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Add conn_handle to NimBLECharacteristic::notify to send notification/indication to a specific client (#97)

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Adds the ability to send notifications/indications to specific clients individually.
This commit is contained in:
gluhovsky 2022-09-12 05:18:55 +03:00 committed by GitHub
parent 6fb26e3809
commit e868f37135
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 16 additions and 8 deletions
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18
src/NimBLECharacteristic.cpp
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@ -411,9 +411,10 @@ void NimBLECharacteristic::indicate(const std::vector<uint8_t>& value) {
/**
* @brief Send a notification or indication.
* @param[in] is_notification if true sends a notification, false sends an indication.
* @param[in] conn_handle Connection handle to send individual notification, or BLE_HCI_LE_CONN_HANDLE_MAX + 1 to send notification to all subscribed clients.
*/
void NimBLECharacteristic::notify(bool is_notification) {
notify(m_value.data(), m_value.length(), is_notification);
void NimBLECharacteristic::notify(bool is_notification, uint16_t conn_handle) {
notify(m_value.data(), m_value.length(), is_notification, conn_handle);
} // notify
@ -421,9 +422,10 @@ void NimBLECharacteristic::notify(bool is_notification) {
* @brief Send a notification or indication.
* @param[in] value A std::vector<uint8_t> containing the value to send as the notification value.
* @param[in] is_notification if true sends a notification, false sends an indication.
* @param[in] conn_handle Connection handle to send individual notification, or BLE_HCI_LE_CONN_HANDLE_MAX + 1 to send notification to all subscribed clients.
*/
void NimBLECharacteristic::notify(const std::vector<uint8_t>& value, bool is_notification) {
notify(value.data(), value.size(), is_notification);
void NimBLECharacteristic::notify(const std::vector<uint8_t>& value, bool is_notification, uint16_t conn_handle) {
notify(value.data(), value.size(), is_notification, conn_handle);
} // notify
@ -432,8 +434,9 @@ void NimBLECharacteristic::notify(const std::vector<uint8_t>& value, bool is_not
* @param[in] value A pointer to the data to send.
* @param[in] length The length of the data to send.
* @param[in] is_notification if true sends a notification, false sends an indication.
* @param[in] conn_handle Connection handle to send individual notification, or BLE_HCI_LE_CONN_HANDLE_MAX + 1 to send notification to all subscribed clients.
*/
void NimBLECharacteristic::notify(const uint8_t* value, size_t length, bool is_notification) {
void NimBLECharacteristic::notify(const uint8_t* value, size_t length, bool is_notification, uint16_t conn_handle) {
NIMBLE_LOGD(LOG_TAG, ">> notify: length: %d", length);
if(!(m_properties & NIMBLE_PROPERTY::NOTIFY) &&
@ -457,6 +460,11 @@ void NimBLECharacteristic::notify(const uint8_t* value, size_t length, bool is_n
int rc = 0;
for (auto &it : m_subscribedVec) {
// check if need a specific client
if ((conn_handle <= BLE_HCI_LE_CONN_HANDLE_MAX) && (it.first != conn_handle)) {
continue;
}
uint16_t _mtu = getService()->getServer()->getPeerMTU(it.first) - 3;
// check if connected and subscribed

6
src/NimBLECharacteristic.h
View file

@ -84,9 +84,9 @@ public:
void indicate();
void indicate(const uint8_t* value, size_t length);
void indicate(const std::vector<uint8_t>& value);
void notify(bool is_notification = true);
void notify(const uint8_t* value, size_t length, bool is_notification = true);
void notify(const std::vector<uint8_t>& value, bool is_notification = true);
void notify(bool is_notification = true, uint16_t conn_handle = BLE_HCI_LE_CONN_HANDLE_MAX + 1);
void notify(const uint8_t* value, size_t length, bool is_notification = true, uint16_t conn_handle = BLE_HCI_LE_CONN_HANDLE_MAX + 1);
void notify(const std::vector<uint8_t>& value, bool is_notification = true, uint16_t conn_handle = BLE_HCI_LE_CONN_HANDLE_MAX + 1);
size_t getSubscribedCount();
void addDescriptor(NimBLEDescriptor *pDescriptor);
NimBLEDescriptor* getDescriptorByUUID(const char* uuid);