Hi,
i worked on it :-)
The good thing is http works not with IPv4 and IPv6 sites if commpiled 
with IPv6.

3 things have to be done now:

1. make command line siwtch to change the default 4/6
2. if IPv6 enabled and IPv4 address found make an IPv6 address from whem 
( clean caching )
3. Make the ftp protocol part.


I think 1+2 i can handle.

Cu Thomas Lußnig
Only in wget-1.8.1_ipv6/src: .libs
Only in wget-1.8.1_ipv6/src: Makefile
Only in wget-1.8.1_ipv6/src: cmpt.o
Only in wget-1.8.1_ipv6/src: config.h
diff -ubr wget-1.8.1/src/connect.c wget-1.8.1_ipv6/src/connect.c
--- wget-1.8.1/src/connect.c    Tue Nov 27 14:55:40 2001
+++ wget-1.8.1_ipv6/src/connect.c       Tue Jan 15 11:17:18 2002
@@ -55,6 +55,8 @@
 extern int errno;
 #endif
 
+#define IPV6
+
 /* Variables shared by bindport and acceptport: */
 static int msock = -1;
 static struct sockaddr *addr;
@@ -78,14 +80,11 @@
 int
 connect_to_one (const unsigned char *addr, unsigned short port, int silent)
 {
-  struct sockaddr_in sock_name;
+  SOCKADDR_IN sock_name;
   int sock, save_errno;
-
+  int sockaddr_len=get_socklen(ip_default_family);
   /* Set port and protocol */
-  sock_name.sin_family = AF_INET;
-  sock_name.sin_port = htons (port);
-  memcpy ((unsigned char *)&sock_name.sin_addr, addr, 4);
-
+  set_ip_address(ip_default_family,port,addr,(struct sockaddr *)&sock_name);
   if (!silent)
     {
       char *pretty_addr = pretty_print_address (addr);
@@ -99,15 +98,14 @@
     }
 
   /* Make an internet socket, stream type.  */
-  sock = socket (AF_INET, SOCK_STREAM, 0);
+  sock = socket (ip_default_family, SOCK_STREAM, 0);
   if (sock < 0)
     goto out;
 
   if (opt.bind_address)
     {
       /* Bind the client side to the requested address. */
-      if (bind (sock, (struct sockaddr *)opt.bind_address,
-               sizeof (*opt.bind_address)))
+      if (bind (sock, (struct sockaddr *)opt.bind_address,sockaddr_len))
        {
          close (sock);
          sock = -1;
@@ -116,7 +114,7 @@
     }
 
   /* Connect the socket to the remote host.  */
-  if (connect (sock, (struct sockaddr *)&sock_name, sizeof (sock_name)) < 0)
+  if (connect (sock, (struct sockaddr *)&sock_name,sockaddr_len) < 0)
     {
       close (sock);
       sock = -1;
@@ -151,7 +149,7 @@
   address_list_get_bounds (al, &start, &end);
   for (i = start; i < end; i++)
     {
-      unsigned char addr[4];
+      ip_address addr;
       int sock;
       address_list_copy_one (al, i, addr);
 
@@ -210,11 +208,13 @@
 bindport (unsigned short *port)
 {
   int optval = 1;
-  static struct sockaddr_in srv;
+  static SOCKADDR_IN srv={0};
+  int sockaddr_len=get_socklen(ip_default_family);
+  
 
   msock = -1;
   addr = (struct sockaddr *) &srv;
-  if ((msock = socket (AF_INET, SOCK_STREAM, 0)) < 0)
+  if ((msock = socket (ip_default_family, SOCK_STREAM, 0)) < 0)
     return CONSOCKERR;
   if (setsockopt (msock, SOL_SOCKET, SO_REUSEADDR,
                  (char *)&optval, sizeof (optval)) < 0)
@@ -222,14 +222,13 @@
 
   if (opt.bind_address == NULL)
     {
-      srv.sin_family = AF_INET;
-      srv.sin_addr.s_addr = htonl (INADDR_ANY);
+      set_ip_address(ip_default_family,htons(*port),NULL,(struct sockaddr*)&srv);
     }
   else
     srv = *opt.bind_address;
 
-  srv.sin_port = htons (*port);
-  if (bind (msock, addr, sizeof (struct sockaddr_in)) < 0)
+  set_port(*port,(struct sockaddr*)&srv);
+  if (bind (msock, addr, sockaddr_len) < 0)
     {
       CLOSE (msock);
       msock = -1;
@@ -241,14 +240,14 @@
       /* #### addrlen should be a 32-bit type, which int is not
          guaranteed to be.  Oh, and don't try to make it a size_t,
          because that can be 64-bit.  */
-      int addrlen = sizeof (struct sockaddr_in);
+      int addrlen = sockaddr_len;
       if (getsockname (msock, addr, &addrlen) < 0)
        {
          CLOSE (msock);
          msock = -1;
          return CONPORTERR;
        }
-      *port = ntohs (srv.sin_port);
+      *port=get_port((struct sockaddr*)&srv);
     }
   if (listen (msock, 1) < 0)
     {
@@ -292,7 +291,7 @@
 uerr_t
 acceptport (int *sock)
 {
-  int addrlen = sizeof (struct sockaddr_in);
+  int addrlen = get_socklen(ip_default_family);
 
 #ifdef HAVE_SELECT
   if (select_fd (msock, opt.timeout, 0) <= 0)
@@ -322,8 +321,8 @@
 unsigned char *
 conaddr (int fd)
 {
-  static unsigned char res[4];
-  struct sockaddr_in mysrv;
+  static ip_address res;
+  SOCKADDR_IN  mysrv;
   struct sockaddr *myaddr;
   int addrlen = sizeof (mysrv);        /* see bindport() for discussion of
                                    using `int' here. */
@@ -331,7 +330,11 @@
   myaddr = (struct sockaddr *) (&mysrv);
   if (getsockname (fd, myaddr, (int *)&addrlen) < 0)
     return NULL;
-  memcpy (res, &mysrv.sin_addr, 4);
+#ifdef IPV6
+  memcpy (res, &mysrv.sin6_addr, sizeof(ip_address));
+#else
+  memcpy (res, &mysrv.sin_addr, sizeof(ip_address));
+#endif
   return res;
 }
 
Only in wget-1.8.1_ipv6/src: connect.o
Only in wget-1.8.1_ipv6/src: cookies.o
Only in wget-1.8.1_ipv6/src: err
Only in wget-1.8.1_ipv6/src: fnmatch.o
Only in wget-1.8.1_ipv6/src: ftp-basic.o
Only in wget-1.8.1_ipv6/src: ftp-ls.o
Only in wget-1.8.1_ipv6/src: ftp-opie.o
Only in wget-1.8.1_ipv6/src: ftp.o
Only in wget-1.8.1_ipv6/src: gen-md5.o
Only in wget-1.8.1_ipv6/src: gen_sslfunc.o
Only in wget-1.8.1_ipv6/src: hash.o
Only in wget-1.8.1_ipv6/src: headers.o
diff -ubr wget-1.8.1/src/host.c wget-1.8.1_ipv6/src/host.c
--- wget-1.8.1/src/host.c       Tue Dec 11 08:32:57 2001
+++ wget-1.8.1_ipv6/src/host.c  Tue Jan 15 11:18:12 2002
@@ -18,6 +18,7 @@
 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 #include <config.h>
+#include <netdb.h>
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -65,8 +66,13 @@
 # endif
 #endif
 
-/* An IPv4 address is simply a 4-byte quantity. */
-typedef unsigned char ipv4_address[4];
+#ifdef IPV6
+int     ip_default_family = AF_INET6;
+#else
+int     ip_default_family = AF_INET;
+#endif
+
+
 
 /* Mapping between known hosts and to lists of their addresses. */
 
@@ -77,7 +83,8 @@
 
 struct address_list {
   int count;                   /* number of adrresses */
-  ipv4_address *addresses;     /* pointer to the string of addresses */
+  int ip_family;
+  ip_address *addresses;       /* pointer to the string of addresses */
 
   int faulty;                  /* number of addresses known not to
                                   work. */
@@ -85,6 +92,105 @@
                                   not. */
 };
 
+void
+set_ip_address(int ip_family,unsigned short port,const unsigned char*addr,struct 
+sockaddr *sock_name)
+{
+  if(ip_family==AF_INET) 
+    {
+      struct sockaddr_in *ip_sock=(struct sockaddr_in *)sock_name;
+      ip_sock->sin_family=ip_family;
+      ip_sock->sin_port=htons(port);
+      if(addr==NULL) memset((unsigned char*)&ip_sock->sin_addr,0   ,4);
+      else          memcpy((unsigned char*)&ip_sock->sin_addr,addr,4);
+    }
+#ifdef IPV6
+  if(ip_family==AF_INET6) 
+    {
+      struct sockaddr_in6 *ip_sock=(struct sockaddr_in6*)sock_name;
+      ip_sock->sin6_family=ip_family;
+      ip_sock->sin6_port=htons(port);
+      if(addr==NULL) memset(ip_sock->sin6_addr.in6_u.u6_addr8,0   ,4);
+      else          memcpy(ip_sock->sin6_addr.in6_u.u6_addr8,addr,4);
+    }
+#endif  
+}
+void set_port(unsigned short port,struct sockaddr *sock_name)
+{
+  if(sock_name->sa_family==AF_INET)
+    {
+      struct sockaddr_in *ip_sock=(struct sockaddr_in *)&sock_name;
+      ip_sock->sin_port=htons(port);
+    }
+#ifdef IPV6
+  if(sock_name->sa_family==AF_INET6)
+    {
+      struct sockaddr_in6 *ip_sock=(struct sockaddr_in6*)&sock_name;
+      ip_sock->sin6_port=htons(port);
+    }
+#endif
+}
+void set_family(int ip_family,struct sockaddr *sock_name)
+{
+  if(ip_family==AF_INET)
+    {
+      struct sockaddr_in *ip_sock=(struct sockaddr_in *)&sock_name;
+      ip_sock->sin_family=ip_family;
+    }
+#ifdef IPV6
+  if(ip_family==AF_INET6)
+    {
+      struct sockaddr_in6 *ip_sock=(struct sockaddr_in6*)&sock_name;
+      ip_sock->sin6_family=ip_family;
+    }
+#endif
+}
+
+const unsigned char *get_addr(struct sockaddr *sock_name)
+{ 
+  if(sock_name->sa_family==AF_INET)
+    {
+      struct sockaddr_in *ip_sock=(struct sockaddr_in *)&sock_name;
+      return (unsigned char*)&ip_sock->sin_addr;
+    }
+#ifdef IPV6
+  if(sock_name->sa_family==AF_INET6)
+    {
+      struct sockaddr_in6 *ip_sock=(struct sockaddr_in6*)&sock_name;
+      return ip_sock->sin6_addr.in6_u.u6_addr8;
+    }
+#endif
+  return NULL;
+}
+
+unsigned short get_port(struct sockaddr *sock_name)
+{
+  if(sock_name->sa_family==AF_INET)
+    {
+      struct sockaddr_in *ip_sock=(struct sockaddr_in *)&sock_name;
+      return ntohs(ip_sock->sin_port);
+    }
+#ifdef IPV6
+  if(sock_name->sa_family==AF_INET6)
+    {
+      struct sockaddr_in6 *ip_sock=(struct sockaddr_in6*)&sock_name;
+      return ntohs(ip_sock->sin6_port);
+    }
+#endif
+  return -1;
+}
+int get_socklen(int ip_family) 
+{
+  if(ip_family==AF_INET) return sizeof(struct sockaddr_in);
+#ifdef IPV6
+  if(ip_family==AF_INET6) return sizeof(struct sockaddr_in);
+#endif
+  return 0;
+}
+
+
+
+
+
 /* Get the bounds of the address list.  */
 
 void
@@ -101,7 +207,7 @@
                       unsigned char *ip_store)
 {
   assert (index >= al->faulty && index < al->count);
-  memcpy (ip_store, al->addresses + index, sizeof (ipv4_address));
+  memcpy (ip_store, al->addresses + index, sizeof (ip_address));
 }
 
 /* Check whether two address lists have all their IPs in common.  */
@@ -114,7 +220,7 @@
   if (al1->count != al2->count)
     return 0;
   return 0 == memcmp (al1->addresses, al2->addresses,
-                     al1->count * sizeof (ipv4_address));
+                     al1->count * sizeof (ip_address));
 }
 
 /* Mark the INDEXth element of AL as faulty, so that the next time
@@ -152,11 +258,11 @@
   assert (count > 0);
   al->count     = count;
   al->faulty    = 0;
-  al->addresses = xmalloc (count * sizeof (ipv4_address));
+  al->addresses = xmalloc (count * sizeof (ip_address));
   al->refcount  = 1;
 
   for (i = 0; i < count; i++)
-    memcpy (al->addresses + i, h_addr_list[i], sizeof (ipv4_address));
+    memcpy (al->addresses + i, h_addr_list[i], sizeof (ip_address));
 
   return al;
 }
@@ -169,9 +275,9 @@
   struct address_list *al = xmalloc (sizeof (struct address_list));
   al->count     = 1;
   al->faulty    = 0;
-  al->addresses = xmalloc (sizeof (ipv4_address));
+  al->addresses = xmalloc (sizeof (ip_address));
   al->refcount  = 1;
-  memcpy (al->addresses, addr, sizeof (ipv4_address));
+  memcpy (al->addresses, addr, sizeof (ip_address));
 
   return al;
 }
@@ -233,14 +339,20 @@
 lookup_host (const char *host, int silent)
 {
   struct address_list *al = NULL;
-  unsigned long addr;
+  ip_address addr;
   struct hostent *hptr;
 
-  /* If the address is of the form d.d.d.d, no further lookup is
-     needed.  */
-  addr = (unsigned long)inet_addr (host);
-  if ((int)addr != -1)
+  /* If the address is of the form that if valid for <family>, 
+     no further lookup is needed.  */
+#ifdef IPV6
+  if(0>=inet_pton(ip_default_family,host,addr))
     {
+#else
+  long tmp_ipv4=(long)inet_addr (host);
+  if(int(tmp_ipv4)!=-1)
+    {
+      memcpy(addr,&tmp_ipv4,4);
+#endif
       /* ADDR is defined to be in network byte order, which is what
         this returns, so we can just copy it to STORE_IP.  However,
         on big endian 64-bit architectures the value will be stored
@@ -248,15 +360,13 @@
         we copy the correct four bytes.  */
       int offset;
 #ifdef WORDS_BIGENDIAN
-      offset = sizeof (unsigned long) - sizeof (ipv4_address);
+      offset = sizeof (unsigned long) - sizeof (ip_address);
 #else
       offset = 0;
 #endif
       return address_list_new_one ((char *)&addr + offset);
     }
 
-  /* By now we know that the host name we got is not of the form
-     d.d.d.d.  Try to find it in our cache of host names.  */
   if (host_name_addresses_map)
     al = hash_table_get (host_name_addresses_map, host);
 
@@ -270,8 +380,8 @@
   if (!silent)
     logprintf (LOG_VERBOSE, _("Resolving %s... "), host);
 
-  /* Look up the host using gethostbyname().  */
-  hptr = gethostbyname (host);
+  /* Look up the host using getipnodebyname().  */
+  hptr = gethostbyname2(host, ip_default_family);
   if (!hptr)
     {
       if (!silent)
diff -ubr wget-1.8.1/src/host.h wget-1.8.1_ipv6/src/host.h
--- wget-1.8.1/src/host.h       Tue Dec 11 08:32:58 2001
+++ wget-1.8.1_ipv6/src/host.h  Tue Jan 15 11:17:10 2002
@@ -19,6 +19,7 @@
 
 #ifndef HOST_H
 #define HOST_H
+#include <netdb.h>
 
 struct url;
 struct address_list;
@@ -43,5 +44,31 @@
 int sufmatch PARAMS ((const char **, const char *));
 
 void host_cleanup PARAMS ((void));
+void set_ip_address(int ip_family,unsigned short port,
+               const unsigned char*addr,struct sockaddr *sock_name);
+void set_port  (unsigned short port,struct sockaddr *sock_name);       
+void set_family(int ip_family,struct sockaddr *sock_name);     
+
+const unsigned char *get_addr(struct sockaddr *sock_name);
+unsigned short       get_port(struct sockaddr *sock_name);
+#define IPV6
+/*
+       IPv6 support added by Thomas Lussnig <[EMAIL PROTECTED]>
+       Date: 15.01.2001 02:36:05
+       If there are mistakes please inform me, but i will not work till the
+       morning on it.
+*/
+
+#ifdef IPV6
+/* An IPv6 address is simply a 16-byte quantity. */
+typedef unsigned char ip_address[16];
+typedef struct sockaddr_in6    SOCKADDR_IN;
+#else
+/* An IPv4 address is simply a 4-byte quantity. */
+typedef unsigned char ip_address[4];
+typedef struct sockaddr_in     SOCKADDR_IN;
+#endif
+extern int     ip_default_family;      /* defined in host.c */
+
 
 #endif /* HOST_H */
Only in wget-1.8.1_ipv6/src: host.o
Only in wget-1.8.1_ipv6/src: html-parse.o
Only in wget-1.8.1_ipv6/src: html-url.o
Only in wget-1.8.1_ipv6/src: http.o
diff -ubr wget-1.8.1/src/init.c wget-1.8.1_ipv6/src/init.c
--- wget-1.8.1/src/init.c       Thu Dec 13 19:19:03 2001
+++ wget-1.8.1_ipv6/src/init.c  Tue Jan 15 11:18:29 2002
@@ -526,8 +526,8 @@
 cmd_address (const char *com, const char *val, void *closure)
 {
   struct address_list *al;
-  struct sockaddr_in sin;
-  struct sockaddr_in **target = (struct sockaddr_in **)closure;
+  SOCKADDR_IN sin;
+  SOCKADDR_IN **target = (SOCKADDR_IN **)closure;
 
   memset (&sin, '\0', sizeof (sin));
 
@@ -538,11 +538,10 @@
               exec_name, com, val);
       return 0;
     }
-  address_list_copy_one (al, 0, (unsigned char *)&sin.sin_addr);
+  set_family(ip_default_family,  (struct sockaddr*)&sin);
+  set_port  (0,(struct sockaddr*)&sin);
+  address_list_copy_one(al, 0,get_addr((struct sockaddr*)&sin));
   address_list_release (al);
-
-  sin.sin_family = AF_INET;
-  sin.sin_port = 0;
 
   FREE_MAYBE (*target);
 
Only in wget-1.8.1_ipv6/src: init.o
Only in wget-1.8.1_ipv6/src: log.o
Only in wget-1.8.1_ipv6/src: main.o
Only in wget-1.8.1_ipv6/src: netrc.o
diff -ubr wget-1.8.1/src/options.h wget-1.8.1_ipv6/src/options.h
--- wget-1.8.1/src/options.h    Fri Nov 30 07:39:08 2001
+++ wget-1.8.1_ipv6/src/options.h       Tue Jan 15 01:05:44 2002
@@ -19,6 +19,7 @@
 
 /* Needed for FDP.  */
 #include <stdio.h>
+#include "host.h"
 
 struct options
 {
@@ -153,7 +154,7 @@
   int page_requisites;         /* Whether we need to download all files
                                   necessary to display a page properly. */
 
-  struct sockaddr_in *bind_address; /* What local IP address to bind to. */
+  SOCKADDR_IN *bind_address;   /* What local IP address to bind to. */
 
 #ifdef HAVE_SSL
   char *sslcertfile;           /* external client cert to use. */
Only in wget-1.8.1_ipv6/src: progress.o
Only in wget-1.8.1_ipv6/src: rbuf.o
Only in wget-1.8.1_ipv6/src: recur.o
Only in wget-1.8.1_ipv6/src: res.o
Only in wget-1.8.1_ipv6/src: retr.o
Only in wget-1.8.1_ipv6/src: safe-ctype.o
Only in wget-1.8.1_ipv6/src: snprintf.o
Only in wget-1.8.1_ipv6/src: url.o
Only in wget-1.8.1_ipv6/src: utils.o
Only in wget-1.8.1_ipv6/src: version.o
Only in wget-1.8.1_ipv6/src: wget

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