED;
+    }
+#endif
+
+    sockname.sun_family = AF_UNIX;
+
+    if (port && *port) {
+	if (set_sun_path(port, UNIX_PATH, sockname.sun_path) != 0) {
+	    PRMSG (1, "SocketUNIXCreateListener: path too long\n", 0, 0, 0);
+	    return TRANS_CREATE_LISTENER_FAILED;
+	}
+    } else {
+	sprintf (sockname.sun_path, "%s%ld", UNIX_PATH, (long)getpid());
+    }
+
+#if (defined(BSD44SOCKETS) || defined(__UNIXWARE__)) && !defined(Lynx)
+    sockname.sun_len = strlen(sockname.sun_path);
+    namelen = SUN_LEN(&sockname);
+#else
+    namelen = strlen(sockname.sun_path) + sizeof(sockname.sun_family);
+#endif
+
+    unlink (sockname.sun_path);
+
+    if ((status = TRANS(SocketCreateListener) (ciptr,
+	(struct sockaddr *) &sockname, namelen, flags)) < 0)
+    {
+	PRMSG (1,
+    "SocketUNIXCreateListener: ...SocketCreateListener() failed\n",
+	    0, 0, 0);
+	(void) umask (oldUmask);
+	return status;
+    }
+
+    /*
+     * Now that the listener is esablished, create the addr info for
+     * this connection. getpeername() doesn't work for UNIX Domain Sockets
+     * on some systems (hpux at least), so we will just do it manually, instead
+     * of calling something like TRANS(SocketUNIXGetAddr).
+     */
+
+    namelen = sizeof (sockname); /* this will always make it the same size */
+
+    if ((ciptr->addr = (char *) xalloc (namelen)) == NULL)
+    {
+        PRMSG (1,
+        "SocketUNIXCreateListener: Can't allocate space for the addr\n",
+	    0, 0, 0);
+	(void) umask (oldUmask);
+        return TRANS_CREATE_LISTENER_FAILED;
+    }
+
+    ciptr->family = sockname.sun_family;
+    ciptr->addrlen = namelen;
+    memcpy (ciptr->addr, &sockname, ciptr->addrlen);
+
+    (void) umask (oldUmask);
+
+    return 0;
+}
+
+
+static int
+TRANS(SocketUNIXResetListener) (XtransConnInfo ciptr)
+
+{
+    /*
+     * See if the unix domain socket has disappeared.  If it has, recreate it.
+     */
+
+    struct sockaddr_un 	*unsock = (struct sockaddr_un *) ciptr->addr;
+    struct stat		statb;
+    int 		status = TRANS_RESET_NOOP;
+    unsigned int	mode;
+
+    PRMSG (3, "SocketUNIXResetListener(%p,%d)\n", ciptr, ciptr->fd, 0);
+
+    if (stat (unsock->sun_path, &statb) == -1 ||
+        ((statb.st_mode & S_IFMT) !=
+#if (defined (sun) && defined(SVR4)) || defined(NCR) || defined(SCO325) || !defined(S_IFSOCK)
+	  		S_IFIFO))
+#else
+			S_IFSOCK))
+#endif
+    {
+	int oldUmask = umask (0);
+
+#ifdef UNIX_DIR
+#ifdef HAS_STICKY_DIR_BIT
+	mode = 01777;
+#else
+	mode = 0777;
+#endif
+        if (trans_mkdir(UNIX_DIR, mode) == -1) {
+            PRMSG (1, "SocketUNIXResetListener: mkdir(%s) failed, errno = %d\n",
+	    UNIX_DIR, errno, 0);
+	    (void) umask (oldUmask);
+	    return TRANS_RESET_FAILURE;
+        }
+#endif
+
+	close (ciptr->fd);
+	unlink (unsock->sun_path);
+
+	if ((ciptr->fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0)
+	{
+	    TRANS(FreeConnInfo) (ciptr);
+	    (void) umask (oldUmask);
+	    return TRANS_RESET_FAILURE;
+	}
+
+	if (bind (ciptr->fd, (struct sockaddr *) unsock, ciptr->addrlen) < 0)
+	{
+	    close (ciptr->fd);
+	    TRANS(FreeConnInfo) (ciptr);
+	    return TRANS_RESET_FAILURE;
+	}
+
+	if (listen (ciptr->fd, BACKLOG) < 0)
+	{
+	    close (ciptr->fd);
+	    TRANS(FreeConnInfo) (ciptr);
+	    (void) umask (oldUmask);
+	    return TRANS_RESET_FAILURE;
+	}
+
+	umask (oldUmask);
+
+	status = TRANS_RESET_NEW_FD;
+    }
+
+    return status;
+}
+
+#endif /* UNIXCONN */
+
+
+#ifdef TCPCONN
+
+static XtransConnInfo
+TRANS(SocketINETAccept) (XtransConnInfo ciptr, int *status)
+
+{
+    XtransConnInfo	newciptr;
+    struct sockaddr_in	sockname;
+    int			namelen = sizeof(sockname);
+
+    PRMSG (2, "SocketINETAccept(%p,%d)\n", ciptr, ciptr->fd, 0);
+
+    if ((newciptr = (XtransConnInfo) xcalloc (
+	1, sizeof(struct _XtransConnInfo))) == NULL)
+    {
+	PRMSG (1, "SocketINETAccept: malloc failed\n", 0, 0, 0);
+	*status = TRANS_ACCEPT_BAD_MALLOC;
+	return NULL;
+    }
+
+    if ((newciptr->fd = accept (ciptr->fd,
+	(struct sockaddr *) &sockname, (void *)&namelen)) < 0)
+    {
+#ifdef WIN32
+	errno = WSAGetLastError();
+#endif
+	PRMSG (1, "SocketINETAccept: accept() failed\n", 0, 0, 0);
+	xfree (newciptr);
+	*status = TRANS_ACCEPT_FAILED;
+	return NULL;
+    }
+
+#ifdef TCP_NODELAY
+    {
+	/*
+	 * turn off TCP coalescence for INET sockets
+	 */
+
+	int tmp = 1;
+	setsockopt (newciptr->fd, IPPROTO_TCP, TCP_NODELAY,
+	    (char *) &tmp, sizeof (int));
+    }
+#endif
+
+    /*
+     * Get this address again because the transport may give a more 
+     * specific address now that a connection is established.
+     */
+
+    if (TRANS(SocketINETGetAddr) (newciptr) < 0)
+    {
+	PRMSG (1,
+	    "SocketINETAccept: ...SocketINETGetAddr() failed:\n",
+	    0, 0, 0);
+	close (newciptr->fd);
+	xfree (newciptr);
+	*status = TRANS_ACCEPT_MISC_ERROR;
+        return NULL;
+    }
+
+    if (TRANS(SocketINETGetPeerAddr) (newciptr) < 0)
+    {
+	PRMSG (1,
+	  "SocketINETAccept: ...SocketINETGetPeerAddr() failed:\n",
+		0, 0, 0);
+	close (newciptr->fd);
+	if (newciptr->addr) xfree (newciptr->addr);
+	xfree (newciptr);
+	*status = TRANS_ACCEPT_MISC_ERROR;
+        return NULL;
+    }
+
+    *status = 0;
+
+    return newciptr;
+}
+
+#endif /* TCPCONN */
+
+
+#ifdef UNIXCONN
+static XtransConnInfo
+TRANS(SocketUNIXAccept) (XtransConnInfo ciptr, int *status)
+
+{
+    XtransConnInfo	newciptr;
+    struct sockaddr_un	sockname;
+#if defined(SVR4) || defined(__SCO__)
+    size_t namelen = sizeof sockname;
+#else
+    int namelen = sizeof sockname;
+#endif
+
+    PRMSG (2, "SocketUNIXAccept(%p,%d)\n", ciptr, ciptr->fd, 0);
+
+    if ((newciptr = (XtransConnInfo) xcalloc (
+	1, sizeof(struct _XtransConnInfo))) == NULL)
+    {
+	PRMSG (1, "SocketUNIXAccept: malloc() failed\n", 0, 0, 0);
+	*status = TRANS_ACCEPT_BAD_MALLOC;
+	return NULL;
+    }
+
+    if ((newciptr->fd = accept (ciptr->fd,
+	(struct sockaddr *) &sockname, (void *)&namelen)) < 0)
+    {
+	PRMSG (1, "SocketUNIXAccept: accept() failed\n", 0, 0, 0);
+	xfree (newciptr);
+	*status = TRANS_ACCEPT_FAILED;
+	return NULL;
+    }
+
+    /*
+     * Get the socket name and the peer name from the listener socket,
+     * since this is unix domain.
+     */
+
+    if ((newciptr->addr = (char *) xalloc (ciptr->addrlen)) == NULL)
+    {
+        PRMSG (1,
+        "SocketUNIXAccept: Can't allocate space for the addr\n",
+	      0, 0, 0);
+	close (newciptr->fd);
+	xfree (newciptr);
+	*status = TRANS_ACCEPT_BAD_MALLOC;
+        return NULL;
+    }
+
+
+    newciptr->addrlen = ciptr->addrlen;
+    memcpy (newciptr->addr, ciptr->addr, newciptr->addrlen);
+
+    if ((newciptr->peeraddr = (char *) xalloc (ciptr->addrlen)) == NULL)
+    {
+        PRMSG (1,
+	      "SocketUNIXAccept: Can't allocate space for the addr\n",
+	      0, 0, 0);
+	close (newciptr->fd);
+	if (newciptr->addr) xfree (newciptr->addr);
+	xfree (newciptr);
+	*status = TRANS_ACCEPT_BAD_MALLOC;
+        return NULL;
+    }
+    
+    newciptr->peeraddrlen = ciptr->addrlen;
+    memcpy (newciptr->peeraddr, ciptr->addr, newciptr->addrlen);
+
+    newciptr->family = AF_UNIX;
+
+    *status = 0;
+
+    return newciptr;
+}
+
+#endif /* UNIXCONN */
+
+#endif /* TRANS_SERVER */
+
+
+#ifdef TRANS_CLIENT
+
+#ifdef TCPCONN
+
+#if defined(IPv6) && defined(AF_INET6)
+struct addrlist {
+    struct addrinfo *	addr;
+    struct addrinfo *	firstaddr; 
+    char 		port[PORTBUFSIZE];
+    char 		host[MAXHOSTNAMELEN];
+};
+static struct addrlist  *addrlist = NULL;
+#endif
+
+
+static int
+TRANS(SocketINETConnect) (XtransConnInfo ciptr, char *host, char *port)
+
+{
+    struct sockaddr *	socketaddr = NULL;
+    int			socketaddrlen = 0;
+    int			res;
+#if defined(IPv6) && defined(AF_INET6)
+    struct addrinfo 	hints;
+    char		ntopbuf[INET6_ADDRSTRLEN];
+    int			resetonce = 0;
+#endif
+    struct sockaddr_in	sockname;
+#ifdef XTHREADS_NEEDS_BYNAMEPARAMS
+    _Xgethostbynameparams hparams;
+    _Xgetservbynameparams sparams;
+#endif
+    struct hostent	*hostp;
+    struct servent	*servp;
+    unsigned long 	tmpaddr;
+#ifdef X11_t
+    char	portbuf[PORTBUFSIZE];
+#endif
+
+    long		tmpport;
+    char 		hostnamebuf[256];		/* tmp space */
+
+    PRMSG (2,"SocketINETConnect(%d,%s,%s)\n", ciptr->fd, host, port);
+
+    if (!host)
+    {
+	hostnamebuf[0] = '\0';
+	(void) TRANS(GetHostname) (hostnamebuf, sizeof hostnamebuf);
+	host = hostnamebuf;
+    }
+
+#ifdef X11_t
+    /*
+     * X has a well known port, that is transport dependent. It is easier
+     * to handle it here, than try and come up with a transport independent
+     * representation that can be passed in and resolved the usual way.
+     *
+     * The port that is passed here is really a string containing the idisplay
+     * from ConnectDisplay().
+     */
+
+    if (is_numeric (port))
+    {
+	tmpport = X_TCP_PORT + strtol (port, (char**)NULL, 10);
+	sprintf (portbuf, "%lu", tmpport);
+	port = portbuf;
+    }
+#endif
+
+#if defined(IPv6) && defined(AF_INET6)
+    if (haveIPv6) {
+	if (addrlist != NULL) {
+	    if (strcmp(host,addrlist->host) || strcmp(port,addrlist->port)) {
+		if (addrlist->firstaddr)
+		    freeaddrinfo(addrlist->firstaddr);
+		addrlist->firstaddr = NULL;
+	    }
+	} else {
+	    addrlist = malloc(sizeof(struct addrlist));
+	    addrlist->firstaddr = NULL;
+	}
+
+	if (addrlist->firstaddr == NULL) {
+	    strncpy(addrlist->port, port, sizeof(addrlist->port));
+	    addrlist->port[sizeof(addrlist->port) - 1] = '\0';
+	    strncpy(addrlist->host, host, sizeof(addrlist->host));
+	    addrlist->host[sizeof(addrlist->host) - 1] = '\0';
+
+	    bzero(&hints,sizeof(hints));
+	    hints.ai_socktype = Sockettrans2devtab[ciptr->index].devcotsname;
+
+	    res = getaddrinfo(host,port,&hints,&addrlist->firstaddr);
+	    if (res != 0) {
+		PRMSG (1, "SocketINETConnect() can't get address "
+			"for %s:%s: %s\n", host, port, gai_strerror(res));
+		ESET(EINVAL);
+		return TRANS_CONNECT_FAILED;
+	    }
+	    for (res = 0, addrlist->addr = addrlist->firstaddr;
+		 addrlist->addr ; res++) {
+		addrlist->addr = addrlist->addr->ai_next;
+	    }
+	    PRMSG(4,"Got New Address list with %d addresses\n", res, 0, 0);
+	    res = 0;
+	    addrlist->addr = NULL;
+	}
+
+	while (socketaddr == NULL) {
+	    if (addrlist->addr == NULL) {
+		if (resetonce) { 
+		    /* Already checked entire list - no usable addresses */
+		    PRMSG (1, "SocketINETConnect() no usable address "
+			   "for %s:%s\n", host, port, 0);
+		    return TRANS_CONNECT_FAILED;
+		} else {
+		    /* Go back to beginning of list */
+		    resetonce = 1;
+		    addrlist->addr = addrlist->firstaddr;
+		}
+	    } 
+
+	    socketaddr = addrlist->addr->ai_addr;
+	    socketaddrlen = addrlist->addr->ai_addrlen;
+
+	    if (addrlist->addr->ai_family == AF_INET) {
+		struct sockaddr_in *sin = (struct sockaddr_in *) socketaddr;
+
+		PRMSG (4,"SocketINETConnect() sockname.sin_addr = %s\n",
+			inet_ntop(addrlist->addr->ai_family,&sin->sin_addr,
+			ntopbuf,sizeof(ntopbuf)), 0, 0); 
+
+		PRMSG (4,"SocketINETConnect() sockname.sin_port = %d\n",
+			ntohs(sin->sin_port), 0, 0); 
+
+		if (Sockettrans2devtab[ciptr->index].family == AF_INET6) {
+		    if (strcmp(Sockettrans2devtab[ciptr->index].transname,
+				"tcp") == 0) {
+			XtransConnInfo newciptr;
+
+			/*
+			 * Our socket is an IPv6 socket, but the address is
+			 * IPv4.  Close it and get an IPv4 socket.  This is
+			 * needed for IPv4 connections to work on platforms
+			 * that don't allow IPv4 over IPv6 sockets.
+			 */
+			TRANS(SocketINETClose)(ciptr);
+			newciptr = TRANS(SocketOpenCOTSClientBase)(
+					"tcp", "tcp", host, port, ciptr->index);
+			if (newciptr)
+			    ciptr->fd = newciptr->fd;
+			if (!newciptr ||
+			    Sockettrans2devtab[newciptr->index].family !=
+				AF_INET) {
+			    socketaddr = NULL;
+			    PRMSG (4,"SocketINETConnect() Cannot get IPv4 "
+					" socketfor IPv4 address\n", 0,0,0);
+			}
+			if (newciptr)
+			    xfree(newciptr);
+		    } else {
+			socketaddr = NULL;
+			PRMSG (4,"SocketINETConnect Skipping IPv4 address\n",
+				0,0,0);
+		    }
+		}
+	    } else if (addrlist->addr->ai_family == AF_INET6) {
+		struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) socketaddr;
+	
+		PRMSG (4,"SocketINETConnect() sockname.sin6_addr = %s\n",
+			inet_ntop(addrlist->addr->ai_family,
+				  &sin6->sin6_addr,ntopbuf,sizeof(ntopbuf)),
+			0, 0); 
+		PRMSG (4,"SocketINETConnect() sockname.sin6_port = %d\n",
+			ntohs(sin6->sin6_port), 0, 0); 
+
+		if (Sockettrans2devtab[ciptr->index].family == AF_INET) {
+		    if (strcmp(Sockettrans2devtab[ciptr->index].transname,
+				"tcp") == 0) {
+			XtransConnInfo newciptr;
+
+			/*
+			 * Close the IPv4 socket and try to open an IPv6 socket.
+			 */
+			TRANS(SocketINETClose)(ciptr);
+			newciptr = TRANS(SocketOpenCOTSClientBase)(
+					"tcp", "tcp", host, port, -1);
+			if (newciptr)
+			    ciptr->fd = newciptr->fd;
+			if (!newciptr ||
+			    Sockettrans2devtab[newciptr->index].family !=
+					AF_INET6) {
+			    socketaddr = NULL;
+			    PRMSG (4,"SocketINETConnect() Cannot get IPv6 "
+				   "socket for IPv6 address\n", 0,0,0);
+			}
+			if (newciptr)
+			    xfree(newciptr);
+		    }
+		    else
+		    {
+			socketaddr = NULL;
+			PRMSG (4,"SocketINETConnect() Skipping IPv6 address\n",
+				0,0,0);
+		    }
+		}
+	    } else {
+		socketaddr = NULL; /* Unsupported address type */
+	    }
+	    if (socketaddr == NULL) {
+		addrlist->addr = addrlist->addr->ai_next;
+	    }
+	} 
+    } else
+#endif
+    {
+	/*
+	 * Build the socket name.
+	 */
+
+#ifdef BSD44SOCKETS
+	sockname.sin_len = sizeof (struct sockaddr_in);
+#endif
+	sockname.sin_family = AF_INET;
+
+	/*
+	 * fill in sin_addr
+	 */
+
+#ifndef INADDR_NONE
+#define INADDR_NONE ((in_addr_t) 0xffffffff)
+#endif
+
+	/* check for ww.xx.yy.zz host string */
+
+	if (isascii (host[0]) && isdigit (host[0])) {
+	    tmpaddr = inet_addr (host); /* returns network byte order */
+	} else {
+	    tmpaddr = INADDR_NONE;
+	}
+
+	PRMSG (4,"SocketINETConnect() inet_addr(%s) = %x\n", host, tmpaddr, 0);
+
+	if (tmpaddr == INADDR_NONE) {
+	    if ((hostp = _XGethostbyname(host,hparams)) == NULL) {
+		PRMSG (1,"SocketINETConnect: Can't get address for %s\n",
+			host, 0, 0);
+		ESET(EINVAL);
+		return TRANS_CONNECT_FAILED;
+	    }
+	    if (hostp->h_addrtype != AF_INET) {  /* is IP host? */
+		PRMSG (1,"SocketINETConnect: not INET host%s\n", host, 0, 0);
+		ESET(EPROTOTYPE);
+		return TRANS_CONNECT_FAILED;
+	    }
+	
+#if defined(CRAY) && defined(OLDTCP)
+	    /* Only Cray UNICOS3 and UNICOS4 will define this */
+	    {
+		long t;
+		memcpy ((char *)&t, (char *) hostp->h_addr, sizeof (t));
+		sockname.sin_addr = t;
+	    }
+#else
+	    memcpy ((char *) &sockname.sin_addr, (char *) hostp->h_addr,
+		    sizeof (sockname.sin_addr));
+#endif /* CRAY and OLDTCP */
+
+	} else {
+#if defined(CRAY) && defined(OLDTCP)
+	    /* Only Cray UNICOS3 and UNICOS4 will define this */
+	    sockname.sin_addr = tmpaddr;
+#else
+	    sockname.sin_addr.s_addr = tmpaddr;
+#endif /* CRAY and OLDTCP */
+        }
+
+	/*
+	 * fill in sin_port
+	 */
+
+	/* Check for number in the port string */
+
+	if (!is_numeric (port)) {
+	    if ((servp = _XGetservbyname (port,"tcp",sparams)) == NULL) {
+		PRMSG (1,"SocketINETConnect: can't get service for %s\n",
+			port, 0, 0);
+		return TRANS_CONNECT_FAILED;
+	    }
+	    sockname.sin_port = htons (servp->s_port);
+	} else {
+	    tmpport = strtol (port, (char**)NULL, 10);
+	    if (tmpport < 1024 || tmpport > USHRT_MAX)
+		return TRANS_CONNECT_FAILED;
+	    sockname.sin_port = htons (((unsigned short) tmpport));
+	}
+
+	PRMSG (4,"SocketINETConnect: sockname.sin_port = %d\n",
+		ntohs(sockname.sin_port), 0, 0);
+	socketaddr = (struct sockaddr *) &sockname;
+	socketaddrlen = sizeof(sockname);
+    }
+
+    /*
+     * Turn on socket keepalive so the client process will eventually
+     * be notified with a SIGPIPE signal if the display server fails
+     * to respond to a periodic transmission of messages
+     * on the connected socket.
+     * This is useful to avoid hung application processes when the
+     * processes are not spawned from the xdm session and
+     * the display server terminates abnormally.
+     * (Someone turned off the power switch.)
+     */
+
+    {
+	int tmp = 1;
+	setsockopt (ciptr->fd, SOL_SOCKET, SO_KEEPALIVE,
+		(char *) &tmp, sizeof (int));
+    }
+
+    /*
+     * Do the connect()
+     */
+
+    if (connect (ciptr->fd, socketaddr, socketaddrlen ) < 0)
+    {
+#ifdef WIN32
+	int olderrno = WSAGetLastError();
+#else
+	int olderrno = errno;
+#endif
+
+	/*
+	 * If the error was ECONNREFUSED, the server may be overloaded
+	 * and we should try again.
+	 *
+	 * If the error was EWOULDBLOCK or EINPROGRESS then the socket
+	 * was non-blocking and we should poll using select
+	 *
+	 * If the error was EINTR, the connect was interrupted and we
+	 * should try again.
+	 *
+	 * If multiple addresses are found for a host then we should
+	 * try to connect again with a different address for a larger
+	 * number of errors that made us quit before, since those
+	 * could be caused by trying to use an IPv6 address to contact
+	 * a machine with an IPv4-only server or other reasons that
+	 * only affect one of a set of addresses.  
+	 */
+
+	if (olderrno == ECONNREFUSED || olderrno == EINTR
+#if defined(IPv6) && defined(AF_INET6)
+	  || (haveIPv6 && ((addrlist->addr->ai_next != NULL) || 
+	        (addrlist->addr != addrlist->firstaddr)) &&
+               (olderrno == ENETUNREACH || olderrno == EAFNOSUPPORT ||
+		 olderrno == EADDRNOTAVAIL || olderrno == ETIMEDOUT
+#if defined(EHOSTDOWN)
+		   || olderrno == EHOSTDOWN
+#endif
+	       ))
+#endif
+	    )
+	    res = TRANS_TRY_CONNECT_AGAIN;
+	else if (olderrno == EWOULDBLOCK || olderrno == EINPROGRESS)
+	    res = TRANS_IN_PROGRESS;
+	else
+	{
+	    PRMSG (2,"SocketINETConnect: Can't connect: errno = %d\n",
+		   olderrno,0, 0);
+
+	    res = TRANS_CONNECT_FAILED;	
+	}
+    } else {
+	res = 0;
+    
+
+	/*
+	 * Sync up the address fields of ciptr.
+	 */
+    
+	if (TRANS(SocketINETGetAddr) (ciptr) < 0)
+	{
+	    PRMSG (1,
+	     "SocketINETConnect: ...SocketINETGetAddr() failed:\n",
+	      0, 0, 0);
+	    res = TRANS_CONNECT_FAILED;
+	}
+
+	else if (TRANS(SocketINETGetPeerAddr) (ciptr) < 0)
+	{
+	    PRMSG (1,
+	      "SocketINETConnect: ...SocketINETGetPeerAddr() failed:\n",
+	      0, 0, 0);
+	    res = TRANS_CONNECT_FAILED;
+	}
+    }
+
+#if defined(IPv6) && defined(AF_INET6)
+   if (haveIPv6 && res != 0) { 
+	addrlist->addr = addrlist->addr->ai_next;
+   }
+#endif
+
+    return res;
+}
+
+#endif /* TCPCONN */
+
+
+
+#ifdef UNIXCONN
+
+/*
+ * Make sure 'host' is really local.
+ */
+
+static int
+UnixHostReallyLocal (char *host)
+
+{
+    char hostnamebuf[256];
+
+#if defined(IPv6) && defined(AF_INET6)
+    if (getaddrinfo == NULL)
+	haveIPv6 = 0;
+#endif
+
+    TRANS(GetHostname) (hostnamebuf, sizeof (hostnamebuf));
+
+    if (strcmp (hostnamebuf, host) == 0)
+    {
+	return (1);
+    }
+#if defined(IPv6) && defined(AF_INET6)
+    else if (haveIPv6)
+    {
+	struct addrinfo *localhostaddr;
+	struct addrinfo *otherhostaddr;
+	struct addrinfo *i, *j;
+	int equiv = 0;
+
+	if (getaddrinfo(hostnamebuf, NULL, NULL, &localhostaddr) != 0)
+	    return 0;
+	if (getaddrinfo(host, NULL, NULL, &otherhostaddr) != 0) {
+	    freeaddrinfo(localhostaddr);
+	    return 0;
+	}
+
+	for (i = localhostaddr; i != NULL && equiv == 0; i = i->ai_next) {
+	    for (j = otherhostaddr; j != NULL && equiv == 0; j = j->ai_next) {
+		if (i->ai_family == j->ai_family) {
+		    if (i->ai_family == AF_INET) {
+			struct sockaddr_in *sinA 
+			  = (struct sockaddr_in *) i->ai_addr;
+			struct sockaddr_in *sinB
+			  = (struct sockaddr_in *) j->ai_addr;
+			struct in_addr *A = &sinA->sin_addr;
+			struct in_addr *B = &sinB->sin_addr;
+
+			if (memcmp(A,B,sizeof(struct in_addr)) == 0) {
+			    equiv = 1;
+			}
+		    } else if (i->ai_family == AF_INET6) {
+			struct sockaddr_in6 *sinA 
+			  = (struct sockaddr_in6 *) i->ai_addr;
+			struct sockaddr_in6 *sinB 
+			  = (struct sockaddr_in6 *) j->ai_addr;
+			struct in6_addr *A = &sinA->sin6_addr;
+			struct in6_addr *B = &sinB->sin6_addr;
+
+			if (memcmp(A,B,sizeof(struct in6_addr)) == 0) {
+			    equiv = 1;
+			}
+		    }
+		}
+	    }
+	}
+	
+	freeaddrinfo(localhostaddr);
+	freeaddrinfo(otherhostaddr);
+	return equiv;
+    }
+#endif
+    else
+    {
+	/*
+	 * A host may have more than one network address.  If any of the
+	 * network addresses of 'host' (specified to the connect call)
+	 * match any of the network addresses of 'hostname' (determined
+	 * by TRANS(GetHostname)), then the two hostnames are equivalent,
+	 * and we know that 'host' is really a local host.
+	 */
+	char specified_local_addr_list[10][4];
+	int scount, equiv, i, j;
+#ifdef XTHREADS_NEEDS_BYNAMEPARAMS
+	_Xgethostbynameparams hparams;
+#endif
+	struct hostent *hostp;
+
+	if ((hostp = _XGethostbyname (host,hparams)) == NULL)
+	    return (0);
+
+	scount = 0;
+	while (hostp->h_addr_list[scount] && scount <= 8)
+	{
+	    /*
+	     * The 2nd call to gethostname() overrides the data
+	     * from the 1st call, so we must save the address list.
+	     */
+
+	    specified_local_addr_list[scount][0] = 
+				hostp->h_addr_list[scount][0];
+	    specified_local_addr_list[scount][1] = 
+				hostp->h_addr_list[scount][1];
+	    specified_local_addr_list[scount][2] = 
+				hostp->h_addr_list[scount][2];
+	    specified_local_addr_list[scount][3] = 
+				hostp->h_addr_list[scount][3];
+	    scount++;
+	}
+	if ((hostp = _XGethostbyname (hostnamebuf,hparams)) == NULL)
+	    return (0);
+
+	equiv = 0;
+	i = 0;
+
+	while (i < scount && !equiv)
+	{
+	    j = 0;
+
+	    while (hostp->h_addr_list[j])
+	    {
+		if ((specified_local_addr_list[i][0] == 
+					hostp->h_addr_list[j][0]) &&
+		    (specified_local_addr_list[i][1] == 
+					hostp->h_addr_list[j][1]) &&
+		    (specified_local_addr_list[i][2] == 
+					hostp->h_addr_list[j][2]) &&
+		    (specified_local_addr_list[i][3] == 
+					hostp->h_addr_list[j][3]))
+		{
+		    /* They're equal, so we're done */
+		    
+		    equiv = 1;
+		    break;
+		}
+
+		j++;
+	    }
+
+	    i++;
+	}
+	return (equiv);
+    }
+}
+
+static int
+TRANS(SocketUNIXConnect) (XtransConnInfo ciptr, char *host, char *port)
+
+{
+    struct sockaddr_un	sockname;
+    int			namelen;
+
+#if defined(hpux) && defined(X11_t)
+    struct sockaddr_un	old_sockname;
+    int			old_namelen;
+#endif
+
+
+    PRMSG (2,"SocketUNIXConnect(%d,%s,%s)\n", ciptr->fd, host, port);
+    
+    /*
+     * Make sure 'host' is really local.  If not, we return failure.
+     * The reason we make this check is because a process may advertise
+     * a "local" network ID for which it can accept connections, but if
+     * a process on a remote machine tries to connect to this network ID,
+     * we know for sure it will fail.
+     */
+
+    if (strcmp (host, "unix") != 0 && !UnixHostReallyLocal (host))
+    {
+	PRMSG (1,
+	   "SocketUNIXConnect: Cannot connect to non-local host %s\n",
+	       host, 0, 0);
+	return TRANS_CONNECT_FAILED;
+    }
+
+
+    /*
+     * Check the port.
+     */
+
+    if (!port || !*port)
+    {
+	PRMSG (1,"SocketUNIXConnect: Missing port specification\n",
+	      0, 0, 0);
+	return TRANS_CONNECT_FAILED;
+    }
+
+    /*
+     * Build the socket name.
+     */
+    
+    sockname.sun_family = AF_UNIX;
+
+    if (set_sun_path(port, UNIX_PATH, sockname.sun_path) != 0) {
+	PRMSG (1, "SocketUNIXConnect: path too long\n", 0, 0, 0);
+	return TRANS_CONNECT_FAILED;
+    }
+
+#if (defined(BSD44SOCKETS) || defined(__UNIXWARE__)) && !defined(Lynx)
+    sockname.sun_len = strlen (sockname.sun_path);
+    namelen = SUN_LEN (&sockname);
+#else
+    namelen = strlen (sockname.sun_path) + sizeof (sockname.sun_family);
+#endif
+
+
+#if defined(hpux) && defined(X11_t)
+    /*
+     * This is gross, but it was in Xlib
+     */
+    old_sockname.sun_family = AF_UNIX;
+    if (set_sun_path(port, OLD_UNIX_PATH, old_sockname.sun_path) != 0) {
+	PRMSG (1, "SocketUNIXConnect: path too long\n", 0, 0, 0);
+	return TRANS_CONNECT_FAILED;
+    }
+    old_namelen = strlen (old_sockname.sun_path) +
+	sizeof (old_sockname.sun_family);
+#endif
+
+
+    /*
+     * Do the connect()
+     */
+
+    if (connect (ciptr->fd, (struct sockaddr *) &sockname, namelen) < 0)
+    {
+	int olderrno = errno;
+	int connected = 0;
+	
+#if defined(hpux) && defined(X11_t)
+	if (olderrno == ENOENT)
+	{
+	    if (connect (ciptr->fd,
+		(struct sockaddr *) &old_sockname, old_namelen) >= 0)
+	    {
+		connected = 1;
+	    }
+	    else
+		olderrno = errno;
+	}
+#endif
+	if (!connected)
+	{
+	    errno = olderrno;
+	    
+	    /*
+	     * If the error was ENOENT, the server may be starting up
+	     * and we should try again.
+	     *
+	     * If the error was EWOULDBLOCK or EINPROGRESS then the socket
+	     * was non-blocking and we should poll using select
+	     *
+	     * If the error was EINTR, the connect was interrupted and we
+	     * should try again.
+	     */
+
+	    if (olderrno == ENOENT || olderrno == EINTR)
+		return TRANS_TRY_CONNECT_AGAIN;
+	    else if (olderrno == EWOULDBLOCK || olderrno == EINPROGRESS)
+		return TRANS_IN_PROGRESS;
+	    else
+	    {
+		PRMSG (2,"SocketUNIXConnect: Can't connect: errno = %d\n",
+		       EGET(),0, 0);
+
+		return TRANS_CONNECT_FAILED;
+	    }
+	}
+    }
+
+    /*
+     * Get the socket name and the peer name from the connect socket,
+     * since this is unix domain.
+     */
+
+    if ((ciptr->addr = (char *) xalloc(namelen)) == NULL ||
+       (ciptr->peeraddr = (char *) xalloc(namelen)) == NULL)
+    {
+        PRMSG (1,
+	"SocketUNIXCreateListener: Can't allocate space for the addr\n",
+	      0, 0, 0);
+        return TRANS_CONNECT_FAILED;
+    }
+
+    ciptr->family = AF_UNIX;
+    ciptr->addrlen = namelen;
+    ciptr->peeraddrlen = namelen;
+    memcpy (ciptr->addr, &sockname, ciptr->addrlen);
+    memcpy (ciptr->peeraddr, &sockname, ciptr->peeraddrlen);
+    
+    return 0;
+}
+
+#endif /* UNIXCONN */
+
+#endif /* TRANS_CLIENT */
+
+
+static int
+TRANS(SocketBytesReadable) (XtransConnInfo ciptr, BytesReadable_t *pend)
+
+{
+    PRMSG (2,"SocketBytesReadable(%p,%d,%p)\n",
+	ciptr, ciptr->fd, pend);
+#if defined(QNX4)
+    *pend = 0L; /* FIONREAD only returns a short. Zero out upper bits */
+#endif
+#ifdef WIN32
+    {
+	int ret = ioctlsocket ((SOCKET) ciptr->fd, FIONREAD, (u_long *) pend);
+	errno = WSAGetLastError();
+	return ret;
+    }
+#else
+#if (defined(i386) && defined(SYSV) && !defined(SCO325)) || (defined(_SEQUENT_) && _SOCKET_VERSION == 1)
+    return ioctl (ciptr->fd, I_NREAD, (char *) pend);
+#else
+#if defined(__UNIXOS2__)
+    return ioctl (ciptr->fd, FIONREAD, (char*) pend, sizeof(int));
+#else
+    return ioctl (ciptr->fd, FIONREAD, (char *) pend);
+#endif /* __UNIXOS2__ */
+#endif /* i386 && SYSV || _SEQUENT_ && _SOCKET_VERSION == 1 */
+#endif /* WIN32 */
+}
+
+
+static int
+TRANS(SocketRead) (XtransConnInfo ciptr, char *buf, int size)
+
+{
+    PRMSG (2,"SocketRead(%d,%p,%d)\n", ciptr->fd, buf, size);
+
+#if defined(WIN32) || defined(__UNIXOS2__)
+    {
+	int ret = recv ((SOCKET)ciptr->fd, buf, size, 0);
+#ifdef WIN32
+	errno = WSAGetLastError();
+#endif
+	return ret;
+    }
+#else
+    return read (ciptr->fd, buf, size);
+#endif /* WIN32 */
+}
+
+
+static int
+TRANS(SocketWrite) (XtransConnInfo ciptr, char *buf, int size)
+
+{
+    PRMSG (2,"SocketWrite(%d,%p,%d)\n", ciptr->fd, buf, size);
+
+#if defined(WIN32) || defined(__UNIXOS2__)
+    {
+	int ret = send ((SOCKET)ciptr->fd, buf, size, 0);
+#ifdef WIN32
+	errno = WSAGetLastError();
+#endif
+	return ret;
+    }
+#else
+    return write (ciptr->fd, buf, size);
+#endif /* WIN32 */
+}
+
+
+static int
+TRANS(SocketReadv) (XtransConnInfo ciptr, struct iovec *buf, int size)
+
+{
+    PRMSG (2,"SocketReadv(%d,%p,%d)\n", ciptr->fd, buf, size);
+
+    return READV (ciptr, buf, size);
+}
+
+
+static int
+TRANS(SocketWritev) (XtransConnInfo ciptr, struct iovec *buf, int size)
+
+{
+    PRMSG (2,"SocketWritev(%d,%p,%d)\n", ciptr->fd, buf, size);
+
+    return WRITEV (ciptr, buf, size);
+}
+
+
+static int
+TRANS(SocketDisconnect) (XtransConnInfo ciptr)
+
+{
+    PRMSG (2,"SocketDisconnect(%p,%d)\n", ciptr, ciptr->fd, 0);
+
+#ifdef WIN32
+    { 
+	int ret = shutdown (ciptr->fd, 2);
+	errno = WSAGetLastError();
+	return ret;
+    }
+#else
+    return shutdown (ciptr->fd, 2); /* disallow further sends and receives */
+#endif
+}
+
+
+#ifdef TCPCONN
+static int
+TRANS(SocketINETClose) (XtransConnInfo ciptr)
+
+{
+    PRMSG (2,"SocketINETClose(%p,%d)\n", ciptr, ciptr->fd, 0);
+
+#ifdef WIN32
+    {
+	int ret = close (ciptr->fd);
+	errno = WSAGetLastError();
+	return ret;
+    }
+#else
+    return close (ciptr->fd);
+#endif
+}
+
+#endif /* TCPCONN */
+
+
+#ifdef UNIXCONN
+static int
+TRANS(SocketUNIXClose) (XtransConnInfo ciptr)
+
+{
+    /*
+     * If this is the server side, then once the socket is closed,
+     * it must be unlinked to completely close it
+     */
+
+    struct sockaddr_un	*sockname = (struct sockaddr_un *) ciptr->addr;
+    int ret;
+
+    PRMSG (2,"SocketUNIXClose(%p,%d)\n", ciptr, ciptr->fd, 0);
+
+    ret = close(ciptr->fd);
+
+    if (ciptr->flags
+       && sockname
+       && sockname->sun_family == AF_UNIX
+       && sockname->sun_path[0])
+    {
+	if (!(ciptr->flags & TRANS_NOUNLINK))
+		unlink (sockname->sun_path);
+    }
+
+    return ret;
+}
+
+static int
+TRANS(SocketUNIXCloseForCloning) (XtransConnInfo ciptr)
+
+{
+    /*
+     * Don't unlink path.
+     */
+
+    int ret;
+
+    PRMSG (2,"SocketUNIXCloseForCloning(%p,%d)\n",
+	ciptr, ciptr->fd, 0);
+
+    ret = close(ciptr->fd);
+
+    return ret;
+}
+
+#endif /* UNIXCONN */
+
+
+#ifdef TCPCONN
+# ifdef TRANS_SERVER
+static char* tcp_nolisten[] = {
+	"inet",
+#if defined(IPv6) && defined(AF_INET6)
+	"inet6",
+#endif
+	NULL
+};
+# endif
+
+Xtransport	TRANS(SocketTCPFuncs) = {
+	/* Socket Interface */
+	"tcp",
+        TRANS_ALIAS,
+#ifdef TRANS_CLIENT
+	TRANS(SocketOpenCOTSClient),
+#endif /* TRANS_CLIENT */
+#ifdef TRANS_SERVER
+	tcp_nolisten,
+	TRANS(SocketOpenCOTSServer),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_CLIENT
+	TRANS(SocketOpenCLTSClient),
+#endif /* TRANS_CLIENT */
+#ifdef TRANS_SERVER
+	TRANS(SocketOpenCLTSServer),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_REOPEN
+	TRANS(SocketReopenCOTSServer),
+	TRANS(SocketReopenCLTSServer),
+#endif
+	TRANS(SocketSetOption),
+#ifdef TRANS_SERVER
+	TRANS(SocketINETCreateListener),
+	NULL,		       			/* ResetListener */
+	TRANS(SocketINETAccept),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_CLIENT
+	TRANS(SocketINETConnect),
+#endif /* TRANS_CLIENT */
+	TRANS(SocketBytesReadable),
+	TRANS(SocketRead),
+	TRANS(SocketWrite),
+	TRANS(SocketReadv),
+	TRANS(SocketWritev),
+	TRANS(SocketDisconnect),
+	TRANS(SocketINETClose),
+	TRANS(SocketINETClose),
+	};
+
+Xtransport	TRANS(SocketINETFuncs) = {
+	/* Socket Interface */
+	"inet",
+	0,
+#ifdef TRANS_CLIENT
+	TRANS(SocketOpenCOTSClient),
+#endif /* TRANS_CLIENT */
+#ifdef TRANS_SERVER
+	NULL,
+	TRANS(SocketOpenCOTSServer),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_CLIENT
+	TRANS(SocketOpenCLTSClient),
+#endif /* TRANS_CLIENT */
+#ifdef TRANS_SERVER
+	TRANS(SocketOpenCLTSServer),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_REOPEN
+	TRANS(SocketReopenCOTSServer),
+	TRANS(SocketReopenCLTSServer),
+#endif
+	TRANS(SocketSetOption),
+#ifdef TRANS_SERVER
+	TRANS(SocketINETCreateListener),
+	NULL,		       			/* ResetListener */
+	TRANS(SocketINETAccept),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_CLIENT
+	TRANS(SocketINETConnect),
+#endif /* TRANS_CLIENT */
+	TRANS(SocketBytesReadable),
+	TRANS(SocketRead),
+	TRANS(SocketWrite),
+	TRANS(SocketReadv),
+	TRANS(SocketWritev),
+	TRANS(SocketDisconnect),
+	TRANS(SocketINETClose),
+	TRANS(SocketINETClose),
+	};
+
+#if defined(IPv6) && defined(AF_INET6)
+Xtransport     TRANS(SocketINET6Funcs) = {
+	/* Socket Interface */
+	"inet6",
+	0,
+#ifdef TRANS_CLIENT
+	TRANS(SocketOpenCOTSClient),
+#endif /* TRANS_CLIENT */
+#ifdef TRANS_SERVER
+	NULL,
+	TRANS(SocketOpenCOTSServer),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_CLIENT
+	TRANS(SocketOpenCLTSClient),
+#endif /* TRANS_CLIENT */
+#ifdef TRANS_SERVER
+	TRANS(SocketOpenCLTSServer),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_REOPEN
+	TRANS(SocketReopenCOTSServer),
+	TRANS(SocketReopenCLTSServer),
+#endif
+	TRANS(SocketSetOption),
+#ifdef TRANS_SERVER
+	TRANS(SocketINETCreateListener),
+	NULL,					/* ResetListener */
+	TRANS(SocketINETAccept),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_CLIENT
+	TRANS(SocketINETConnect),
+#endif /* TRANS_CLIENT */
+	TRANS(SocketBytesReadable),
+	TRANS(SocketRead),
+	TRANS(SocketWrite),
+	TRANS(SocketReadv),
+	TRANS(SocketWritev),
+	TRANS(SocketDisconnect),
+	TRANS(SocketINETClose),
+	TRANS(SocketINETClose),
+	};
+#endif /* IPv6 */
+#endif /* TCPCONN */
+
+#ifdef UNIXCONN
+#if !defined(LOCALCONN)
+Xtransport	TRANS(SocketLocalFuncs) = {
+	/* Socket Interface */
+	"local",
+	0,
+#ifdef TRANS_CLIENT
+	TRANS(SocketOpenCOTSClient),
+#endif /* TRANS_CLIENT */
+#ifdef TRANS_SERVER
+	NULL,
+	TRANS(SocketOpenCOTSServer),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_CLIENT
+	TRANS(SocketOpenCLTSClient),
+#endif /* TRANS_CLIENT */
+#ifdef TRANS_SERVER
+	TRANS(SocketOpenCLTSServer),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_REOPEN
+	TRANS(SocketReopenCOTSServer),
+	TRANS(SocketReopenCLTSServer),
+#endif
+	TRANS(SocketSetOption),
+#ifdef TRANS_SERVER
+	TRANS(SocketUNIXCreateListener),
+	TRANS(SocketUNIXResetListener),
+	TRANS(SocketUNIXAccept),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_CLIENT
+	TRANS(SocketUNIXConnect),
+#endif /* TRANS_CLIENT */
+	TRANS(SocketBytesReadable),
+	TRANS(SocketRead),
+	TRANS(SocketWrite),
+	TRANS(SocketReadv),
+	TRANS(SocketWritev),
+	TRANS(SocketDisconnect),
+	TRANS(SocketUNIXClose),
+	TRANS(SocketUNIXCloseForCloning),
+	};
+#endif /* !LOCALCONN */
+# ifdef TRANS_SERVER
+#  if !defined(LOCALCONN)
+static char* unix_nolisten[] = { "local" , NULL };
+#  endif
+# endif
+	    
+Xtransport	TRANS(SocketUNIXFuncs) = {
+	/* Socket Interface */
+	"unix",
+#if !defined(LOCALCONN)
+        TRANS_ALIAS,
+#else
+	0,
+#endif
+#ifdef TRANS_CLIENT
+	TRANS(SocketOpenCOTSClient),
+#endif /* TRANS_CLIENT */
+#ifdef TRANS_SERVER
+#if !defined(LOCALCONN)
+	unix_nolisten,
+#else
+	NULL,
+#endif
+	TRANS(SocketOpenCOTSServer),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_CLIENT
+	TRANS(SocketOpenCLTSClient),
+#endif /* TRANS_CLIENT */
+#ifdef TRANS_SERVER
+	TRANS(SocketOpenCLTSServer),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_REOPEN
+	TRANS(SocketReopenCOTSServer),
+	TRANS(SocketReopenCLTSServer),
+#endif
+	TRANS(SocketSetOption),
+#ifdef TRANS_SERVER
+	TRANS(SocketUNIXCreateListener),
+	TRANS(SocketUNIXResetListener),
+	TRANS(SocketUNIXAccept),
+#endif /* TRANS_SERVER */
+#ifdef TRANS_CLIENT
+	TRANS(SocketUNIXConnect),
+#endif /* TRANS_CLIENT */
+	TRANS(SocketBytesReadable),
+	TRANS(SocketRead),
+	TRANS(SocketWrite),
+	TRANS(SocketReadv),
+	TRANS(SocketWritev),
+	TRANS(SocketDisconnect),
+	TRANS(SocketUNIXClose),
+	TRANS(SocketUNIXCloseForCloning),
+	};
+
+#endif /* UNIXCONN */