1 files changed, 14 insertions, 9 deletions
diff --git a/LinuxBluetooth.cpp b/LinuxBluetooth.cpp
index 5a00f53..3efa7e5 100644
--- a/LinuxBluetooth.cpp
+++ b/LinuxBluetooth.cpp
@@ -1,3 +1,5 @@
+#include "Bluetooth.h"
+
 #include <string.h>
 #include <stropts.h>
 #include <sys/select.h>
@@ -10,8 +12,6 @@
 #include <sstream>
 #include <iomanip>
 
-#include "Bluetooth.h"
-
 // Got to love magic constants. Taken from bluez.git/tools/btgatt-client.c
 #define ATT_CID 4
 
@@ -33,7 +33,7 @@ public:
 
     ~LinuxBluetoothAdapter();
 
-    void runScan(void (*callback)(BluetoothDevice &device));
+    void runScan(void (*callback)(BluetoothDevice &device)) override;
 
     BluetoothDevice &getDevice(Mac &mac) override;
 
@@ -155,7 +155,7 @@ void LinuxBluetoothDevice::discoverServices() {
     DF;
 
     uint8_t buffer[MAX_MTU];
-    ByteBuffer out = ByteBuffer(buffer, MAX_MTU, 0);
+    ByteBuffer out = ByteBuffer(buffer, MAX_MTU);
 
     AttPdu::makeReadByGroupType(out, 0x0001, 0xffff, UUID_PRIMARY_SERVICE);
 
@@ -165,9 +165,14 @@ void LinuxBluetoothDevice::discoverServices() {
     D << "written=" << written;
 
     ssize_t r = read(l2cap, buffer, MAX_MTU);
-    ByteBuffer in = ByteBuffer(buffer, MAX_MTU, r);
 
-    D << "read: " << r << " bytes";
+    if (r == -1) {
+        throw BluetoothException(this, "read(): " + errnoAsString());
+    }
+
+    ByteBuffer in = ByteBuffer(buffer, r);
+
+    D << "read: " << r << " bytes: " << in.toString();
 
     vector<AttributeData> values = AttPdu::parseReadByGroupType(in);
 
@@ -192,7 +197,7 @@ LinuxBluetoothAdapter::LinuxBluetoothAdapter(int hciDeviceId) :
     D << "HCI socket: " << hciSocket;
 
     if (hciSocket == -1) {
-        throw BluetoothException(this, "Could not open HCI device " + hciDeviceId);
+        throw BluetoothException(this, "Could not open HCI device " + to_string(hciDeviceId));
     }
 
     hci_filter_clear(&hciFilter);
@@ -222,12 +227,12 @@ void LinuxBluetoothAdapter::startScan() {
     struct hci_dev_info di;
 
     if (hci_devinfo(hciDeviceId, &di) < 0) {
-        throw BluetoothException(this, "hci_devinfo: " + hciDeviceId);
+        throw BluetoothException(this, "HCI adapter is not up: " + to_string(hciDeviceId));
     }
 
     D << "hciDeviceId.dev_id=" << di.dev_id;
     D << "hciDeviceId.bdaddr=" << parseMac(di.bdaddr).str();
-    D << "hciDeviceId.flags=" << hex << setw(8) << setfill('0') << di.flags;
+    D << "hciDeviceId.flags=" << setw(8) << setfill('0') << hex << di.flags;
     D << "hciDeviceId.flags RUNNING = " << hci_test_bit(HCI_RUNNING, &di.flags);
     D << "hciDeviceId.flags UP      = " << hci_test_bit(HCI_UP, &di.flags);
     D << "hciDeviceId.flags PSCAN   = " << hci_test_bit(HCI_PSCAN, &di.flags);