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diff --git a/src/transport/gnunet-service-transport_hello.h b/src/transport/gnunet-service-transport_hello.h
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+/*
+     This file is part of GNUnet.
+     (C) 2010,2011 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file transport/gnunet-service-transport_hello.h
+ * @brief hello API
+ * @author Christian Grothoff
+ */
+#ifndef GNUNET_SERVICE_TRANSPORT_HELLO_H
+#define GNUNET_SERVICE_TRANSPORT_HELLO_H
+
+#include "gnunet_statistics_service.h"
+#include "gnunet_transport_service.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_hello_lib.h"
+
+
+
+/**
+ * Signature of a function to call whenever our hello changes.
+ *
+ * @param cls closure
+ * @param hello updated HELLO
+ */
+typedef void (*GST_HelloCallback) (void *cls,
+                                   const struct GNUNET_MessageHeader * hello);
+
+
+/**
+ * Initialize the HELLO module.
+ *
+ * @param cb function to call whenever our HELLO changes
+ * @param cb_cls closure for cb
+ */
+void
+GST_hello_start (GST_HelloCallback cb, void *cb_cls);
+
+
+/**
+ * Shutdown the HELLO module.
+ */
+void
+GST_hello_stop (void);
+
+
+/**
+ * Obtain this peers HELLO message.
+ *
+ * @return our HELLO message
+ */
+const struct GNUNET_MessageHeader *
+GST_hello_get (void);
+
+
+/**
+ * Add or remove an address from this peer's HELLO message.
+ *
+ * @param addremove GNUNET_YES to add, GNUNET_NO to remove
+ * @param address address to add or remove
+ */
+void
+GST_hello_modify_addresses (int addremove,
+                            const struct GNUNET_HELLO_Address *address);
+
+
+/**
+ * Test if a particular address is one of ours.
+ *
+ * @param address the address to test
+ * @param sig location where to cache PONG signatures for this address [set]
+ * @param sig_expiration how long until the current 'sig' expires?
+ *            (ZERO if sig was never created) [set]
+ * @return GNUNET_YES if this is one of our addresses,
+ *         GNUNET_NO if not
+ */
+int
+GST_hello_test_address (const struct GNUNET_HELLO_Address *address,
+                        struct GNUNET_CRYPTO_RsaSignature **sig,
+                        struct GNUNET_TIME_Absolute **sig_expiration);
+
+
+#endif
+/* end of file gnunet-service-transport_hello.h */