extern "C" {
#endif
+/// The length in bytes of a signature made with meshlink_sign()
#define MESHLINK_SIGLEN 64
/// A handle for an instance of MeshLink.
* @return This function should return true if the application accepts the incoming channel, false otherwise.
* If returning false, the channel is invalid and may not be used anymore.
*/
-typedef bool (*meshlink_channel_accept_cb_t)(meshlink_handle_t *mesh, meshlink_channel_t *channel, meshlink_node_t *node, uint16_t port, void *data, size_t len);
+typedef bool (*meshlink_channel_accept_cb_t)(meshlink_handle_t *mesh, meshlink_channel_t *channel, meshlink_node_t *node, uint16_t port, const void *data, size_t len);
/// A callback for receiving data from a channel.
/** This function is called whenever a remote node wants to open a channel to the local node.
* @param data A pointer to a buffer containing data sent by the source.
* @param len The length of the data.
*/
-typedef void (*meshlink_channel_receive_cb_t)(meshlink_handle_t *mesh, meshlink_channel_t *channel, void *data, size_t len);
+typedef void (*meshlink_channel_receive_cb_t)(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len);
/// Set the accept callback.
/** This functions sets the callback that is called whenever another node sends data to the local node.
* @param channel A handle for the channel.
* @param cb A pointer to the function which will be called when another node sends data to the local node.
*/
-extern void meshlink_set_channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, meshlink_receive_cb_t cb);
+extern void meshlink_set_channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, meshlink_channel_receive_cb_t cb);
/// 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.
*/
-extern meshlink_channel_t *meshlink_channel_open(meshlink_handle_t *mesh, meshlink_node_t *node, uint16_t port, meshlink_channel_receive_cb_t cb, void *data, size_t len);
+extern meshlink_channel_t *meshlink_channel_open(meshlink_handle_t *mesh, meshlink_node_t *node, uint16_t port, meshlink_channel_receive_cb_t cb, const void *data, size_t len);
/// Partially close a reliable stream channel.
/** This shuts down the read or write side of a channel, or both, without closing the handle.
*
* @return The amount of data that was queued, which can be less than len, or a negative value in case of an error.
*/
-extern ssize_t meshlink_channel_send(meshlink_handle_t *mesh, meshlink_channel_t *channel, void *data, size_t len);
+extern ssize_t meshlink_channel_send(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len);
#ifdef __cplusplus
}