c# - Generate IP which lie in between start and end values of IPv6 -

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i needed generate ip(s) lie in between given start , end ip in case of ipv6.

for example start ip 2001:db8:85a3:42:1000:8a2e:370:7334 , end ip 2001:db8:85a3:42:1000:8a2e:370:7336.

i need ip lie in between.

regards

you could:

public static ienumerable<ipaddress> fromto(ipaddress from, ipaddress to) {     if (from == null || == null)     {         throw new argumentnullexception(from == null ? "from" : "to");     }      if (from.addressfamily != to.addressfamily)     {         throw new argumentexception("from/to");     }      long scopeid;      // scopeid can used ipv6     if (from.addressfamily == addressfamily.internetworkv6)     {         if (from.scopeid != to.scopeid)         {             throw new argumentexception("from/to");         }          scopeid = from.scopeid;     }     else     {         scopeid = 0;     }      byte[] bytesfrom = from.getaddressbytes();     byte[] bytesto = to.getaddressbytes();      while (true)     {         int cmp = compare(bytesfrom, bytesto);          if (cmp > 0)         {             break;         }          if (scopeid != 0)         {             // constructor can used ipv6             yield return new ipaddress(bytesfrom, scopeid);         }         else         {             yield return new ipaddress(bytesfrom);         }          // second check handle case 255.255.255.255-255.255.255.255         if (cmp == 0)         {             break;         }          increment(bytesfrom);     } }  private static int compare(byte[] x, byte[] y) {     (int = 0; < x.length; i++)     {         int ret = x[i].compareto(y[i]);          if (ret != 0)         {             return ret;         }     }      return 0; }  private static void increment(byte[] x) {     (int = x.length - 1; >= 0; i--)     {         if (x[i] != 0xff)         {             x[i]++;             return;         }          x[i] = 0;     } }

and then:

var addr1 = ipaddress.parse("2001:db8:85a3:42:1000:8a2e:370:7334"); var addr2 = ipaddress.parse("2001:db8:85a3:42:1000:8a2e:371:7336");  foreach (ipaddress addr in fromto(addr1, addr2)) {     console.writeline(addr); }

note that, written, code compatible both ipv4, ipv6 , ipv6 scope id (like 2001:db8:85a3:42:1000:8a2e:370:7334%100)


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