add go-tun2socks code

core/c/include/lwip/apps/mdns.h

@@ -0,0 +1,105 @@
+/**
+ * @file
+ * MDNS responder
+ */
+
+ /*
+ * Copyright (c) 2015 Verisure Innovation AB
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Erik Ekman <erik@kryo.se>
+ *
+ */
+
+#ifndef LWIP_HDR_APPS_MDNS_H
+#define LWIP_HDR_APPS_MDNS_H
+
+#include "lwip/apps/mdns_opts.h"
+#include "lwip/netif.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if LWIP_MDNS_RESPONDER
+
+enum mdns_sd_proto {
+  DNSSD_PROTO_UDP = 0,
+  DNSSD_PROTO_TCP = 1
+};
+
+#define MDNS_PROBING_CONFLICT   0
+#define MDNS_PROBING_SUCCESSFUL 1
+
+#define MDNS_LABEL_MAXLEN  63
+
+struct mdns_host;
+struct mdns_service;
+
+/** Callback function to add text to a reply, called when generating the reply */
+typedef void (*service_get_txt_fn_t)(struct mdns_service *service, void *txt_userdata);
+
+/** Callback function to let application know the result of probing network for name
+ * uniqueness, called with result MDNS_PROBING_SUCCESSFUL if no other node claimed
+ * use for the name for the netif or a service and is safe to use, or MDNS_PROBING_CONFLICT
+ * if another node is already using it and mdns is disabled on this interface */
+typedef void (*mdns_name_result_cb_t)(struct netif* netif, u8_t result);
+
+void mdns_resp_init(void);
+
+void mdns_resp_register_name_result_cb(mdns_name_result_cb_t cb);
+
+err_t mdns_resp_add_netif(struct netif *netif, const char *hostname, u32_t dns_ttl);
+err_t mdns_resp_remove_netif(struct netif *netif);
+err_t mdns_resp_rename_netif(struct netif *netif, const char *hostname);
+
+s8_t  mdns_resp_add_service(struct netif *netif, const char *name, const char *service, enum mdns_sd_proto proto, u16_t port, u32_t dns_ttl, service_get_txt_fn_t txt_fn, void *txt_userdata);
+err_t mdns_resp_del_service(struct netif *netif, s8_t slot);
+err_t mdns_resp_rename_service(struct netif *netif, s8_t slot, const char *name);
+
+err_t mdns_resp_add_service_txtitem(struct mdns_service *service, const char *txt, u8_t txt_len);
+
+void mdns_resp_restart(struct netif *netif);
+void mdns_resp_announce(struct netif *netif);
+
+/**
+ * @ingroup mdns
+ * Announce IP settings have changed on netif.
+ * Call this in your callback registered by netif_set_status_callback().
+ * No need to call this function when LWIP_NETIF_EXT_STATUS_CALLBACK==1,
+ * this handled automatically for you.
+ * @param netif The network interface where settings have changed.
+ */
+#define mdns_resp_netif_settings_changed(netif) mdns_resp_announce(netif)
+
+#endif /* LWIP_MDNS_RESPONDER */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LWIP_HDR_APPS_MDNS_H */