/*
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
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
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
* 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().
* @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.
*
* @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.
*
* @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_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.
+ */
+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.
* @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.
* @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.
* @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.
* @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
*
* @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,
* \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,
* \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
*
* @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.
* @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.
* @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.
* @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.
* @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.
* @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 {
* @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 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.
* @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().
* @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.
* @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.
* 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.
* 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.
* @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.
* 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.
*
* @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.
* 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.
* 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.
* 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.
*
* @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.
*
* @return This function returns true if the node is currently reachable, false otherwise.
*/
-extern bool meshlink_get_node_reachability(struct meshlink_handle *mesh, struct meshlink_node *node, time_t *last_reachable, time_t *last_unreachable);
+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.
*
* @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.
*
* 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.
*
* @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.
* @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 listening port's number will be used.
+ * 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.
*/
-extern bool meshlink_add_invitation_address(struct meshlink_handle *mesh, const char *address, const char *port) __attribute__((__warn_unused_result__));
+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.
*/
-extern void meshlink_clear_invitation_addresses(struct meshlink_handle *mesh);
+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.
*
* @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__, __deprecated__("use meshlink_set_canonical_address() and/or meshlink_add_invitation_address() instead")));
+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
* 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
* 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.
* 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:
*
* @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.
*
* @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.
* 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.
* 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.
* @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.
* @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.
* @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.
* 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.
*
* @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.
* @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.
*
* @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,
*
* @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.
*
* @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.
*
* @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.
*
* @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.
*
* \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.
* @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.)
*/
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.
* @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.
* @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.
* @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.
* @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.
* @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.
* @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.
* @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.
* @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.
* 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.
*
* @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.
*
* @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.
*
* @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.
*
* @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.
*
* @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.
*
* @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.
*
* @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.
*
* @return The amount of bytes in the receive buffer.
*/
-extern size_t meshlink_channel_get_mss(struct meshlink_handle *mesh, struct meshlink_channel *channel) __attribute__((__warn_unused_result__));
+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.
*
* \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
* 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
* @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
*
* @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.
* @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.
* @param devclass The device class to update
* @param fast_retry_period The period during which fast connection retries are done. The default is 0.
*/
-extern void meshlink_set_dev_class_fast_retry_period(struct meshlink_handle *mesh, dev_class_t devclass, int fast_retry_period);
+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.
* @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.
*/
-extern void meshlink_set_inviter_commits_first(struct meshlink_handle *mesh, bool inviter_commits_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.
* @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.
*/
-extern void meshlink_set_external_address_discovery_url(struct meshlink_handle *mesh, const char *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.
* @param mesh A handle which represents an instance of MeshLink.
* @param granularity The scheduling granularity of the application in microseconds.
*/
-extern void meshlink_set_scheduling_granularity(struct meshlink_handle *mesh, long granularity);
+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
}
projects / meshlink / blobdiff