X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=blobdiff_plain;f=src%2Ftcpip.c;h=11b676c11dbece0fb71a77cd1003e82242238c63;hp=fcdcce12a695d74c1635d65491f4fbe70700b9c7;hb=4ce7bffcae2b1faaa0fb5d74eca9aeeb7f6d0c6e;hpb=bf95c509245f5cb4025ef2db348d5f7ace3b5994

diff --git a/src/tcpip.c b/src/tcpip.c
index fcdcce1..11b676c 100644
--- a/src/tcpip.c
+++ b/src/tcpip.c
@@ -25,7 +25,6 @@
 #endif
 
 #ifdef WIN32
-
 /* VS 2003 or later has getaddrinfo; older versions do not */
 #include <winsock2.h>
 #if _MSC_VER >= 1300
@@ -34,14 +33,20 @@
 #else
 #define HAVE_GETADDRINFO 0
 #endif
+#endif
 
-#else
+#if HAVE_NETINET_IN_H
 #include <netinet/in.h>
+#endif
+#if HAVE_NETDB_H
 #include <netdb.h>
+#endif
+#if HAVE_ARPA_INET_H
 #include <arpa/inet.h>
+#endif
+#if HAVE_NETINET_TCP_H
 #include <netinet/tcp.h>
 #endif
-
 #if HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
@@ -413,8 +418,27 @@ int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
     return 1;
 }
 
-
 #if HAVE_GETADDRINFO
+/** \brief Creates socket using particular address family (AF_)
+    \param ai getaddrinfo result
+    \param mask family mask
+    \returns socket or -1 if none could be created
+
+*/
+static int create_socket_family(struct addrinfo *ai, unsigned mask)
+{
+    for (; ai; ai = ai->ai_next)
+    {
+        if ((ai->ai_family & mask) == mask)
+        {
+            int s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+            if (s != -1)
+                return s;
+        }
+    }
+    return -1;
+}
+
 void *tcpip_straddr(COMSTACK h, const char *str)
 {
     tcpip_state *sp = (tcpip_state *)h->cprivate;
@@ -429,14 +453,13 @@ void *tcpip_straddr(COMSTACK h, const char *str)
     sp->ai = tcpip_getaddrinfo(str, port);
     if (sp->ai && h->state == CS_ST_UNBND)
     {
-        int s = -1;
-        struct addrinfo *ai = sp->ai;
-        for (; ai; ai = ai->ai_next)
-        {
-            s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
-            if (s != -1)
-                break;
-        }
+        /* The getaddrinfo call may return multiple addresses when passive
+           flags are used (AI_PASSIVE). This function picks the IPV6 if a
+           socket can be created for it. Otherwise IPV4 is used.
+           See also bug #2350 */
+        int s = create_socket_family(sp->ai, AF_INET6);
+        if (s == -1)
+            s = create_socket_family(sp->ai, AF_INET);
         if (s == -1)
             return 0;
         h->iofile = s;