X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fmeshlink.h;h=e0164b7fd7e8bae111743d65484c21d35a40790b;hb=HEAD;hp=98a34bd651d72f9a25a9a6b6aadc4eb9b2b49bc9;hpb=42cef01039177f3c762001439c8fb6bbdcd6e159;p=meshlink

diff --git a/src/meshlink.h b/src/meshlink.h
index 98a34bd6..903bab36 100644
--- a/src/meshlink.h
+++ b/src/meshlink.h
@@ -3,7 +3,7 @@
 
 /*
     meshlink.h -- MeshLink API
-    Copyright (C) 2014-2019 Guus Sliepen <guus@meshlink.io>
+    Copyright (C) 2014-2021 Guus Sliepen <guus@meshlink.io>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -71,7 +71,7 @@ typedef enum {
 	MESHLINK_EPEER,        ///< A peer caused an error
 	MESHLINK_ENOTSUP,      ///< The operation is not supported in the current configuration of MeshLink
 	MESHLINK_EBUSY,        ///< The MeshLink instance is already in use by another process
-	MESHLINK_EBLACKLISTED, ///< The operation is not allowed because the node is blacklisted
+	MESHLINK_EBLACKLISTED  ///< The operation is not allowed because the node is blacklisted
 } meshlink_errno_t;
 
 /// Device class
@@ -83,6 +83,13 @@ typedef enum {
 	DEV_CLASS_COUNT
 } dev_class_t;
 
+/// Storage policy
+typedef enum {
+	MESHLINK_STORAGE_ENABLED,    ///< Store all updates.
+	MESHLINK_STORAGE_DISABLED,   ///< Don't store any updates.
+	MESHLINK_STORAGE_KEYS_ONLY   ///< Only store updates when a node's key has changed.
+} meshlink_storage_policy_t;
+
 /// Invitation flags
 static const uint32_t MESHLINK_INVITE_LOCAL = 1;    // Only use local addresses in the URL
 static const uint32_t MESHLINK_INVITE_PUBLIC = 2;   // Only use public or canonical addresses in the URL
@@ -140,7 +147,7 @@ struct meshlink_channel {
  *                  The pointer is to static storage that is valid for the lifetime of the application.
  *                  This function will always return a valid pointer, even if an invalid error code has been passed.
  */
-extern const char *meshlink_strerror(meshlink_errno_t err) __attribute__((__warn_unused_result__));
+const char *meshlink_strerror(meshlink_errno_t err) __attribute__((__warn_unused_result__));
 
 /// Create a new meshlink_open_params_t struct.
 /** This function allocates and initializes a new meshlink_open_params_t struct that can be passed to meshlink_open_ex().
@@ -151,6 +158,7 @@ extern const char *meshlink_strerror(meshlink_errno_t err) __attribute__((__warn
  *                  After the function returns, the application is free to overwrite or free @a confbase.
  *  @param name     The name which this instance of the application will use in the mesh.
  *                  After the function returns, the application is free to overwrite or free @a name.
+ *                  If NULL is passed as the name, the name used last time the MeshLink instance was initialized is used.
  *  @param appname  The application name which will be used in the mesh.
  *                  After the function returns, the application is free to overwrite or free @a name.
  *  @param devclass The device class which will be used in the mesh.
@@ -158,14 +166,14 @@ extern const char *meshlink_strerror(meshlink_errno_t err) __attribute__((__warn
  *  @return         A pointer to a meshlink_open_params_t which can be passed to meshlink_open_ex(), or NULL in case of an error.
  *                  The pointer is valid until meshlink_open_params_free() is called.
  */
-extern meshlink_open_params_t *meshlink_open_params_init(const char *confbase, const char *name, const char *appname, dev_class_t devclass) __attribute__((__warn_unused_result__));
+meshlink_open_params_t *meshlink_open_params_init(const char *confbase, const char *name, const char *appname, dev_class_t devclass) __attribute__((__warn_unused_result__));
 
 /// Free a meshlink_open_params_t struct.
 /** This function frees a meshlink_open_params_t struct and all resources associated with it.
  *
  *  @param params   A pointer to a meshlink_open_params_t which must have been created earlier with meshlink_open_params_init().
  */
-extern void meshlink_open_params_free(meshlink_open_params_t *params);
+void meshlink_open_params_free(meshlink_open_params_t *params);
 
 /// Set the network namespace MeshLink should use.
 /** This function changes the open parameters to use the given netns filedescriptor.
@@ -173,9 +181,9 @@ extern void meshlink_open_params_free(meshlink_open_params_t *params);
  *  @param params   A pointer to a meshlink_open_params_t which must have been created earlier with meshlink_open_params_init().
  *  @param netns    A filedescriptor that must point to a valid network namespace, or -1 to have MeshLink use the same namespace as the calling thread.
  *
- *  @return         This function will return true if the open parameters have been succesfully updated, false otherwise.
+ *  @return         This function will return true if the open parameters have been successfully updated, false otherwise.
  */
-extern bool meshlink_open_params_set_netns(meshlink_open_params_t *params, int netns) __attribute__((__warn_unused_result__));
+bool meshlink_open_params_set_netns(meshlink_open_params_t *params, int netns) __attribute__((__warn_unused_result__));
 
 /// Set the encryption key MeshLink should use for local storage.
 /** This function changes the open parameters to use the given key for encrypting MeshLink's own configuration files.
@@ -184,9 +192,30 @@ extern bool meshlink_open_params_set_netns(meshlink_open_params_t *params, int n
  *  @param key      A pointer to a key, or NULL in case no encryption should be used.
  *  @param keylen   The length of the given key, or 0 in case no encryption should be used.
  *
- *  @return         This function will return true if the open parameters have been succesfully updated, false otherwise.
+ *  @return         This function will return true if the open parameters have been successfully updated, false otherwise.
+ */
+bool meshlink_open_params_set_storage_key(meshlink_open_params_t *params, const void *key, size_t keylen) __attribute__((__warn_unused_result__));
+
+/// Set the encryption key MeshLink should use for local storage.
+/** This function changes the open parameters to use the given storage policy.
+ *
+ *  @param params   A pointer to a meshlink_open_params_t which must have been created earlier with meshlink_open_params_init().
+ *  @param policy   The storage policy to use.
+ *
+ *  @return         This function will return true if the open parameters have been successfully updated, false otherwise.
  */
-extern bool meshlink_open_params_set_storage_key(meshlink_open_params_t *params, const void *key, size_t keylen) __attribute__((__warn_unused_result__));
+bool meshlink_open_params_set_storage_policy(meshlink_open_params_t *params, meshlink_storage_policy_t policy) __attribute__((__warn_unused_result__));
+
+/// Set the filename of the lockfile.
+/** This function changes the path of the lockfile used to ensure only one instance of MeshLink can be open at the same time.
+ *  If an application changes this, it must always set it to the same location.
+ *
+ *  @param params   A pointer to a meshlink_open_params_t which must have been created earlier with meshlink_open_params_init().
+ *  @param filename The filename of the lockfile.
+ *
+ *  @return         This function will return true if the open parameters have been successfully updated, false otherwise.
+ */
+bool meshlink_open_params_set_lock_filename(meshlink_open_params_t *params, const char *filename) __attribute__((__warn_unused_result__));
 
 /// Open or create a MeshLink instance.
 /** This function opens or creates a MeshLink instance.
@@ -206,7 +235,7 @@ extern bool meshlink_open_params_set_storage_key(meshlink_open_params_t *params,
  *  @return         A pointer to a struct meshlink_handle which represents this instance of MeshLink, or NULL in case of an error.
  *                  The pointer is valid until meshlink_close() is called.
  */
-extern struct meshlink_handle *meshlink_open_ex(const meshlink_open_params_t *params) __attribute__((__warn_unused_result__));
+struct meshlink_handle *meshlink_open_ex(const meshlink_open_params_t *params) __attribute__((__warn_unused_result__));
 
 /// Open or create a MeshLink instance.
 /** This function opens or creates a MeshLink instance.
@@ -228,6 +257,7 @@ extern struct meshlink_handle *meshlink_open_ex(const meshlink_open_params_t *pa
  *                  After the function returns, the application is free to overwrite or free @a confbase.
  *  @param name     The name which this instance of the application will use in the mesh.
  *                  After the function returns, the application is free to overwrite or free @a name.
+ *                  If NULL is passed as the name, the name used last time the MeshLink instance was initialized is used.
  *  @param appname  The application name which will be used in the mesh.
  *                  After the function returns, the application is free to overwrite or free @a name.
  *  @param devclass The device class which will be used in the mesh.
@@ -235,7 +265,7 @@ extern struct meshlink_handle *meshlink_open_ex(const meshlink_open_params_t *pa
  *  @return         A pointer to a struct meshlink_handle which represents this instance of MeshLink, or NULL in case of an error.
  *                  The pointer is valid until meshlink_close() is called.
  */
-extern struct meshlink_handle *meshlink_open(const char *confbase, const char *name, const char *appname, dev_class_t devclass) __attribute__((__warn_unused_result__));
+struct meshlink_handle *meshlink_open(const char *confbase, const char *name, const char *appname, dev_class_t devclass) __attribute__((__warn_unused_result__));
 
 /// Open or create a MeshLink instance that uses encrypted storage.
 /** This function opens or creates a MeshLink instance.
@@ -257,6 +287,7 @@ extern struct meshlink_handle *meshlink_open(const char *confbase, const char *n
  *                  After the function returns, the application is free to overwrite or free @a confbase.
  *  @param name     The name which this instance of the application will use in the mesh.
  *                  After the function returns, the application is free to overwrite or free @a name.
+ *                  If NULL is passed as the name, the name used last time the MeshLink instance was initialized is used.
  *  @param appname  The application name which will be used in the mesh.
  *                  After the function returns, the application is free to overwrite or free @a name.
  *  @param devclass The device class which will be used in the mesh.
@@ -266,7 +297,7 @@ extern struct meshlink_handle *meshlink_open(const char *confbase, const char *n
  *  @return         A pointer to a struct meshlink_handle which represents this instance of MeshLink, or NULL in case of an error.
  *                  The pointer is valid until meshlink_close() is called.
  */
-extern struct meshlink_handle *meshlink_open_encrypted(const char *confbase, const char *name, const char *appname, dev_class_t devclass, const void *key, size_t keylen) __attribute__((__warn_unused_result__));
+struct meshlink_handle *meshlink_open_encrypted(const char *confbase, const char *name, const char *appname, dev_class_t devclass, const void *key, size_t keylen) __attribute__((__warn_unused_result__));
 
 /// Create an ephemeral MeshLink instance that does not store any state.
 /** This function creates a MeshLink instance.
@@ -290,7 +321,7 @@ extern struct meshlink_handle *meshlink_open_encrypted(const char *confbase, con
  *  @return         A pointer to a struct meshlink_handle which represents this instance of MeshLink, or NULL in case of an error.
  *                  The pointer is valid until meshlink_close() is called.
  */
-extern struct meshlink_handle *meshlink_open_ephemeral(const char *name, const char *appname, dev_class_t devclass) __attribute__((__warn_unused_result__));
+struct meshlink_handle *meshlink_open_ephemeral(const char *name, const char *appname, dev_class_t devclass) __attribute__((__warn_unused_result__));
 
 /// Create Sub-Mesh.
 /** This function causes MeshLink to open a new Sub-Mesh network
@@ -319,7 +350,7 @@ struct meshlink_submesh *meshlink_submesh_open(struct meshlink_handle *mesh, con
  *
  *  @return         This function will return true if MeshLink has successfully started, false otherwise.
  */
-extern bool meshlink_start(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+bool meshlink_start(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
 
 /// Stop MeshLink.
 /** This function causes MeshLink to disconnect from all other nodes,
@@ -331,7 +362,7 @@ extern bool meshlink_start(struct meshlink_handle *mesh) __attribute__((__warn_u
  *  \memberof meshlink_handle
  *  @param mesh     A handle which represents an instance of MeshLink.
  */
-extern void meshlink_stop(struct meshlink_handle *mesh);
+void meshlink_stop(struct meshlink_handle *mesh);
 
 /// Close the MeshLink handle.
 /** This function calls meshlink_stop() if necessary,
@@ -345,7 +376,7 @@ extern void meshlink_stop(struct meshlink_handle *mesh);
  * \memberof meshlink_handle
  *  @param mesh     A handle which represents an instance of MeshLink.
  */
-extern void meshlink_close(struct meshlink_handle *mesh);
+void meshlink_close(struct meshlink_handle *mesh);
 
 /// Destroy a MeshLink instance.
 /** This function remove all configuration files of a MeshLink instance. It should only be called when the application
@@ -357,7 +388,22 @@ extern void meshlink_close(struct meshlink_handle *mesh);
  *
  *  @return         This function will return true if the MeshLink instance was successfully destroyed, false otherwise.
  */
-extern bool meshlink_destroy(const char *confbase) __attribute__((__warn_unused_result__));
+bool meshlink_destroy(const char *confbase) __attribute__((__warn_unused_result__));
+
+/// Destroy a MeshLink instance using open parameters.
+/** This function remove all configuration files of a MeshLink instance. It should only be called when the application
+ *  does not have an open handle to this instance. Afterwards, a call to meshlink_open() will create a completely
+ *  new instance.
+ *
+ *  This version expects a pointer to meshlink_open_params_t,
+ *  and will use exactly the same settings used for opening a handle to destroy it.
+ *
+ *  @param params   A pointer to a meshlink_open_params_t which must be filled in by the application.
+ *                  After the function returns, the application is free to reuse or free @a params.
+ *
+ *  @return         This function will return true if the MeshLink instance was successfully destroyed, false otherwise.
+ */
+bool meshlink_destroy_ex(const meshlink_open_params_t *params) __attribute__((__warn_unused_result__));
 
 /// A callback for receiving data from the mesh.
 /** @param mesh      A handle which represents an instance of MeshLink.
@@ -381,7 +427,7 @@ typedef void (*meshlink_receive_cb_t)(struct meshlink_handle *mesh, struct meshl
  *  @param cb        A pointer to the function which will be called when another node sends data to the local node.
  *                   If a NULL pointer is given, the callback will be disabled.
  */
-extern void meshlink_set_receive_cb(struct meshlink_handle *mesh, meshlink_receive_cb_t cb);
+void meshlink_set_receive_cb(struct meshlink_handle *mesh, meshlink_receive_cb_t cb);
 
 /// A callback reporting the meta-connection attempt made by the host node to an another node.
 /** @param mesh      A handle which represents an instance of MeshLink.
@@ -402,7 +448,7 @@ typedef void (*meshlink_connection_try_cb_t)(struct meshlink_handle *mesh, struc
  *  @param cb        A pointer to the function which will be called when host node attempts to make
  *                   the connection to another node. If a NULL pointer is given, the callback will be disabled.
  */
-extern void meshlink_set_connection_try_cb(struct meshlink_handle *mesh, meshlink_connection_try_cb_t cb);
+void meshlink_set_connection_try_cb(struct meshlink_handle *mesh, meshlink_connection_try_cb_t cb);
 
 /// A callback reporting node status changes.
 /** @param mesh      A handle which represents an instance of MeshLink.
@@ -424,7 +470,7 @@ typedef void (*meshlink_node_status_cb_t)(struct meshlink_handle *mesh, struct m
  *  @param cb        A pointer to the function which will be called when another node's status changes.
  *                   If a NULL pointer is given, the callback will be disabled.
  */
-extern void meshlink_set_node_status_cb(struct meshlink_handle *mesh, meshlink_node_status_cb_t cb);
+void meshlink_set_node_status_cb(struct meshlink_handle *mesh, meshlink_node_status_cb_t cb);
 
 /// A callback reporting node path MTU changes.
 /** @param mesh      A handle which represents an instance of MeshLink.
@@ -446,7 +492,7 @@ typedef void (*meshlink_node_pmtu_cb_t)(struct meshlink_handle *mesh, struct mes
  *  @param cb        A pointer to the function which will be called when another node's extended status changes.
  *                   If a NULL pointer is given, the callback will be disabled.
  */
-extern void meshlink_set_node_pmtu_cb(struct meshlink_handle *mesh, meshlink_node_pmtu_cb_t cb);
+void meshlink_set_node_pmtu_cb(struct meshlink_handle *mesh, meshlink_node_pmtu_cb_t cb);
 
 /// A callback reporting duplicate node detection.
 /** @param mesh       A handle which represents an instance of MeshLink.
@@ -467,7 +513,7 @@ typedef void (*meshlink_node_duplicate_cb_t)(struct meshlink_handle *mesh, struc
  *  @param cb        A pointer to the function which will be called when a duplicate node is detected.
  *                   If a NULL pointer is given, the callback will be disabled.
  */
-extern void meshlink_set_node_duplicate_cb(struct meshlink_handle *mesh, meshlink_node_duplicate_cb_t cb);
+void meshlink_set_node_duplicate_cb(struct meshlink_handle *mesh, meshlink_node_duplicate_cb_t cb);
 
 /// Severity of log messages generated by MeshLink.
 typedef enum {
@@ -510,11 +556,11 @@ typedef void (*meshlink_log_cb_t)(struct meshlink_handle *mesh, meshlink_log_lev
  *  @param cb        A pointer to the function which will be called when another node sends data to the local node.
  *                   If a NULL pointer is given, the callback will be disabled.
  */
-extern void meshlink_set_log_cb(struct meshlink_handle *mesh, meshlink_log_level_t level, meshlink_log_cb_t cb);
+void meshlink_set_log_cb(struct meshlink_handle *mesh, meshlink_log_level_t level, meshlink_log_cb_t cb);
 
 /// A callback for receiving error conditions encountered by the MeshLink thread.
 /** @param mesh      A handle which represents an instance of MeshLink, or NULL.
- *  @param errno     The error code describing what kind of error occured.
+ *  @param errno     The error code describing what kind of error occurred.
  */
 typedef void (*meshlink_error_cb_t)(struct meshlink_handle *mesh, meshlink_errno_t meshlink_errno);
 
@@ -542,7 +588,49 @@ typedef void (*meshlink_error_cb_t)(struct meshlink_handle *mesh, meshlink_errno
  *  @param cb        A pointer to the function which will be called when a serious error is encountered.
  *                   If a NULL pointer is given, the callback will be disabled.
  */
-extern void meshlink_set_error_cb(struct meshlink_handle *mesh, meshlink_error_cb_t cb);
+void meshlink_set_error_cb(struct meshlink_handle *mesh, meshlink_error_cb_t cb);
+
+/// A callback for receiving blacklisted conditions encountered by the MeshLink thread.
+/** @param mesh      A handle which represents an instance of MeshLink, or NULL.
+ *  @param node      The node that blacklisted the local node.
+ */
+typedef void (*meshlink_blacklisted_cb_t)(struct meshlink_handle *mesh, struct meshlink_node *node);
+
+/// Set the blacklisted callback.
+/** This functions sets the callback that is called whenever MeshLink detects that it is blacklisted by another node.
+ *
+ *  The callback is run in MeshLink's own thread.
+ *  It is important that the callback uses apprioriate methods (queues, pipes, locking, etc.)
+ *  to hand the data over to the application's thread.
+ *  The callback should also not block itself and return as quickly as possible.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh      A handle which represents an instance of MeshLink, or NULL.
+ *  @param cb        A pointer to the function which will be called when a serious error is encountered.
+ *                   If a NULL pointer is given, the callback will be disabled.
+ */
+void meshlink_set_blacklisted_cb(struct meshlink_handle *mesh, meshlink_blacklisted_cb_t cb);
+
+/// A callback notifying when the MeshLink thread starts and stops.
+/*  @param mesh      A handle which represents an instance of MeshLink, or NULL.
+ *  @param started   True if the MeshLink thread has started, false if it is about to stop.
+ */
+typedef void (*meshlink_thread_status_cb_t)(struct meshlink_handle *mesh, bool started);
+
+/// Set the thread status callback.
+/** This functions sets the callback that is called whenever the MeshLink thread has started or is about to stop.
+ *
+ *  The callback is run in MeshLink's own thread.
+ *  It is important that the callback uses apprioriate methods (queues, pipes, locking, etc.)
+ *  to hand the data over to the application's thread.
+ *  The callback should also not block itself and return as quickly as possible.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh      A handle which represents an instance of MeshLink, or NULL.
+ *  @param cb        A pointer to the function which will be called when a serious error is encountered.
+ *                   If a NULL pointer is given, the callback will be disabled.
+ */
+void meshlink_set_thread_status_cb(struct meshlink_handle *mesh, meshlink_thread_status_cb_t cb);
 
 /// Send data to another node.
 /** This functions sends one packet of data to another node in the mesh.
@@ -563,7 +651,7 @@ extern void meshlink_set_error_cb(struct meshlink_handle *mesh, meshlink_error_c
  *  @return             This function will return true if MeshLink has queued the message for transmission, and false otherwise.
  *                      A return value of true does not guarantee that the message will actually arrive at the destination.
  */
-extern bool meshlink_send(struct meshlink_handle *mesh, struct meshlink_node *destination, const void *data, size_t len) __attribute__((__warn_unused_result__));
+bool meshlink_send(struct meshlink_handle *mesh, struct meshlink_node *destination, const void *data, size_t len) __attribute__((__warn_unused_result__));
 
 /// Query the maximum packet size that can be sent to a node.
 /** This functions returns the maximum size of packets (path MTU) that can be sent to a specific node with meshlink_send().
@@ -579,7 +667,7 @@ extern bool meshlink_send(struct meshlink_handle *mesh, struct meshlink_node *de
  *  @return             The recommended maximum size of packets that are to be sent to the destination node, 0 if the node is unreachable,
  *                      or a negative value in case of an error.
  */
-extern ssize_t meshlink_get_pmtu(struct meshlink_handle *mesh, struct meshlink_node *destination) __attribute__((__warn_unused_result__));
+ssize_t meshlink_get_pmtu(struct meshlink_handle *mesh, struct meshlink_node *destination) __attribute__((__warn_unused_result__));
 
 /// Get a handle for our own node.
 /** This function returns a handle for the local node.
@@ -590,7 +678,7 @@ extern ssize_t meshlink_get_pmtu(struct meshlink_handle *mesh, struct meshlink_n
  *  @return             A pointer to a struct meshlink_node which represents the local node.
  *                      The pointer is guaranteed to be valid until meshlink_close() is called.
  */
-extern struct meshlink_node *meshlink_get_self(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+struct meshlink_node *meshlink_get_self(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
 
 /// Get a handle for a specific node.
 /** This function returns a handle for the node with the given name.
@@ -604,7 +692,7 @@ extern struct meshlink_node *meshlink_get_self(struct meshlink_handle *mesh) __a
  *                      or NULL if the requested node does not exist.
  *                      The pointer is guaranteed to be valid until meshlink_close() is called.
  */
-extern struct meshlink_node *meshlink_get_node(struct meshlink_handle *mesh, const char *name) __attribute__((__warn_unused_result__));
+struct meshlink_node *meshlink_get_node(struct meshlink_handle *mesh, const char *name) __attribute__((__warn_unused_result__));
 
 /// Get a handle for a specific submesh.
 /** This function returns a handle for the submesh with the given name.
@@ -618,7 +706,7 @@ extern struct meshlink_node *meshlink_get_node(struct meshlink_handle *mesh, con
  *                      or NULL if the requested submesh does not exist.
  *                      The pointer is guaranteed to be valid until meshlink_close() is called.
  */
-extern struct meshlink_submesh *meshlink_get_submesh(struct meshlink_handle *mesh, const char *name) __attribute__((__warn_unused_result__));
+struct meshlink_submesh *meshlink_get_submesh(struct meshlink_handle *mesh, const char *name) __attribute__((__warn_unused_result__));
 
 /// Get the fingerprint of a node's public key.
 /** This function returns a fingerprint of the node's public key.
@@ -631,7 +719,7 @@ extern struct meshlink_submesh *meshlink_get_submesh(struct meshlink_handle *mes
  *  @return             A nul-terminated C string containing the fingerprint of the node's public key in a printable ASCII format.
  *                      The application should call free() after it is done using this string.
  */
-extern char *meshlink_get_fingerprint(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
+char *meshlink_get_fingerprint(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
 
 /// Get a list of all nodes.
 /** This function returns a list with handles for all known nodes.
@@ -651,7 +739,7 @@ extern char *meshlink_get_fingerprint(struct meshlink_handle *mesh, struct meshl
  *                      If it is a new value, the old value of @a nodes should not be used anymore.
  *                      If the new value is NULL, then the old array will have been freed by MeshLink.
  */
-extern struct meshlink_node **meshlink_get_all_nodes(struct meshlink_handle *mesh, struct meshlink_node **nodes, size_t *nmemb) __attribute__((__warn_unused_result__));
+struct meshlink_node **meshlink_get_all_nodes(struct meshlink_handle *mesh, struct meshlink_node **nodes, size_t *nmemb) __attribute__((__warn_unused_result__));
 
 /// Sign data using the local node's MeshLink key.
 /** This function signs data using the local node's MeshLink key.
@@ -668,7 +756,7 @@ extern struct meshlink_node **meshlink_get_all_nodes(struct meshlink_handle *mes
  *
  *  @return             This function returns true if the signature was correctly generated, false otherwise.
  */
-extern bool meshlink_sign(struct meshlink_handle *mesh, const void *data, size_t len, void *signature, size_t *siglen) __attribute__((__warn_unused_result__));
+bool meshlink_sign(struct meshlink_handle *mesh, const void *data, size_t len, void *signature, size_t *siglen) __attribute__((__warn_unused_result__));
 
 /// Get the list of all nodes by device class.
 /** This function returns a list with handles for all the nodes that matches with the given @a devclass.
@@ -689,7 +777,7 @@ extern bool meshlink_sign(struct meshlink_handle *mesh, const void *data, size_t
  *                      If it is a new value, the old value of @a nodes should not be used anymore.
  *                      If the new value is NULL, then the old array will have been freed by MeshLink.
  */
-extern struct meshlink_node **meshlink_get_all_nodes_by_dev_class(struct meshlink_handle *mesh, dev_class_t devclass, struct meshlink_node **nodes, size_t *nmemb) __attribute__((__warn_unused_result__));
+struct meshlink_node **meshlink_get_all_nodes_by_dev_class(struct meshlink_handle *mesh, dev_class_t devclass, struct meshlink_node **nodes, size_t *nmemb) __attribute__((__warn_unused_result__));
 
 /// Get the list of all nodes by Submesh.
 /** This function returns a list with handles for all the nodes that matches with the given @a Submesh.
@@ -710,7 +798,7 @@ extern struct meshlink_node **meshlink_get_all_nodes_by_dev_class(struct meshlin
  *                      If it is a new value, the old value of @a nodes should not be used anymore.
  *                      If the new value is NULL, then the old array will have been freed by MeshLink.
  */
-extern struct meshlink_node **meshlink_get_all_nodes_by_submesh(struct meshlink_handle *mesh, struct meshlink_submesh *submesh, struct meshlink_node **nodes, size_t *nmemb) __attribute__((__warn_unused_result__));
+struct meshlink_node **meshlink_get_all_nodes_by_submesh(struct meshlink_handle *mesh, struct meshlink_submesh *submesh, struct meshlink_node **nodes, size_t *nmemb) __attribute__((__warn_unused_result__));
 
 /// Get the list of all nodes by time they were last reachable.
 /** This function returns a list with handles for all the nodes whose last known reachability time overlaps with the given time range.
@@ -734,18 +822,62 @@ extern struct meshlink_node **meshlink_get_all_nodes_by_submesh(struct meshlink_
  *                      If it is a new value, the old value of @a nodes should not be used anymore.
  *                      If the new value is NULL, then the old array will have been freed by MeshLink.
  */
-extern struct meshlink_node **meshlink_get_all_nodes_by_last_reachable(struct meshlink_handle *mesh, time_t start, time_t end, struct meshlink_node **nodes, size_t *nmemb) __attribute__((__warn_unused_result__));
+struct meshlink_node **meshlink_get_all_nodes_by_last_reachable(struct meshlink_handle *mesh, time_t start, time_t end, struct meshlink_node **nodes, size_t *nmemb) __attribute__((__warn_unused_result__));
+
+/// Get the list of all nodes by blacklist status.
+/** This function returns a list with handles for all the nodes who were either blacklisted or whitelisted.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh         A handle which represents an instance of MeshLink.
+ *  @param blacklisted  If true, a list of blacklisted nodes will be returned, otherwise whitelisted nodes.
+ *  @param nodes        A pointer to a previously allocated array of pointers to struct meshlink_node, or NULL in which case MeshLink will allocate a new array.
+ *                      The application can supply an array it allocated itself with malloc, or the return value from the previous call to this function (which is the preferred way).
+ *                      The application is allowed to call free() on the array whenever it wishes.
+ *                      The pointers in the array are valid until meshlink_close() is called.
+ *  @param nmemb        A pointer to a variable holding the number of nodes that were reachable within the period given by @a start and @a end.
+ *                      In case the @a nodes argument is not NULL, MeshLink might call realloc() on the array to change its size.
+ *                      The contents of this variable will be changed to reflect the new size of the array.
+ *
+ *  @return             A pointer to an array containing pointers to all known nodes with the given blacklist status.
+ *                      If the @a nodes argument was not NULL, then the return value can either be the same value or a different value.
+ *                      If it is a new value, the old value of @a nodes should not be used anymore.
+ *                      If the new value is NULL, then the old array will have been freed by MeshLink.
+ */
+struct meshlink_node **meshlink_get_all_nodes_by_blacklisted(struct meshlink_handle *mesh, bool blacklisted, struct meshlink_node **nodes, size_t *nmemb) __attribute__((__warn_unused_result__));
 
 /// Get the node's device class.
 /** This function returns the device class of the given node.
  *
  *  \memberof meshlink_node
  *  @param mesh          A handle which represents an instance of MeshLink.
- *  @param node         A pointer to a struct meshlink_node describing the node.
+ *  @param node          A pointer to a struct meshlink_node describing the node.
  *
  *  @return              This function returns the device class of the @a node, or -1 in case of an error.
  */
-extern dev_class_t meshlink_get_node_dev_class(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
+dev_class_t meshlink_get_node_dev_class(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
+
+/// Get the node's tiny status.
+/** This function returns true if the given node is a tiny node.
+ *  Note that the tiny status of a node will only be known if the node has been reachable at least once.
+ *
+ *  \memberof meshlink_node
+ *  @param mesh          A handle which represents an instance of MeshLink.
+ *  @param node          A pointer to a struct meshlink_node describing the node.
+ *
+ *  @return              This function returns true if the node is a tiny node.
+ */
+bool meshlink_get_node_tiny(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
+
+/// Get the node's blacklist status.
+/** This function returns the given node is blacklisted.
+ *
+ *  \memberof meshlink_node
+ *  @param mesh          A handle which represents an instance of MeshLink.
+ *  @param node          A pointer to a struct meshlink_node describing the node.
+ *
+ *  @return              This function returns true if the node is blacklisted, false otherwise.
+ */
+bool meshlink_get_node_blacklisted(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
 
 /// Get the node's submesh handle.
 /** This function returns the submesh handle of the given node.
@@ -756,7 +888,23 @@ extern dev_class_t meshlink_get_node_dev_class(struct meshlink_handle *mesh, str
  *
  *  @return              This function returns the submesh handle of the @a node, or NULL in case of an error.
  */
-extern struct meshlink_submesh *meshlink_get_node_submesh(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
+struct meshlink_submesh *meshlink_get_node_submesh(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
+
+/// Get a node's reachability status.
+/** This function returns the current reachability of a given node, and the times of the last state changes.
+ *  If a given state change never happened, the time returned will be 0.
+ *
+ *  \memberof meshlink_node
+ *  @param mesh              A handle which represents an instance of MeshLink.
+ *  @param node              A pointer to a struct meshlink_node describing the node.
+ *  @param last_reachable    A pointer to a time_t variable that will be filled in with the last time the node became reachable.
+ *                           Pass NULL to not have anything written.
+ *  @param last_unreachable  A pointer to a time_t variable that will be filled in with the last time the node became unreachable.
+ *                           Pass NULL to not have anything written.
+ *
+ *  @return                  This function returns true if the node is currently reachable, false otherwise.
+ */
+bool meshlink_get_node_reachability(struct meshlink_handle *mesh, struct meshlink_node *node, time_t *last_reachable, time_t *last_unreachable);
 
 /// Verify the signature generated by another node of a piece of data.
 /** This function verifies the signature that another node generated for a piece of data.
@@ -772,7 +920,7 @@ extern struct meshlink_submesh *meshlink_get_node_submesh(struct meshlink_handle
  *
  *  @return             This function returns true if the signature is valid, false otherwise.
  */
-extern bool meshlink_verify(struct meshlink_handle *mesh, struct meshlink_node *source, const void *data, size_t len, const void *signature, size_t siglen) __attribute__((__warn_unused_result__));
+bool meshlink_verify(struct meshlink_handle *mesh, struct meshlink_node *source, const void *data, size_t len, const void *signature, size_t siglen) __attribute__((__warn_unused_result__));
 
 /// Set the canonical Address for a node.
 /** This function sets the canonical Address for a node.
@@ -782,6 +930,8 @@ extern bool meshlink_verify(struct meshlink_handle *mesh, struct meshlink_node *
  *
  *  If a canonical Address is set for the local node,
  *  it will be used for the hostname part of generated invitation URLs.
+ *  If a canonical Address is set for a remote node,
+ *  it is used exclusively for creating outgoing connections to that node.
  *
  *  \memberof meshlink_node
  *  @param mesh         A handle which represents an instance of MeshLink.
@@ -792,10 +942,45 @@ extern bool meshlink_verify(struct meshlink_handle *mesh, struct meshlink_node *
  *
  *  @return             This function returns true if the address was added, false otherwise.
  */
-extern bool meshlink_set_canonical_address(struct meshlink_handle *mesh, struct meshlink_node *node, const char *address, const char *port) __attribute__((__warn_unused_result__));
+bool meshlink_set_canonical_address(struct meshlink_handle *mesh, struct meshlink_node *node, const char *address, const char *port) __attribute__((__warn_unused_result__));
+
+/// Clear the canonical Address for a node.
+/** This function clears the canonical Address for a node.
+ *
+ *  \memberof meshlink_node
+ *  @param mesh         A handle which represents an instance of MeshLink.
+ *  @param node         A pointer to a struct meshlink_node describing the node.
+ *
+ *  @return             This function returns true if the address was removed, false otherwise.
+ */
+bool meshlink_clear_canonical_address(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
+
+/// Add an invitation address for the local node.
+/** This function adds an address for the local node, which will be used only for invitation URLs.
+ *  This address is not stored permanently.
+ *  Multiple addresses can be added using multiple calls to this function.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh         A handle which represents an instance of MeshLink.
+ *  @param address      A nul-terminated C string containing the address, which can be either in numeric format or a hostname.
+ *  @param port         A nul-terminated C string containing the port, which can be either in numeric or symbolic format.
+ *                      If it is NULL, the current listening port's number will be used.
+ *
+ *  @return             This function returns true if the address was added, false otherwise.
+ */
+bool meshlink_add_invitation_address(struct meshlink_handle *mesh, const char *address, const char *port) __attribute__((__warn_unused_result__));
+
+/// Clears all invitation address for the local node.
+/** This function removes all addresses added with meshlink_add_invitation_address().
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh         A handle which represents an instance of MeshLink.
+ */
+void meshlink_clear_invitation_addresses(struct meshlink_handle *mesh);
 
 /// Add an Address for the local node.
 /** This function adds an Address for the local node, which will be used for invitation URLs.
+ *  @deprecated This function is deprecated, use meshlink_set_canonical_address() and/or meshlink_add_invitation_address().
  *
  *  \memberof meshlink_handle
  *  @param mesh         A handle which represents an instance of MeshLink.
@@ -803,7 +988,7 @@ extern bool meshlink_set_canonical_address(struct meshlink_handle *mesh, struct
  *
  *  @return             This function returns true if the address was added, false otherwise.
  */
-extern bool meshlink_add_address(struct meshlink_handle *mesh, const char *address) __attribute__((__warn_unused_result__));
+bool meshlink_add_address(struct meshlink_handle *mesh, const char *address) __attribute__((__warn_unused_result__, __deprecated__("use meshlink_set_canonical_address() and/or meshlink_add_invitation_address() instead")));
 
 /// Try to discover the external address for the local node.
 /** This function performs tries to discover the local node's external address
@@ -827,7 +1012,7 @@ extern bool meshlink_add_address(struct meshlink_handle *mesh, const char *addre
  *                      or NULL if there was an error looking up the address.
  *                      After meshlink_get_external_address() returns, the application is free to overwrite or free this string.
  */
-extern char *meshlink_get_external_address(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+char *meshlink_get_external_address(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
 
 /// Try to discover the external address for the local node.
 /** This function performs tries to discover the local node's external address
@@ -853,7 +1038,7 @@ extern char *meshlink_get_external_address(struct meshlink_handle *mesh) __attri
  *                         or NULL if there was an error looking up the address.
  *                         After meshlink_get_external_address_for_family() returns, the application is free to overwrite or free this string.
  */
-extern char *meshlink_get_external_address_for_family(struct meshlink_handle *mesh, int address_family) __attribute__((__warn_unused_result__));
+char *meshlink_get_external_address_for_family(struct meshlink_handle *mesh, int address_family) __attribute__((__warn_unused_result__));
 
 /// Try to discover the local address for the local node.
 /** This function performs tries to discover the address of the local interface used for outgoing connection.
@@ -876,12 +1061,12 @@ extern char *meshlink_get_external_address_for_family(struct meshlink_handle *me
  *                         or NULL if there was an error looking up the address.
  *                         After meshlink_get_local_address_for_family() returns, the application is free to overwrite or free this string.
  */
-extern char *meshlink_get_local_address_for_family(struct meshlink_handle *mesh, int address_family) __attribute__((__warn_unused_result__));
+char *meshlink_get_local_address_for_family(struct meshlink_handle *mesh, int address_family) __attribute__((__warn_unused_result__));
 
 /// Try to discover the external address for the local node, and add it to its list of addresses.
 /** This function is equivalent to:
  *
- *    meshlink_add_address(mesh, meshlink_get_external_address(mesh));
+ *    meshlink_set_canonical_address(mesh, meshlink_get_self(mesh), meshlink_get_external_address(mesh), NULL);
  *
  *  Read the description of meshlink_get_external_address() for the limitations of this function.
  *
@@ -890,7 +1075,7 @@ extern char *meshlink_get_local_address_for_family(struct meshlink_handle *mesh,
  *
  *  @return             This function returns true if the address was added, false otherwise.
  */
-extern bool meshlink_add_external_address(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+bool meshlink_add_external_address(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
 
 /// Get the network port used by the local node.
 /** This function returns the network port that the local node is listening on.
@@ -900,7 +1085,7 @@ extern bool meshlink_add_external_address(struct meshlink_handle *mesh) __attrib
  *
  *  @return              This function returns the port number, or -1 in case of an error.
  */
-extern int meshlink_get_port(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+int meshlink_get_port(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
 
 /// Set the network port used by the local node.
 /** This function sets the network port that the local node is listening on.
@@ -910,6 +1095,9 @@ extern int meshlink_get_port(struct meshlink_handle *mesh) __attribute__((__warn
  *  that the other nodes may no longer be able to initiate connections to the local node,
  *  since they will try to connect to the previously configured port.
  *
+ *  Note that if a canonical address has been set for the local node,
+ *  you might need to call meshlink_set_canonical_address() again to ensure it includes the new port number.
+ *
  *  \memberof meshlink_handle
  *  @param mesh          A handle which represents an instance of MeshLink.
  *  @param port          The port number to listen on. This must be between 0 and 65535.
@@ -921,7 +1109,7 @@ extern int meshlink_get_port(struct meshlink_handle *mesh) __attribute__((__warn
  *                       is no guarantee that MeshLink is listening on the old port.
  */
 
-extern bool meshlink_set_port(struct meshlink_handle *mesh, int port) __attribute__((__warn_unused_result__));
+bool meshlink_set_port(struct meshlink_handle *mesh, int port) __attribute__((__warn_unused_result__));
 
 /// Set the timeout for invitations.
 /** This function sets the timeout for invitations.
@@ -932,7 +1120,7 @@ extern bool meshlink_set_port(struct meshlink_handle *mesh, int port) __attribut
  *  @param mesh         A handle which represents an instance of MeshLink.
  *  @param timeout      The timeout for invitations in seconds.
  */
-extern void meshlink_set_invitation_timeout(struct meshlink_handle *mesh, int timeout);
+void meshlink_set_invitation_timeout(struct meshlink_handle *mesh, int timeout);
 
 /// Invite another node into the mesh.
 /** This function generates an invitation that can be used by another node to join the same mesh as the local node.
@@ -950,7 +1138,7 @@ extern void meshlink_set_invitation_timeout(struct meshlink_handle *mesh, int ti
  *  @return             This function returns a nul-terminated C string that contains the invitation URL, or NULL in case of an error.
  *                      The application should call free() after it has finished using the URL.
  */
-extern char *meshlink_invite_ex(struct meshlink_handle *mesh, struct meshlink_submesh *submesh, const char *name, uint32_t flags) __attribute__((__warn_unused_result__));
+char *meshlink_invite_ex(struct meshlink_handle *mesh, struct meshlink_submesh *submesh, const char *name, uint32_t flags) __attribute__((__warn_unused_result__));
 
 /// Invite another node into the mesh.
 /** This function generates an invitation that can be used by another node to join the same mesh as the local node.
@@ -969,7 +1157,7 @@ extern char *meshlink_invite_ex(struct meshlink_handle *mesh, struct meshlink_su
  *  @return             This function returns a nul-terminated C string that contains the invitation URL, or NULL in case of an error.
  *                      The application should call free() after it has finished using the URL.
  */
-extern char *meshlink_invite(struct meshlink_handle *mesh, struct meshlink_submesh *submesh, const char *name) __attribute__((__warn_unused_result__));
+char *meshlink_invite(struct meshlink_handle *mesh, struct meshlink_submesh *submesh, const char *name) __attribute__((__warn_unused_result__));
 
 /// Use an invitation to join a mesh.
 /** This function allows the local node to join an existing mesh using an invitation URL generated by another node.
@@ -977,6 +1165,7 @@ extern char *meshlink_invite(struct meshlink_handle *mesh, struct meshlink_subme
  *  After a successfully accepted invitation, the name of the local node may have changed.
  *
  *  This function may only be called on a mesh that has not been started yet and which is not already part of an existing mesh.
+ *  It is not valid to call this function when the storage policy set to MESHLINK_STORAGE_DISABLED.
  *
  *  This function is blocking. It can take several seconds before it returns.
  *  There is no guarantee it will perform a successful join.
@@ -989,7 +1178,7 @@ extern char *meshlink_invite(struct meshlink_handle *mesh, struct meshlink_subme
  *
  *  @return             This function returns true if the local node joined the mesh it was invited to, false otherwise.
  */
-extern bool meshlink_join(struct meshlink_handle *mesh, const char *invitation) __attribute__((__warn_unused_result__));
+bool meshlink_join(struct meshlink_handle *mesh, const char *invitation) __attribute__((__warn_unused_result__));
 
 /// Export the local node's key and addresses.
 /** This function generates a string that contains the local node's public key and one or more IP addresses.
@@ -1005,7 +1194,7 @@ extern bool meshlink_join(struct meshlink_handle *mesh, const char *invitation)
  *  @return             This function returns a nul-terminated C string that contains the exported key and addresses, or NULL in case of an error.
  *                      The application should call free() after it has finished using this string.
  */
-extern char *meshlink_export(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+char *meshlink_export(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
 
 /// Import another node's key and addresses.
 /** This function accepts a string containing the exported public key and addresses of another node.
@@ -1021,7 +1210,7 @@ extern char *meshlink_export(struct meshlink_handle *mesh) __attribute__((__warn
  *
  *  @return             This function returns true if the data was valid and the other node has been granted access to the mesh, false otherwise.
  */
-extern bool meshlink_import(struct meshlink_handle *mesh, const char *data) __attribute__((__warn_unused_result__));
+bool meshlink_import(struct meshlink_handle *mesh, const char *data) __attribute__((__warn_unused_result__));
 
 /// Forget any information about a node.
 /** This function allows the local node to forget any information it has about a node,
@@ -1043,7 +1232,7 @@ extern bool meshlink_import(struct meshlink_handle *mesh, const char *data) __at
  *
  *  @return             This function returns true if all currently known data about the node has been forgotten, false otherwise.
  */
-extern bool meshlink_forget_node(struct meshlink_handle *mesh, struct meshlink_node *node);
+bool meshlink_forget_node(struct meshlink_handle *mesh, struct meshlink_node *node);
 
 /// Blacklist a node from the mesh.
 /** This function causes the local node to blacklist another node.
@@ -1056,7 +1245,7 @@ extern bool meshlink_forget_node(struct meshlink_handle *mesh, struct meshlink_n
  *
  *  @return             This function returns true if the node has been blacklisted, false otherwise.
  */
-extern bool meshlink_blacklist(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
+bool meshlink_blacklist(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
 
 /// Blacklist a node from the mesh by name.
 /** This function causes the local node to blacklist another node by name.
@@ -1071,7 +1260,7 @@ extern bool meshlink_blacklist(struct meshlink_handle *mesh, struct meshlink_nod
  *
  *  @return             This function returns true if the node has been blacklisted, false otherwise.
  */
-extern bool meshlink_blacklist_by_name(struct meshlink_handle *mesh, const char *name) __attribute__((__warn_unused_result__));
+bool meshlink_blacklist_by_name(struct meshlink_handle *mesh, const char *name) __attribute__((__warn_unused_result__));
 
 /// Whitelist a node on the mesh.
 /** This function causes the local node to whitelist a previously blacklisted node.
@@ -1084,7 +1273,7 @@ extern bool meshlink_blacklist_by_name(struct meshlink_handle *mesh, const char
  *
  *  @return             This function returns true if the node has been whitelisted, false otherwise.
  */
-extern bool meshlink_whitelist(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
+bool meshlink_whitelist(struct meshlink_handle *mesh, struct meshlink_node *node) __attribute__((__warn_unused_result__));
 
 /// Whitelist a node on the mesh by name.
 /** This function causes the local node to whitelist a node by name.
@@ -1096,11 +1285,11 @@ extern bool meshlink_whitelist(struct meshlink_handle *mesh, struct meshlink_nod
  *
  *  \memberof meshlink_node
  *  @param mesh         A handle which represents an instance of MeshLink.
- *  @param node         A pointer to a struct meshlink_node describing the node to be whitelisted.
+ *  @param name         The name of the node to whitelist.
  *
  *  @return             This function returns true if the node has been whitelisted, false otherwise.
  */
-extern bool meshlink_whitelist_by_name(struct meshlink_handle *mesh, const char *name) __attribute__((__warn_unused_result__));
+bool meshlink_whitelist_by_name(struct meshlink_handle *mesh, const char *name) __attribute__((__warn_unused_result__));
 
 /// Set whether new nodes are blacklisted by default.
 /** This function sets the blacklist behaviour for newly discovered nodes.
@@ -1113,11 +1302,27 @@ extern bool meshlink_whitelist_by_name(struct meshlink_handle *mesh, const char
  *  @param mesh         A handle which represents an instance of MeshLink.
  *  @param blacklist    True if new nodes are to be blacklisted, false if whitelisted.
  */
-extern void meshlink_set_default_blacklist(struct meshlink_handle *mesh, bool blacklist);
+void meshlink_set_default_blacklist(struct meshlink_handle *mesh, bool blacklist);
 
-/// A callback for accepting incoming channels.
+/// A callback for listening for incoming channels.
 /** This function is called whenever a remote node wants to open a channel to the local node.
- *  The application then has to decide whether to accept or reject this channel.
+ *  This callback should only make a decision whether to accept or reject this channel.
+ *  The accept callback should be set to get a handle to the actual channel.
+ *
+ *  The callback is run in MeshLink's own thread.
+ *  It is therefore important that the callback return quickly and uses apprioriate methods (queues, pipes, locking, etc.)
+ *  to hand any data over to the application's thread.
+ *
+ *  @param mesh         A handle which represents an instance of MeshLink.
+ *  @param node         A handle for the node that wants to open a channel.
+ *  @param port         The port number the peer wishes to connect to.
+ *
+ *  @return             This function should return true if the application accepts the incoming channel, false otherwise.
+ */
+typedef bool (*meshlink_channel_listen_cb_t)(struct meshlink_handle *mesh, struct meshlink_node *node, uint16_t port);
+
+/// A callback for accepting incoming channels.
+/** This function is called whenever a remote node has opened a channel to the local node.
  *
  *  The callback is run in MeshLink's own thread.
  *  It is therefore important that the callback return quickly and uses apprioriate methods (queues, pipes, locking, etc.)
@@ -1167,21 +1372,37 @@ typedef void (*meshlink_channel_receive_cb_t)(struct meshlink_handle *mesh, stru
  */
 typedef void (*meshlink_channel_poll_cb_t)(struct meshlink_handle *mesh, struct meshlink_channel *channel, size_t len);
 
+/// Set the listen callback.
+/** This functions sets the callback that is called whenever another node wants to open a channel to the local node.
+ *  The callback is run in MeshLink's own thread.
+ *  It is therefore important that the callback uses apprioriate methods (queues, pipes, locking, etc.)
+ *  to hand the data over to the application's thread.
+ *  The callback should also not block itself and return as quickly as possible.
+ *
+ *  If no listen or accept callbacks are set, incoming channels are rejected.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh      A handle which represents an instance of MeshLink.
+ *  @param cb        A pointer to the function which will be called when another node want to open a channel.
+ *                   If a NULL pointer is given, the callback will be disabled.
+ */
+void meshlink_set_channel_listen_cb(struct meshlink_handle *mesh, meshlink_channel_listen_cb_t cb);
+
 /// Set the accept callback.
-/** This functions sets the callback that is called whenever another node sends data to the local node.
+/** This functions sets the callback that is called whenever a remote node has opened a channel to the local node.
  *  The callback is run in MeshLink's own thread.
  *  It is therefore important that the callback uses apprioriate methods (queues, pipes, locking, etc.)
  *  to hand the data over to the application's thread.
  *  The callback should also not block itself and return as quickly as possible.
  *
- *  If no accept callback is set, incoming channels are rejected.
+ *  If no listen or accept callbacks are set, incoming channels are rejected.
  *
  *  \memberof meshlink_handle
  *  @param mesh      A handle which represents an instance of MeshLink.
- *  @param cb        A pointer to the function which will be called when another node sends data to the local node.
+ *  @param cb        A pointer to the function which will be called when a new channel has been opened by a remote node.
  *                   If a NULL pointer is given, the callback will be disabled.
  */
-extern void meshlink_set_channel_accept_cb(struct meshlink_handle *mesh, meshlink_channel_accept_cb_t cb);
+void meshlink_set_channel_accept_cb(struct meshlink_handle *mesh, meshlink_channel_accept_cb_t cb);
 
 /// Set the receive callback.
 /** This functions sets the callback that is called whenever another node sends data to the local node.
@@ -1196,7 +1417,7 @@ extern void meshlink_set_channel_accept_cb(struct meshlink_handle *mesh, meshlin
  *  @param cb        A pointer to the function which will be called when another node sends data to the local node.
  *                   If a NULL pointer is given, the callback will be disabled and incoming data is ignored.
  */
-extern void meshlink_set_channel_receive_cb(struct meshlink_handle *mesh, struct meshlink_channel *channel, meshlink_channel_receive_cb_t cb);
+void meshlink_set_channel_receive_cb(struct meshlink_handle *mesh, struct meshlink_channel *channel, meshlink_channel_receive_cb_t cb);
 
 /// Set the poll callback.
 /** This functions sets the callback that is called whenever data can be sent to another node.
@@ -1211,7 +1432,7 @@ extern void meshlink_set_channel_receive_cb(struct meshlink_handle *mesh, struct
  *  @param cb        A pointer to the function which will be called when data can be sent to another node.
  *                   If a NULL pointer is given, the callback will be disabled.
  */
-extern void meshlink_set_channel_poll_cb(struct meshlink_handle *mesh, struct meshlink_channel *channel, meshlink_channel_poll_cb_t cb);
+void meshlink_set_channel_poll_cb(struct meshlink_handle *mesh, struct meshlink_channel *channel, meshlink_channel_poll_cb_t cb);
 
 /// Set the send buffer size of a channel.
 /** This function sets the desired size of the send buffer.
@@ -1221,9 +1442,8 @@ extern void meshlink_set_channel_poll_cb(struct meshlink_handle *mesh, struct me
  *  @param mesh      A handle which represents an instance of MeshLink.
  *  @param channel   A handle for the channel.
  *  @param size      The desired size for the send buffer.
- *                   If a NULL pointer is given, the callback will be disabled.
  */
-extern void meshlink_set_channel_sndbuf(struct meshlink_handle *mesh, struct meshlink_channel *channel, size_t size);
+void meshlink_set_channel_sndbuf(struct meshlink_handle *mesh, struct meshlink_channel *channel, size_t size);
 
 /// Set the receive buffer size of a channel.
 /** This function sets the desired size of the receive buffer.
@@ -1233,9 +1453,47 @@ extern void meshlink_set_channel_sndbuf(struct meshlink_handle *mesh, struct mes
  *  @param mesh      A handle which represents an instance of MeshLink.
  *  @param channel   A handle for the channel.
  *  @param size      The desired size for the send buffer.
- *                   If a NULL pointer is given, the callback will be disabled.
  */
-extern void meshlink_set_channel_rcvbuf(struct meshlink_handle *mesh, struct meshlink_channel *channel, size_t size);
+void meshlink_set_channel_rcvbuf(struct meshlink_handle *mesh, struct meshlink_channel *channel, size_t size);
+
+/// Set the send buffer storage of a channel.
+/** This function provides MeshLink with a send buffer allocated by the application.
+ *  The buffer must be valid until the channel is closed or until this function is called again with a NULL pointer for @a buf.
+ *
+ *  \memberof meshlink_channel
+ *  @param mesh      A handle which represents an instance of MeshLink.
+ *  @param channel   A handle for the channel.
+ *  @param buf       A pointer to the start of the buffer.
+ *                   If a NULL pointer is given, MeshLink will use its own internal buffer again.
+ *  @param size      The size of the buffer.
+ */
+void meshlink_set_channel_sndbuf_storage(struct meshlink_handle *mesh, struct meshlink_channel *channel, void *buf, size_t size);
+
+/// Set the receive buffer storage of a channel.
+/** This function provides MeshLink with a receive buffer allocated by the application.
+ *  The buffer must be valid until the channel is closed or until this function is called again with a NULL pointer for @a buf.
+ *
+ *  \memberof meshlink_channel
+ *  @param mesh      A handle which represents an instance of MeshLink.
+ *  @param channel   A handle for the channel.
+ *  @param buf       A pointer to the start of the buffer.
+ *                   If a NULL pointer is given, MeshLink will use its own internal buffer again.
+ *  @param size      The size of the buffer.
+ */
+void meshlink_set_channel_rcvbuf_storage(struct meshlink_handle *mesh, struct meshlink_channel *channel, void *buf, size_t size);
+
+/// Set the flags of a channel.
+/** This function allows changing some of the channel flags.
+ *  Currently only MESHLINK_CHANNEL_NO_PARTIAL and MESHLINK_CHANNEL_DROP_LATE are supported, other flags are ignored.
+ *  These flags only affect the local side of the channel with the peer.
+ *  The changes take effect immediately.
+ *
+ *  \memberof meshlink_channel
+ *  @param mesh      A handle which represents an instance of MeshLink.
+ *  @param channel   A handle for the channel.
+ *  @param flags     A bitwise-or'd combination of flags that set the semantics for this channel.
+ */
+void meshlink_set_channel_flags(struct meshlink_handle *mesh, struct meshlink_channel *channel, uint32_t flags);
 
 /// Open a reliable stream channel to another node.
 /** This function is called whenever a remote node wants to open a channel to the local node.
@@ -1260,7 +1518,7 @@ extern void meshlink_set_channel_rcvbuf(struct meshlink_handle *mesh, struct mes
  *  @return             A handle for the channel, or NULL in case of an error.
  *                      The handle is valid until meshlink_channel_close() is called.
  */
-extern struct meshlink_channel *meshlink_channel_open_ex(struct meshlink_handle *mesh, struct meshlink_node *node, uint16_t port, meshlink_channel_receive_cb_t cb, const void *data, size_t len, uint32_t flags) __attribute__((__warn_unused_result__));
+struct meshlink_channel *meshlink_channel_open_ex(struct meshlink_handle *mesh, struct meshlink_node *node, uint16_t port, meshlink_channel_receive_cb_t cb, const void *data, size_t len, uint32_t flags) __attribute__((__warn_unused_result__));
 
 /// Open a reliable stream channel to another node.
 /** This function is called whenever a remote node wants to open a channel to the local node.
@@ -1287,7 +1545,7 @@ extern struct meshlink_channel *meshlink_channel_open_ex(struct meshlink_handle
  *  @return             A handle for the channel, or NULL in case of an error.
  *                      The handle is valid until meshlink_channel_close() is called.
  */
-extern struct meshlink_channel *meshlink_channel_open(struct meshlink_handle *mesh, struct meshlink_node *node, uint16_t port, meshlink_channel_receive_cb_t cb, const void *data, size_t len) __attribute__((__warn_unused_result__));
+struct meshlink_channel *meshlink_channel_open(struct meshlink_handle *mesh, struct meshlink_node *node, uint16_t port, meshlink_channel_receive_cb_t cb, const void *data, size_t len) __attribute__((__warn_unused_result__));
 
 /// Partially close a reliable stream channel.
 /** This shuts down the read or write side of a channel, or both, without closing the handle.
@@ -1301,12 +1559,11 @@ extern struct meshlink_channel *meshlink_channel_open(struct meshlink_handle *me
  *  @param channel      A handle for the channel.
  *  @param direction    Must be one of SHUT_RD, SHUT_WR or SHUT_RDWR, otherwise this call will not have any affect.
  */
-extern void meshlink_channel_shutdown(struct meshlink_handle *mesh, struct meshlink_channel *channel, int direction);
+void meshlink_channel_shutdown(struct meshlink_handle *mesh, struct meshlink_channel *channel, int direction);
 
 /// Close a reliable stream channel.
 /** This informs the remote node that the local node has finished sending all data on the channel.
  *  It also causes the local node to stop accepting incoming data from the remote node.
- *  It will free the struct meshlink_channel and all associated resources.
  *  Afterwards, the channel handle is invalid and must not be used any more.
  *
  *  It is allowed to call this function at any time on a valid handle, even inside callback functions.
@@ -1316,7 +1573,22 @@ extern void meshlink_channel_shutdown(struct meshlink_handle *mesh, struct meshl
  *  @param mesh         A handle which represents an instance of MeshLink.
  *  @param channel      A handle for the channel.
  */
-extern void meshlink_channel_close(struct meshlink_handle *mesh, struct meshlink_channel *channel);
+void meshlink_channel_close(struct meshlink_handle *mesh, struct meshlink_channel *channel);
+
+/// Abort a reliable stream channel.
+/** This aborts a channel.
+ *  Data that was in the send and receive buffers is dropped, so potentially there is some data that
+ *  was sent on this channel that will not be received by the peer.
+ *  Afterwards, the channel handle is invalid and must not be used any more.
+ *
+ *  It is allowed to call this function at any time on a valid handle, even inside callback functions.
+ *  If called with a valid handle, this function always succeeds, otherwise the result is undefined.
+ *
+ *  \memberof meshlink_channel
+ *  @param mesh         A handle which represents an instance of MeshLink.
+ *  @param channel      A handle for the channel.
+ */
+void meshlink_channel_abort(struct meshlink_handle *mesh, struct meshlink_channel *channel);
 
 /// Transmit data on a channel
 /** This queues data to send to the remote node.
@@ -1332,7 +1604,7 @@ extern void meshlink_channel_close(struct meshlink_handle *mesh, struct meshlink
  *                      If MESHLINK_CHANNEL_NO_PARTIAL is set, then the result will either be len,
  *                      0 if the buffer is currently too full, or -1 if len is too big even for an empty buffer.
  */
-extern ssize_t meshlink_channel_send(struct meshlink_handle *mesh, struct meshlink_channel *channel, const void *data, size_t len) __attribute__((__warn_unused_result__));
+ssize_t meshlink_channel_send(struct meshlink_handle *mesh, struct meshlink_channel *channel, const void *data, size_t len) __attribute__((__warn_unused_result__));
 
 /// A callback for cleaning up buffers submitted for asynchronous I/O.
 /** This callbacks signals that MeshLink has finished using this buffer.
@@ -1374,7 +1646,7 @@ typedef void (*meshlink_aio_fd_cb_t)(struct meshlink_handle *mesh, struct meshli
  *
  *  @return             True if the buffer was enqueued, false otherwise.
  */
-extern bool meshlink_channel_aio_send(struct meshlink_handle *mesh, struct meshlink_channel *channel, const void *data, size_t len, meshlink_aio_cb_t cb, void *priv) __attribute__((__warn_unused_result__));
+bool meshlink_channel_aio_send(struct meshlink_handle *mesh, struct meshlink_channel *channel, const void *data, size_t len, meshlink_aio_cb_t cb, void *priv) __attribute__((__warn_unused_result__));
 
 /// Transmit data on a channel asynchronously from a filedescriptor
 /** This will read up to the specified length number of bytes from the given filedescriptor, and send it over the channel.
@@ -1391,7 +1663,7 @@ extern bool meshlink_channel_aio_send(struct meshlink_handle *mesh, struct meshl
  *
  *  @return             True if the buffer was enqueued, false otherwise.
  */
-extern bool meshlink_channel_aio_fd_send(struct meshlink_handle *mesh, struct meshlink_channel *channel, int fd, size_t len, meshlink_aio_fd_cb_t cb, void *priv) __attribute__((__warn_unused_result__));
+bool meshlink_channel_aio_fd_send(struct meshlink_handle *mesh, struct meshlink_channel *channel, int fd, size_t len, meshlink_aio_fd_cb_t cb, void *priv) __attribute__((__warn_unused_result__));
 
 /// Receive data on a channel asynchronously
 /** This registers a buffer that will be filled with incoming channel data.
@@ -1410,7 +1682,7 @@ extern bool meshlink_channel_aio_fd_send(struct meshlink_handle *mesh, struct me
  *
  *  @return             True if the buffer was enqueued, false otherwise.
  */
-extern bool meshlink_channel_aio_receive(struct meshlink_handle *mesh, struct meshlink_channel *channel, const void *data, size_t len, meshlink_aio_cb_t cb, void *priv) __attribute__((__warn_unused_result__));
+bool meshlink_channel_aio_receive(struct meshlink_handle *mesh, struct meshlink_channel *channel, const void *data, size_t len, meshlink_aio_cb_t cb, void *priv) __attribute__((__warn_unused_result__));
 
 /// Receive data on a channel asynchronously and send it to a filedescriptor
 /** This will read up to the specified length number of bytes from the channel, and send it to the filedescriptor.
@@ -1427,7 +1699,7 @@ extern bool meshlink_channel_aio_receive(struct meshlink_handle *mesh, struct me
  *
  *  @return             True if the buffer was enqueued, false otherwise.
  */
-extern bool meshlink_channel_aio_fd_receive(struct meshlink_handle *mesh, struct meshlink_channel *channel, int fd, size_t len, meshlink_aio_fd_cb_t cb, void *priv) __attribute__((__warn_unused_result__));
+bool meshlink_channel_aio_fd_receive(struct meshlink_handle *mesh, struct meshlink_channel *channel, int fd, size_t len, meshlink_aio_fd_cb_t cb, void *priv) __attribute__((__warn_unused_result__));
 
 /// Get channel flags.
 /** This returns the flags used when opening this channel.
@@ -1438,7 +1710,7 @@ extern bool meshlink_channel_aio_fd_receive(struct meshlink_handle *mesh, struct
  *
  *  @return             The flags set for this channel.
  */
-extern uint32_t meshlink_channel_get_flags(struct meshlink_handle *mesh, struct meshlink_channel *channel) __attribute__((__warn_unused_result__));
+uint32_t meshlink_channel_get_flags(struct meshlink_handle *mesh, struct meshlink_channel *channel) __attribute__((__warn_unused_result__));
 
 /// Get the amount of bytes in the send buffer.
 /** This returns the amount of bytes in the send buffer.
@@ -1450,7 +1722,7 @@ extern uint32_t meshlink_channel_get_flags(struct meshlink_handle *mesh, struct
  *
  *  @return             The amount of un-ACKed bytes in the send buffer.
  */
-extern size_t meshlink_channel_get_sendq(struct meshlink_handle *mesh, struct meshlink_channel *channel) __attribute__((__warn_unused_result__));
+size_t meshlink_channel_get_sendq(struct meshlink_handle *mesh, struct meshlink_channel *channel) __attribute__((__warn_unused_result__));
 
 /// Get the amount of bytes in the receive buffer.
 /** This returns the amount of bytes in the receive buffer.
@@ -1462,7 +1734,18 @@ extern size_t meshlink_channel_get_sendq(struct meshlink_handle *mesh, struct me
  *
  *  @return             The amount of bytes in the receive buffer.
  */
-extern size_t meshlink_channel_get_recvq(struct meshlink_handle *mesh, struct meshlink_channel *channel) __attribute__((__warn_unused_result__));
+size_t meshlink_channel_get_recvq(struct meshlink_handle *mesh, struct meshlink_channel *channel) __attribute__((__warn_unused_result__));
+
+/// Get the maximum segment size of a channel.
+/** This returns the amount of bytes that can be sent at once for channels with UDP semantics.
+ *
+ *  \memberof meshlink_channel
+ *  @param mesh         A handle which represents an instance of MeshLink.
+ *  @param channel      A handle for the channel.
+ *
+ *  @return             The amount of bytes in the receive buffer.
+ */
+size_t meshlink_channel_get_mss(struct meshlink_handle *mesh, struct meshlink_channel *channel) __attribute__((__warn_unused_result__));
 
 /// Set the connection timeout used for channels to the given node.
 /** This sets the timeout after which unresponsive channels will be reported as closed.
@@ -1470,11 +1753,11 @@ extern size_t meshlink_channel_get_recvq(struct meshlink_handle *mesh, struct me
  *
  *  \memberof meshlink_node
  *  @param mesh         A handle which represents an instance of MeshLink.
- *  @param channel      A handle for the channel.
+ *  @param node         A pointer to a struct meshlink_node describing the node to set the channel connection timeout for.
  *  @param timeout      The timeout in seconds after which unresponsive channels will be reported as closed.
  *                      The default is 60 seconds.
  */
-extern void meshlink_set_node_channel_timeout(struct meshlink_handle *mesh, struct meshlink_node *node, int timeout);
+void meshlink_set_node_channel_timeout(struct meshlink_handle *mesh, struct meshlink_node *node, int timeout);
 
 /// Hint that a hostname may be found at an address
 /** This function indicates to meshlink that the given hostname is likely found
@@ -1487,7 +1770,7 @@ extern void meshlink_set_node_channel_timeout(struct meshlink_handle *mesh, stru
  *                  given hostname. The caller is free to overwrite or free
  *                  this memory once meshlink returns.
  */
-extern void meshlink_hint_address(struct meshlink_handle *mesh, struct meshlink_node *node, const struct sockaddr *addr);
+void meshlink_hint_address(struct meshlink_handle *mesh, struct meshlink_node *node, const struct sockaddr *addr);
 
 /// Enable or disable zeroconf discovery of local peers
 /** This controls whether zeroconf discovery using the Catta library will be
@@ -1497,7 +1780,17 @@ extern void meshlink_hint_address(struct meshlink_handle *mesh, struct meshlink_
  *  @param mesh    A handle which represents an instance of MeshLink.
  *  @param enable  Set to true to enable discovery, false to disable.
  */
-extern void meshlink_enable_discovery(struct meshlink_handle *mesh, bool enable);
+void meshlink_enable_discovery(struct meshlink_handle *mesh, bool enable);
+
+/// Inform MeshLink that the local network configuration might have changed
+/** This is intended to be used when there is no way for MeshLink to get notifications of local network changes.
+ *  It forces MeshLink to scan all network interfaces for changes in up/down status and new/removed addresses,
+ *  and will immediately check if all connections to other nodes are still alive.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh    A handle which represents an instance of MeshLink.
+ */
+void meshlink_hint_network_change(struct meshlink_handle *mesh);
 
 /// Performs key rotation for an encrypted storage
 /** This rotates the (master) key for an encrypted storage and discards the old key
@@ -1510,7 +1803,7 @@ extern void meshlink_enable_discovery(struct meshlink_handle *mesh, bool enable)
  *
  *  @return         This function returns true if the key rotation for the encrypted storage succeeds, false otherwise.
  */
-extern bool meshlink_encrypted_key_rotate(struct meshlink_handle *mesh, const void *key, size_t keylen) __attribute__((__warn_unused_result__));
+bool meshlink_encrypted_key_rotate(struct meshlink_handle *mesh, const void *key, size_t keylen) __attribute__((__warn_unused_result__));
 
 /// Set device class timeouts
 /** This sets the ping interval and timeout for a given device class.
@@ -1522,7 +1815,84 @@ extern bool meshlink_encrypted_key_rotate(struct meshlink_handle *mesh, const vo
  *  @param pingtimeout   The required time within which a peer should respond, in seconds. The default is 5.
  *                       The timeout must be smaller than the interval.
  */
-extern void meshlink_set_dev_class_timeouts(struct meshlink_handle *mesh, dev_class_t devclass, int pinginterval, int pingtimeout);
+void meshlink_set_dev_class_timeouts(struct meshlink_handle *mesh, dev_class_t devclass, int pinginterval, int pingtimeout);
+
+/// Set device class fast retry period
+/** This sets the fast retry period for a given device class.
+ *  During this period after the last time the mesh becomes unreachable, connections are tried once a second.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh               A handle which represents an instance of MeshLink.
+ *  @param devclass           The device class to update
+ *  @param fast_retry_period  The period during which fast connection retries are done. The default is 0.
+ */
+void meshlink_set_dev_class_fast_retry_period(struct meshlink_handle *mesh, dev_class_t devclass, int fast_retry_period);
+
+/// Set device class maximum timeout
+/** This sets the maximum timeout for outgoing connection retries for a given device class.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh          A handle which represents an instance of MeshLink.
+ *  @param devclass      The device class to update
+ *  @param maxtimeout    The maximum timeout between reconnection attempts, in seconds. The default is 900.
+ */
+void meshlink_set_dev_class_maxtimeout(struct meshlink_handle *mesh, dev_class_t devclass, int maxtimeout);
+
+/// Reset all connection timers
+/** This resets all timers related to connections, causing pending outgoing connections to be retried immediately.
+ * It also sends keepalive packets on all active connections immediately.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh          A handle which represents an instance of MeshLink.
+ */
+void meshlink_reset_timers(struct meshlink_handle *mesh);
+
+/// Set which order invitations are committed
+/** This determines in which order configuration files are written to disk during an invitation.
+ *  By default, the invitee saves the configuration to disk first, then the inviter.
+ *  By calling this function with @a inviter_commits_first set to true, the order is reversed.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh               A handle which represents an instance of MeshLink.
+ *  @param inviter_commits_first  If true, then the node that invited a peer will commit data to disk first.
+ */
+void meshlink_set_inviter_commits_first(struct meshlink_handle *mesh, bool inviter_commits_first);
+
+/// Set the URL used to discover the host's external address
+/** For generating invitation URLs, MeshLink can look up the externally visible address of the local node.
+ *  It does so by querying an external service. By default, this is http://meshlink.io/host.cgi.
+ *  Only URLs starting with http:// are supported.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh  A handle which represents an instance of MeshLink.
+ *  @param url   The URL to use for external address queries, or NULL to revert back to the default URL.
+ */
+void meshlink_set_external_address_discovery_url(struct meshlink_handle *mesh, const char *url);
+
+/// Set the scheduling granularity of the application
+/** This should be set to the effective scheduling granularity for the application.
+ *  This depends on the scheduling granularity of the operating system, the application's
+ *  process priority and whether it is running as realtime or not.
+ *  The default value is 10000 (10 milliseconds).
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh         A handle which represents an instance of MeshLink.
+ *  @param granularity  The scheduling granularity of the application in microseconds.
+ */
+void meshlink_set_scheduling_granularity(struct meshlink_handle *mesh, long granularity);
+
+/// Sets the storage policy used by MeshLink
+/** This sets the policy MeshLink uses when it has new information about nodes.
+ *  By default, all udpates will be stored to disk (unless an ephemeral instance has been opened).
+ *  Setting the policy to MESHLINK_STORAGE_KEYS_ONLY, only updates that contain new keys for nodes
+ *  are stored, as well as blacklist/whitelist settings.
+ *  By setting the policy to MESHLINK_STORAGE_DISABLED, no updates will be stored.
+ *
+ *  \memberof meshlink_handle
+ *  @param mesh    A handle which represents an instance of MeshLink.
+ *  @param policy  The storage policy to use.
+ */
+void meshlink_set_storage_policy(struct meshlink_handle *mesh, meshlink_storage_policy_t policy);
 
 #ifdef __cplusplus
 }