tcp comstack: change behavior for @-specs (anyaddr)

@ listens on AF_INET (IPV4) peers, and @6 listens to AF_INET6 (ipv6)
peers. Previously @ listened on AF_INET6 which accepted both IPV4 and
IPV6 peers on some Linux systems. However, in general that does not
work so YAZ can not rely on that to work. Debian changed behavior in
this respect from Debian lenny to Debian squeeze (still testing as of
Oct 2010). Refer to:
http://www.mail-archive.com/debian-devel@lists.debian.org/msg277726.html

diff --git a/NEWS b/NEWS
index e761eff..fed8f3b 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,12 @@
+tcp comstack: change behavior for @-specs (anyaddr). @ listens on
+AF_INET (IPV4) peers, and @6 listens to AF_INET6 (ipv6) peers.
+Previously @ listened on AF_INET6 which accepted both IPV4 and IPV6
+peers on some Linux systems. However, in general that does not work
+so YAZ can not rely on that to work. Debian changed behavior in this
+respect from Debian lenny to Debian squeeze (still testing as of Oct
+2010). Refer to:
+http://www.mail-archive.com/debian-devel@lists.debian.org/msg277726.html
+
 --- 4.1.1 2010/10/05
 
 Fix yaz-config output: echo_source not set correctly by configure.

diff --git a/src/tcpip.c b/src/tcpip.c
index d72bc44..dc1d127 100644 (file)
--- a/src/tcpip.c
+++ b/src/tcpip.c
@@ -363,6 +363,13 @@ struct addrinfo *tcpip_getaddrinfo(const char *str, const char *port)
     if (!strcmp("@", host))
     {
         hints.ai_flags = AI_PASSIVE;
+        hints.ai_family = AF_INET;
+        error = getaddrinfo(0, port, &hints, &res);
+    }
+    else if (!strcmp("@6", host))
+    {
+        hints.ai_flags = AI_PASSIVE;
+        hints.ai_family = AF_INET6;
         error = getaddrinfo(0, port, &hints, &res);
     }
     else
@@ -434,25 +441,11 @@ void *tcpip_straddr(COMSTACK h, const char *str)
     if (sp->ai && h->state == CS_ST_UNBND)
     {
         int s = -1;
-        /* try to make IPV6 socket first */
         for (ai = sp->ai; ai; ai = ai->ai_next)
         {
-            if (ai->ai_family == AF_INET6)
-            {
-                s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
-                if (s != -1)
-                    break;
-            }
-        }
-        if (s == -1)
-        {
-            /* no IPV6 could be made.. Try them all */
-            for (ai = sp->ai; ai; ai = ai->ai_next)
-            {
-                s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
-                if (s != -1)
-                    break;
-            }
+            s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+            if (s != -1)
+                break;
         }
         if (s == -1)
             return 0;