Allow listeners to be able to listen on unavailable addresses.

[user/henk/code/inspircd.git] / src / listensocket.cpp

diff --git a/src/listensocket.cpp b/src/listensocket.cpp
index 13aebf75f4b3ef2419bf2d68f335686cbb1e7c5b..d09f5e62436ea60ca1a70c33c2ea699b13c255f8 100644 (file)
--- a/src/listensocket.cpp
+++ b/src/listensocket.cpp
@@ -54,6 +54,20 @@ ListenSocket::ListenSocket(ConfigTag* tag, const irc::sockets::sockaddrs& bind_t
        }
 #endif
 
+       if (tag->getBool("free"))
+       {
+               socklen_t enable = 1;
+#if defined IP_FREEBIND // Linux 2.4+
+               setsockopt(fd, SOL_IP, IP_FREEBIND, &enable, sizeof(enable));
+#elif defined IP_BINDANY // FreeBSD
+               setsockopt(fd, IPPROTO_IP, IP_BINDANY, &enable, sizeof(enable));
+#elif defined SO_BINDANY // NetBSD/OpenBSD
+               setsockopt(fd, SOL_SOCKET, SO_BINDANY, &enable, sizeof(enable));
+#else
+               (void)enable;
+#endif
+       }
+
        SocketEngine::SetReuse(fd);
        int rv = SocketEngine::Bind(this->fd, bind_to);
        if (rv >= 0)