Implement native iodine client and fix RA heartbeat URL resolution.

Bundle iodine 0.7.0 with JNI TUN bridge; apply BE iodine credentials on connect; canonical heartbeat URL fallback.

Co-authored-by: Cursor <cursoragent@cursor.com>

third-party/iodine/src/fw_query.h

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2008-2014 Erik Ekman <yarrick@kryo.se>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef __FW_QUERY_H__
+#define __FW_QUERY_H__
+
+#include <sys/types.h>
+#ifdef WINDOWS32
+#include "windows.h"
+#include <winsock2.h>
+#else
+#include <sys/socket.h>
+#endif
+
+#define FW_QUERY_CACHE_SIZE 16
+
+struct fw_query {
+	struct sockaddr_storage addr;
+	int addrlen;
+	unsigned short id;
+};
+
+void fw_query_init(void);
+void fw_query_put(struct fw_query *fw_query);
+void fw_query_get(unsigned short query_id, struct fw_query **fw_query);
+
+#endif /*__FW_QUERY_H__*/
+