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[gnunet] 02/04: News: Removed old hello functionality.


From: gnunet
Subject: [gnunet] 02/04: News: Removed old hello functionality.
Date: Tue, 24 Oct 2023 17:40:47 +0200

This is an automated email from the git hooks/post-receive script.

t3sserakt pushed a commit to branch master
in repository gnunet.

commit b5e243908f1539b9f00bfe5c485804d02d682aab
Author: t3sserakt <t3ss@posteo.de>
AuthorDate: Mon Oct 23 10:57:11 2023 +0200

    News: Removed old hello functionality.
---
 src/include/Makefile.am                            |    2 -
 src/include/gnunet_dht_service.h                   |    1 -
 src/include/gnunet_hello_lib.h                     |  545 ---------
 src/include/gnunet_hello_uri_lib.h                 |   29 +
 src/include/gnunet_transport_hello_service.h       |  209 ----
 src/lib/hello/Makefile.am                          |    2 -
 src/lib/hello/address.c                            |  139 ---
 src/lib/hello/gnunet-hello.c                       |    1 -
 src/lib/hello/hello-uri.c                          |   81 ++
 src/lib/hello/hello.c                              | 1249 --------------------
 src/lib/hello/test_friend_hello.c                  |  185 ---
 src/lib/hello/test_hello-ng.c                      |   60 -
 src/lib/hello/test_hello.c                         |  253 ----
 src/service/core/core_api_cmd_connecting_peers.c   |    1 -
 src/service/dht/dht_api.c                          |    1 -
 src/service/dht/test_dht_api.c                     |    1 -
 src/service/transport/gnunet-service-transport.c   |    1 -
 .../transport/transport-testing-communicator.c     |    1 -
 src/service/transport/transport-testing2.c         |   53 -
 src/service/transport/transport-testing2.h         |    1 -
 src/service/transport/transport_api2_core.c        |    1 -
 .../transport_api_cmd_backchannel_check.c          |    1 -
 .../transport/transport_api_cmd_connecting_peers.c |    1 -
 23 files changed, 110 insertions(+), 2708 deletions(-)

diff --git a/src/include/Makefile.am b/src/include/Makefile.am
index e39f467b9..cf8c49cf1 100644
--- a/src/include/Makefile.am
+++ b/src/include/Makefile.am
@@ -54,7 +54,6 @@ gnunetinclude_HEADERS = \
   gnunet_gnsrecord_json_lib.h \
   gnunet_gnsrecord_plugin.h \
   gnu_name_system_record_types.h \
-  gnunet_hello_lib.h \
   gnunet_hello_uri_lib.h \
   gnunet_helper_lib.h \
   gnunet_identity_service.h \
@@ -121,7 +120,6 @@ gnunetinclude_HEADERS = \
   gnunet_transport_communication_service.h \
   gnunet_transport_monitor_service.h \
   gnunet_transport_core_service.h \
-  gnunet_transport_hello_service.h \
   gnunet_transport_testing_ng_lib.h \
   gnunet_tun_lib.h \
   gnunet_uri_lib.h \
diff --git a/src/include/gnunet_dht_service.h b/src/include/gnunet_dht_service.h
index 3d1264991..a1ea31c25 100644
--- a/src/include/gnunet_dht_service.h
+++ b/src/include/gnunet_dht_service.h
@@ -43,7 +43,6 @@
 
 #include "gnunet_util_lib.h"
 #include "gnunet_block_lib.h"
-#include "gnunet_hello_lib.h"
 
 #ifdef __cplusplus
 extern "C"
diff --git a/src/include/gnunet_hello_lib.h b/src/include/gnunet_hello_lib.h
deleted file mode 100644
index b57f48ac5..000000000
--- a/src/include/gnunet_hello_lib.h
+++ /dev/null
@@ -1,545 +0,0 @@
-/*
-     This file is part of GNUnet.
-     Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2010, 2011 GNUnet e.V.
-
-     GNUnet is free software: you can redistribute it and/or modify it
-     under the terms of the GNU Affero General Public License as published
-     by the Free Software Foundation, either version 3 of the License,
-     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
-     Affero General Public License for more details.
-
-     You should have received a copy of the GNU Affero General Public License
-     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-     SPDX-License-Identifier: AGPL3.0-or-later
- */
-
-/**
- * @addtogroup Backbone
- * @{
- *
- * @author Christian Grothoff
- * @file
- * Helper library for handling HELLOs
- *
- * @defgroup hello  Hello library
- * Helper library for handling HELLOs
- *
- * @see [Documentation](https://gnunet.org/gnunets-hostlist-subsystem)
- *
- * @{
- */
-
-#ifndef GNUNET_HELLO_LIB_H
-#define GNUNET_HELLO_LIB_H
-
-#ifdef __cplusplus
-extern "C" {
-#if 0 /* keep Emacsens' auto-indent happy */
-}
-#endif
-#endif
-
-
-#include "gnunet_util_lib.h"
-
-/**
- * Prefix that every HELLO URI must start with.
- */
-#define GNUNET_HELLO_URI_PREFIX "gnunet://hello/"
-
-/**
- * Prefix that every FRIEND HELLO URI must start with.
- */
-#define GNUNET_FRIEND_HELLO_URI_PREFIX "gnunet://friend-hello/"
-
-/**
- * Separator used in HELLO URI
- */
-#define GNUNET_HELLO_URI_SEP '+'
-
-
-/**
- * Additional local information about an address
- *
- * These information are only valid for the local peer and are not serialized
- * when a #GNUNET_HELLO_Message is created
- */
-enum GNUNET_HELLO_AddressInfo
-{
-  /**
-   * No additional information
-   */
-  GNUNET_HELLO_ADDRESS_INFO_NONE = 0,
-
-  /**
-   * This is an inbound address and cannot be used to initiate an outbound
-   * connection to another peer
-   */
-  GNUNET_HELLO_ADDRESS_INFO_INBOUND = 1
-};
-
-
-/**
- * An address for communicating with a peer.  We frequently
- * need this tuple and the components cannot really be
- * separated.  This is NOT the format that would be used
- * on the wire.
- */
-struct GNUNET_HELLO_Address
-{
-  /**
-   * For which peer is this an address?
-   */
-  struct GNUNET_PeerIdentity peer;
-
-  /**
-   * Name of the transport plugin enabling the communication using
-   * this address.
-   */
-  const char *transport_name;
-
-  /**
-   * Binary representation of the address (plugin-specific).
-   */
-  const void *address;
-
-  /**
-   * Number of bytes in @e address.
-   */
-  size_t address_length;
-
-  /**
-   * Extended information about address
-   *
-   * This field contains additional #GNUNET_HELLO_AddressInfo flags e.g.
-   * to indicate an address is inbound and cannot be used to initiate an
-   * outbound connection.
-   *
-   * These information are only valid for the local peer and are not serialized
-   * when a #GNUNET_HELLO_Message is created
-   */
-  enum GNUNET_HELLO_AddressInfo local_info;
-};
-
-
-/**
- * Allocate an address struct.
- *
- * @param peer the peer
- * @param transport_name plugin name
- * @param address binary address
- * @param address_length number of bytes in @a address
- * @param local_info additional local information for the address
- * @return the address struct
- */
-struct GNUNET_HELLO_Address *
-GNUNET_HELLO_address_allocate (const struct GNUNET_PeerIdentity *peer,
-                               const char *transport_name,
-                               const void *address,
-                               size_t address_length,
-                               enum GNUNET_HELLO_AddressInfo local_info);
-
-
-/**
- * Copy an address struct.
- *
- * @param address address to copy
- * @return a copy of the address struct
- */
-struct GNUNET_HELLO_Address *
-GNUNET_HELLO_address_copy (const struct GNUNET_HELLO_Address *address);
-
-
-/**
- * Compare two addresses.  Does NOT compare the peer identity,
- * that is assumed already to match!
- *
- * @param a1 first address
- * @param a2 second address
- * @return 0 if the addresses are equal, -1 if @a a1< @a a2, 1 if @a a1> @a a2.
- */
-int
-GNUNET_HELLO_address_cmp (const struct GNUNET_HELLO_Address *a1,
-                          const struct GNUNET_HELLO_Address *a2);
-
-
-/**
- * Get the size of an address struct.
- *
- * @param address address
- * @return the size
- */
-size_t
-GNUNET_HELLO_address_get_size (const struct GNUNET_HELLO_Address *address);
-
-
-/**
- * Check if an address has a local option set
- *
- * @param address the address to check
- * @param option the respective option to check for
- * @return #GNUNET_YES or #GNUNET_NO
- */
-int
-GNUNET_HELLO_address_check_option (const struct GNUNET_HELLO_Address *address,
-                                   enum GNUNET_HELLO_AddressInfo option);
-
-
-/**
- * Free an address.
- *
- * @param addr address to free
- */
-#define GNUNET_HELLO_address_free(addr) GNUNET_free (addr)
-
-
-GNUNET_NETWORK_STRUCT_BEGIN
-
-/**
- * A HELLO message is used to exchange information about
- * transports with other peers.  This struct is always
- * followed by the actual network addresses which have
- * the format:
- *
- * 1) transport-name (0-terminated)
- * 2) address-length (uint16_t, network byte order; possibly
- *    unaligned!)
- * 3) address expiration (`struct GNUNET_TIME_AbsoluteNBO`); possibly
- *    unaligned!)
- * 4) address (address-length bytes; possibly unaligned!)
- */
-struct GNUNET_HELLO_Message
-{
-  /**
-   * Type will be #GNUNET_MESSAGE_TYPE_HELLO.
-   */
-  struct GNUNET_MessageHeader header;
-
-  /**
-   * Use in F2F mode: Do not gossip this HELLO message
-   */
-  uint32_t friend_only GNUNET_PACKED;
-
-  /**
-   * The public key of the peer.
-   */
-  struct GNUNET_CRYPTO_EddsaPublicKey publicKey;
-};
-GNUNET_NETWORK_STRUCT_END
-
-
-/**
- * Return HELLO type
- *
- * @param h HELLO Message to test
- * @return #GNUNET_YES for friend-only or #GNUNET_NO otherwise
- */
-int
-GNUNET_HELLO_is_friend_only (const struct GNUNET_HELLO_Message *h);
-
-
-/**
- * Copy the given address information into
- * the given buffer using the format of HELLOs.
- *
- * @param address address to add
- * @param expiration expiration for the address
- * @param target where to copy the address
- * @param max maximum number of bytes to copy to @a target
- * @return number of bytes copied, 0 if
- *         the target buffer was not big enough.
- */
-size_t
-GNUNET_HELLO_add_address (const struct GNUNET_HELLO_Address *address,
-                          struct GNUNET_TIME_Absolute expiration,
-                          char *target,
-                          size_t max);
-
-
-/**
- * Callback function used to fill a buffer of max bytes with a list of
- * addresses in the format used by HELLOs.  Should use
- * #GNUNET_HELLO_add_address() as a helper function.
- *
- * @param cls closure
- * @param max maximum number of bytes that can be written to @a buf
- * @param buf where to write the address information
- * @return number of bytes written or 0, #GNUNET_SYSERR to signal the
- *         end of the iteration.
- */
-typedef ssize_t
-(*GNUNET_HELLO_GenerateAddressListCallback) (void *cls,
-                                             size_t max,
-                                             void *buf);
-
-
-/**
- * Construct a HELLO message given the public key,
- * expiration time and an iterator that spews the
- * transport addresses.
- *
- * If friend only is set to #GNUNET_YES we create a FRIEND_HELLO which
- * will not be gossiped to other peers.
- *
- * @param public_key public key to include in the HELLO
- * @param addrgen callback to invoke to get addresses
- * @param addrgen_cls closure for @a addrgen
- * @param friend_only should the returned HELLO be only visible to friends?
- * @return the hello message
- */
-struct GNUNET_HELLO_Message *
-GNUNET_HELLO_create (const struct GNUNET_CRYPTO_EddsaPublicKey *public_key,
-                     GNUNET_HELLO_GenerateAddressListCallback addrgen,
-                     void *addrgen_cls,
-                     int friend_only);
-
-
-/**
- * Return the size of the given HELLO message.
- *
- * @param hello to inspect
- * @return the size, 0 if HELLO is invalid
- */
-uint16_t
-GNUNET_HELLO_size (const struct GNUNET_HELLO_Message *hello);
-
-
-/**
- * Construct a HELLO message by merging the
- * addresses in two existing HELLOs (which
- * must be for the same peer).
- *
- * @param h1 first HELLO message
- * @param h2 the second HELLO message
- * @return the combined hello message
- */
-struct GNUNET_HELLO_Message *
-GNUNET_HELLO_merge (const struct GNUNET_HELLO_Message *h1,
-                    const struct GNUNET_HELLO_Message *h2);
-
-
-/**
- * Test if two HELLO messages contain the same addresses.
- * If they only differ in expiration time, the lowest
- * expiration time larger than 'now' where they differ
- * is returned.
- *
- * @param h1 first HELLO message
- * @param h2 the second HELLO message
- * @param now time to use for deciding which addresses have
- *            expired and should not be considered at all
- * @return absolute time forever if the two HELLOs are
- *         totally identical; smallest timestamp >= now if
- *         they only differ in timestamps;
- *         zero if the some addresses with expirations >= now
- *         do not match at all
- */
-struct GNUNET_TIME_Absolute
-GNUNET_HELLO_equals (const struct GNUNET_HELLO_Message *h1,
-                     const struct GNUNET_HELLO_Message *h2,
-                     struct GNUNET_TIME_Absolute now);
-
-
-/**
- * Iterator callback to go over all addresses.
- *
- * @param cls closure
- * @param address the address
- * @param expiration expiration time
- * @return #GNUNET_OK to keep the address,
- *         #GNUNET_NO to delete it from the HELLO
- *         #GNUNET_SYSERR to stop iterating (but keep current address)
- */
-typedef int (*GNUNET_HELLO_AddressIterator) (
-  void *cls,
-  const struct GNUNET_HELLO_Address *address,
-  struct GNUNET_TIME_Absolute expiration);
-
-
-/**
- * When does the last address in the given HELLO expire?
- *
- * @param msg HELLO to inspect
- * @return time the last address expires, 0 if there are no addresses in the 
HELLO
- */
-struct GNUNET_TIME_Absolute
-GNUNET_HELLO_get_last_expiration (const struct GNUNET_HELLO_Message *msg);
-
-
-/**
- * Iterate over all of the addresses in the HELLO.
- *
- * @param msg HELLO to iterate over; client does not need to
- *        have verified that msg is well-formed (beyond starting
- *        with a GNUNET_MessageHeader of the right type).
- * @param return_modified if a modified copy should be returned,
- *         otherwise NULL will be returned
- * @param it iterator to call on each address
- * @param it_cls closure for @a it
- * @return the modified HELLO or NULL
- */
-struct GNUNET_HELLO_Message *
-GNUNET_HELLO_iterate_addresses (const struct GNUNET_HELLO_Message *msg,
-                                int return_modified,
-                                GNUNET_HELLO_AddressIterator it,
-                                void *it_cls);
-
-
-/**
- * Iterate over addresses in @a new_hello that are NOT already present
- * in @a old_hello. Note that if the address is present in @a old_hello
- * but the expiration time in @a new_hello is more recent, the
- * iterator is also called.
- *
- * @param new_hello a HELLO message
- * @param old_hello a HELLO message
- * @param expiration_limit ignore addresses in old_hello
- *        that expired before the given time stamp
- * @param it iterator to call on each address
- * @param it_cls closure for @a it
- */
-void
-GNUNET_HELLO_iterate_new_addresses (
-  const struct GNUNET_HELLO_Message *new_hello,
-  const struct GNUNET_HELLO_Message *old_hello,
-  struct GNUNET_TIME_Absolute expiration_limit,
-  GNUNET_HELLO_AddressIterator it,
-  void *it_cls);
-
-
-/**
- * Get the peer identity from a HELLO message.
- *
- * @param hello the hello message
- * @param peer where to store the peer's identity
- * @return #GNUNET_SYSERR if the HELLO was malformed
- */
-int
-GNUNET_HELLO_get_id (const struct GNUNET_HELLO_Message *hello,
-                     struct GNUNET_PeerIdentity *peer);
-
-
-/**
- * Get the header from a HELLO message, used so other code
- * can correctly send HELLO messages.
- *
- * @param hello the hello message
- *
- * @return header or NULL if the HELLO was malformed
- */
-struct GNUNET_MessageHeader *
-GNUNET_HELLO_get_header (struct GNUNET_HELLO_Message *hello);
-
-
-/**
- * Helper function to load/access transport plugins.
- * FIXME: pass closure!
- *
- * @param name name of the transport plugin to load
- * @return NULL if a plugin with name @a name is not known/loadable
- */
-typedef struct GNUNET_TRANSPORT_PluginFunctions *(
-*GNUNET_HELLO_TransportPluginsFind) (const char *name);
-
-
-/**
- * Compose a hello URI string from a hello message.
- *
- * @param hello Hello message
- * @param plugins_find Function to find transport plugins by name
- * @return Hello URI string
- */
-char *
-GNUNET_HELLO_compose_uri (const struct GNUNET_HELLO_Message *hello,
-                          GNUNET_HELLO_TransportPluginsFind plugins_find);
-
-
-/**
- * Parse a hello URI string to a hello message.
- *
- * @param uri URI string to parse
- * @param pubkey Pointer to struct where public key is parsed
- * @param hello Pointer to struct where hello message is parsed
- * @param plugins_find Function to find transport plugins by name
- * @return #GNUNET_OK on success, #GNUNET_SYSERR if the URI was invalid, 
#GNUNET_NO on other errors
- */
-int
-GNUNET_HELLO_parse_uri (const char *uri,
-                        struct GNUNET_CRYPTO_EddsaPublicKey *pubkey,
-                        struct GNUNET_HELLO_Message **hello,
-                        GNUNET_HELLO_TransportPluginsFind plugins_find);
-
-
-/* NG API */
-#include "gnunet_util_lib.h"
-
-
-/**
- * Build address record by signing raw information with private key.
- *
- * @param address text address to sign
- * @param nt network type of @a address
- * @param mono_time when was @a address valid
- * @param private_key signing key to use
- * @param[out] result where to write address record (allocated)
- * @param[out] result_size set to size of @a result
- */
-void
-GNUNET_HELLO_sign_address (
-  const char *address,
-  enum GNUNET_NetworkType nt,
-  struct GNUNET_TIME_Absolute mono_time,
-  const struct GNUNET_CRYPTO_EddsaPrivateKey *private_key,
-  void **result,
-  size_t *result_size);
-
-
-/**
- * Check signature and extract address record.
- *
- * @param raw raw signed address
- * @param raw_size size of @a raw
- * @param pid public key to use for signature verification
- * @param[out] nt set to network type
- * @param[out] mono_time when was the address generated
- * @return NULL on error, otherwise the address
- */
-char *
-GNUNET_HELLO_extract_address (const void *raw,
-                              size_t raw_size,
-                              const struct GNUNET_PeerIdentity *pid,
-                              enum GNUNET_NetworkType *nt,
-                              struct GNUNET_TIME_Absolute *mono_time);
-
-
-/**
- * Given an address as a string, extract the prefix that identifies
- * the communicator offering transmissions to that address.
- *
- * @param address a peer's address
- * @return NULL if the address is mal-formed, otherwise the prefix
- */
-char *
-GNUNET_HELLO_address_to_prefix (const char *address);
-
-
-#if 0 /* keep Emacsens' auto-indent happy */
-{
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-/* ifndef GNUNET_HELLO_LIB_H */
-#endif
-
-/** @} */ /* end of group */
-
-/** @} */ /* end of group addition */
-
-/* end of gnunet_hello_lib.h */
diff --git a/src/include/gnunet_hello_uri_lib.h 
b/src/include/gnunet_hello_uri_lib.h
index 1c804f590..7ebf75a9e 100644
--- a/src/include/gnunet_hello_uri_lib.h
+++ b/src/include/gnunet_hello_uri_lib.h
@@ -258,6 +258,35 @@ GNUNET_HELLO_dht_msg_to_block (const struct 
GNUNET_MessageHeader *hello,
                                struct GNUNET_TIME_Absolute *block_expiration);
 
 
+/**
+ * Given an address as a string, extract the prefix that identifies
+ * the communicator offering transmissions to that address.
+ *
+ * @param address a peer's address
+ * @return NULL if the address is mal-formed, otherwise the prefix
+ */
+char *
+GNUNET_HELLO_address_to_prefix (const char *address);
+
+/**
+ * Build address record by signing raw information with private key.
+ *
+ * @param address text address to sign
+ * @param nt network type of @a address
+ * @param mono_time when was @a address valid
+ * @param private_key signing key to use
+ * @param[out] result where to write address record (allocated)
+ * @param[out] result_size set to size of @a result
+ */
+void
+GNUNET_HELLO_sign_address (
+  const char *address,
+  enum GNUNET_NetworkType nt,
+  struct GNUNET_TIME_Absolute mono_time,
+  const struct GNUNET_CRYPTO_EddsaPrivateKey *private_key,
+  void **result,
+  size_t *result_size);
+
 #if 0 /* keep Emacsens' auto-indent happy */
 {
 #endif
diff --git a/src/include/gnunet_transport_hello_service.h 
b/src/include/gnunet_transport_hello_service.h
deleted file mode 100644
index 34d3c8e4a..000000000
--- a/src/include/gnunet_transport_hello_service.h
+++ /dev/null
@@ -1,209 +0,0 @@
-/*
-     This file is part of GNUnet.
-     Copyright (C) 2009-2016 GNUnet e.V.
-
-     GNUnet is free software: you can redistribute it and/or modify it
-     under the terms of the GNU Affero General Public License as published
-     by the Free Software Foundation, either version 3 of the License,
-     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
-     Affero General Public License for more details.
-
-     You should have received a copy of the GNU Affero General Public License
-     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-     SPDX-License-Identifier: AGPL3.0-or-later
- */
-
-/**
- * @addtogroup Backbone
- * @{
- *
- * @author Christian Grothoff
- *
- * @file
- * obtain information about our current address
- *
- * @deprecated, in TNG applications should query PEERSTORE directly!
- *
- * @defgroup transport  Transport service
- * address information
- *
- * @see [Documentation](https://gnunet.org/transport-service)
- *
- * @{
- */
-#ifndef GNUNET_TRANSPORT_HELLO_SERVICE_H
-#define GNUNET_TRANSPORT_HELLO_SERVICE_H
-
-#ifdef __cplusplus
-extern "C" {
-#if 0 /* keep Emacsens' auto-indent happy */
-}
-#endif
-#endif
-
-
-#include "gnunet_util_lib.h"
-#include "gnunet_ats_service.h"
-
-/**
- * Version number of the transport API.
- */
-#define GNUNET_TRANSPORT_HELLO_VERSION 0x00000000
-
-
-/**
- * Some addresses contain sensitive information or are
- * not suitable for global distribution.  We use address
- * classes to filter addresses by which domain they make
- * sense to be used in.  These are used in a bitmask.
- */
-enum GNUNET_TRANSPORT_AddressClass
-{
-  /**
-   * No address.
-   */
-  GNUNET_TRANSPORT_AC_NONE = 0,
-
-  /**
-   * Addresses that fall into no other category
-   * (i.e. incoming which we cannot use elsewhere).
-   */
-  GNUNET_TRANSPORT_AC_OTHER = 1,
-
-  /**
-   * Addresses that are global and are insensitive
-   * (i.e. IPv4).
-   */
-  GNUNET_TRANSPORT_AC_GLOBAL = 2,
-
-  /**
-   * Addresses that are global and are sensitive
-   * (i.e. IPv6 with our MAC).
-   */
-  GNUNET_TRANSPORT_AC_GLOBAL_PRIVATE = 4,
-
-  /**
-   * Addresses useful in the local wired network,
-   * i.e. a MAC.  Sensitive, but obvious to people nearby.
-   * Useful for broadcasts.
-   */
-  GNUNET_TRANSPORT_AC_LAN = 8,
-
-  /**
-   * Addresses useful in the local wireless network,
-   * i.e. a MAC.  Sensitive, but obvious to people nearby.
-   * Useful for broadcasts.
-   */
-  GNUNET_TRANSPORT_AC_WLAN = 16,
-
-  /**
-   * Addresses useful in the local bluetooth network.  Sensitive, but
-   * obvious to people nearby.  Useful for broadcasts.
-   */
-  GNUNET_TRANSPORT_AC_BT = 32,
-
-  /**
-   * Bitmask for "any" address.
-   */
-  GNUNET_TRANSPORT_AC_ANY = 65535
-};
-
-
-/**
- * Function called whenever there is an update to the
- * HELLO of this peer.
- *
- * @param cls closure
- * @param hello our updated HELLO
- */
-typedef void (*GNUNET_TRANSPORT_HelloUpdateCallback) (
-  void *cls,
-  const struct GNUNET_MessageHeader *hello);
-
-
-/**
- * Handle to cancel a #GNUNET_TRANSPORT_hello_get() operation.
- */
-struct GNUNET_TRANSPORT_HelloGetHandle;
-
-
-/**
- * Obtain updates on changes to the HELLO message for this peer. The callback
- * given in this function is never called synchronously.
- *
- * @param cfg configuration to use
- * @param ac which network type should the addresses from the HELLO belong to?
- * @param rec function to call with the HELLO
- * @param rec_cls closure for @a rec
- * @return handle to cancel the operation
- */
-struct GNUNET_TRANSPORT_HelloGetHandle *
-GNUNET_TRANSPORT_hello_get (const struct GNUNET_CONFIGURATION_Handle *cfg,
-                            enum GNUNET_TRANSPORT_AddressClass ac,
-                            GNUNET_TRANSPORT_HelloUpdateCallback rec,
-                            void *rec_cls) __attribute__((deprecated));
-
-
-/**
- * Stop receiving updates about changes to our HELLO message.
- *
- * @param ghh handle to cancel
- */
-void
-GNUNET_TRANSPORT_hello_get_cancel (struct
-                                   GNUNET_TRANSPORT_HelloGetHandle *ghh)
-__attribute__((deprecated));
-
-
-/**
- * Function with addresses found in a HELLO.
- *
- * @param cls closure
- * @param peer identity of the peer
- * @param address the address (UTF-8, 0-terminated)
- * @param nt network type of the address
- * @param expiration when does this address expire?
- */
-typedef void (*GNUNET_TRANSPORT_AddressCallback)(
-  void *cls,
-  const struct GNUNET_PeerIdentity *peer,
-  const char *address,
-  enum GNUNET_NetworkType nt,
-  struct GNUNET_TIME_Absolute expiration) __attribute__((deprecated));
-
-
-/**
- * Parse a HELLO message that we have received into its
- * constituent addresses.
- *
- * @param hello message to parse
- * @param cb function to call on each address found
- * @param cb_cls closure for @a cb
- * @return #GNUNET_OK if hello was well-formed, #GNUNET_SYSERR if not
- */
-int
-GNUNET_TRANSPORT_hello_parse (const struct GNUNET_MessageHeader *hello,
-                              GNUNET_TRANSPORT_AddressCallback cb,
-                              void *cb_cls) __attribute__((deprecated));
-
-
-#if 0 /* keep Emacsens' auto-indent happy */
-{
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-/* ifndef GNUNET_TRANSPORT_HELLO_SERVICE_H */
-#endif
-
-/** @} */ /* end of group */
-
-/** @} */ /* end of group addition */
-
-/* end of gnunet_transport_hello_service.h */
diff --git a/src/lib/hello/Makefile.am b/src/lib/hello/Makefile.am
index 4435dba42..cbc193a0a 100644
--- a/src/lib/hello/Makefile.am
+++ b/src/lib/hello/Makefile.am
@@ -9,8 +9,6 @@ endif
 lib_LTLIBRARIES = libgnunethello.la
 
 libgnunethello_la_SOURCES = \
-  address.c \
-  hello-ng.c \
   hello-uri.c
 libgnunethello_la_LIBADD = \
  $(top_builddir)/src/lib/util/libgnunetutil.la $(XLIB) \
diff --git a/src/lib/hello/address.c b/src/lib/hello/address.c
deleted file mode 100644
index 6a1b68029..000000000
--- a/src/lib/hello/address.c
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
-     This file is part of GNUnet.
-     Copyright (C) 2009 GNUnet e.V.
-
-     GNUnet is free software: you can redistribute it and/or modify it
-     under the terms of the GNU Affero General Public License as published
-     by the Free Software Foundation, either version 3 of the License,
-     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
-     Affero General Public License for more details.
-
-     You should have received a copy of the GNU Affero General Public License
-     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-     SPDX-License-Identifier: AGPL3.0-or-later
- */
-
-/**
- * @file hello/address.c
- * @brief helper functions for handling addresses
- * @author Christian Grothoff
- */
-#include "platform.h"
-#include "gnunet_hello_lib.h"
-#include "gnunet_util_lib.h"
-
-
-/**
- * Check if an address has a local option set
- *
- * @param address the address to check
- * @param option the respective option to check for
- * @return #GNUNET_YES or #GNUNET_NO
- */
-int
-GNUNET_HELLO_address_check_option (const struct GNUNET_HELLO_Address *address,
-                                   enum GNUNET_HELLO_AddressInfo option)
-{
-  if (option == (address->local_info & option))
-    return GNUNET_YES;
-  return GNUNET_NO;
-}
-
-
-/**
- * Get the size of an address struct.
- *
- * @param address address
- * @return the size
- */
-size_t
-GNUNET_HELLO_address_get_size (const struct GNUNET_HELLO_Address *address)
-{
-  return sizeof(struct GNUNET_HELLO_Address) + address->address_length
-         + strlen (address->transport_name) + 1;
-}
-
-
-struct GNUNET_HELLO_Address *
-GNUNET_HELLO_address_allocate (const struct GNUNET_PeerIdentity *peer,
-                               const char *transport_name,
-                               const void *address,
-                               size_t address_length,
-                               enum GNUNET_HELLO_AddressInfo local_info)
-{
-  struct GNUNET_HELLO_Address *addr;
-  size_t slen;
-  char *end;
-
-  slen = strlen (transport_name) + 1;
-  addr = GNUNET_malloc (sizeof(struct GNUNET_HELLO_Address)
-                        + address_length + slen);
-  addr->peer = *peer;
-  addr->address = &addr[1];
-  addr->address_length = address_length;
-  addr->local_info = local_info;
-  end = (char *) &addr[1];
-  addr->transport_name = &end[address_length];
-  GNUNET_memcpy (end,
-                 address,
-                 address_length);
-  GNUNET_memcpy (&end[address_length],
-                 transport_name,
-                 slen);
-  return addr;
-}
-
-
-/**
- * Copy an address struct.
- *
- * @param address address to copy
- * @return a copy of the address struct
- */
-struct GNUNET_HELLO_Address *
-GNUNET_HELLO_address_copy (const struct GNUNET_HELLO_Address *address)
-{
-  if (NULL == address)
-    return NULL;
-  return GNUNET_HELLO_address_allocate (&address->peer,
-                                        address->transport_name,
-                                        address->address,
-                                        address->address_length,
-                                        address->local_info);
-}
-
-
-int
-GNUNET_HELLO_address_cmp (const struct GNUNET_HELLO_Address *a1,
-                          const struct GNUNET_HELLO_Address *a2)
-{
-  int ret;
-
-  if ((NULL == a1) &&
-      (NULL == a2))
-    return 0;
-  if (NULL == a1)
-    return 1;
-  if (NULL == a2)
-    return -1;
-  ret = strcmp (a1->transport_name, a2->transport_name);
-  if (0 != ret)
-    return ret;
-  if (a1->local_info != a2->local_info)
-    return (((int) a1->local_info) < ((int) a2->local_info)) ? -1 : 1;
-  if (a1->address_length < a2->address_length)
-    return -1;
-  if (a1->address_length > a2->address_length)
-    return 1;
-  return memcmp (a1->address,
-                 a2->address,
-                 a1->address_length);
-}
-
-
-/* end of address.c */
diff --git a/src/lib/hello/gnunet-hello.c b/src/lib/hello/gnunet-hello.c
index 7f43e77b9..aaa4b5005 100644
--- a/src/lib/hello/gnunet-hello.c
+++ b/src/lib/hello/gnunet-hello.c
@@ -24,7 +24,6 @@
  */
 #include "platform.h"
 #include "gnunet_protocols.h"
-#include "gnunet_hello_lib.h"
 #include "gnunet_hello_uri_lib.h"
 #include "gnunet_transport_plugin.h"
 
diff --git a/src/lib/hello/hello-uri.c b/src/lib/hello/hello-uri.c
index 25f8948fe..4d0cb4ee0 100644
--- a/src/lib/hello/hello-uri.c
+++ b/src/lib/hello/hello-uri.c
@@ -43,6 +43,27 @@
 
 GNUNET_NETWORK_STRUCT_BEGIN
 
+/**
+ * Binary block we sign when we sign an address.
+ */
+struct SignedAddress
+{
+  /**
+   * Purpose must be #GNUNET_SIGNATURE_PURPOSE_TRANSPORT_ADDRESS
+   */
+  struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
+
+  /**
+   * When was the address generated.
+   */
+  struct GNUNET_TIME_AbsoluteNBO mono_time;
+
+  /**
+   * Hash of the address.
+   */
+  struct GNUNET_HashCode addr_hash GNUNET_PACKED;
+};
+
 /**
  * Message signed as part of a HELLO block/URL.
  */
@@ -962,3 +983,63 @@ GNUNET_HELLO_dht_msg_to_block (const struct 
GNUNET_MessageHeader *hello,
   }
   return ret;
 }
+
+
+/**
+ * Given an address as a string, extract the prefix that identifies
+ * the communicator offering transmissions to that address.
+ *
+ * @param address a peer's address
+ * @return NULL if the address is mal-formed, otherwise the prefix
+ */
+char *
+GNUNET_HELLO_address_to_prefix (const char *address)
+{
+  const char *dash;
+
+  dash = strchr (address, '-');
+  if (NULL == dash)
+    return NULL;
+  return GNUNET_strndup (address, dash - address);
+}
+
+
+/**
+ * Build address record by signing raw information with private key.
+ *
+ * @param address text address at @a communicator to sign
+ * @param nt network type of @a address
+ * @param mono_time monotonic time at which @a address was valid
+ * @param private_key signing key to use
+ * @param[out] result where to write address record (allocated)
+ * @param[out] result_size set to size of @a result
+ */
+void
+GNUNET_HELLO_sign_address (
+  const char *address,
+  enum GNUNET_NetworkType nt,
+  struct GNUNET_TIME_Absolute mono_time,
+  const struct GNUNET_CRYPTO_EddsaPrivateKey *private_key,
+  void **result,
+  size_t *result_size)
+{
+  struct SignedAddress sa;
+  struct GNUNET_CRYPTO_EddsaSignature sig;
+  char *sig_str;
+
+  sa.purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_TRANSPORT_ADDRESS);
+  sa.purpose.size = htonl (sizeof(sa));
+  sa.mono_time = GNUNET_TIME_absolute_hton (mono_time);
+  GNUNET_CRYPTO_hash (address, strlen (address), &sa.addr_hash);
+  GNUNET_CRYPTO_eddsa_sign (private_key, &sa, &sig);
+  sig_str = NULL;
+  (void) GNUNET_STRINGS_base64_encode (&sig, sizeof(sig), &sig_str);
+  *result_size =
+    1 + GNUNET_asprintf ((char **) result,
+                         "%s;%llu;%u;%s",
+                         sig_str,
+                         (unsigned long long) mono_time.abs_value_us,
+                         (unsigned int) nt,
+                         address);
+  GNUNET_free (sig_str);
+}
diff --git a/src/lib/hello/hello.c b/src/lib/hello/hello.c
deleted file mode 100644
index 45d27c5d4..000000000
--- a/src/lib/hello/hello.c
+++ /dev/null
@@ -1,1249 +0,0 @@
-/*
-     This file is part of GNUnet.
-     Copyright (C) 2009, 2015 GNUnet e.V.
-
-     GNUnet is free software: you can redistribute it and/or modify it
-     under the terms of the GNU Affero General Public License as published
-     by the Free Software Foundation, either version 3 of the License,
-     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
-     Affero General Public License for more details.
-
-     You should have received a copy of the GNU Affero General Public License
-     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-     SPDX-License-Identifier: AGPL3.0-or-later
- */
-
-/**
- * @file hello/hello.c
- * @brief helper library for handling HELLOs
- * @author Christian Grothoff
- * @author Matthias Wachs
- */
-#include "platform.h"
-#include "gnunet_hello_lib.h"
-#include "gnunet_protocols.h"
-#include "gnunet_util_lib.h"
-#include "gnunet_transport_plugin.h"
-
-/**
- * Context used for building our own URI.
- */
-struct GNUNET_HELLO_ComposeUriContext
-{
-  /**
-   * Final URI.
-   */
-  char *uri;
-
-  /**
-   * Function for finding transport plugins by name.
-   */
-  GNUNET_HELLO_TransportPluginsFind plugins_find;
-};
-
-
-/**
- * Context for #add_address_to_hello().
- */
-struct GNUNET_HELLO_ParseUriContext
-{
-  /**
-   * Position in the URI with the next address to parse.
-   */
-  const char *pos;
-
-  /**
-   * Set to #GNUNET_SYSERR to indicate parse errors.
-   */
-  int ret;
-
-  /**
-   * Counter
-   */
-  unsigned int counter_total;
-
-  /**
-   * Counter skipped addresses
-   */
-  unsigned int counter_added;
-
-  /**
-   * Function for finding transport plugins by name.
-   */
-  GNUNET_HELLO_TransportPluginsFind plugins_find;
-};
-
-
-/**
- * Return HELLO type
- *
- * @param h HELLO Message to test
- * @return #GNUNET_YES for friend-only or #GNUNET_NO otherwise
- */
-int
-GNUNET_HELLO_is_friend_only (const struct GNUNET_HELLO_Message *h)
-{
-  if (GNUNET_YES == ntohl (h->friend_only))
-    return GNUNET_YES;
-  return GNUNET_NO;
-}
-
-
-/**
- * Copy the given address information into
- * the given buffer using the format of HELLOs.
- *
- * @param address the address
- * @param expiration expiration for the @a address
- * @param target where to copy the @a address
- * @param max maximum number of bytes to copy to target
- * @return number of bytes copied, 0 if
- *         the target buffer was not big enough.
- */
-size_t
-GNUNET_HELLO_add_address (const struct GNUNET_HELLO_Address *address,
-                          struct GNUNET_TIME_Absolute expiration,
-                          char *target,
-                          size_t max)
-{
-  uint16_t alen;
-  size_t slen;
-  struct GNUNET_TIME_AbsoluteNBO exp;
-
-  slen = strlen (address->transport_name) + 1;
-  if (slen + sizeof(uint16_t) + sizeof(struct GNUNET_TIME_AbsoluteNBO)
-      + address->address_length > max)
-    return 0;
-  exp = GNUNET_TIME_absolute_hton (expiration);
-  alen = htons ((uint16_t) address->address_length);
-  GNUNET_memcpy (target, address->transport_name, slen);
-  GNUNET_memcpy (&target[slen], &alen, sizeof(uint16_t));
-  slen += sizeof(uint16_t);
-  GNUNET_memcpy (&target[slen], &exp, sizeof(struct GNUNET_TIME_AbsoluteNBO));
-  slen += sizeof(struct GNUNET_TIME_AbsoluteNBO);
-  GNUNET_memcpy (&target[slen], address->address, address->address_length);
-  slen += address->address_length;
-  return slen;
-}
-
-
-/**
- * Get the size of an address entry in a HELLO message.
- *
- * @param buf pointer to the start of the address entry
- * @param max maximum size of the entry (end of @a buf)
- * @param ralen set to the address length
- * @return size of the entry, or 0 if @a max is not large enough
- */
-static size_t
-get_hello_address_size (const char *buf,
-                        size_t max,
-                        uint16_t *ralen)
-{
-  const char *pos;
-  uint16_t alen;
-  size_t left;
-  size_t slen;
-
-  left = max;
-  pos = buf;
-  slen = 1;
-  while ((left > 0) && ('\0' != *pos))
-  {
-    left--;
-    pos++;
-    slen++;
-  }
-  if (0 == left)
-  {
-    /* 0-termination not found */
-    GNUNET_break_op (0);
-    return 0;
-  }
-  pos++;
-  if (left < sizeof(uint16_t) + sizeof(struct GNUNET_TIME_AbsoluteNBO))
-  {
-    /* not enough space for addrlen */
-    GNUNET_break_op (0);
-    return 0;
-  }
-  GNUNET_memcpy (&alen, pos, sizeof(uint16_t));
-  alen = ntohs (alen);
-  *ralen = alen;
-  slen += alen + sizeof(uint16_t) + sizeof(struct GNUNET_TIME_AbsoluteNBO);
-  if (max < slen)
-  {
-    /* not enough space for addr */
-    GNUNET_break_op (0);
-    return 0;
-  }
-  return slen;
-}
-
-
-/**
- * Construct a HELLO message given the public key,
- * expiration time and an iterator that spews the
- * transport addresses.
- *
- * If friend only is set to #GNUNET_YES we create a FRIEND_HELLO which
- * will not be gossiped to other peers.
- *
- * @param public_key public key to include in the HELLO
- * @param addrgen callback to invoke to get addresses
- * @param addrgen_cls closure for @a addrgen
- * @param friend_only should the returned HELLO be only visible to friends?
- * @return the hello message
- */
-struct GNUNET_HELLO_Message *
-GNUNET_HELLO_create (const struct GNUNET_CRYPTO_EddsaPublicKey *public_key,
-                     GNUNET_HELLO_GenerateAddressListCallback addrgen,
-                     void *addrgen_cls,
-                     int friend_only)
-{
-  char buffer[GNUNET_MAX_MESSAGE_SIZE - 1 - 256
-              - sizeof(struct GNUNET_HELLO_Message)];
-  size_t max;
-  size_t used;
-  size_t ret;
-  struct GNUNET_HELLO_Message *hello;
-
-  GNUNET_assert (NULL != public_key);
-  GNUNET_assert ((GNUNET_YES == friend_only) ||
-                 (GNUNET_NO == friend_only));
-  max = sizeof(buffer);
-  used = 0;
-  if (NULL != addrgen)
-  {
-    while (GNUNET_SYSERR != (ret = addrgen (addrgen_cls,
-                                            max,
-                                            &buffer[used])))
-    {
-      max -= ret;
-      used += ret;
-    }
-  }
-  hello = GNUNET_malloc (sizeof(struct GNUNET_HELLO_Message) + used);
-  hello->header.type = htons (GNUNET_MESSAGE_TYPE_HELLO);
-  hello->header.size = htons (sizeof(struct GNUNET_HELLO_Message) + used);
-  hello->friend_only = htonl (friend_only);
-  hello->publicKey = *public_key;
-  GNUNET_memcpy (&hello[1],
-                 buffer,
-                 used);
-  return hello;
-}
-
-
-/**
- * Iterate over all of the addresses in the HELLO.
- *
- * @param msg HELLO to iterate over
- * @param return_modified if a modified copy should be returned,
- *         otherwise NULL will be returned
- * @param it iterator to call on each address
- * @param it_cls closure for @a it
- * @return modified HELLO message
- */
-struct GNUNET_HELLO_Message *
-GNUNET_HELLO_iterate_addresses (const struct GNUNET_HELLO_Message *msg,
-                                int return_modified,
-                                GNUNET_HELLO_AddressIterator it,
-                                void *it_cls)
-{
-  struct GNUNET_HELLO_Address address;
-  uint16_t msize;
-  struct GNUNET_HELLO_Message *ret;
-  const char *inptr;
-  size_t insize;
-  size_t esize;
-  size_t wpos;
-  char *woff;
-  uint16_t alen;
-  struct GNUNET_TIME_AbsoluteNBO expire;
-  int iret;
-
-  msize = GNUNET_HELLO_size (msg);
-  if ((msize < sizeof(struct GNUNET_HELLO_Message)) ||
-      (ntohs (msg->header.type) != GNUNET_MESSAGE_TYPE_HELLO))
-  {
-    GNUNET_break_op (0);
-    return NULL;
-  }
-  ret = NULL;
-  if (return_modified)
-  {
-    ret = GNUNET_malloc (msize);
-    GNUNET_memcpy (ret,
-                   msg,
-                   msize);
-  }
-  inptr = (const char *) &msg[1];
-  insize = msize - sizeof(struct GNUNET_HELLO_Message);
-  wpos = 0;
-  woff = (NULL != ret) ? (char *) &ret[1] : NULL;
-  address.peer.public_key = msg->publicKey;
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "HELLO has %u bytes of address data\n",
-              (unsigned int) insize);
-
-  while (insize > 0)
-  {
-    esize = get_hello_address_size (inptr,
-                                    insize,
-                                    &alen);
-    if (0 == esize)
-    {
-      GNUNET_break (0);
-      GNUNET_free (ret);
-      return NULL;
-    }
-    /* need GNUNET_memcpy() due to possibility of misalignment */
-    GNUNET_memcpy (&expire,
-                   &inptr[esize - alen - sizeof(struct
-                                                GNUNET_TIME_AbsoluteNBO)],
-                   sizeof(struct GNUNET_TIME_AbsoluteNBO));
-    address.address = &inptr[esize - alen];
-    address.address_length = alen;
-    address.transport_name = inptr;
-    address.local_info = GNUNET_HELLO_ADDRESS_INFO_NONE;
-    iret = it (it_cls,
-               &address,
-               GNUNET_TIME_absolute_ntoh (expire));
-    if (GNUNET_SYSERR == iret)
-      break;
-    if ((GNUNET_OK == iret) &&
-        (NULL != ret))
-    {
-      /* copy address over */
-      GNUNET_memcpy (woff,
-                     inptr,
-                     esize);
-      woff += esize;
-      wpos += esize;
-    }
-    insize -= esize;
-    inptr += esize;
-  }
-  if (NULL != ret)
-    ret->header.size = ntohs (sizeof(struct GNUNET_HELLO_Message) + wpos);
-  return ret;
-}
-
-
-/**
- * Closure for #get_match_exp().
- */
-struct ExpireContext
-{
-  /**
-   * Address we are looking for.
-   */
-  const struct GNUNET_HELLO_Address *address;
-
-  /**
-   * Set to #GNUNET_YES if we found the @e address.
-   */
-  int found;
-
-  /**
-   * Set to the expiration of the match if @e found is #GNUNET_YES.
-   */
-  struct GNUNET_TIME_Absolute expiration;
-};
-
-
-/**
- * Store the expiration time of an address that matches the template.
- *
- * @param cls the `struct ExpireContext`
- * @param address address to match against the template
- * @param expiration expiration time of @a address, to store in @a cls
- * @return #GNUNET_SYSERR if we found a matching address, #GNUNET_OK otherwise
- */
-static int
-get_match_exp (void *cls,
-               const struct GNUNET_HELLO_Address *address,
-               struct GNUNET_TIME_Absolute expiration)
-{
-  struct ExpireContext *ec = cls;
-
-  if (0 != GNUNET_HELLO_address_cmp (address,
-                                     ec->address))
-    return GNUNET_OK;
-  ec->found = GNUNET_YES;
-  ec->expiration = expiration;
-  return GNUNET_SYSERR;       /* done here */
-}
-
-
-/**
- * Context for a #GNUNET_HELLO_Merge operation.
- */
-struct MergeContext
-{
-  /**
-   * First HELLO we are merging.
-   */
-  const struct GNUNET_HELLO_Message *h1;
-
-  /**
-   * Second HELLO we are merging.
-   */
-  const struct GNUNET_HELLO_Message *h2;
-
-  /**
-   * Either @e h1 or @e h2, used when copying
-   * to compare against (so we only copy the
-   * most recent entry).
-   */
-  const struct GNUNET_HELLO_Message *other;
-
-  /**
-   * Buffer where we copy to.
-   */
-  char *buf;
-
-  /**
-   * Number of bytes allocated in @e buf
-   */
-  size_t max;
-
-  /**
-   * Current (write) offset in @e buf.
-   */
-  size_t ret;
-
-  /**
-   * Should we copy addresses with an identical value
-   * and expiration time in @e other, or do we only
-   * copy addresses with strictly later expiration times?
-   */
-  int take_equal;
-};
-
-
-/**
- * Append the address @a address to the buffer from
- * the merge context IF it is more recent than equivalent
- * addresses in `other`.
- *
- * @param cls the `struct MergeContext`
- * @param address the HELLO address we might copy
- * @param expiration expiration time for @a address
- * @return always #GNUNET_OK
- */
-static int
-copy_latest (void *cls,
-             const struct GNUNET_HELLO_Address *address,
-             struct GNUNET_TIME_Absolute expiration)
-{
-  struct MergeContext *mc = cls;
-  struct ExpireContext ec;
-
-  ec.address = address;
-  ec.found = GNUNET_NO;
-  /* check if address exists in other */
-  GNUNET_HELLO_iterate_addresses (mc->other,
-                                  GNUNET_NO,
-                                  &get_match_exp,
-                                  &ec);
-  if ((GNUNET_NO == ec.found) ||
-      (ec.expiration.abs_value_us < expiration.abs_value_us) ||
-      ((ec.expiration.abs_value_us == expiration.abs_value_us) &&
-       (GNUNET_YES == mc->take_equal)))
-  {
-    /* copy address to buffer */
-    mc->ret +=
-      GNUNET_HELLO_add_address (address,
-                                expiration,
-                                &mc->buf[mc->ret],
-                                mc->max - mc->ret);
-  }
-  return GNUNET_OK;
-}
-
-
-/**
- * Function called to build the HELLO during
- * #GNUNET_HELLO_merge() by merging addresses from
- * two original HELLOs.
- *
- * @param cls the `struct MergeContext`
- * @param max number of bytes we can write at most in @a buf
- * @param buf where to copy the addresses
- * @return #GNUNET_SYSERR to end iteration, otherwise number of bytes written 
to @a buf
- */
-static ssize_t
-merge_addr (void *cls,
-            size_t max,
-            void *buf)
-{
-  struct MergeContext *mc = cls;
-
-  if (NULL == mc->h1)
-    return GNUNET_SYSERR; /* Stop iteration */
-  mc->ret = 0;
-  mc->max = max;
-  mc->buf = buf;
-  mc->take_equal = GNUNET_NO;
-  mc->other = mc->h2;
-  /* copy addresses from h1, if strictly larger expiration than h2 */
-  GNUNET_HELLO_iterate_addresses (mc->h1,
-                                  GNUNET_NO,
-                                  &copy_latest,
-                                  mc);
-  mc->take_equal = GNUNET_YES;
-  mc->other = mc->h1;
-  /* copy addresses from h2, if larger or equal expiration than h1 */
-  GNUNET_HELLO_iterate_addresses (mc->h2,
-                                  GNUNET_NO,
-                                  &copy_latest,
-                                  mc);
-  /* set marker to stop iteration */
-  mc->h1 = NULL;
-  return mc->ret;
-}
-
-
-struct GNUNET_HELLO_Message *
-GNUNET_HELLO_merge (const struct GNUNET_HELLO_Message *h1,
-                    const struct GNUNET_HELLO_Message *h2)
-{
-  struct MergeContext mc = { h1, h2, NULL, NULL, 0, 0, 0 };
-  int friend_only;
-
-  if (h1->friend_only != h2->friend_only)
-    friend_only = GNUNET_YES; /* One of the HELLOs is friend only */
-  else
-    friend_only = ntohl (h1->friend_only); /* Both HELLO's have the same type 
*/
-
-  return GNUNET_HELLO_create (&h1->publicKey,
-                              &merge_addr,
-                              &mc,
-                              friend_only);
-}
-
-
-/**
- * Context used in #GNUNET_HELLO_iterate_new_addresses() to
- * figure out which addresses are in fact 'new'.
- */
-struct DeltaContext
-{
-  /**
-   * We should ignore addresses that expire before this time.
-   */
-  struct GNUNET_TIME_Absolute expiration_limit;
-
-  /**
-   * Function to call on addresses that are indeed new.
-   */
-  GNUNET_HELLO_AddressIterator it;
-
-  /**
-   * Closure for @e it.
-   */
-  void *it_cls;
-
-  /**
-   * HELLO with known addresses, addresses in this HELLO
-   * we must always ignore.
-   */
-  const struct GNUNET_HELLO_Message *old_hello;
-};
-
-
-/**
- * Check if the given address is 'new', and if so, call
- * the iterator.  Compares the existing address against
- * addresses in the context's `old_hello` and calls the
- * iterator on those that are new (and not expired).
- *
- * @param cls the `struct DeltaContext`
- * @param address an address to check whether it is new
- * @param expiration expiration time for @a address
- * @return #GNUNET_YES if the address is ignored, otherwise
- *         whatever the iterator returned.
- */
-static int
-delta_match (void *cls,
-             const struct GNUNET_HELLO_Address *address,
-             struct GNUNET_TIME_Absolute expiration)
-{
-  struct DeltaContext *dc = cls;
-  int ret;
-  struct ExpireContext ec;
-
-  ec.address = address;
-  ec.found = GNUNET_NO;
-  GNUNET_HELLO_iterate_addresses (dc->old_hello,
-                                  GNUNET_NO,
-                                  &get_match_exp,
-                                  &ec);
-  if ((GNUNET_YES == ec.found) &&
-      ((ec.expiration.abs_value_us > expiration.abs_value_us) ||
-       (ec.expiration.abs_value_us >= dc->expiration_limit.abs_value_us)))
-    return GNUNET_YES;          /* skip: found and boring */
-  ret = dc->it (dc->it_cls,
-                address,
-                expiration);
-  return ret;
-}
-
-
-void
-GNUNET_HELLO_iterate_new_addresses (const struct
-                                    GNUNET_HELLO_Message *new_hello,
-                                    const struct
-                                    GNUNET_HELLO_Message *old_hello,
-                                    struct GNUNET_TIME_Absolute
-                                    expiration_limit,
-                                    GNUNET_HELLO_AddressIterator it,
-                                    void *it_cls)
-{
-  struct DeltaContext dc;
-
-  dc.expiration_limit = expiration_limit;
-  dc.it = it;
-  dc.it_cls = it_cls;
-  dc.old_hello = old_hello;
-  GNUNET_assert (NULL ==
-                 GNUNET_HELLO_iterate_addresses (new_hello,
-                                                 GNUNET_NO,
-                                                 &delta_match,
-                                                 &dc));
-}
-
-
-/**
- * Return the size of the given HELLO message.
- * @param hello to inspect
- * @return the size, 0 if HELLO is invalid
- */
-uint16_t
-GNUNET_HELLO_size (const struct GNUNET_HELLO_Message *hello)
-{
-  uint16_t ret = ntohs (hello->header.size);
-
-  if ((ret < sizeof(struct GNUNET_HELLO_Message)) ||
-      (ntohs (hello->header.type) != GNUNET_MESSAGE_TYPE_HELLO))
-    return 0;
-  return ret;
-}
-
-
-/**
- * Get the peer identity from a HELLO message.
- *
- * @param hello the hello message
- * @param peer where to store the peer's identity
- * @return #GNUNET_SYSERR if the HELLO was malformed
- */
-int
-GNUNET_HELLO_get_id (const struct GNUNET_HELLO_Message *hello,
-                     struct GNUNET_PeerIdentity *peer)
-{
-  uint16_t ret = ntohs (hello->header.size);
-
-  if ((ret < sizeof(struct GNUNET_HELLO_Message)) ||
-      (ntohs (hello->header.type) != GNUNET_MESSAGE_TYPE_HELLO))
-    return GNUNET_SYSERR;
-  peer->public_key = hello->publicKey;
-  return GNUNET_OK;
-}
-
-
-/**
- * Get the header from a HELLO message, used so other code
- * can correctly send HELLO messages.
- *
- * @param hello the hello message
- *
- * @return header or NULL if the HELLO was malformed
- */
-struct GNUNET_MessageHeader *
-GNUNET_HELLO_get_header (struct GNUNET_HELLO_Message *hello)
-{
-  uint16_t ret = ntohs (hello->header.size);
-
-  if ((ret < sizeof(struct GNUNET_HELLO_Message)) ||
-      (ntohs (hello->header.type) != GNUNET_MESSAGE_TYPE_HELLO))
-    return NULL;
-
-  return &hello->header;
-}
-
-
-/**
- * Context used for comparing HELLOs in #GNUNET_HELLO_equals().
- */
-struct EqualsContext
-{
-  /**
-   * Addresses that expired before this date are ignored for
-   * the comparison.
-   */
-  struct GNUNET_TIME_Absolute expiration_limit;
-
-  /**
-   * Earliest expiration time for which we found a match
-   * with a difference in expiration times.
-   * At this time, the two HELLOs may start to diverge.
-   */
-  struct GNUNET_TIME_Absolute result;
-
-  /**
-   * HELLO message to compare against. (First set to the second
-   * HELLO, then set to the first HELLO.)
-   */
-  const struct GNUNET_HELLO_Message *ref;
-
-  /**
-   * Address we are currently looking for.
-   */
-  const struct GNUNET_HELLO_Address *address;
-
-  /**
-   * Expiration time of @e address.
-   */
-  struct GNUNET_TIME_Absolute expiration;
-
-  /**
-   * Did we find the address we were looking for?
-   */
-  int found;
-};
-
-
-/**
- * Check if the given address matches the address we are currently
- * looking for. If so, sets `found` to #GNUNET_YES and, if the
- * expiration times for the two addresses differ, updates `result` to
- * the minimum of our @a expiration and the existing value
- *
- * @param cls the `struct EqualsContext`
- * @param address address from the reference HELLO
- * @param expiration expiration time for @a address
- * @return #GNUNET_YES if the address is expired or does not match
- *         #GNUNET_SYSERR if the address does match.
- */
-static int
-find_other_matching (void *cls,
-                     const struct GNUNET_HELLO_Address *address,
-                     struct GNUNET_TIME_Absolute expiration)
-{
-  struct EqualsContext *ec = cls;
-
-  if (expiration.abs_value_us < ec->expiration_limit.abs_value_us)
-    return GNUNET_YES;
-  if (0 == GNUNET_HELLO_address_cmp (address, ec->address))
-  {
-    ec->found = GNUNET_YES;
-    if (expiration.abs_value_us < ec->expiration.abs_value_us)
-      ec->result = GNUNET_TIME_absolute_min (expiration,
-                                             ec->result);
-    return GNUNET_SYSERR;
-  }
-  return GNUNET_YES;
-}
-
-
-/**
- * Helper function for #GNUNET_HELLO_equals().  Checks
- * if the given @a address exists also in the other HELLO;
- * if not, the result time is set to zero and the iteration
- * is aborted.
- *
- * @param cls the `struct EqualsContext`
- * @param address address to locate
- * @param expiration expiration time of the current address
- * @return #GNUNET_OK if the address exists or is expired,
- *         #GNUNET_SYSERR if it was not found
- */
-static int
-find_matching (void *cls,
-               const struct GNUNET_HELLO_Address *address,
-               struct GNUNET_TIME_Absolute expiration)
-{
-  struct EqualsContext *ec = cls;
-
-  if (expiration.abs_value_us < ec->expiration_limit.abs_value_us)
-    return GNUNET_OK; /* expired, we don't care */
-  ec->address = address;
-  ec->expiration = expiration;
-  ec->found = GNUNET_NO;
-  GNUNET_HELLO_iterate_addresses (ec->ref,
-                                  GNUNET_NO,
-                                  &find_other_matching,
-                                  ec);
-  if (GNUNET_NO == ec->found)
-  {
-    /* not found, we differ *now* */
-    ec->result = GNUNET_TIME_UNIT_ZERO_ABS;
-    return GNUNET_SYSERR;
-  }
-  return GNUNET_OK;
-}
-
-
-/**
- * Test if two HELLO messages contain the same addresses.
- * If they only differ in expiration time, the lowest
- * expiration time larger than @a now where they differ
- * is returned.
- *
- * @param h1 first HELLO message
- * @param h2 the second HELLO message
- * @param now time to use for deciding which addresses have
- *            expired and should not be considered at all
- * @return absolute time forever if the two HELLOs are
- *         totally identical; smallest timestamp >= @a now if
- *         they only differ in timestamps;
- *         zero if the some addresses with expirations >= @a now
- *         do not match at all
- */
-struct GNUNET_TIME_Absolute
-GNUNET_HELLO_equals (const struct GNUNET_HELLO_Message *h1,
-                     const struct GNUNET_HELLO_Message *h2,
-                     struct GNUNET_TIME_Absolute now)
-{
-  struct EqualsContext ec;
-
-  if (h1->header.type != h2->header.type)
-    return GNUNET_TIME_UNIT_ZERO_ABS;
-  if (0 !=
-      GNUNET_memcmp (&h1->publicKey,
-                     &h2->publicKey))
-    return GNUNET_TIME_UNIT_ZERO_ABS;
-  ec.expiration_limit = now;
-  ec.result = GNUNET_TIME_UNIT_FOREVER_ABS;
-  ec.ref = h2;
-  GNUNET_HELLO_iterate_addresses (h1,
-                                  GNUNET_NO,
-                                  &find_matching,
-                                  &ec);
-  if (ec.result.abs_value_us == GNUNET_TIME_UNIT_ZERO.rel_value_us)
-    return ec.result;
-  ec.ref = h1;
-  GNUNET_HELLO_iterate_addresses (h2,
-                                  GNUNET_NO,
-                                  &find_matching,
-                                  &ec);
-  return ec.result;
-}
-
-
-/**
- * Iterator to find the time when the last address will expire.
- * Updates the maximum value stored in @a cls.
- *
- * @param cls where to store the max, a `struct GNUNET_TIME_Absolute`
- * @param address an address (ignored)
- * @param expiration expiration time for @a address
- * @return #GNUNET_OK (always)
- */
-static int
-find_max_expire (void *cls,
-                 const struct GNUNET_HELLO_Address *address,
-                 struct GNUNET_TIME_Absolute expiration)
-{
-  struct GNUNET_TIME_Absolute *max = cls;
-
-  *max = GNUNET_TIME_absolute_max (*max, expiration);
-  return GNUNET_OK;
-}
-
-
-/**
- * When does the last address in the given HELLO expire?
- *
- * @param msg HELLO to inspect
- * @return time the last address expires, 0 if there are no addresses in the 
HELLO
- */
-struct GNUNET_TIME_Absolute
-GNUNET_HELLO_get_last_expiration (const struct GNUNET_HELLO_Message *msg)
-{
-  struct GNUNET_TIME_Absolute ret;
-
-  ret = GNUNET_TIME_UNIT_ZERO_ABS;
-  GNUNET_HELLO_iterate_addresses (msg,
-                                  GNUNET_NO,
-                                  &find_max_expire,
-                                  &ret);
-  return ret;
-}
-
-
-/**
- * GNUnet URIs are of the general form "gnunet://MODULE/IDENTIFIER".
- * The specific structure of "IDENTIFIER" depends on the module and
- * maybe differentiated into additional subcategories if applicable.
- * This module only deals with hello identifiers (MODULE = "hello").
- * <p>
- *
- * The concrete URI format is:
- *
- * "gnunet://hello/PEER[+YYYYMMDDHHMMSS+<TYPE>+<ADDRESS>]...".
- * These URIs can be used to add a peer record to peerinfo service.
- * PEER is the string representation of peer's public key.
- * YYYYMMDDHHMMSS is the expiration date.
- * TYPE is a transport type.
- * ADDRESS is the address, its format depends upon the transport type.
- * The concrete transport types and corresponding address formats are:
- *
- * <ul><li>
- *
- * <TCP|UDP>!IPADDRESS
- * IPVDDRESS is either IPV4 .-delimited address in form of 
XXX.XXX.XXX.XXX:PPPPP
- * or IPV6 :-delimited address  with '[' and ']' (according to RFC2732):
- * [XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX]:PPPPP
- * PPPPP is the port number. May be 0.
- *
- * </li><li>
- *
- * [add SMTP, HTTP and other addresses here]
- *
- * </li></ul>
- *
- * The encoding for hexadecimal values is defined in the crypto_hash.c
- * module in the gnunetutil library and discussed there.
- *
- * Examples:
- *
- * 
gnunet://hello/V8XXK9GAN5ZJFRFQP8MQX3D83BZTSBQVHKWWD0JPE63Z821906EG+20120302010059+TCP+192.168.0.1:2086+TCP+64.23.8.174:0
- * 
gnunet://hello/V8XXK9GAN5ZJFRFQP8MQX3D83BZTSBQVHKWWD0JPE63Z821906EG+20120302010059+TCP+[2001:db8:85a3:8d3:1319:8a2e:370:7348]:2086
- *
- * <p>
- */
-
-
-/**
- * Function that is called on each address of this peer.
- * Expands the corresponding URI string.
- *
- * @param cls the `struct GNUNET_HELLO_ComposeUriContext`
- * @param address address to add
- * @param expiration expiration time for the address
- * @return #GNUNET_OK (continue iteration).
- */
-static int
-add_address_to_uri (void *cls,
-                    const struct GNUNET_HELLO_Address *address,
-                    struct GNUNET_TIME_Absolute expiration)
-{
-  struct GNUNET_HELLO_ComposeUriContext *ctx = cls;
-  struct GNUNET_TRANSPORT_PluginFunctions *papi;
-  const char *addr;
-  char *ret;
-  char *addr_dup;
-  char *pos;
-  char tbuf[16] = "";
-  char *client_str = "_client";
-  struct tm *t;
-  time_t seconds;
-
-  papi = ctx->plugins_find (address->transport_name);
-  if (NULL == papi)
-  {
-    /* Not an error - we might just not have the right plugin. */
-    return GNUNET_OK;
-  }
-  if (NULL == papi->address_to_string)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                "URI conversion not implemented for plugin `%s'\n",
-                address->transport_name);
-    return GNUNET_OK;
-  }
-  addr = papi->address_to_string (papi->cls,
-                                  address->address,
-                                  address->address_length);
-  if ((NULL == addr) ||
-      (0 == strlen (addr)))
-    return GNUNET_OK;
-
-  addr_dup = GNUNET_strdup (addr);
-  if (NULL != (pos = strstr (addr_dup, "_server")))
-    GNUNET_memcpy (pos,
-                   client_str,
-                   strlen (client_str)); /* Replace all server addresses with 
client addresses */
-
-  seconds = expiration.abs_value_us / 1000LL / 1000LL;
-  t = gmtime (&seconds);
-
-  GNUNET_asprintf (&ret,
-                   "%s%c%s%c%s%c%s",
-                   ctx->uri,
-                   GNUNET_HELLO_URI_SEP,
-                   strftime (tbuf,
-                             sizeof(tbuf),
-                             "%Y%m%d%H%M%S",
-                             t) ? tbuf : "0",
-                   GNUNET_HELLO_URI_SEP,
-                   address->transport_name,
-                   GNUNET_HELLO_URI_SEP,
-                   addr_dup);
-  GNUNET_free (addr_dup);
-  GNUNET_free (ctx->uri);
-  ctx->uri = ret;
-  return GNUNET_OK;
-}
-
-
-/**
- * Compose a hello URI string from a hello message.
- *
- * @param hello Hello message
- * @param plugins_find Function to find transport plugins by name
- * @return Hello URI string
- */
-char *
-GNUNET_HELLO_compose_uri (const struct GNUNET_HELLO_Message *hello,
-                          GNUNET_HELLO_TransportPluginsFind plugins_find)
-{
-  struct GNUNET_HELLO_ComposeUriContext ctx;
-  char *pkey;
-
-  ctx.plugins_find = plugins_find;
-  pkey = GNUNET_CRYPTO_eddsa_public_key_to_string (&hello->publicKey);
-  GNUNET_asprintf (&ctx.uri,
-                   "%s%s",
-                   (GNUNET_YES == GNUNET_HELLO_is_friend_only (hello))
-                   ? GNUNET_FRIEND_HELLO_URI_PREFIX
-                   : GNUNET_HELLO_URI_PREFIX,
-                   pkey);
-  GNUNET_free (pkey);
-  GNUNET_HELLO_iterate_addresses (hello,
-                                  GNUNET_NO,
-                                  &add_address_to_uri,
-                                  &ctx);
-  return ctx.uri;
-}
-
-
-/* ************************* Parse HELLO URI ********************* */
-
-
-/**
- * We're building a HELLO.  Parse the next address from the
- * parsing context and append it.
- *
- * @param cls the `struct GNUNET_HELLO_ParseUriContext`
- * @param max number of bytes available for HELLO construction
- * @param buffer where to copy the next address (in binary format)
- * @return number of bytes added to buffer, #GNUNET_SYSERR on error
- */
-static ssize_t
-add_address_to_hello (void *cls,
-                      size_t max,
-                      void *buffer)
-{
-  struct GNUNET_HELLO_ParseUriContext *ctx = cls;
-  const char *tname;
-  const char *address;
-  char *uri_address;
-  const char *end;
-  char *plugin_name;
-  struct tm expiration_time;
-  time_t expiration_seconds;
-  struct GNUNET_TIME_Absolute expire;
-  struct GNUNET_TRANSPORT_PluginFunctions *papi;
-  void *addr;
-  size_t addr_len;
-  struct GNUNET_HELLO_Address haddr;
-  ssize_t ret;
-
-  if (NULL == ctx->pos)
-    return GNUNET_SYSERR;
-  if (GNUNET_HELLO_URI_SEP != ctx->pos[0])
-  {
-    ctx->ret = GNUNET_SYSERR;
-    GNUNET_break (0);
-    return GNUNET_SYSERR;
-  }
-  ctx->pos++;
-
-  if (('0' == ctx->pos[0]) &&
-      (GNUNET_HELLO_URI_SEP == ctx->pos[1]))
-  {
-    expire = GNUNET_TIME_UNIT_FOREVER_ABS;
-    tname = ctx->pos + 1;
-  }
-  else
-  {
-    memset (&expiration_time, 0, sizeof(expiration_time));
-    tname = strptime (ctx->pos,
-                      "%Y%m%d%H%M%S",
-                      &expiration_time);
-    if (NULL == tname)
-    {
-      ctx->ret = GNUNET_SYSERR;
-      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                  _ (
-                    "Failed to parse HELLO message: missing expiration 
time\n"));
-      GNUNET_break (0);
-      return GNUNET_SYSERR;
-    }
-
-    expiration_seconds = mktime (&expiration_time);
-    if (expiration_seconds == (time_t) -1)
-    {
-      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                  _ (
-                    "Failed to parse HELLO message: invalid expiration 
time\n"));
-      ctx->ret = GNUNET_SYSERR;
-      GNUNET_break (0);
-      return GNUNET_SYSERR;
-    }
-    expire.abs_value_us = expiration_seconds * 1000LL * 1000LL;
-  }
-  if (GNUNET_HELLO_URI_SEP != tname[0])
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                _ ("Failed to parse HELLO message: malformed\n"));
-    ctx->ret = GNUNET_SYSERR;
-    GNUNET_break (0);
-    return GNUNET_SYSERR;
-  }
-  tname++;
-  address = strchr (tname,
-                    (int) GNUNET_HELLO_URI_SEP);
-  if (NULL == address)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                _ (
-                  "Failed to parse HELLO message: missing transport 
plugin\n"));
-    ctx->ret = GNUNET_SYSERR;
-    GNUNET_break (0);
-    return GNUNET_SYSERR;
-  }
-  address++;
-  end = strchr (address, (int) GNUNET_HELLO_URI_SEP);
-  ctx->pos = end;
-  ctx->counter_total++;
-  plugin_name = GNUNET_strndup (tname, address - (tname + 1));
-  papi = ctx->plugins_find (plugin_name);
-  if (NULL == papi)
-  {
-    /* Not an error - we might just not have the right plugin.
-     * Skip this part, advance to the next one and recurse.
-     * But only if this is not the end of string.
-     */
-    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                _ ("Plugin `%s' not found, skipping address\n"),
-                plugin_name);
-    GNUNET_free (plugin_name);
-    return 0;
-  }
-  if (NULL == papi->string_to_address)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                _ ("Plugin `%s' does not support URIs yet\n"),
-                plugin_name);
-    GNUNET_free (plugin_name);
-    GNUNET_break (0);
-    return 0;
-  }
-  uri_address = GNUNET_strndup (address, end - address);
-  if (GNUNET_OK !=
-      papi->string_to_address (papi->cls,
-                               uri_address,
-                               strlen (uri_address) + 1,
-                               &addr,
-                               &addr_len))
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                _ ("Failed to parse `%s' as an address for plugin `%s'\n"),
-                uri_address,
-                plugin_name);
-    GNUNET_free (plugin_name);
-    GNUNET_free (uri_address);
-    return 0;
-  }
-  GNUNET_free (uri_address);
-  /* address.peer is unset - not used by add_address() */
-  haddr.address_length = addr_len;
-  haddr.address = addr;
-  haddr.transport_name = plugin_name;
-  ret = GNUNET_HELLO_add_address (&haddr,
-                                  expire,
-                                  buffer,
-                                  max);
-  ctx->counter_added++;
-  GNUNET_free (addr);
-  GNUNET_free (plugin_name);
-  return ret;
-}
-
-
-/**
- * Parse a hello URI string to a hello message.
- *
- * @param uri URI string to parse
- * @param pubkey Pointer to struct where public key is parsed
- * @param hello Pointer to struct where hello message is parsed
- * @param plugins_find Function to find transport plugins by name
- * @return #GNUNET_OK on success, #GNUNET_SYSERR if the URI was invalid, 
#GNUNET_NO on other errors
- */
-int
-GNUNET_HELLO_parse_uri (const char *uri,
-                        struct GNUNET_CRYPTO_EddsaPublicKey *pubkey,
-                        struct GNUNET_HELLO_Message **hello,
-                        GNUNET_HELLO_TransportPluginsFind plugins_find)
-{
-  const char *pks;
-  const char *exc;
-  int friend_only;
-  struct GNUNET_HELLO_ParseUriContext ctx;
-
-  if (0 == strncmp (uri,
-                    GNUNET_HELLO_URI_PREFIX,
-                    strlen (GNUNET_HELLO_URI_PREFIX)))
-  {
-    pks = &uri[strlen (GNUNET_HELLO_URI_PREFIX)];
-    friend_only = GNUNET_NO;
-  }
-  else if (0 == strncmp (uri,
-                         GNUNET_FRIEND_HELLO_URI_PREFIX,
-                         strlen (GNUNET_FRIEND_HELLO_URI_PREFIX)))
-  {
-    pks = &uri[strlen (GNUNET_FRIEND_HELLO_URI_PREFIX)];
-    friend_only = GNUNET_YES;
-  }
-  else
-    return GNUNET_SYSERR;
-  exc = strchr (pks, GNUNET_HELLO_URI_SEP);
-
-  if (GNUNET_OK !=
-      GNUNET_STRINGS_string_to_data (pks,
-                                     (NULL == exc) ? strlen (pks) : (exc - 
pks),
-                                     (unsigned char *) pubkey,
-                                     sizeof(*pubkey)))
-    return GNUNET_SYSERR;
-
-  ctx.pos = exc;
-  ctx.ret = GNUNET_OK;
-  ctx.counter_total = 0;
-  ctx.counter_added = 0;
-  ctx.plugins_find = plugins_find;
-  *hello = GNUNET_HELLO_create (pubkey,
-                                &add_address_to_hello,
-                                &ctx,
-                                friend_only);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "HELLO URI contained %u addresses, added %u addresses\n",
-              ctx.counter_total,
-              ctx.counter_added);
-
-  return ctx.ret;
-}
-
-
-/* end of hello.c */
diff --git a/src/lib/hello/test_friend_hello.c 
b/src/lib/hello/test_friend_hello.c
deleted file mode 100644
index 1b092c0b8..000000000
--- a/src/lib/hello/test_friend_hello.c
+++ /dev/null
@@ -1,185 +0,0 @@
-/*
-     This file is part of GNUnet
-     Copyright (C) 2009 GNUnet e.V.
-
-     GNUnet is free software: you can redistribute it and/or modify it
-     under the terms of the GNU Affero General Public License as published
-     by the Free Software Foundation, either version 3 of the License,
-     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
-     Affero General Public License for more details.
-
-     You should have received a copy of the GNU Affero General Public License
-     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-     SPDX-License-Identifier: AGPL3.0-or-later
- */
-/**
- * @file hello/test_friend_hello.c
- * @brief test for hello.c
- * @author Christian Grothoff
- */
-#include "platform.h"
-#include "gnunet_hello_lib.h"
-
-
-static ssize_t
-my_addr_gen (void *cls,
-             size_t max,
-             void *buf)
-{
-  unsigned int *i = cls;
-  size_t ret;
-  struct GNUNET_HELLO_Address address;
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "DEBUG: my_addr_gen called with i = %d\n", *i);
-  if (0 == *i)
-    return GNUNET_SYSERR; /* Stop iteration */
-  memset (&address.peer, 0, sizeof(struct GNUNET_PeerIdentity));
-  address.address = "address_information";
-  address.transport_name = "test";
-  address.address_length = *i;
-  ret =
-    GNUNET_HELLO_add_address (&address, GNUNET_TIME_absolute_get (), buf,
-                              max);
-  (*i)--;
-  return ret;
-}
-
-
-static int
-check_addr (void *cls,
-            const struct GNUNET_HELLO_Address *address,
-            struct GNUNET_TIME_Absolute expiration)
-{
-  unsigned int *i = cls;
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "DEBUG: check_addr called with i = %d and addrlen = %u\n",
-              *i, (unsigned int) address->address_length);
-  GNUNET_assert (address->address_length > 0);
-  GNUNET_assert (*i & (1 << (address->address_length - 1)));
-  *i -= (1 << (address->address_length - 1));
-  GNUNET_assert (0 ==
-                 strncmp ("address_information", address->address,
-                          address->address_length));
-  GNUNET_assert (0 == strcmp ("test", address->transport_name));
-  return GNUNET_OK;
-}
-
-
-static int
-remove_some (void *cls,
-             const struct GNUNET_HELLO_Address *address,
-             struct GNUNET_TIME_Absolute expiration)
-{
-  unsigned int *i = cls;
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "DEBUG: remove_some called with i = %d and addrlen = %u\n",
-              *i, (unsigned int) address->address_length);
-  GNUNET_assert (address->address_length > 0);
-  if (*i & (1 << (address->address_length - 1)))
-  {
-    *i -= (1 << (address->address_length - 1));
-    return GNUNET_NO;
-  }
-  return GNUNET_OK;
-}
-
-
-int
-main (int argc, char *argv[])
-{
-  struct GNUNET_HELLO_Message *msg1;
-  struct GNUNET_HELLO_Message *msg2;
-  struct GNUNET_HELLO_Message *msg3;
-  struct GNUNET_CRYPTO_EddsaPublicKey publicKey;
-  struct GNUNET_TIME_Absolute startup_time;
-  unsigned int i;
-
-  GNUNET_log_setup ("test-hello", "DEBUG", NULL);
-  startup_time = GNUNET_TIME_absolute_get ();
-  memset (&publicKey, 42, sizeof(publicKey));
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing HELLO creation (without addresses)...\n");
-  i = 0;
-  msg1 = GNUNET_HELLO_create (&publicKey, &my_addr_gen, &i, GNUNET_YES);
-  GNUNET_assert (msg1 != NULL);
-  GNUNET_assert (0 < GNUNET_HELLO_size (msg1));
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing address iteration (empty set)...\n");
-  GNUNET_assert (NULL ==
-                 GNUNET_HELLO_iterate_addresses (msg1, GNUNET_NO, &check_addr,
-                                                 &i));
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing HELLO creation (with one address)...\n");
-  i = 1;
-  msg2 = GNUNET_HELLO_create (&publicKey, &my_addr_gen, &i, GNUNET_YES);
-  GNUNET_assert (msg2 != NULL);
-  GNUNET_assert (GNUNET_HELLO_size (msg1) < GNUNET_HELLO_size (msg2));
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing address iteration (one address)...\n");
-  i = 1;
-  GNUNET_assert (NULL ==
-                 GNUNET_HELLO_iterate_addresses (msg2, GNUNET_NO, &check_addr,
-                                                 &i));
-  GNUNET_assert (i == 0);
-  GNUNET_free (msg1);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing HELLO creation (with two addresses)...\n");
-  i = 2;
-  msg3 = GNUNET_HELLO_create (&publicKey, &my_addr_gen, &i, GNUNET_YES);
-  GNUNET_assert (msg3 != NULL);
-  GNUNET_assert (GNUNET_HELLO_size (msg2) < GNUNET_HELLO_size (msg3));
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing address iteration (two addresses)...\n");
-  i = 3;
-  GNUNET_assert (NULL ==
-                 GNUNET_HELLO_iterate_addresses (msg3, GNUNET_NO, &check_addr,
-                                                 &i));
-  GNUNET_assert (i == 0);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing HELLO merge...\n");
-  msg1 = GNUNET_HELLO_merge (msg2, msg3);
-  GNUNET_assert (GNUNET_HELLO_size (msg1) == GNUNET_HELLO_size (msg3));
-
-  i = 3;
-  GNUNET_assert (NULL ==
-                 GNUNET_HELLO_iterate_addresses (msg1, GNUNET_NO, &check_addr,
-                                                 &i));
-  GNUNET_assert (i == 0);
-  GNUNET_free (msg1);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing address iteration to copy HELLO...\n");
-  i = 2;
-  msg1 = GNUNET_HELLO_iterate_addresses (msg3, GNUNET_YES, &remove_some, &i);
-  GNUNET_assert (msg1 != NULL);
-  GNUNET_assert (i == 0);
-  i = 1;
-  GNUNET_assert (NULL ==
-                 GNUNET_HELLO_iterate_addresses (msg1, GNUNET_NO, &check_addr,
-                                                 &i));
-  GNUNET_assert (i == 0);
-  GNUNET_free (msg1);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing delta address iteration...\n");
-  i = 2;
-  GNUNET_HELLO_iterate_new_addresses (msg3, msg2, startup_time, &check_addr,
-                                      &i);
-  GNUNET_assert (i == 0);
-  GNUNET_free (msg2);
-  GNUNET_free (msg3);
-  return 0;                     /* testcase passed */
-}
diff --git a/src/lib/hello/test_hello-ng.c b/src/lib/hello/test_hello-ng.c
deleted file mode 100644
index ef84e2425..000000000
--- a/src/lib/hello/test_hello-ng.c
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
-     This file is part of GNUnet.
-     Copyright (C) 2022 GNUnet e.V.
-
-     GNUnet is free software: you can redistribute it and/or modify it
-     under the terms of the GNU Affero General Public License as published
-     by the Free Software Foundation, either version 3 of the License,
-     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
-     Affero General Public License for more details.
-
-     You should have received a copy of the GNU Affero General Public License
-     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-     SPDX-License-Identifier: AGPL3.0-or-later
- */
-#include "platform.h"
-#include "gnunet_util_lib.h"
-#include "gnunet_nt_lib.h"
-#include "gnunet_hello_lib.h"
-
-int
-main (int argc,
-      char *argv[])
-{
-  struct GNUNET_CRYPTO_EddsaPublicKey pubKey;
-  struct GNUNET_CRYPTO_EddsaPrivateKey privKey;
-  struct GNUNET_PeerIdentity pid;
-  struct GNUNET_TIME_Absolute t = GNUNET_TIME_absolute_get ();
-  char *res;
-  char *address;
-  size_t res_len;
-  enum GNUNET_NetworkType nt;
-
-  GNUNET_CRYPTO_eddsa_key_create (&privKey);
-  GNUNET_CRYPTO_eddsa_key_get_public (&privKey,
-                                      &pubKey);
-  pid.public_key = pubKey;
-  GNUNET_HELLO_sign_address ("127.0.0.1:8080",
-                             GNUNET_NT_LAN,
-                             t,
-                             &privKey,
-                             (void**) &res,
-                             &res_len);
-  GNUNET_log (GNUNET_ERROR_TYPE_MESSAGE,
-              "%s\n", res);
-  GNUNET_assert (NULL !=
-                 (address =
-                  GNUNET_HELLO_extract_address ((void**) res,
-                                               res_len,
-                                               &pid,
-                                               &nt,
-                                                &t)));
-  GNUNET_free (address);
-  GNUNET_free (res);
-  return 0;
-}
diff --git a/src/lib/hello/test_hello.c b/src/lib/hello/test_hello.c
deleted file mode 100644
index 8631d2af3..000000000
--- a/src/lib/hello/test_hello.c
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
-     This file is part of GNUnet
-     Copyright (C) 2009, 2015 GNUnet e.V.
-
-     GNUnet is free software: you can redistribute it and/or modify it
-     under the terms of the GNU Affero General Public License as published
-     by the Free Software Foundation, either version 3 of the License,
-     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
-     Affero General Public License for more details.
-
-     You should have received a copy of the GNU Affero General Public License
-     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-     SPDX-License-Identifier: AGPL3.0-or-later
- */
-/**
- * @file hello/test_hello.c
- * @brief test for hello.c
- * @author Christian Grothoff
- */
-#include "platform.h"
-#include "gnunet_hello_lib.h"
-
-
-/**
- *
- *
- * @param cls
- * @param max
- * @param buf
- * @return
- */
-static ssize_t
-my_addr_gen (void *cls,
-             size_t max,
-             void *buf)
-{
-  unsigned int *i = cls;
-  size_t ret;
-  struct GNUNET_HELLO_Address address;
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "DEBUG: my_addr_gen called with i = %d\n",
-              *i);
-  if (0 == *i)
-    return GNUNET_SYSERR;
-  memset (&address.peer, 0, sizeof(struct GNUNET_PeerIdentity));
-  address.address = "address_information";
-  address.transport_name = "test";
-  address.address_length = *i;
-  ret = GNUNET_HELLO_add_address (&address,
-                                  GNUNET_TIME_absolute_get (),
-                                  buf,
-                                  max);
-  (*i)--;
-  return ret;
-}
-
-
-/**
- *
- *
- * @param cls
- * @param address
- * @param expiration
- * @return
- */
-static int
-check_addr (void *cls,
-            const struct GNUNET_HELLO_Address *address,
-            struct GNUNET_TIME_Absolute expiration)
-{
-  unsigned int *i = cls;
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "DEBUG: check_addr called with i = %d and addrlen = %u\n",
-              *i,
-              (unsigned int) address->address_length);
-  GNUNET_assert (address->address_length > 0);
-  GNUNET_assert (*i & (1 << (address->address_length - 1)));
-  *i -= (1 << (address->address_length - 1));
-  GNUNET_assert (0 ==
-                 strncmp ("address_information",
-                          address->address,
-                          address->address_length));
-  GNUNET_assert (0 == strcmp ("test",
-                              address->transport_name));
-  return GNUNET_OK;
-}
-
-
-/**
- *
- *
- * @param cls
- * @param address
- * @param expiration
- * @return
- */
-static int
-remove_some (void *cls,
-             const struct GNUNET_HELLO_Address *address,
-             struct GNUNET_TIME_Absolute expiration)
-{
-  unsigned int *i = cls;
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "DEBUG: remove_some called with i = %d and addrlen = %u\n",
-              *i,
-              (unsigned int) address->address_length);
-  GNUNET_assert (address->address_length > 0);
-  if (*i & (1 << (address->address_length - 1)))
-  {
-    *i -= (1 << (address->address_length - 1));
-    return GNUNET_NO;
-  }
-  return GNUNET_OK;
-}
-
-
-int
-main (int argc,
-      char *argv[])
-{
-  struct GNUNET_HELLO_Message *msg1;
-  struct GNUNET_HELLO_Message *msg2;
-  struct GNUNET_HELLO_Message *msg3;
-  struct GNUNET_CRYPTO_EddsaPublicKey publicKey;
-  struct GNUNET_PeerIdentity pid;
-  struct GNUNET_TIME_Absolute startup_time;
-  unsigned int i;
-
-  GNUNET_log_setup ("test-hello",
-                    "DEBUG",
-                    NULL);
-  startup_time = GNUNET_TIME_absolute_get ();
-  memset (&publicKey, 42, sizeof(publicKey));
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing HELLO creation (without addresses)...\n");
-  i = 0;
-  msg1 = GNUNET_HELLO_create (&publicKey,
-                              &my_addr_gen,
-                              &i,
-                              GNUNET_NO);
-  GNUNET_assert (msg1 != NULL);
-  GNUNET_assert (0 < GNUNET_HELLO_size (msg1));
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing address iteration (empty set)...\n");
-  GNUNET_assert (NULL ==
-                 GNUNET_HELLO_iterate_addresses (msg1,
-                                                 GNUNET_NO,
-                                                 &check_addr,
-                                                 &i));
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing HELLO creation (with one address)...\n");
-  i = 1;
-  msg2 = GNUNET_HELLO_create (&publicKey,
-                              &my_addr_gen,
-                              &i,
-                              GNUNET_NO);
-  GNUNET_assert (msg2 != NULL);
-  GNUNET_assert (GNUNET_HELLO_size (msg1) < GNUNET_HELLO_size (msg2));
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing address iteration (one address)...\n");
-  i = 1;
-  GNUNET_assert (NULL ==
-                 GNUNET_HELLO_iterate_addresses (msg2,
-                                                 GNUNET_NO,
-                                                 &check_addr,
-                                                 &i));
-  GNUNET_assert (i == 0);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing get_key from HELLO...\n");
-  GNUNET_assert (GNUNET_OK == GNUNET_HELLO_get_id (msg2, &pid));
-  GNUNET_assert (0 == GNUNET_memcmp (&publicKey,
-                                     &pid.public_key));
-  GNUNET_free (msg1);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing HELLO creation (with two addresses)...\n");
-  i = 2;
-  msg3 = GNUNET_HELLO_create (&publicKey,
-                              &my_addr_gen,
-                              &i,
-                              GNUNET_NO);
-  GNUNET_assert (msg3 != NULL);
-  GNUNET_assert (GNUNET_HELLO_size (msg2) < GNUNET_HELLO_size (msg3));
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing address iteration (two addresses)...\n");
-  i = 3;
-  GNUNET_assert (NULL ==
-                 GNUNET_HELLO_iterate_addresses (msg3,
-                                                 GNUNET_NO,
-                                                 &check_addr,
-                                                 &i));
-  GNUNET_assert (i == 0);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing HELLO merge...\n");
-  msg1 = GNUNET_HELLO_merge (msg2, msg3);
-  GNUNET_assert (GNUNET_HELLO_size (msg1) == GNUNET_HELLO_size (msg3));
-
-  i = 3;
-  GNUNET_assert (NULL ==
-                 GNUNET_HELLO_iterate_addresses (msg1,
-                                                 GNUNET_NO,
-                                                 &check_addr,
-                                                 &i));
-  GNUNET_assert (i == 0);
-  GNUNET_free (msg1);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing address iteration to copy HELLO...\n");
-  i = 2;
-  msg1 = GNUNET_HELLO_iterate_addresses (msg3,
-                                         GNUNET_YES,
-                                         &remove_some,
-                                         &i);
-  GNUNET_assert (msg1 != NULL);
-  GNUNET_assert (i == 0);
-  i = 1;
-  GNUNET_assert (NULL ==
-                 GNUNET_HELLO_iterate_addresses (msg1,
-                                                 GNUNET_NO,
-                                                 &check_addr,
-                                                 &i));
-  GNUNET_assert (i == 0);
-  GNUNET_free (msg1);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Testing delta address iteration...\n");
-  i = 2;
-  GNUNET_HELLO_iterate_new_addresses (msg3,
-                                      msg2,
-                                      startup_time,
-                                      &check_addr,
-                                      &i);
-  GNUNET_assert (i == 0);
-  GNUNET_free (msg2);
-  GNUNET_free (msg3);
-  return 0;                     /* testcase passed */
-}
-
-
-/* end of test_hello.c */
diff --git a/src/service/core/core_api_cmd_connecting_peers.c 
b/src/service/core/core_api_cmd_connecting_peers.c
index ce2184a3c..0dde3d61b 100644
--- a/src/service/core/core_api_cmd_connecting_peers.c
+++ b/src/service/core/core_api_cmd_connecting_peers.c
@@ -28,7 +28,6 @@
 #include "gnunet_testing_ng_lib.h"
 #include "gnunet_testing_netjail_lib.h"
 #include "gnunet_transport_application_service.h"
-#include "gnunet_hello_lib.h"
 #include "gnunet_transport_core_service.h"
 
 /**
diff --git a/src/service/dht/dht_api.c b/src/service/dht/dht_api.c
index 62a8dd0fd..6a218e29d 100644
--- a/src/service/dht/dht_api.c
+++ b/src/service/dht/dht_api.c
@@ -29,7 +29,6 @@
 #include "gnunet_constants.h"
 #include "gnunet_signatures.h"
 #include "gnunet_arm_service.h"
-#include "gnunet_hello_lib.h"
 #include "gnunet_protocols.h"
 #include "gnunet_dht_service.h"
 #include "dht.h"
diff --git a/src/service/dht/test_dht_api.c b/src/service/dht/test_dht_api.c
index 044983b7e..0b51477fe 100644
--- a/src/service/dht/test_dht_api.c
+++ b/src/service/dht/test_dht_api.c
@@ -26,7 +26,6 @@
  */
 #include "platform.h"
 #include "gnunet_util_lib.h"
-#include "gnunet_hello_lib.h"
 #include "gnunet_testing_lib.h"
 #include "gnunet_dht_service.h"
 
diff --git a/src/service/transport/gnunet-service-transport.c 
b/src/service/transport/gnunet-service-transport.c
index ec3019161..5825dff14 100644
--- a/src/service/transport/gnunet-service-transport.c
+++ b/src/service/transport/gnunet-service-transport.c
@@ -77,7 +77,6 @@
 #include "gnunet_statistics_service.h"
 #include "gnunet_transport_monitor_service.h"
 #include "gnunet_peerstore_service.h"
-#include "gnunet_hello_lib.h"
 #include "gnunet_hello_uri_lib.h"
 #include "gnunet_signatures.h"
 #include "transport.h"
diff --git a/src/service/transport/transport-testing-communicator.c 
b/src/service/transport/transport-testing-communicator.c
index 553426b66..168b29ce5 100644
--- a/src/service/transport/transport-testing-communicator.c
+++ b/src/service/transport/transport-testing-communicator.c
@@ -29,7 +29,6 @@
 #include "gnunet_protocols.h"
 #include "gnunet_constants.h"
 #include "transport-testing-communicator.h"
-#include "gnunet_hello_lib.h"
 #include "gnunet_signatures.h"
 #include "transport.h"
 #include <inttypes.h>
diff --git a/src/service/transport/transport-testing2.c 
b/src/service/transport/transport-testing2.c
index afa0b0ad4..b88a2b7e9 100644
--- a/src/service/transport/transport-testing2.c
+++ b/src/service/transport/transport-testing2.c
@@ -247,15 +247,6 @@ notify_connect (void *cls,
 }
 
 
-/**
- * Offer the current HELLO of P2 to P1.
- *
- * @param cls our `struct GNUNET_TRANSPORT_TESTING_ConnectRequest`
- */
-static void
-offer_hello (void *cls);
-
-
 static void
 notify_disconnect (void *cls,
                    const struct GNUNET_PeerIdentity *peer,
@@ -318,9 +309,6 @@ notify_disconnect (void *cls,
     {
       cc->connected = GNUNET_NO;
       /* start trying to connect */
-      if (NULL == cc->tct)
-        cc->tct = GNUNET_SCHEDULER_add_now (&offer_hello,
-                                            cc);
       if (NULL == cc->ah_sh)
         cc->ah_sh = GNUNET_TRANSPORT_application_suggest (cc->p1->ah,
                                                           &p2->id,
@@ -725,45 +713,6 @@ GNUNET_TRANSPORT_TESTING_stop_peer (struct
    }*/
 
 
-static void
-offer_hello (void *cls)
-{
-  struct GNUNET_TRANSPORT_TESTING_ConnectRequest *cc = cls;
-  struct GNUNET_TRANSPORT_TESTING_PeerContext *p1 = cc->p1;
-  struct GNUNET_TRANSPORT_TESTING_PeerContext *p2 = cc->p2;
-  struct GNUNET_TIME_Absolute t;
-  enum GNUNET_NetworkType nt = 0;
-  char *addr;
-
-  cc->tct = NULL;
-  {
-    char *p2_s = GNUNET_strdup (GNUNET_i2s (&p2->id));
-
-    LOG (GNUNET_ERROR_TYPE_DEBUG,
-         "Asking peer %u (`%s') to connect peer %u (`%s'), providing HELLO 
with %s\n",
-         p1->no,
-         GNUNET_i2s (&p1->id),
-         p2->no,
-         p2_s,
-         p2->hello);
-    GNUNET_free (p2_s);
-  }
-
-  addr = GNUNET_HELLO_extract_address (p2->hello,
-                                       p2->hello_size,
-                                       &p2->id,
-                                       &nt,
-                                       &t);
-  GNUNET_assert (NULL != addr);
-  GNUNET_assert (NULL != p1->hello);
-  GNUNET_TRANSPORT_application_validate (p1->ah,
-                                         &p2->id,
-                                         nt,
-                                         addr);
-  GNUNET_free (addr);
-}
-
-
 /**
  * Initiate a connection from p1 to p2 by offering p1 p2's HELLO message
  *
@@ -816,8 +765,6 @@ GNUNET_TRANSPORT_TESTING_connect_peers (struct
   GNUNET_CONTAINER_DLL_insert (tth->cc_head,
                                tth->cc_tail,
                                cc);
-  cc->tct = GNUNET_SCHEDULER_add_now (&offer_hello,
-                                      cc);
   cc->ah_sh = GNUNET_TRANSPORT_application_suggest (cc->p1->ah,
                                                     &p2->id,
                                                     GNUNET_MQ_PRIO_BEST_EFFORT,
diff --git a/src/service/transport/transport-testing2.h 
b/src/service/transport/transport-testing2.h
index 8f1071e8f..a68c9df38 100644
--- a/src/service/transport/transport-testing2.h
+++ b/src/service/transport/transport-testing2.h
@@ -28,7 +28,6 @@
 #define TRANSPORT_TESTING_H
 #include "platform.h"
 #include "gnunet_util_lib.h"
-#include "gnunet_hello_lib.h"
 #include "gnunet_peerstore_service.h"
 #include "gnunet_transport_core_service.h"
 #include "gnunet_transport_application_service.h"
diff --git a/src/service/transport/transport_api2_core.c 
b/src/service/transport/transport_api2_core.c
index 0d2a0ac7f..3eb6c651e 100644
--- a/src/service/transport/transport_api2_core.c
+++ b/src/service/transport/transport_api2_core.c
@@ -27,7 +27,6 @@
 #include "gnunet_util_lib.h"
 #include "gnunet_constants.h"
 #include "gnunet_arm_service.h"
-#include "gnunet_hello_lib.h"
 #include "gnunet_protocols.h"
 #include "gnunet_transport_core_service.h"
 #include "transport.h"
diff --git a/src/service/transport/transport_api_cmd_backchannel_check.c 
b/src/service/transport/transport_api_cmd_backchannel_check.c
index 68bdae69c..388001496 100644
--- a/src/service/transport/transport_api_cmd_backchannel_check.c
+++ b/src/service/transport/transport_api_cmd_backchannel_check.c
@@ -29,7 +29,6 @@
 #include "gnunet_testing_ng_lib.h"
 #include "gnunet_testing_netjail_lib.h"
 #include "gnunet_transport_application_service.h"
-#include "gnunet_hello_lib.h"
 #include "transport-testing-cmds.h"
 
 /**
diff --git a/src/service/transport/transport_api_cmd_connecting_peers.c 
b/src/service/transport/transport_api_cmd_connecting_peers.c
index c59c4b006..c3f63d920 100644
--- a/src/service/transport/transport_api_cmd_connecting_peers.c
+++ b/src/service/transport/transport_api_cmd_connecting_peers.c
@@ -28,7 +28,6 @@
 #include "gnunet_testing_ng_lib.h"
 #include "gnunet_testing_netjail_lib.h"
 #include "gnunet_transport_application_service.h"
-#include "gnunet_hello_lib.h"
 #include "transport-testing-cmds.h"
 
 /**

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