Comments (20)
pierredelisle
commented on June 2, 2024
2
@zimmyxyz Please see #172 and give it a try.
from sample-apps-for-matter-android.
zimmyxyz
commented on June 2, 2024
1
This is using the "Google Home Application" (GHA), right?
@pierredelisle Home Assistant is using the same com.google.android.gms.home.matter.* Google Home SDK APIs for commissioning Matter (and Matter over Thread) devices just like this sample project is.
Have you tried with the sample app in this GitHub project?
I'm assuming this sample app only supports using a Google Nest? I ran through the sample app's Matter commissioning flow for the same Thread device that failed to commission in Home Assistant Companion (even though the sample app doesn't have a Matter controller or Thread border router to use). It failed to commission the device with the same exact error as Home Assistant, attempting to make an authenticated API request to Google's servers. I still don't understand why GMS/Google Home Mobile SDK is requiring you to have a Google account and Internet. This makes it impossible to use Matter on an offline network:
E Vibration finished, cleaning up
E E0000 00:00:1694735269.059198 23960 chip_logging.cc:15] CHIP: SPT: JavaVM is already set
E E0000 00:00:1694735269.061944 23960 configuration_manager_impl.cc:232] Not implemented reached in virtual CHIP_ERROR chip::DeviceLayer::ConfigurationManagerImpl::GetFirmwareBuildChipEpochTime(System::Clock::Seconds32 &)
E E0000 00:00:1694735269.061959 23960 chip_logging.cc:15] CHIP: TS: Failed to init Last Known Good Time: third_party/connectedhomeip/current/src/platform/google/configuration_manager_impl.cc:233: CHIP Error 0x000000A0: Value not found in the persisted storage
E E0000 00:00:1694735269.065928 23960 chip_logging.cc:15] CHIP: FP: Failed to update pending Last Known Good Time: third_party/connectedhomeip/current/src/credentials/LastKnownGoodTime.cpp:173: CHIP Error 0x00000003: Incorrect state
E E0000 00:00:1694735269.065957 23960 chip_logging.cc:15] CHIP: TS: Failed to commit Last Known Good Time: third_party/connectedhomeip/current/src/credentials/LastKnownGoodTime.cpp:192: CHIP Error 0x00000003: Incorrect state
E E0000 00:00:1694735269.065964 23960 chip_logging.cc:15] CHIP: FP: Failed to commit Last Known Good Time: third_party/connectedhomeip/current/src/credentials/LastKnownGoodTime.cpp:192: CHIP Error 0x00000003: Incorrect state
E E0000 00:00:1694735269.066863 24001 connectivity_manager_impl.cc:47] Not implemented reached in void chip::DeviceLayer::ConnectivityManagerImpl::_OnPlatformEvent(const chip::DeviceLayer::ChipDeviceEvent *)
E [ERROR:l2c_ble.cc(326)] linkstate 0
E BTM_SetBleDataLength failed, peer does not support request
E bta_dm_acl_change new acl connetion:count = 1
E [ERROR:bta_gattc_cache.cc(723)] bta_gattc_cache_load: can't open GATT cache file /data/misc/bluetooth/gatt_cache_XXX for reading, error: No such file or directory
E Category is disabled or Not satisfied with Action value
E triggerId is null
E btif_gattc_upstreams_evt: Unhandled event (8)!
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E Failed to load device info. [CONTEXT service_id=336 ]
m.fwx: RPC GetDeviceSetupData returned code UNAUTHENTICATED; Sherlog for GetDeviceSetupData is needed to diagnose.
at m.fyb.b(:com.google.android.gms.optional_home@[email protected] (100400-0):314)
at m.qiw.bJ(:com.google.android.gms.optional_home@[email protected] (100400-0):14)
at m.qqy.run(:com.google.android.gms.optional_home@[email protected] (100400-0):114)
at m.dud.c(:com.google.android.gms.optional_home@[email protected] (100400-0):50)
at m.dud.run(:com.google.android.gms.optional_home@[email protected] (100400-0):76)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at aifk.run(:com.google.android.gms@[email protected] (100400-560151436):8)
at java.lang.Thread.run(Thread.java:919)
Caused by: m.plu: UNAUTHENTICATED: Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.
at m.dsn.m(:com.google.android.gms.optional_home@[email protected] (100400-0):17)
at m.dsn.l(:com.google.android.gms.optional_home@[email protected] (100400-0):170)
at m.fwb.a(:com.google.android.gms.optional_home@[email protected] (100400-0):162)
at m.fyb.b(:com.google.android.gms.optional_home@[email protected] (100400-0):166)
at m.qiw.bJ(:com.google.android.gms.optional_home@[email protected] (100400-0):14)
at m.qqy.run(:com.google.android.gms.optional_home@[email protected] (100400-0):114)
at m.dud.c(:com.google.android.gms.optional_home@[email protected] (100400-0):50)
at m.dud.run(:com.google.android.gms.optional_home@[email protected] (100400-0):76)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at aifk.run(:com.google.android.gms@[email protected] (100400-560151436):8)
at java.lang.Thread.run(Thread.java:919)
E bta_gattc_process_indicate, ignore HID ind/notificiation
E bta_gattc_process_indicate, ignore HID ind/notificiation
E Commissioning failed with state Failure obtaining credentials. [CONTEXT service_id=336 ]
m.evt: Failed to retrieve nonces.
at m.ewx.h(:com.google.android.gms.optional_home@[email protected] (100400-0):101)
at m.ews.b(:com.google.android.gms.optional_home@[email protected] (100400-0):12)
at m.qiw.bJ(:com.google.android.gms.optional_home@[email protected] (100400-0):14)
at m.qqy.run(:com.google.android.gms.optional_home@[email protected] (100400-0):106)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7615)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
Caused by: m.fwx: RPC GetCommissioningNonce returned code UNAUTHENTICATED; Sherlog for GetCommissioningNonce is needed to diagnose.
at m.fyb.b(:com.google.android.gms.optional_home@[email protected] (100400-0):314)
at m.qiw.bJ(:com.google.android.gms.optional_home@[email protected] (100400-0):14)
at m.qqy.run(:com.google.android.gms.optional_home@[email protected] (100400-0):114)
at m.dud.c(:com.google.android.gms.optional_home@[email protected] (100400-0):50)
at m.dud.run(:com.google.android.gms.optional_home@[email protected] (100400-0):76)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at aifk.run(:com.google.android.gms@[email protected] (100400-560151436):8)
at java.lang.Thread.run(Thread.java:919)
Caused by: m.plu: UNAUTHENTICATED: Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.
at m.dsn.m(:com.google.android.gms.optional_home@[email protected] (100400-0):17)
at m.dsn.l(:com.google.android.gms.optional_home@[email protected] (100400-0):170)
at m.fvn.a(:com.google.android.gms.optional_home@[email protected] (100400-0):37)
at m.fvz.a(:com.google.android.gms.optional_home@[email protected] (100400-0):49)
at m.fyb.b(:com.google.android.gms.optional_home@[email protected] (100400-0):166)
at m.qiw.bJ(:com.google.android.gms.optional_home@[email protected] (100400-0):14)
at m.qqy.run(:com.google.android.gms.optional_home@[email protected] (100400-0):114)
at m.dud.c(:com.google.android.gms.optional_home@[email protected] (100400-0):50)
at m.dud.run(:com.google.android.gms.optional_home@[email protected] (100400-0):76)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at aifk.run(:com.google.android.gms@[email protected] (100400-560151436):8)
at java.lang.Thread.run(Thread.java:919)
E [ERROR:bta_gattc_utils.cc(458)] bta_gattc_mark_bg_conn unable to find the bg connection mask for bd_addr=XXX
E Showing error status. [CONTEXT service_id=336 ]
m.gin: Failed to retrieve nonces.
at m.gpo.a(:com.google.android.gms.optional_home@[email protected] (100400-0):401)
at m.qxc.a(:com.google.android.gms.optional_home@[email protected] (100400-0):84)
at m.qzg.a(:com.google.android.gms.optional_home@[email protected] (100400-0):3)
at m.qzf.a(:com.google.android.gms.optional_home@[email protected] (100400-0):137)
at m.ele.b(:com.google.android.gms.optional_home@[email protected] (100400-0):362)
at m.qiw.bJ(:com.google.android.gms.optional_home@[email protected] (100400-0):14)
at m.qqy.run(:com.google.android.gms.optional_home@[email protected] (100400-0):106)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7615)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
Caused by: m.evt: Failed to retrieve nonces.
at m.ewx.h(:com.google.android.gms.optional_home@[email protected] (100400-0):101)
at m.ews.b(:com.google.android.gms.optional_home@[email protected] (100400-0):12)
at m.qiw.bJ(:com.google.android.gms.optional_home@[email protected] (100400-0):14)
at m.qqy.run(:com.google.android.gms.optional_home@[email protected] (100400-0):106)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7615)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
Caused by: m.fwx: RPC GetCommissioningNonce returned code UNAUTHENTICATED; Sherlog for GetCommissioningNonce is needed to diagnose.
at m.fyb.b(:com.google.android.gms.optional_home@[email protected] (100400-0):314)
at m.qiw.bJ(:com.google.android.gms.optional_home@[email protected] (100400-0):14)
at m.qqy.run(:com.google.android.gms.optional_home@[email protected] (100400-0):114)
at m.dud.c(:com.google.android.gms.optional_home@[email protected] (100400-0):50)
at m.dud.run(:com.google.android.gms.optional_home@[email protected] (100400-0):76)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at aifk.run(:com.google.android.gms@[email protected] (100400-560151436):8)
at java.lang.Thread.run(Thread.java:919)
Caused by: m.plu: UNAUTHENTICATED: Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.
at m.dsn.m(:com.google.android.gms.optional_home@[email protected] (100400-0):17)
at m.dsn.l(:com.google.android.gms.optional_home@[email protected] (100400-0):170)
at m.fvn.a(:com.google.android.gms.optional_home@[email protected] (100400-0):37)
at m.fvz.a(:com.google.android.gms.optional_home@[email protected] (100400-0):49)
at m.fyb.b(:com.google.android.gms.optional_home@[email protected] (100400-0):166)
at m.qiw.bJ(:com.google.android.gms.optional_home@[email protected] (100400-0):14)
at m.qqy.run(:com.google.android.gms.optional_home@[email protected] (100400-0):114)
at m.dud.c(:com.google.android.gms.optional_home@[email protected] (100400-0):50)
at m.dud.run(:com.google.android.gms.optional_home@[email protected] (100400-0):76)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at aifk.run(:com.google.android.gms@[email protected] (100400-560151436):8)
at java.lang.Thread.run(Thread.java:919)
Matter devices should be usable end-to-end without Internet, a Google account or "the cloud", this includes commissioning them.
from sample-apps-for-matter-android.
pierredelisle
commented on June 2, 2024
1
Agree that the error you point to is confusing, and I wonder if this is not related to something unrelated to Thread.
I'll ask someone in our engineering team to have a look.
However, if you could try the following:
(1) Commission a Thread Border Router via GHA
(2) Commission the Thread device via GHSAFM
Then it should work.
A Google account is definitely necessary for (1). This is what gets the Thread credentials into the Google ecosystem.
Note that I believe that using a Nanoleaf or Samsung TBR should work as well.
Also, we will have some Thread "developer utilities" coming up for the sample app. (My colleague Doug should have a PR out soon).
With that, you'll be able to:
- export your Thread credentials via a QR code
- import these credentials into Google Home infrastructure (in Google Play Services).
from sample-apps-for-matter-android.
pierredelisle
commented on June 2, 2024
This is using the "Google Home Application" (GHA), right?
Have you tried with the sample app in this GitHub project?
from sample-apps-for-matter-android.
pierredelisle
commented on June 2, 2024
Possible to know which device you are trying to commission? What's the VID/PID?
from sample-apps-for-matter-android.
zimmyxyz
commented on June 2, 2024
@pierredelisle, this a Nanoleaf Matter over Thread BR30 lightbulb: https://nanoleaf.me/en-US/products/essentials/bulbs/?category=BR30-E26&standard=matter&size=3
From "Commissionable Devices" in the Sample App:
VID: 0x115A
PID: 0x0035
I have many other Matter over Thread devices from other vendors I can try too if needed.
from sample-apps-for-matter-android.
pierredelisle
commented on June 2, 2024
Thanks. Do you have a Google Thread border router (e.g. Nest Hub)? Was it commissioned via GHA?
from sample-apps-for-matter-android.
zimmyxyz
commented on June 2, 2024
Thanks. Do you have a Google Thread border router (e.g. Nest Hub)?
I don't have a Nest, or even a Google account. I only have access to an OpenThread Border Router using a USB radio dongle (https://www.home-assistant.io/skyconnect/) & Home Assistant (to serve as a Matter Controller).
Was it commissioned via GHA?
I just compiled and ran the GHSAFM-3p-ecosystem app on my smartphone and went through the Set up without QR code process by punching in the code for device pairing while the lightbulb was in pairing mode (even though there's no Google Thread border router for the sample app to provide generated credentials to).
from sample-apps-for-matter-android.
pierredelisle
commented on June 2, 2024
A Thread Border Router is needed to support the commissioning of a Matter Thread device. If a Thread Border Router has been commissioned via GHA, then the Thread credentials are available via the Google Home APIs. Any app that uses these APIs will then be able to commission Matter Thread devices.
If you commission a WiFi Matter device, then this is not required, and your device can be commissioned by simply using the sample app.
from sample-apps-for-matter-android.
zimmyxyz
commented on June 2, 2024
Sorry, but I'm still not understanding why a Google account is needed to use the Google Home SDK API for Matter over Thread device commissioning. Since I already have a Thread border router and Matter controller connected I should be able to commission devices without "the cloud" or Internet by sending the generated credentials to them directly over my LAN.
I'm specifically speaking about the error line: UNAUTHENTICATED: Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project. in the stacktrace I posted above.
Are you saying that the device commissioning flow is:
Some Android Smart Home App using the Google Home API (GHA/GHSAFM-3p-ecosystem/Home Assistant Companion for example) --> Google Home API --> Bluetooth connection to Matter over Thread device for generating credentials --> Credentials received by Google Home API --> Upload generated credentials to Google's cloud which requires a Google account --> Thread Border Router downloads device credentials from Google's cloud servers?
from sample-apps-for-matter-android.
zimmyxyz
commented on June 2, 2024
@pierredelisle I gave the PR a try and was hoping it would let me dump the created credentials so I could import them into my own Matter controller software.
Unfortunately still running into the issue of GMS failing on the Caused by: m.plu: UNAUTHENTICATED: Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project. error before it even gets a chance to create the credentials. So still need that upstream issue resolved before the credential dumping feature can be used.
I'm going to try debugging GMS on a rooted device to figure what this mysterious Google API request is so we have better info about it soon.
from sample-apps-for-matter-android.
zimmyxyz
commented on June 2, 2024
@pierredelisle just got around to debugging the "authentication" issue with a rooted device and mitmproxy. I don't see any requests from Google Play Services that are responded to with a 4XX code. I do see a bunch of gRPC traffic to the URL https://googlehomefoyer-pa.googleapis.com/google.internal.home.foyer.v1.CHIPService/GetCommissioningNonce though. GetCommissioningNonce was mentioned in the error stacktrace:
Caused by: m.fya: RPC GetCommissioningNonce returned code UNAUTHENTICATED; Sherlog for GetCommissioningNonce is needed to diagnose.
at m.fze.b(:com.google.android.gms.optional_home@[email protected] (100400-0):314)
at m.qns.bN(:com.google.android.gms.optional_home@[email protected] (100400-0):14)
at m.qvx.run(:com.google.android.gms.optional_home@[email protected] (100400-0):114)
at m.dud.c(:com.google.android.gms.optional_home@[email protected] (100400-0):50)
at m.dud.run(:com.google.android.gms.optional_home@[email protected] (100400-0):76)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1137)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:637)
at ahvs.run(:com.google.android.gms@[email protected] (190400-567131450):8)
at java.lang.Thread.run(Thread.java:1012)
Caused by: m.pqp: UNAUTHENTICATED: Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.
at m.dsn.m(:com.google.android.gms.optional_home@[email protected] (100400-0):17)
at m.dsn.l(:com.google.android.gms.optional_home@[email protected] (100400-0):176)
at m.fwq.a(:com.google.android.gms.optional_home@[email protected] (100400-0):37)
at m.fxc.a(:com.google.android.gms.optional_home@[email protected] (100400-0):49)
at m.fze.b(:com.google.android.gms.optional_home@[email protected] (100400-0):166)
at m.qns.bN(:com.google.android.gms.optional_home@[email protected] (100400-0):14)
at m.qvx.run(:com.google.android.gms.optional_home@[email protected] (100400-0):114)
at m.dud.c(:com.google.android.gms.optional_home@[email protected] (100400-0):50)
at m.dud.run(:com.google.android.gms.optional_home@[email protected] (100400-0):76)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1137)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:637)
at ahvs.run(:com.google.android.gms@[email protected] (190400-567131450):8)
at java.lang.Thread.run(Thread.java:1012)
Can you maybe explain what this GetCommissioningNonce gRPC endpoint does/is for?
from sample-apps-for-matter-android.
zimmyxyz
commented on June 2, 2024
@pierredelisle could you please open a bug issue ticket on https://issuetracker.google.com/issues?q=componentid%3A655104 for this. I can't open one since I do not have a Google account
from sample-apps-for-matter-android.
pierredelisle
commented on June 2, 2024
Are you using a rooted device?
from sample-apps-for-matter-android.
pierredelisle
commented on June 2, 2024
Reason for asking whether you use a rooted device:
Basically the RPC is only meant to be used by GMSCore, so it uses a PKI signature to authenticate itself - but on a rooted device, because that could be faked, auth always fails.
from sample-apps-for-matter-android.
zimmyxyz
commented on June 2, 2024
@pierredelisle the original device I tried device commissioning with that got the UNAUTHENTICATED: Request is missing required authentication credential. error in logcat was NOT rooted. I recently got another phone for testing and rooted it to see if I could use root debugging privileges to figure out the specific details about the RPC request/response that was causing the UNAUTHENTICATED error. I used mitmproxy to record a bunch of RPC requests for the URL https://googlehomefoyer-pa.googleapis.com/google.internal.home.foyer.v1.CHIPService/GetCommissioningNonce but never managed to log the one request that got a 4XX response, which is what I was hoping to see. All the GetCommissioningNonce requests it intercepted and logged just got back 200 as a RPC response and no body, I never see an RPC request with an actual error response. I managed to find the APK that contains the code that causes the RPC auth error (dl-Home.optional_233614100400.apk in my case):
But like I said I never see the error RPC request, so I'm still unsure what's going on here. I thought the authentication error is due to not being signed into a Google account but at this point I'm not really sure. I will try to use my rooted device to breakpoint debug the RPC request soon and hopefully that will give some info about the error.
from sample-apps-for-matter-android.
Related Issues (20)
- How to get all fabrics from device HOT 3
- Custom commissioning UI | Get SSID and Password HOT 1
- coreLibraryDesugaringEnabled option in android/app/build.gradle causes immediate app crash with JNIReference Error HOT 3
- Problem with the commissioning in the Google Eco-System HOT 4
- Attestation failure not being returned in the delegate. HOT 6
- getDiscoveredDevice returns null with third_party/connectedhopmeip .jar and .so files HOT 3
- Device did not pass attestation (error(s)=[1, 5, 11]) HOT 11
- awaitCommissionDevice, errorCode 773 HOT 5
- Rebuilding CHIP libs
- Kotlin templates for CHIP commands, ClusterHelper HOT 1
- Attribute reporting -- chunking on Thread HOT 1
- Encountered 12 files that should have been pointers, but weren't HOT 8
- How to build CHIPTool libraries ? HOT 4
- Issue with Google Home Sample App with the Boarder Router. HOT 2
- Question: Multiple CHIPTools librairies HOT 6
- Crash by runDevicesPeriodicPing. HOT 1
- Documentation Misalignment with Current Repository HOT 5
- Voice commands HOT 1
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JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
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web
Some thing interesting about web. New door for the world.
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server
A server is a program made to process requests and deliver data to clients.
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Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
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Visualization
Some thing interesting about visualization, use data art
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Game
Some thing interesting about game, make everyone happy.
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Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
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Microsoft
Open source projects and samples from Microsoft.
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Google
Google ❤️ Open Source for everyone.
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Alibaba
Alibaba Open Source for everyone
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D3
Data-Driven Documents codes.
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Tencent
China tencent open source team.
from sample-apps-for-matter-android.