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Service and Characteristic are not published by the connected device -...
Service and Characteristic are not published by the connected device，报错如下：
问题原因：硬件/蓝牙芯片问题导致的，比如A硬件测试好的，换了B硬件没有修改uuid，就出现这个报错。
由于B硬件没有发布这些特征，就会报这个错误。
Cannot download Docker images behind a proxy
...A quick outline:
First, create a systemd drop-in directory for the Docker service:
mkdir /etc/systemd/system/docker.service.d
Now create a file called /etc/systemd/system/docker.service.d/http-proxy.conf that adds the HTTP_PROXY environment variable:
[Service]
Environment="HTTP_PROXY=http://pro...
Android 4.3 Bluetooth Low Energy unstable
...ising
Better not use android.bluetooth.BluetoothAdapter#startLeScan(UUID[] serviceUuids, LeScanCallback callback) with the parameter to filter for certain service UUIDs because this is broken completely in Samsung Galaxy S3 with Android 4.3 and doesn't work for 128bit UUIDs in general.
Gatt always c...
What's an appropriate HTTP status code to return by a REST API service for a validation failure?
...as not made it into HTTP 1.1, RFC-7231.
Richardson and Ruby's RESTful Web Services contains a very helpful appendix on when to use the various HTTP response codes. They say:
400 (“Bad Request”)
Importance: High.
This is the generic client-side error status, used when no other 4xx error...
How to change port number for apache in WAMP
... notepad. Once again click on the wamp server icon and
select restart all services. One more change needs to be made before we are
done. In Windows Explorer find the location where WAMP server was installed
which is by Default C:\Wamp.
Update : On a newer version of WAMP, click the WAMP server...
Dependency Injection vs Factory Pattern
...
@PhilGoetz What you are describing sounds more like the Service Locator pattern. They have similar goals, in that they aim to decouple services from their consumers. However, there are many disadvantages to the Service Locator pattern. Mainly, hiding dependencies is not a good thi...
Best practice for partial updates in a RESTful service
I am writing a RESTful service for a customer management system and I am trying to find the best practice for updating records partially. For example, I want the caller to be able to read the full record with a GET request. But for updating it only certain operations on the record are allowed, like ...
AngularJS and its use of Dollar Variables
...torial/step_05
'$' Prefix Naming Convention
You can create your own services, and in
fact we will do exactly that in step 11. As a naming convention,
angular's built-in services, Scope methods and a few other angular
APIs have a '$' prefix in front of the name. Don't use a '$' prefix
...
What difference between Jersey vs jax-rs
...olkit with
additional features and utilities to further simplify RESTful service
and client development. Jersey also exposes numerous extension SPIs so
that developers may extend Jersey to best suit their needs.
share...
HTML5 check if audio is playing?
... thread, I use this implementation to figure out if the sound is playing:
service.currentAudio = new Audio();
var isPlaying = function () {
return service.currentAudio
&& service.currentAudio.currentTime > 0
&& !service.currentAudio.paused
&& ...