| commit | bf008c60ed72ffd2ec124b6e87e5d3562d8bed86 | [log] [tgz] |
|---|---|---|
| author | HsingYuan Lo <hylo@google.com> | Mon Jan 11 18:14:48 2021 +0800 |
| committer | Jakub Pawlowski <jpawlowski@google.com> | Mon Jan 11 21:18:39 2021 +0000 |
| tree | 86d5959152f91ef633753480f7d1dff9fdb4e668 | |
| parent | aad611cbb6296a58f8c140e3f003f72feafa7745 [diff] |
Implement robust caching (client)
Flag:
- Use flag to enable/disable robust caching on client side
When receiving service changed indication
- set read_db_hash flag to true
Read db hash function and response handler
- add bta_gattc_read_db_hash
- add bta_gattc_read_db_hash_cmpl
- reset read_db_hash flag
- If hash match, set states of all related clcb back to CONN_ST
- If hash not match, start service discovery
When start service discovery is called
- read db hash first if read_db_hash flag is on
- start service discovery immediately if above request is rejected
- start service discovery immediately if read_db_hash flag is off
When receiving response during discover state
- call bta_gattc_read_db_hash_cmpl,
if BTA_GATTC_DISCOVER_REQ_READ_DB_HASH is set
- call bta_gattc_read_ext_prop_desc_cmpl,
if BTA_GATTC_DISCOVER_REQ_READ_EXT_PROP_DESC is set
When DATABASE OUT OF SYNC is received during connected state
- send the error(0x12) to application layer
- start service discovery immediately
When DATABASE OUT OF SYNC is received during discover state
- if the retry count exceeds the limit, do nothing
- otherwise restart service discovery again, and increase the retry count
When service discovery is completed (bta_gattc_explore_srvc_finished)
- if result is GATT_SUCCESS, reset the count to zero
Bug: 154056389
Test: compile & verify gatt client behavior
Tag: #feature
Change-Id: I8e3e03302c03f49bda40f0ec20ad5c607ef6dcdf
Just build AOSP - Fluoride is there by default.
Instructions for Ubuntu, tested on 14.04 with Clang 3.5.0 and 16.10 with Clang 3.8.0
mkdir ~/fluoride cd ~/fluoride git clone https://android.googlesource.com/platform/packages/modules/Bluetooth/system
Install dependencies (require sudo access):
cd ~/fluoride/bt build/install_deps.sh
Then fetch third party dependencies:
cd ~/fluoride/bt mkdir third_party cd third_party git clone https://github.com/google/googletest.git git clone https://android.googlesource.com/platform/external/aac git clone https://android.googlesource.com/platform/external/libchrome git clone https://android.googlesource.com/platform/external/libldac git clone https://android.googlesource.com/platform/external/modp_b64 git clone https://android.googlesource.com/platform/external/tinyxml2
And third party dependencies of third party dependencies:
cd fluoride/bt/third_party/libchrome/base/third_party mkdir valgrind cd valgrind curl https://chromium.googlesource.com/chromium/src/base/+/master/third_party/valgrind/valgrind.h?format=TEXT | base64 -d > valgrind.h curl https://chromium.googlesource.com/chromium/src/base/+/master/third_party/valgrind/memcheck.h?format=TEXT | base64 -d > memcheck.h
NOTE: If packages/modules/Bluetooth/system is checked out under AOSP, then create symbolic links instead of downloading sources
cd packages/modules/Bluetooth/system mkdir third_party cd third_party ln -s ../../../external/aac aac ln -s ../../../external/libchrome libchrome ln -s ../../../external/libldac libldac ln -s ../../../external/modp_b64 modp_b64 ln -s ../../../external/tinyxml2 tinyxml2 ln -s ../../../external/googletest googletest
cd ~/fluoride/bt gn gen out/Default
cd ~/fluoride/bt ninja -C out/Default all
This will build all targets (the shared library, executables, tests, etc) and put them in out/Default. To build an individual target, replace "all" with the target of your choice, e.g. ninja -C out/Default net_test_osi.
cd ~/fluoride/bt/out/Default LD_LIBRARY_PATH=./ ./bluetoothtbd -create-ipc-socket=fluoride
Follows the Chromium project Eclipse Setup Instructions until "Optional: Building inside Eclipse" section (don't do that section, we will set it up differently)
Generate Eclipse settings:
cd packages/modules/Bluetooth/system gn gen --ide=eclipse out/Default
In Eclipse, do File->Import->C/C++->C/C++ Project Settings, choose the XML location under packages/modules/Bluetooth/system/out/Default
Right click on the project. Go to Preferences->C/C++ Build->Builder Settings. Uncheck "Use default build command", but instead using "ninja -C out/Default"
Goto Behaviour tab, change clean command to "-t clean"