---------------------
PatchSet 4662 
Date: 2007/05/28 14:31:46
Author: amosjeffries
Branch: squid3-ipv6
Tag: (none) 
Log:
Test Options to prefer IPv6 hostname lookup.

Members: 
	NOTES-IPv6:1.1.2.23->1.1.2.24 
	src/tools.cc:1.22.2.17->1.22.2.18 

Index: squid3/NOTES-IPv6
===================================================================
RCS file: /cvsroot/squid-sf//squid3/Attic/NOTES-IPv6,v
retrieving revision 1.1.2.23
retrieving revision 1.1.2.24
diff -u -r1.1.2.23 -r1.1.2.24
--- squid3/NOTES-IPv6	28 May 2007 12:49:59 -0000	1.1.2.23
+++ squid3/NOTES-IPv6	28 May 2007 14:31:46 -0000	1.1.2.24
@@ -1,4 +1,4 @@
-$Id: NOTES-IPv6,v 1.1.2.23 2007/05/28 12:49:59 amosjeffries Exp $
+$Id: NOTES-IPv6,v 1.1.2.24 2007/05/28 14:31:46 amosjeffries Exp $
 
 KNOWN BUGS:
 
@@ -8,28 +8,21 @@
           Solved for all known events now, but this may reccur at any time
           until conversion is completed.
 
+PROBLEM:  USE_IPV6_SPLITSTACK defiend on dual-stack systems.
 
-CURRENT BLOCK:
- - Somewhere After receiving DNS packets telling IP of upstream source.
-Program received signal SIGABRT, Aborted.
-0xffffe410 in __kernel_vsyscall ()
-#0  0xffffe410 in __kernel_vsyscall ()
-#1  0xb7c60df0 in raise () from /lib/tls/i686/cmov/libc.so.6
-#2  0xb7c62641 in abort () from /lib/tls/i686/cmov/libc.so.6
-#3  0x08089341 in xassert (msg=0x814f517 "address.GetPort() != 0", file=0x814f189 "comm.cc", line=1291) at debug.cc:569
-#4  0x08107bb4 in comm_connect_addr (sock=13, address=@0x856fcf4) at comm.cc:1291
-#5  0x0810905d in ConnectStateData::connect (this=0x856fcd0) at comm.cc:1217
-#6  0x080c7b54 in ipcacheCallback (i=0x8334fcc) at ipcache.cc:271
-#7  0x08097ed0 in FwdState::connectStart (this=0x855b8e0) at forward.cc:889
-
-
-... And a number of problems caused by the URI handling in Squid. (bug #1961)
-
-PROBLEM:  Wireshark reports DNS queries looking up hostname A record for
-          '2001:200:0:8002:203:47ff:fea5:3085'
-Cause:    Something is building the NtoA of IP and assuming its valid hostname.
-          (should be usng ToHostname() at the point the hostname is needed.)
-FIXED ??
+SIDE_EFFECT: (also a bug)
+2007/05/29 01:25:13.965| fwdConnectStart: got addr [::], tos 0
+2007/05/29 01:25:13.965| comm_open: setsockopt(IPV6_V6ONLY) on FD 13: (92) Protocol not available
+2007/05/29 01:25:13.965| comm_open: FD 13 is a new socket
+
+
+PROBLEM: DNS (IPv6-only) getHostname lookup fails
+2007/05/29 02:27:33.085| idnsAddNameserver: Added nameserver #0 ([2002:3cea:e96f:0:2e0:18ff:febb:b02e]:53)
+2007/05/29 02:27:33.085| idnsAddNameserver: Added nameserver #1 ([2001:5c0:9388:0:2e0:18ff:febb:b02e]:53)
+2007/05/29 02:27:33.567| idnsALookup: buf is 37 bytes for proxy.treenet.co.nz, id = 0xa9ec
+2007/05/29 02:27:33.567| idnsSendQuery: FD 7: sendto: (97) Address family not supported by protocol
+2007/05/29 02:27:33.567| idnsSendQuery: FD 7: sendto: (97) Address family not supported by protocol
+LOCATION: src/tools.cc:605
 
 
 .... cache.log lines detected showing problems:
Index: squid3/src/tools.cc
===================================================================
RCS file: /cvsroot/squid-sf//squid3/src/tools.cc,v
retrieving revision 1.22.2.17
retrieving revision 1.22.2.18
diff -u -r1.22.2.17 -r1.22.2.18
--- squid3/src/tools.cc	27 May 2007 12:52:47 -0000	1.22.2.17
+++ squid3/src/tools.cc	28 May 2007 14:31:46 -0000	1.22.2.18
@@ -1,6 +1,6 @@
 
 /*
- * $Id: tools.cc,v 1.22.2.17 2007/05/27 12:52:47 amosjeffries Exp $
+ * $Id: tools.cc,v 1.22.2.18 2007/05/28 14:31:46 amosjeffries Exp $
  *
  * DEBUG: section 21    Misc Functions
  * AUTHOR: Harvest Derived
@@ -599,8 +599,11 @@
      * reverse DNS lookup on it.
      */
     if(! sa.IsAnyAddr() ) {
+
 #if USE_IPV6
-        if(! sa.IsIPv4() )
+// NP: to prefer IPv4 Hostname use this:        if( !sa.IsIPv4() )
+// NP: to prefer IPv6 Hostname use this:        if( sa.IsIPv6() )
+        if( sa.IsIPv6() )
         {
             struct in6_addr ipa;
             sa.GetInAddr(ipa);