Merge pull request baresip#843 from alfredh/net_stuff

Added 'net_set_address' and 'net_set_af' API functions.

include/baresip.h

@@ -620,11 +620,13 @@ typedef void (net_change_h)(void *arg);
 int  net_alloc(struct network **netp, const struct config_net *cfg);
 int  net_use_nameserver(struct network *net,
 			const struct sa *srvv, size_t srvc);
+void net_set_address(struct network *net, const struct sa *ip);
 void net_change(struct network *net, uint32_t interval,
 		net_change_h *ch, void *arg);
 void net_force_change(struct network *net);
 bool net_check(struct network *net);
 int  net_af(const struct network *net);
+int  net_set_af(struct network *net, int af);
 int  net_dns_debug(struct re_printf *pf, const struct network *net);
 int  net_debug(struct re_printf *pf, const struct network *net);
 const struct sa *net_laddr_af(const struct network *net, int af);

src/net.c

@@ -481,6 +481,30 @@ int net_use_nameserver(struct network *net, const struct sa *srvv, size_t srvc)
 }
 
 
+/**
+ * Set network IP address
+ *
+ * @param net  Network instance
+ * @param ip   IP address
+ */
+
+void net_set_address(struct network *net, const struct sa *ip)
+{
+	switch (sa_af(ip)) {
+
+	case AF_INET:
+		sa_cpy(&net->laddr, ip);
+		return;
+
+#ifdef HAVE_INET6
+	case AF_INET6:
+		sa_cpy(&net->laddr6, ip);
+		return;
+#endif
+	}
+}
+
+
 /**
  * Check for networking changes with a regular interval
  *
@@ -566,6 +590,26 @@ int net_af(const struct network *net)
 }
 
 
+/**
+ * Set the preferred address family (AF)
+ *
+ * @param net Network instance
+ * @param Preferred address family
+ *
+ * @return 0 if success, otherwise errorcode
+ */
+int net_set_af(struct network *net, int af)
+{
+	if (af != AF_INET && af != AF_INET6)
+		return EAFNOSUPPORT;
+
+	if (net)
+		net->af = af;
+
+	return 0;
+}
+
+
 /**
  * Print networking debug information
  *