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[Server] Add callback for MTU change. (#55)

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onMTUChange callback added that is called when a connection MTU is updated.
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h2zero 2021-07-19 21:47:59 -06:00 committed by GitHub
parent 7d01fa595d
commit 0a2714c169
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3 changed files with 21 additions and 0 deletions
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3
examples/Advanced/NimBLE_Server/main/main.cpp
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@ -41,6 +41,9 @@ class ServerCallbacks: public NimBLEServerCallbacks {
printf("Client disconnected - start advertising\n");
NimBLEDevice::startAdvertising();
};
void onMTUChange(uint16_t MTU, ble_gap_conn_desc* desc) {
printf("MTU updated: %u for connection ID: %u\n", MTU, desc->conn_handle);
};
/********************* Security handled here **********************
****** Note: these are the same return values as defaults ********/

10
src/NimBLEServer.cpp
View file

@ -416,6 +416,12 @@ NimBLEConnInfo NimBLEServer::getPeerIDInfo(uint16_t id) {
NIMBLE_LOGI(LOG_TAG, "mtu update event; conn_handle=%d mtu=%d",
event->mtu.conn_handle,
event->mtu.value);
rc = ble_gap_conn_find(event->mtu.conn_handle, &desc);
if (rc != 0) {
return 0;
}
server->m_pServerCallbacks->onMTUChange(event->mtu.value, &desc);
return 0;
} // BLE_GAP_EVENT_MTU
@ -809,6 +815,10 @@ void NimBLEServerCallbacks::onDisconnect(NimBLEServer* pServer, ble_gap_conn_des
NIMBLE_LOGD("NimBLEServerCallbacks", "onDisconnect(): Default");
} // onDisconnect
void NimBLEServerCallbacks::onMTUChange(uint16_t MTU, ble_gap_conn_desc* desc) {
NIMBLE_LOGD("NimBLEServerCallbacks", "onMTUChange(): Default");
} // onMTUChange
uint32_t NimBLEServerCallbacks::onPassKeyRequest(){
NIMBLE_LOGD("NimBLEServerCallbacks", "onPassKeyRequest: default: 123456");
return 123456;

8
src/NimBLEServer.h
View file

@ -131,6 +131,14 @@ public:
*/
virtual void onDisconnect(NimBLEServer* pServer, ble_gap_conn_desc* desc);
/**
* @brief Called when the connection MTU changes.
* @param [in] MTU The new MTU value.
* @param [in] desc A pointer to the connection description structure containig information
* about the connection.
*/
virtual void onMTUChange(uint16_t MTU, ble_gap_conn_desc* desc);
/**
* @brief Called when a client requests a passkey for pairing.
* @return The passkey to be sent to the client.