Re #1945 (misc): Set IPv6 sockets to be IPv6 only

Auto-detect in configure script if this option is supported, and if yes, Set IPv6 sockets to be IPv6 only.

Thanks to Alexander Traud for the patch.



git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@5403 74dad513-b988-da41-8d7b-12977e46ad98

aconfigure

@@ -751,7 +751,6 @@ infodir
 docdir
 oldincludedir
 includedir
-runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -874,7 +873,6 @@ datadir='${datarootdir}'
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
-runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
@@ -1127,15 +1125,6 @@ do
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
-  -runstatedir | --runstatedir | --runstatedi | --runstated \
-  | --runstate | --runstat | --runsta | --runst | --runs \
-  | --run | --ru | --r)
-    ac_prev=runstatedir ;;
-  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
-  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
-  | --run=* | --ru=* | --r=*)
-    runstatedir=$ac_optarg ;;
-
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1273,7 +1262,7 @@ fi
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir runstatedir
+		libdir localedir mandir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -1426,7 +1415,6 @@ Fine tuning of the installation directories:
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
-  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]
@@ -5606,6 +5594,31 @@ $as_echo "no" >&6; }
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if IPV6_V6ONLY is available" >&5
+$as_echo_n "checking if IPV6_V6ONLY is available... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/socket.h>
+                                     #include <netinet/in.h>
+int
+main ()
+{
+int opt = IPV6_V6ONLY;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  $as_echo "#define PJ_SOCK_HAS_IPV6_V6ONLY 1" >>confdefs.h
+
+		   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking if SO_ERROR is available" >&5
 $as_echo_n "checking if SO_ERROR is available... " >&6; }
 case $target in

aconfigure.ac

@@ -343,6 +343,15 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
 		   AC_MSG_RESULT(yes)],
 		  AC_MSG_RESULT(no))
 
+dnl # Determine if IPV6_V6ONLY is available
+AC_MSG_CHECKING([if IPV6_V6ONLY is available])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>
+                                     #include <netinet/in.h>]],
+		    		   [int opt = IPV6_V6ONLY;])],
+		  [AC_DEFINE(PJ_SOCK_HAS_IPV6_V6ONLY,1)
+		   AC_MSG_RESULT(yes)],
+		  AC_MSG_RESULT(no))
+
 dnl # Determine if SO_ERROR is available
 AC_MSG_CHECKING([if SO_ERROR is available])
 case $target in

pjlib/include/pj/compat/os_auto.h.in

@@ -83,6 +83,7 @@
 #undef PJ_HAS_WINSOCK2_H
 #undef PJ_HAS_WS2TCPIP_H
 
+#undef PJ_SOCK_HAS_IPV6_V6ONLY
 #undef PJ_SOCK_HAS_INET_ATON
 #undef PJ_SOCK_HAS_INET_PTON
 #undef PJ_SOCK_HAS_INET_NTOP

pjlib/src/pj/sock_bsd.c

@@ -539,6 +539,12 @@ PJ_DEF(pj_status_t) pj_sock_socket(int af,
 	    pj_sock_setsockopt(*sock, pj_SOL_SOCKET(), pj_SO_NOSIGPIPE(),
 			       &val, sizeof(val));
 	}
+#if defined(PJ_SOCK_HAS_IPV6_V6ONLY) && PJ_SOCK_HAS_IPV6_V6ONLY != 0
+	if (af == PJ_AF_INET6) {
+	    pj_sock_setsockopt(*sock, PJ_SOL_IPV6, IPV6_V6ONLY,
+			       &val, sizeof(val));
+	}
+#endif
 #if defined(PJ_IPHONE_OS_HAS_MULTITASKING_SUPPORT) && \
     PJ_IPHONE_OS_HAS_MULTITASKING_SUPPORT!=0
 	if (type == pj_SOCK_DGRAM()) {