Hi I'm trying to write a value to a BLE thermal printer using the Web Bluetooth API on ChromeOS (using Bluez 5.33). I can connect to the device and find the service and characteristic. But when I try and write to the characteristic an error is thrown (although it looks like it disconnects before the write happens). Please find attached log. Thanks Leon sudo btmon -w ~/Downloads/btmon.btsnoop Bluetooth monitor ver 5.33 = New Index: 1C:3E:84:0D:F9:F8 (BR/EDR,USB,hci0) [hci0] 0.004075 < HCI Command: LE Add Device To White List (0x08|0x0011) plen 7 [hci0] 15.209842 Address type: Random (0x01) Address: 0F:04:E0:51:44:8B (Non-Resolvable) > HCI Event: Command Complete (0x0e) plen 4 [hci0] 15.210823 LE Add Device To White List (0x08|0x0011) ncmd 1 Status: Success (0x00) < HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7 [hci0] 15.210856 Type: Passive (0x00) Interval: 60.000 msec (0x0060) Window: 30.000 msec (0x0030) Own address type: Public (0x00) Filter policy: Ignore not in white list (0x01) > HCI Event: Command Complete (0x0e) plen 4 [hci0] 15.211822 LE Set Scan Parameters (0x08|0x000b) ncmd 1 Status: Success (0x00) < HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2 [hci0] 15.211854 Scanning: Enabled (0x01) Filter duplicates: Enabled (0x01) > HCI Event: Command Complete (0x0e) plen 4 [hci0] 15.212823 LE Set Scan Enable (0x08|0x000c) ncmd 1 Status: Success (0x00) > HCI Event: LE Meta Event (0x3e) plen 43 [hci0] 15.528855 LE Advertising Report (0x02) Num reports: 1 Event type: Connectable undirected - ADV_IND (0x00) Address type: Random (0x01) Address: 0F:04:E0:51:44:8B (Non-Resolvable) Data length: 31 Flags: 0x06 LE General Discoverable Mode BR/EDR Not Supported 16-bit Service UUIDs (partial): 1 entry Unknown (0x18f0) 128-bit Service UUIDs (partial): 1 entry e7810a71-73ae-499d-8c15-faa9aef0c3f2 TX power: 4 dBm RSSI: -46 dBm (0xd2) < HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2 [hci0] 15.528930 Scanning: Disabled (0x00) Filter duplicates: Disabled (0x00) > HCI Event: Command Complete (0x0e) plen 4 [hci0] 15.529824 LE Set Scan Enable (0x08|0x000c) ncmd 1 Status: Success (0x00) < HCI Command: LE Create Connection (0x08|0x000d) plen 25 [hci0] 15.529878 Scan interval: 60.000 msec (0x0060) Scan window: 30.000 msec (0x0030) Filter policy: White list is not used (0x00) Peer address type: Random (0x01) Peer address: 0F:04:E0:51:44:8B (Non-Resolvable) Own address type: Public (0x00) Min connection interval: 50.00 msec (0x0028) Max connection interval: 70.00 msec (0x0038) Connection latency: 0x0000 Supervision timeout: 420 msec (0x002a) Min connection length: 0.000 msec (0x0000) Max connection length: 0.000 msec (0x0000) > HCI Event: Command Status (0x0f) plen 4 [hci0] 15.530826 LE Create Connection (0x08|0x000d) ncmd 1 Status: Success (0x00) > HCI Event: LE Meta Event (0x3e) plen 19 [hci0] 15.848909 LE Connection Complete (0x01) Status: Success (0x00) Handle: 32 Role: Master (0x00) Peer address type: Random (0x01) Peer address: 0F:04:E0:51:44:8B (Non-Resolvable) Connection interval: 67.50 msec (0x0036) Connection latency: 0.00 msec (0x0000) Supervision timeout: 420 msec (0x002a) Master clock accuracy: 0x00 < HCI Command: LE Read Remote Used Features (0x08|0x0016) plen 2 [hci0] 15.849297 Handle: 32 @ Device Connected: 0F:04:E0:51:44:8B (2) flags 0x0000 02 01 06 03 02 f0 18 11 06 f2 c3 f0 ae a9 fa 15 ................ 8c 9d 49 ae 73 71 0a 81 e7 02 0a 04 00 00 00 ..I.sq......... > HCI Event: Command Status (0x0f) plen 4 [hci0] 15.849836 LE Read Remote Used Features (0x08|0x0016) ncmd 1 Status: Success (0x00) > ACL Data RX: Handle 32 flags 0x02 dlen 16 [hci0] 15.883695 LE L2CAP: Connection Parameter Update Request (0x12) ident 180 len 8 Min interval: 8 Max interval: 16 Slave latency: 0 Timeout multiplier: 300 > HCI Event: LE Meta Event (0x3e) plen 12 [hci0] 16.018827 LE Read Remote Used Features (0x04) Status: Success (0x00) Handle: 32 Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 LE Encryption < ACL Data TX: Handle 32 flags 0x00 dlen 10 [hci0] 16.018919 LE L2CAP: Connection Parameter Update Response (0x13) ident 180 len 2 Result: Connection Parameters accepted (0x0000) < HCI Command: LE Connection Update (0x08|0x0013) plen 14 [hci0] 16.018938 Handle: 32 Min connection interval: 10.00 msec (0x0008) Max connection interval: 20.00 msec (0x0010) Connection latency: 0x0000 Supervision timeout: 3000 msec (0x012c) Min connection length: 0.000 msec (0x0000) Max connection length: 0.000 msec (0x0000) < ACL Data TX: Handle 32 flags 0x00 dlen 7 [hci0] 16.019328 ATT: Exchange MTU Request (0x02) len 2 Client RX MTU: 517 > HCI Event: Command Status (0x0f) plen 4 [hci0] 16.019819 LE Connection Update (0x08|0x0013) ncmd 1 Status: Success (0x00) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.086875 Num handles: 1 Handle: 32 Count: 1 > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.087870 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 7 [hci0] 16.153733 ATT: Exchange MTU Response (0x03) len 2 Server RX MTU: 158 < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.153997 ATT: Read By Group Type Request (0x10) len 6 Handle range: 0x0001-0xffff Attribute group type: Primary Service (0x2800) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.221859 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 24 [hci0] 16.288359 ATT: Read By Group Type Response (0x11) len 19 Attribute data length: 6 Attribute group list: 3 entries Handle range: 0x0001-0x0005 UUID: Generic Access Profile (0x1800) Handle range: 0x0006-0x0006 UUID: Generic Attribute Profile (0x1801) Handle range: 0x0007-0x000b UUID: Battery Service (0x180f) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.288589 ATT: Read By Group Type Request (0x10) len 6 Handle range: 0x000c-0xffff Attribute group type: Primary Service (0x2800) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.356857 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 24 [hci0] 16.423416 ATT: Read By Group Type Response (0x11) len 19 Attribute data length: 6 Attribute group list: 3 entries Handle range: 0x000c-0x000e UUID: Link Loss (0x1803) Handle range: 0x000f-0x0011 UUID: Immediate Alert (0x1802) Handle range: 0x0012-0x001f UUID: Alert Notification Service (0x1811) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.423732 ATT: Read By Group Type Request (0x10) len 6 Handle range: 0x0020-0xffff Attribute group type: Primary Service (0x2800) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.491921 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 24 [hci0] 16.558416 ATT: Read By Group Type Response (0x11) len 19 Attribute data length: 6 Attribute group list: 3 entries Handle range: 0x0020-0x0022 UUID: Tx Power (0x1804) Handle range: 0x0023-0x0029 UUID: Unknown (0x18f0) Handle range: 0x002a-0x002e UUID: Device Information (0x180a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.558740 ATT: Read By Group Type Request (0x10) len 6 Handle range: 0x002f-0xffff Attribute group type: Primary Service (0x2800) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.626913 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 26 [hci0] 16.693364 ATT: Read By Group Type Response (0x11) len 21 Attribute data length: 20 Attribute group list: 1 entry Handle range: 0x002f-0x0032 UUID: Unknown (e7810a71-73ae-499d-8c15-faa9aef0c3f2) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.693674 ATT: Read By Group Type Request (0x10) len 6 Handle range: 0x0033-0xffff Attribute group type: Primary Service (0x2800) > HCI Event: LE Meta Event (0x3e) plen 10 [hci0] 16.693845 LE Connection Update Complete (0x03) Status: Success (0x00) Handle: 32 Connection interval: 15.00 msec (0x000c) Connection latency: 0.00 msec (0x0000) Supervision timeout: 3000 msec (0x012c) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.708831 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 16.723276 ATT: Error Response (0x01) len 4 Read By Group Type Request (0x10) Handle: 0x0033 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.723678 ATT: Read By Group Type Request (0x10) len 6 Handle range: 0x0001-0xffff Attribute group type: Secondary Service (0x2801) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.738822 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 16.753289 ATT: Error Response (0x01) len 4 Read By Group Type Request (0x10) Handle: 0x0001 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.753627 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0001-0x0005 Attribute type: Include (0x2802) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.768858 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 16.783290 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x0001 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.783618 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0007-0x000b Attribute type: Include (0x2802) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.798828 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 16.813283 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x0007 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.813608 ATT: Read By Type Request (0x08) len 6 Handle range: 0x000c-0x000e Attribute type: Include (0x2802) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.828840 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 16.843277 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x000c Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.843625 ATT: Read By Type Request (0x08) len 6 Handle range: 0x000f-0x0011 Attribute type: Include (0x2802) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.858824 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 16.873234 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x000f Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.873476 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0012-0x001f Attribute type: Include (0x2802) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.888906 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 16.903234 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x0012 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.903486 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0020-0x0022 Attribute type: Include (0x2802) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.918864 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 16.933215 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x0020 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.933401 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0023-0x0029 Attribute type: Include (0x2802) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.948918 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 16.963217 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x0023 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.963549 ATT: Read By Type Request (0x08) len 6 Handle range: 0x002a-0x002e Attribute type: Include (0x2802) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 16.978834 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 16.993230 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x002a Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 16.993526 ATT: Read By Type Request (0x08) len 6 Handle range: 0x002f-0x0032 Attribute type: Include (0x2802) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.008917 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 17.023196 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x002f Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.023593 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0001-0x0005 Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.038918 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.053196 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x0002 Value: 020300002a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.053464 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0003-0x0005 Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.068910 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.083270 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x0004 Value: 020500012a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.083583 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0005-0x0005 Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.098917 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 17.113205 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x0005 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.113705 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0007-0x000b Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.128816 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.143220 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x0008 Value: 120900192a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.143457 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0009-0x000b Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.158818 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 17.173249 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x0009 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 9 [hci0] 17.173568 ATT: Find Information Request (0x04) len 4 Handle range: 0x000a-0x000b > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.188871 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 14 [hci0] 17.203411 ATT: Find Information Response (0x05) len 9 Format: UUID-16 (0x01) Handle: 0x000a UUID: Characteristic Format (0x2904) Handle: 0x000b UUID: Client Characteristic Configuration (0x2902) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.203778 ATT: Read By Type Request (0x08) len 6 Handle range: 0x000c-0x000e Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.218824 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.233259 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x000d Value: 0a0e00062a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.233596 ATT: Read By Type Request (0x08) len 6 Handle range: 0x000e-0x000e Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.248851 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 17.263285 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x000e Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.263643 ATT: Read By Type Request (0x08) len 6 Handle range: 0x000f-0x0011 Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.293823 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.308362 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x0010 Value: 041100062a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.308668 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0011-0x0011 Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.323911 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 17.338293 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x0011 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.338649 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0012-0x001f Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.353829 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.368411 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x0013 Value: 021400472a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.369010 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0014-0x001f Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.398916 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.413355 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x0015 Value: 101600462a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.413754 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0016-0x001f Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.428879 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.443345 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x0018 Value: 021900482a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.443574 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0019-0x001f Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.458856 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.473356 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x001a Value: 101b00452a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.473660 ATT: Read By Type Request (0x08) len 6 Handle range: 0x001b-0x001f Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.488815 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.503338 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x001d Value: 181e00442a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.503642 ATT: Read By Type Request (0x08) len 6 Handle range: 0x001e-0x001f Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.518869 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 17.533201 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x001e Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 9 [hci0] 17.533732 ATT: Find Information Request (0x04) len 4 Handle range: 0x0017-0x0017 > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.548839 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 10 [hci0] 17.563221 ATT: Find Information Response (0x05) len 5 Format: UUID-16 (0x01) Handle: 0x0017 UUID: Client Characteristic Configuration (0x2902) < ACL Data TX: Handle 32 flags 0x00 dlen 9 [hci0] 17.563496 ATT: Find Information Request (0x04) len 4 Handle range: 0x001c-0x001c > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.578816 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 10 [hci0] 17.593246 ATT: Find Information Response (0x05) len 5 Format: UUID-16 (0x01) Handle: 0x001c UUID: Client Characteristic Configuration (0x2902) < ACL Data TX: Handle 32 flags 0x00 dlen 9 [hci0] 17.593596 ATT: Find Information Request (0x04) len 4 Handle range: 0x001f-0x001f > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.608818 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 10 [hci0] 17.623286 ATT: Find Information Response (0x05) len 5 Format: UUID-16 (0x01) Handle: 0x001f UUID: Client Characteristic Configuration (0x2902) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.623640 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0020-0x0022 Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.638840 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.653410 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x0021 Value: 022200072a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.653721 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0022-0x0022 Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.668867 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 17.683241 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x0022 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.683511 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0023-0x0029 Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.698817 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.713365 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x0024 Value: 0c2500f12a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.713569 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0025-0x0029 Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.728917 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.743317 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x0027 Value: 302800f02a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.743573 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0028-0x0029 Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.758913 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 17.773195 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x0028 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 9 [hci0] 17.773531 ATT: Find Information Request (0x04) len 4 Handle range: 0x0026-0x0026 > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.788913 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 10 [hci0] 17.803317 ATT: Find Information Response (0x05) len 5 Format: UUID-16 (0x01) Handle: 0x0026 UUID: Client Characteristic Configuration (0x2902) < ACL Data TX: Handle 32 flags 0x00 dlen 9 [hci0] 17.803739 ATT: Find Information Request (0x04) len 4 Handle range: 0x0029-0x0029 > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.818913 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 10 [hci0] 17.833321 ATT: Find Information Response (0x05) len 5 Format: UUID-16 (0x01) Handle: 0x0029 UUID: Client Characteristic Configuration (0x2902) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.833757 ATT: Read By Type Request (0x08) len 6 Handle range: 0x002a-0x002e Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.848912 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.863352 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x002b Value: 022c00232a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.863629 ATT: Read By Type Request (0x08) len 6 Handle range: 0x002c-0x002e Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.878828 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 17.908312 ATT: Read By Type Response (0x09) len 8 Attribute data length: 7 Attribute data list: 1 entry Handle: 0x002d Value: 022e00292a < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.908583 ATT: Read By Type Request (0x08) len 6 Handle range: 0x002e-0x002e Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.923919 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 17.938187 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x002e Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.938450 ATT: Read By Type Request (0x08) len 6 Handle range: 0x002f-0x0032 Attribute type: Characteristic (0x2803) > ACL Data RX: Handle 32 flags 0x02 dlen 27 [hci0] 17.968564 ATT: Read By Type Response (0x09) len 22 Attribute data length: 21 Attribute data list: 1 entry Handle: 0x0030 Value: 3a31009f9f00c158bd32b69e4c219cc9d6f8be > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.968805 Num handles: 1 Handle: 32 Count: 1 < ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 17.968838 ATT: Read By Type Request (0x08) len 6 Handle range: 0x0031-0x0032 Attribute type: Characteristic (0x2803) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 17.983876 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 17.998313 ATT: Error Response (0x01) len 4 Read By Type Request (0x08) Handle: 0x0031 Error: Attribute Not Found (0x0a) < ACL Data TX: Handle 32 flags 0x00 dlen 9 [hci0] 17.998699 ATT: Find Information Request (0x04) len 4 Handle range: 0x0032-0x0032 > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 18.013849 Num handles: 1 Handle: 32 Count: 1 > ACL Data RX: Handle 32 flags 0x02 dlen 10 [hci0] 18.028315 ATT: Find Information Response (0x05) len 5 Format: UUID-16 (0x01) Handle: 0x0032 UUID: Client Characteristic Configuration (0x2902) < ACL Data TX: Handle 32 flags 0x00 dlen 9 [hci0] 18.030692 ATT: Read Blob Request (0x0c) len 4 Handle: 0x0003 Offset: 0x0000 > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 18.043803 Num handles: 1 Handle: 32 Count: 1 < HCI Command: Disconnect (0x01|0x0006) plen 3 [hci0] 50.049295 Handle: 32 Reason: Remote User Terminated Connection (0x13) > HCI Event: Command Status (0x0f) plen 4 [hci0] 50.050594 Disconnect (0x01|0x0006) ncmd 1 Status: Success (0x00) > HCI Event: Vendor (0xff) plen 7 [hci0] 50.055689 82 70 90 80 10 36 59 .p...6Y > HCI Event: Disconnect Complete (0x05) plen 4 [hci0] 50.056491 Status: Success (0x00) Handle: 32 Reason: Connection Terminated By Local Host (0x16) @ Device Disconnected: 0F:04:E0:51:44:8B (2) reason 2l
Attachment:
btmon (2).btsnoop
Description: Binary data