From: plugwash <plugwash@p10link.net>
Date: Mon, 31 Mar 2008 01:26:50 +0000 (+0000)
Subject: * add multiip support to dnsasync
X-Git-Url: http://www.lcore.org/git/lcore.git/commitdiff_plain/d53fe26eaac895d1e7a0ba2b2b8965cf77932de8?hp=baf753e54d73673524de916757e66ef8c485bc0d

* add multiip support to dnsasync


git-svn-id: file:///svnroot/lcore/trunk@13 b1de8a11-f9be-4011-bde0-cc7ace90066a
---

diff --git a/Makefile b/Makefile
index 2ac49d3..4bf4bdd 100755
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 all: lcoretest
 
 lcoretest: *.pas *.inc lcoretest.dpr
-	fpc -Sd -dipv6 lcoretest.dpr
+	fpc -Sd -gl -dipv6 lcoretest.dpr
 	
 clean:
 	-rm *.o
diff --git a/binipstuff.pas b/binipstuff.pas
index 59d123b..a1433fc 100755
--- a/binipstuff.pas
+++ b/binipstuff.pas
@@ -141,6 +141,8 @@ function comparebinip(const ip1,ip2:tbinip):boolean;
 procedure maskbits(var binip:tbinip;bits:integer);
 function comparebinipmask(ip1,ip2:tbinip;bits:integer):boolean;
 
+procedure addipsoffamily(var l:tbiniplist;const l2:tbiniplist;family:integer);
+
 {deprecated}
 function longip(s:string):longint;
 
@@ -565,7 +567,7 @@ end;
 
 procedure biniplist_addlist;
 begin
-  l := l + l2;
+  l := l + copy(l2,biniplist_prefixlen+1,maxlongint);
 end;
 
 function biniplist_tostr(const l:tbiniplist):string;
@@ -593,4 +595,16 @@ begin
   result := true;
 end;
 
+procedure addipsoffamily(var l:tbiniplist;const l2:tbiniplist;family:integer);
+var
+  a:integer;
+  biniptemp:tbinip;
+begin
+  for a := biniplist_getcount(l2)-1 downto 0 do begin
+    biniptemp := biniplist_get(l2,a);
+    if (biniptemp.family = family) then biniplist_add(l,biniptemp);
+  end;
+end;
+
+
 end.
diff --git a/dnsasync.pas b/dnsasync.pas
index 0a32459..7a10bbf 100755
--- a/dnsasync.pas
+++ b/dnsasync.pas
@@ -17,8 +17,11 @@ uses
   lsocket,lcore,
   classes,binipstuff,dnscore,btime;
 
+const
+  numsock=1{$ifdef ipv6}+1{$endif};
 
 type
+
   //after completion or cancelation a dnswinasync may be reused
   tdnsasync=class(tcomponent)
 
@@ -26,26 +29,26 @@ type
     //made a load of stuff private that does not appear to be part of the main
     //public interface. If you make any of it public again please consider the
     //consequences when using windows dns. --plugwash.
-    sock:twsocket;
-
-    sockopen:boolean;
-
+    sockets: array[0..numsock-1] of tlsocket;
 
-    state:tdnsstate;
+    states: array[0..numsock-1] of tdnsstate;
 
-    dnsserverid:integer;
+    dnsserverids : array[0..numsock-1] of integer;
     startts:double;
     {$ifdef win32}
       dwas : tdnswinasync;
     {$endif}
 
-
-    procedure asyncprocess;
+    numsockused : integer;
+    fresultlist : tbiniplist;
+    requestaf : integer;
+    procedure asyncprocess(socketno:integer);
     procedure receivehandler(sender:tobject;error:word);
-    function sendquery(const packet:tdnspacket;len:integer):boolean;
+    function sendquery(socketno:integer;const packet:tdnspacket;len:integer):boolean;
     {$ifdef win32}
       procedure winrequestdone(sender:tobject;error:word);
     {$endif}
+
   public
     onrequestdone:tsocketevent;
 
@@ -55,6 +58,8 @@ type
     //and special uses.
     addr,port:string;
 
+    overrideaf : integer;
+
     //A family value of AF_INET6 will give only
     //ipv6 results. Any other value will give ipv4 results in preference and ipv6
     //results if ipv4 results are not available;
@@ -63,6 +68,7 @@ type
     procedure cancel;//cancel an outstanding dns request
     function dnsresult:string; //get result of dnslookup as a string
     procedure dnsresultbin(var binip:tbinip); //get result of dnslookup as a tbinip
+    property dnsresultlist : tbiniplist read fresultlist;
     procedure forwardlookup(const name:string); //start forward lookup,
                                                 //preffering ipv4
     procedure reverselookup(const binip:tbinip); //start reverse lookup
@@ -79,78 +85,150 @@ uses sysutils;
 constructor tdnsasync.create;
 begin
   inherited create(aowner);
-  dnsserverid := -1;
-  sock := twsocket.create(self);
+  dnsserverids[0] := -1;
+  sockets[0] := twsocket.create(self);
+  sockets[0].tag := 0;
+  {$ifdef ipv6}
+    dnsserverids[1] := -1;
+    sockets[1] := twsocket.Create(self);
+    sockets[1].tag := 1;
+  {$endif}
 end;
 
 destructor tdnsasync.destroy;
+var
+  socketno : integer;
 begin
-  if dnsserverid >= 0 then begin
-    reportlag(dnsserverid,-1);
-    dnsserverid := -1;
+  for socketno := 0 to numsock -1 do begin
+    if dnsserverids[socketno] >= 0 then begin
+      reportlag(dnsserverids[socketno],-1);
+      dnsserverids[socketno] := -1;
+    end;
+    sockets[socketno].release;
+    setstate_request_init('',states[socketno]);
   end;
-  sock.release;
-  setstate_request_init('',state);
   inherited destroy;
 end;
 
-procedure tdnsasync.receivehandler;
+procedure tdnsasync.receivehandler(sender:tobject;error:word);
+var
+  socketno : integer;
 begin
-  if dnsserverid >= 0 then begin
-    reportlag(dnsserverid,trunc((unixtimefloat-startts)*1000));
-    dnsserverid := -1;
+  socketno := tlsocket(sender).tag;
+  //writeln('got a reply on socket number ',socketno);
+  fillchar(states[socketno].recvpacket,sizeof(states[socketno].recvpacket),0);
+  states[socketno].recvpacketlen := twsocket(sender).Receive(@(states[socketno].recvpacket), SizeOf(states[socketno].recvpacket));
+  states[socketno].parsepacket := true;
+  if states[socketno].resultaction <> action_done then begin
+    //we ignore packets that come after we are done
+    if dnsserverids[socketno] >= 0 then begin
+      reportlag(dnsserverids[socketno],trunc((unixtimefloat-startts)*1000));
+      dnsserverids[socketno] := -1;
+    end;
+  {  writeln('received reply');}
+
+    asyncprocess(socketno);
+    //writeln('processed it');
+  end else begin
+    //writeln('ignored it because request is done');
   end;
-{  writeln('received reply');}
-  fillchar(state.recvpacket,sizeof(state.recvpacket),0);
-  state.recvpacketlen := twsocket(sender).Receive(@state.recvpacket, SizeOf(state.recvpacket));
-  state.parsepacket := true;
-  asyncprocess;
 end;
 
-function tdnsasync.sendquery;
+function tdnsasync.sendquery(socketno:integer;const packet:tdnspacket;len:integer):boolean;
+var
+  destination : string;
+  inaddr : tinetsockaddrv;
 begin
 {  writeln('sendquery ',decodename(state.packet,state.packetlen,12,0,a),' ',state.requesttype);}
+  //writeln('trying to send query on socket number ',socketno);
   result := false;
   if len = 0 then exit; {no packet}
-  if not sockopen then begin
-    if addr <> '' then sock.addr := addr else sock.addr := getcurrentsystemnameserver(dnsserverid);//getunixnameservercached;
+  if sockets[socketno].state <> wsconnected then begin
     startts := unixtimefloat;
     if port = '' then port := '53';
-    sock.port := port;
-    sock.Proto := 'udp';
-    sock.ondataavailable := receivehandler;
+    sockets[socketno].Proto := 'udp';
+    sockets[socketno].ondataavailable := receivehandler;
     try
-      sock.connect;
+      sockets[socketno].listen;
     except
-      on e:exception do begin
-        //writeln('exception '+e.message);
-        exit;
-      end;
+      result := false;
+      exit;
     end;
-    sockopen := true;
+
+  end;
+  if addr <> '' then begin
+    dnsserverids[socketno] := -1;
+    destination := addr
+  end else begin
+    destination := getcurrentsystemnameserver(dnsserverids[socketno]);
   end;
-  sock.send(@packet,len);
+  makeinaddrv(ipstrtobinf(destination),port,inaddr);
+  sockets[socketno].sendto(inaddr,sizeof(inaddr), @packet,len);
   result := true;
+
+
 end;
 
-procedure tdnsasync.asyncprocess;
+procedure tdnsasync.asyncprocess(socketno:integer);
 begin
-  state_process(state);
-  case state.resultaction of
+  state_process(states[socketno]);
+  case states[socketno].resultaction of
     action_ignore: begin {do nothing} end;
     action_done: begin
-      onrequestdone(self,0);
+      {$ifdef ipv6}
+      if (numsockused = 1) or (states[socketno xor 1].resultaction=action_done) then
+      //if using two sockets we need to wait until both sockets are in the done
+      //state before firing the event
+      {$endif}
+      begin
+        fresultlist := biniplist_new;
+        if (numsockused = 1) then begin
+          //writeln('processing for one state');
+          biniplist_addlist(fresultlist,states[0].resultlist);
+        {$ifdef ipv6}
+        end else if (requestaf = useaf_preferv6) then begin
+          //writeln('processing for two states, ipv6 preference');
+          //writeln('merging lists '+biniplist_tostr(states[1].resultlist)+' and '+biniplist_tostr(states[0].resultlist));
+          biniplist_addlist(fresultlist,states[1].resultlist);
+          biniplist_addlist(fresultlist,states[0].resultlist);
+        end else begin
+          //writeln('processing for two states, ipv4 preference');
+          biniplist_addlist(fresultlist,states[0].resultlist);
+          biniplist_addlist(fresultlist,states[1].resultlist);
+        {$endif}
+        end;
+        //writeln(biniplist_tostr(fresultlist));
+        onrequestdone(self,0);
+      end;
     end;
     action_sendquery:begin
-      sendquery(state.sendpacket,state.sendpacketlen);
+      sendquery(socketno,states[socketno].sendpacket,states[socketno].sendpacketlen);
     end;
   end;
 end;
 
 procedure tdnsasync.forwardlookup;
+var
+  bip : tbinip;
+  i : integer;
 begin
 
-  ipstrtobin(name,state.resultbin);
+  ipstrtobin(name,bip);
+
+  if bip.family <> 0 then begin
+    // it was an IP address
+    fresultlist := biniplist_new;
+    biniplist_add(fresultlist,bip);
+    onrequestdone(self,0);
+    exit;
+  end;
+
+  if overrideaf = useaf_default then begin
+    {$ifdef linux}{$ifdef ipv6}initpreferredmode;{$endif}{$endif}
+    requestaf := useaf;
+  end else begin
+    requestaf := overrideaf;
+  end;
 
   {$ifdef win32}
     if usewindns or (addr = '') then begin
@@ -165,15 +243,22 @@ begin
     end;
   {$endif}
 
-
-  if state.resultbin.family <> 0 then begin
-    onrequestdone(self,0);
-    exit;
+  numsockused := 0;
+  fresultlist := biniplist_new;
+  if (requestaf <> useaf_v6) then begin
+    setstate_forward(name,states[numsockused],af_inet);
+    inc(numsockused);
   end;
 
-
-  setstate_forward(name,state,forwardfamily);
-  asyncprocess;
+  {$ifdef ipv6}
+    if (requestaf <> useaf_v4) then begin
+      setstate_forward(name,states[numsockused],af_inet6);
+      inc(numsockused);
+    end;
+  {$endif}
+  for i := 0 to numsockused-1 do begin
+    asyncprocess(i);
+  end;
 
 end;
 
@@ -189,42 +274,47 @@ begin
     end;
   {$endif}
 
-  setstate_reverse(binip,state);
-  asyncprocess;
+  setstate_reverse(binip,states[0]);
+  numsockused := 1;
+  asyncprocess(0);
 end;
 
 function tdnsasync.dnsresult;
 begin
-  if state.resultstr <> '' then result := state.resultstr else begin
-    result := ipbintostr(state.resultbin);
+  if states[0].resultstr <> '' then result := states[0].resultstr else begin
+    result := ipbintostr(biniplist_get(fresultlist,0));
   end;
 end;
 
 procedure tdnsasync.dnsresultbin(var binip:tbinip);
 begin
-  move(state.resultbin,binip,sizeof(binip));
+  binip := biniplist_get(fresultlist,0);
 end;
 
 procedure tdnsasync.cancel;
+var
+  socketno : integer;
 begin
   {$ifdef win32}
     if assigned(dwas) then begin
       dwas.release;
       dwas := nil;
-    end else 
+    end else
   {$endif}
   begin
+    for socketno := 0 to numsock-1 do begin
+      reportlag(dnsserverids[socketno],-1);
+      dnsserverids[socketno] := -1;
 
-    if dnsserverid >= 0 then begin
-      reportlag(dnsserverid,-1);
-      dnsserverid := -1;
-    end;
-    if sockopen then begin
-      sock.close;
-      sockopen := false;
+      sockets[socketno].close;
     end;
+
   end;
-  setstate_failure(state);
+  for socketno := 0 to numsock-1 do begin
+    setstate_failure(states[socketno]);
+
+  end;
+  fresultlist := biniplist_new;
   onrequestdone(self,0);
 end;
 
@@ -233,12 +323,28 @@ end;
  
   begin
     if dwas.reverse then begin 
-      state.resultstr := dwas.name;
+      states[0].resultstr := dwas.name;
     end else begin 
-      state.resultbin := dwas.ip;
-      if (forwardfamily = AF_INET6) and (state.resultbin.family = AF_INET) then begin
-        fillchar(state.resultbin,sizeof(tbinip),0);
+
+      {$ifdef ipv6}
+      if (requestaf = useaf_preferv4) then begin
+        {prefer mode: sort the IP's}
+        fresultlist := biniplist_new;
+        addipsoffamily(fresultlist,dwas.iplist,af_inet);
+        addipsoffamily(fresultlist,dwas.iplist,af_inet6);
+
+      end else if (requestaf = useaf_preferv6) then begin
+        {prefer mode: sort the IP's}
+        fresultlist := biniplist_new;
+        addipsoffamily(fresultlist,dwas.iplist,af_inet6);
+        addipsoffamily(fresultlist,dwas.iplist,af_inet);
+        
+      end else
+      {$endif}
+      begin
+        fresultlist := dwas.iplist;
       end;
+
     end;
     dwas.release;
     onrequestdone(self,error);
diff --git a/dnscore.pas b/dnscore.pas
index ef4c2f1..600581d 100755
--- a/dnscore.pas
+++ b/dnscore.pas
@@ -163,8 +163,7 @@ function makereversename(const binip:tbinip):string;
 procedure setstate_request_init(const name:string;var state:tdnsstate);
 
 //set up state for a foward lookup. A family value of AF_INET6 will give only
-//ipv6 results. Any other value will give ipv4 results in preference and ipv6
-//results if ipv4 results are not available;
+//ipv6 results. Any other value will give only ipv4 results
 procedure setstate_forward(const name:string;var state:tdnsstate;family:integer);
 
 procedure setstate_reverse(const binip:tbinip;var state:tdnsstate);
@@ -188,14 +187,27 @@ var
   dnsserverlist : tstringlist;
 //  currentdnsserverno : integer;
 
+
+//getcurrentsystemnameserver returns the nameserver the app should use and sets
+//id to the id of that nameserver. id should later be used to report how laggy
+//the servers response was and if it was timed out.
 function getcurrentsystemnameserver(var id:integer) :string;
+procedure reportlag(id:integer;lag:integer); //lag should be in microseconds and should be -1 to report a timeout
 
 //var
 //  unixnameservercache:string;
 { $endif}
 
 
-procedure reportlag(id:integer;lag:integer); //lag should be in microseconds and should be -1 to report a timeout
+{$ifdef linux}{$ifdef ipv6}
+function getv6localips:tbiniplist;
+procedure initpreferredmode;
+
+var
+  preferredmodeinited:boolean;
+
+{$endif}{$endif}
+
 var
   failurereason:string;
 
@@ -516,23 +528,7 @@ begin
 
     {no cnames found, no items of correct type found}
     if state.forwardfamily <> 0 then goto failure;
-{$ifdef ipv6}
-    if (state.requesttype = querytype_a) then begin
-      {v6 only: in case of forward, look for AAAA in alternative section}
-      for a := state.numrr1[0]+state.numrr1[1]+state.numrr1[2] to (state.numrr2-1) do begin
-        rrptemp := @state.rrdata[1+a*sizeof(trrpointer)];
-        rrtemp := rrptemp.p;
-        b := rrptemp.len;
-        if rrtemp.requesttype = querytype_aaaa then begin
-          setstate_return(rrptemp^,b,state);
-          exit;
-        end;
-      end;
-      {no AAAA's found in alternative, do a recursive lookup for them}
-      state.requesttype := querytype_aaaa;
-      goto recursed;
-    end;
-{$endif}
+
     goto failure;
 recursed:
     {here it needs recursed lookup}
@@ -703,6 +699,65 @@ begin
 
 end;
 
+
+
+{$ifdef linux}{$ifdef ipv6}
+function getv6localips:tbiniplist;
+var
+  t:textfile;
+  s,s2:string;
+  ip:tbinip;
+  a:integer;
+begin
+  result := biniplist_new;
+
+  assignfile(t,'/proc/net/if_inet6');
+  {$i-}reset(t);{$i+}
+  if ioresult <> 0 then exit; {none found, return empty list}
+
+  while not eof(t) do begin
+    readln(t,s);
+    s2 := '';
+    for a := 0 to 7 do begin
+      if (s2 <> '') then s2 := s2 + ':';
+      s2 := s2 + copy(s,(a shl 2)+1,4);
+    end;
+    ipstrtobin(s2,ip);
+    if ip.family <> 0 then biniplist_add(result,ip);
+  end;
+  closefile(t);
+end;
+
+procedure initpreferredmode;
+var
+  l:tbiniplist;
+  a:integer;
+  ip:tbinip;
+  ipmask_global,ipmask_6to4,ipmask_teredo:tbinip;
+
+begin
+  if preferredmodeinited then exit;
+  if useaf <> useaf_default then exit;
+  useaf := useaf_preferv4;
+  l := getv6localips;
+  ipstrtobin('2000::',ipmask_global);
+  ipstrtobin('2001::',ipmask_teredo);
+  ipstrtobin('2002::',ipmask_6to4);
+  {if there is any v6 IP which is globally routable and not 6to4 and not teredo, prefer v6}
+  for a := biniplist_getcount(l)-1 downto 0 do begin
+    ip := biniplist_get(l,a);
+    if not comparebinipmask(ip,ipmask_global,3) then continue;
+    if comparebinipmask(ip,ipmask_teredo,32) then continue;
+    if comparebinipmask(ip,ipmask_6to4,16) then continue;
+    useaf := useaf_preferv6;
+    preferredmodeinited := true;
+    exit;
+  end;
+end;
+
+{$endif}{$endif}
+
+
 {  quick and dirty description of dns packet structure to aid writing and
    understanding of parser code, refer to appropriate RFCs for proper specs
 - all words are network order
diff --git a/dnssync.pas b/dnssync.pas
index 3632b29..b682acf 100755
--- a/dnssync.pas
+++ b/dnssync.pas
@@ -44,14 +44,7 @@ function forwardlookuplist(name:string;timeout:integer):tbiniplist;
 //details as above
 function reverselookup(ip:tbinip;timeout:integer):string;
 
-{$ifdef linux}{$ifdef ipv6}
-function getv6localips:tbiniplist;
-procedure initpreferredmode;
 
-var
-  preferredmodeinited:boolean;
-
-{$endif}{$endif}
 
 const
   tswrap=$4000;
@@ -274,16 +267,6 @@ begin
 end;
 {$endif}
 
-procedure addipsoffamily(var l:tbiniplist;const l2:tbiniplist;family:integer);
-var
-  a:integer;
-  biniptemp:tbinip;
-begin
-  for a := biniplist_getcount(l2)-1 downto 0 do begin
-    biniptemp := biniplist_get(l2,a);
-    if (biniptemp.family = family) then biniplist_add(l,biniptemp);
-  end;
-end;
 
 
 function forwardlookuplist(name:string;timeout:integer):tbiniplist;
@@ -383,62 +366,6 @@ begin
   {$endif}
 end;
 
-{$ifdef linux}{$ifdef ipv6}{$ifdef syncdnscore}
-function getv6localips:tbiniplist;
-var
-  t:textfile;
-  s,s2:string;
-  ip:tbinip;
-  a:integer;
-begin
-  result := biniplist_new;
-
-  assignfile(t,'/proc/net/if_inet6');
-  {$i-}reset(t);{$i+}
-  if ioresult <> 0 then exit; {none found, return empty list}
-
-  while not eof(t) do begin
-    readln(t,s);
-    s2 := '';
-    for a := 0 to 7 do begin
-      if (s2 <> '') then s2 := s2 + ':';
-      s2 := s2 + copy(s,(a shl 2)+1,4);
-    end;
-    ipstrtobin(s2,ip);
-    if ip.family <> 0 then biniplist_add(result,ip);
-  end;
-  closefile(t);
-end;
-
-procedure initpreferredmode;
-var
-  l:tbiniplist;
-  a:integer;
-  ip:tbinip;
-  ipmask_global,ipmask_6to4,ipmask_teredo:tbinip;
-
-begin
-  if preferredmodeinited then exit;
-  if useaf <> useaf_default then exit;
-  useaf := useaf_preferv4;
-  l := getv6localips;
-  ipstrtobin('2000::',ipmask_global);
-  ipstrtobin('2001::',ipmask_teredo);
-  ipstrtobin('2002::',ipmask_6to4);
-  {if there is any v6 IP which is globally routable and not 6to4 and not teredo, prefer v6}
-  for a := biniplist_getcount(l)-1 downto 0 do begin
-    ip := biniplist_get(l,a);
-    if not comparebinipmask(ip,ipmask_global,3) then continue;
-    if comparebinipmask(ip,ipmask_teredo,32) then continue;
-    if comparebinipmask(ip,ipmask_6to4,16) then continue;
-    useaf := useaf_preferv6;
-    preferredmodeinited := true;
-    exit;
-  end;
-end;
-
-{$endif}{$endif}{$endif}
-
 {$ifdef win32}
   var
     wsadata : twsadata;
diff --git a/dnswin.pas b/dnswin.pas
index ffe472b..73f97ad 100755
--- a/dnswin.pas
+++ b/dnswin.pas
@@ -30,7 +30,7 @@ type
   public
     onrequestdone:tsocketevent;
     name : string;
-    ip : tbinip;
+    iplist : tbiniplist;
 
     procedure forwardlookup(name:string;ipv6preffered:boolean);
     procedure reverselookup(ip:tbinip);
@@ -290,7 +290,8 @@ begin
 end;
 procedure tdnswinasync.reverselookup(ip:tbinip);
 begin
-  self.ip := ip;
+  iplist := biniplist_new;
+  biniplist_add(iplist,ip);
   freverse := true;
   resume;
 end;
@@ -298,14 +299,14 @@ end;
 procedure tdnswinasync.execute;
 var
   error : integer;
-  l:tbiniplist;
+
 begin
   error := 0;
   if reverse then begin
-    name := winreverselookup(ip,error);
+    name := winreverselookup(biniplist_get(iplist,0),error);
   end else begin
-    l := winforwardlookuplist(name,0,error);
-    ip := biniplist_get(l,0);
+    iplist := winforwardlookuplist(name,0,error);
+
   end;
   postmessage(hwnddnswin,wm_user,error,taddrint(self));
 end;
diff --git a/lcoretest.dpr b/lcoretest.dpr
index 9c4ec7c..3770b19 100755
--- a/lcoretest.dpr
+++ b/lcoretest.dpr
@@ -65,7 +65,7 @@ begin
   receivecount := receivecount +1;
   if receivecount >50 then begin
     writeln('received over 50 bits of data, pausing to let the operator take a look');
-    readln;
+    
     receivecount := 0;
   end;
   while pos(#10,receivebuf) > 0 do begin
@@ -82,6 +82,7 @@ end;
 
 procedure tsc.sessionconnected(sender: tobject;error : word);
 begin
+  
   if error=0 then begin
     writeln('session is connected, local address is'+clientsocket.getxaddr);
 
@@ -112,6 +113,7 @@ begin
   das.onrequestdone := sc.dnsrequestdone;
   //das.forwardfamily := af_inet6;
   das.forwardlookup('irc.ipv6.p10link.net');
+  
 end;
 
 procedure tsc.dnsrequestdone(sender:tobject;error : word);
@@ -126,7 +128,7 @@ begin
   clientsocket.addr := tempbiniplist;
   clientsocket.port := '6667';
   clientsocket.connect;
-  writeln(clientsocket.getxaddr);
+  //writeln(clientsocket.getxaddr);
   das.free;
 end;