Connectivity | π Makes Internet connectivity detection | Wifi library
kandi X-RAY | Connectivity Summary
kandi X-RAY | Connectivity Summary
Connectivity 5.0.0 provides support for Xcode 12 and raises the minimum deployment target to iOS 9 (dropping support for iOS 8).
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Connectivity
Connectivity Key Features
Connectivity Examples and Code Snippets
def checkBipartite(graph):
queue = Queue()
visited = [False] * len(graph)
color = [-1] * len(graph)
def bfs():
while not queue.empty():
u = queue.get()
visited[u] = True
for neighbour in g
Community Discussions
Trending Discussions on Connectivity
QUESTION
I am using the BluetoothLeGatt example from here: https://github.com/android/connectivity-samples/tree/master/BluetoothLeGatt
Assume BLE connection, service and characteristic detection have all happened properly. The following data being sent is value of a characteristic.
From a custom BLE device, I am sending an array of bytes to the smartphone, for example, something line {0x00, 0x01, 0x02, 0x03, 0x04}. In the android program this is received inside the onReceive() function inside BroadcastReceiver mGattUpdateReceiver
in DeviceControlActivity.java
The line
...ANSWER
Answered 2021-Jun-15 at 04:38The example you are using receives the data as a byte array already, but it appends hex representation to the data as string. This is why you get your data in both representations.
You will need to change the example in the file BluetoothLeService.java
on line 149. It is currently reading
intent.putExtra(EXTRA_DATA, new String(data) + "\n" + stringBuilder.toString());
and you would need to change it to
intent.putExtra(EXTRA_DATA, new String(data) + "\n");
if you want to receive only the string representation.
QUESTION
I'm running gitlab-ce on-prem with min.io as a local S3 service. CI/CD caching is working, and basic connectivity with the S3-compatible minio is good. (Versions: gitlab-ce:13.9.2-ce.0
, gitlab-runner:v13.9.0
, and minio/minio:latest
currently c253244b6fb0
.)
Is there additional configuration to differentiate between job-artifacts and pipeline-artifacts and storing them in on-prem S3-compatible object storage?
In my test repo, the "build" stage builds a sparse R package. When I was using local in-gitlab job artifacts, it succeeds and moves on to the "test" and "deploy" stages, no problems. (And that works with S3-stored cache, though that configuration is solely within gitlab-runner
.) Now that I've configured minio as a local S3-compatible object storage for artifacts, though, it fails.
ANSWER
Answered 2021-Jun-14 at 18:30The answer is to bypass the empty-string test; the underlying protocol does not support region-less configuration, nor is there a configuration option to support it.
The trick is able to work because the use of 'endpoint'
causes the 'region'
to be ignored. With that, setting the region to something and forcing the endpoint allows it to work:
QUESTION
There are two EC2 windows instance placed in same VPC and same public subnet having same security group. I want to check if both are able to communicate with each other using ping command. I have added rules at both security group and NACL level. ALL ICMP is also been included exclusively other than "all" traffic. but I am not able to test the same. kindly suggest if there is any other way I can check connectivity between two ec2 windows instances?
...ANSWER
Answered 2021-Jun-11 at 16:46If the two EC2 instances are in the same VPC, Subnet, and Security Group you just need to check that the following is in place:
- Security Group allows inbound ALL ICMP is from self (self reference the security group id)
- Security Group outbound ALL TRAFFIC is allowed.
- Subnet has a route to LOCAL in the VPC
QUESTION
My Problem database connectvity WARN: SQL Error: 0, SQLState: 08001 May 18, 2021 8:08:09 PM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions ERROR: No suitable driver found for I faced problem with database connectivity .I am using Eclispse Database 10g Tomcat 8.5 Ojdbc 14
My Code is hibernate.cfg.xml
...ANSWER
Answered 2021-May-19 at 03:51Why the connection url property value left empty?
Below are the working properties, try it out and let me know for any issues.
QUESTION
I've had a lot of issues with this application because I am simply not good enough yet, but I am almost done with it and just want to finish it so I can move on to some slightly lower level projects.
It is a tkinter to-do application.
You can add a Task to a listbox
For every Task
, there are some associated attributes, among others: ````self.value = vand
self.connectivity = c. The hierarchy of the tasks displayed in the listbox is determined by the value of
val_var``` (e.g. the higher the value the higher on the list it will be displayed).
The Task and the associated attributes are determined by the user's input when one creates another task.
The Task
is appended to a list task_list
and after the user has added more than 1 task to the list, the next time one adds a task one will have the option to check existing tasks that it is connected with somehow.
The list is sorted so the task with the highest value (val_var
) is displayed at the top of the Listbox and the task with the lowest value is displayed at the bottom of the Listbox.
You can "Save tasks" and then launch the application at a later time where you can then "Load tasks".
Issue 1:
After loading tasks from a saved .dat file, it displays in the Listbox in the order it was saved in. However, if you now want to add another task at least two undesirable things happen:
- The tasks now loaded into the Listbox are now not displayed as checkbuttons upon adding a new task.
- When you add another task (again this is after loading the .dat file) the Listbox will delete what was just loaded and the Listbox will only display the newly added task.
I am somehow interested in being able to load the Tasks
instances from the .dat file and then append them to the task_list so they are a part of the current session/instance of the application, but I don't know how one might do that.
Issue 2:
On a given session where tasks have been added to the Listbox, they can be deleted from the listbox using the "Delete task" button. The selected task in the Listbox is deleted, but it is not the same task that is deleted from the task_list
.
To test what I mean by this one can add a couple of tasks to the Listbox and then delete one after doing so. Notice upon trying to create yet another new task that the one just deleted from the Listbox will still be shown as a checkbutton - however, another task that wasn't just deleted has now vanished as a checkbutton.
Any help with these issues will be sincerely appreciated.
Here's the code:
...ANSWER
Answered 2021-Jun-11 at 04:24Your problem is fairly simple. You need to save the objects of the Task
class instead of saving the strings present inside the Listbox.
That said you should never give bare except clause like the one you did, always specify the exception you want to catch. You will find it hard to find the exact problem if you don't.
For example In this block of your code:
QUESTION
I am planning to use Janusgraph for building graph of different uses our team handles and I see that janus graph has option to use BigTable or Cassandra as storage backend. I am looking for any recommendation on which backend is more optimal/performant ( I am mainly talking about gremlin query performance on 2 hop neighbor of a node ) with JanusGraph.
I understand that performance is pretty subjective and varies based on datasize/graph connectivity and use case so best approach will be to try out myself, which I am planning to do. But has anyone else has done similar performance comparison ? Is there any general recommendation about storage backend here ?
...ANSWER
Answered 2021-Jun-10 at 18:14You're right in that performance is both:
- subjective
- depends largely on data size
I can tell you that I have done this exercise as well. To that end, I think it's important to share this comparison from DB-Engines.com.
In terms of performance, the biggest thing I'd be looking at is how each handles consistency. As a general rule, databases which enforce stronger levels of consistency typically have to sacrifice performance.
- BigTable == strong-consistent
- Cassandra == eventually consistent
Other factors worth considering, are the fact that BigTable limits you to Google Cloud (GCP). And if you don't want to lose performance over the network, you'll also need to pay for more (Janus) instances on GCP for data locality.
In terms of raw DB-Engine "score," Cassandra is currently at 114.112, while BigTable is at a paltry 3.582. These scores will change month-to-month, but in general this signifies that Cassandra has a much stronger community around it. Similarly, Cassandra has 18182 questions on this site, while BigTable only has 449. Bottom line, is that it'll be much easier to get support and answers to questions.
Just based on the underlying strength of the community, Cassandra is the better option here.
Having supported JanusGraph on Cassandra for the last few years, I can tell you that overall it's been solid. The difficulties tend to come into play with bulk data loading. But outside of that, things seem to run pretty well.
QUESTION
I'm loading a data file to a SQL server database using bcp utility. There are some scenarios where while loading huge files, the load fails at mid way due to connectivity issues.
I can identify how many records are loaded in database. Assuming n records are loaded, is there a way we can resume loading of file in the bcp from n+1 th line instead of from the 1st line? Is there any parameter we can give in the bcp command to make this work?
...ANSWER
Answered 2021-Jun-09 at 20:31Yes. BCP has a -F parameter that will let you specify a 1-based offset. So, if you wanted to skip the first 1000 rows, you'd do:
QUESTION
I run my Android app (based on Java), and it works. Next, I add to my app code:
FirebaseFirestore fdb = FirebaseFirestore.getInstance();
This code I got from the official Android site https://firebase.google.com/docs/firestore/quickstart
App runs, but next the running device shows the message "app has stopped".
I use a device simulator available in Android Studio.
It is my first Android app, and I can't understand what is going.
----Trace------ 2021-06-08 20:57:30.186 7155-7155/? D/AndroidRuntime: >>>>>> START com.android.internal.os.RuntimeInit uid 2000 <<<<<< 2021-06-08 20:57:30.188 7155-7155/? D/AndroidRuntime: CheckJNI is ON 2021-06-08 20:57:30.210 7155-7155/? W/art: Unexpected CPU variant for X86 using defaults: x86 2021-06-08 20:57:30.214 7155-7155/? D/ICU: No timezone override file found: /data/misc/zoneinfo/current/icu/icu_tzdata.dat 2021-06-08 20:57:30.229 7155-7155/? E/memtrack: Couldn't load memtrack module (No such file or directory) 2021-06-08 20:57:30.229 7155-7155/? E/android.os.Debug: failed to load memtrack module: -2 2021-06-08 20:57:30.230 7155-7155/? I/Radio-JNI: register_android_hardware_Radio DONE 2021-06-08 20:57:30.239 7155-7155/? D/AndroidRuntime: Calling main entry com.android.commands.am.Am
...ANSWER
Answered 2021-Jun-09 at 03:39At the end of your log, just before the initial crash. there is a warning:
Default FirebaseApp failed to initialize because no default options were found. This usually means that com.google.gms:google-services was not applied to your gradle project.
simply adding com.google.gms:google-services
should fix any issues you have, if you have issues, ensure your Gradle cache is cleared or run without the build cache
--no-build-cache
QUESTION
My organization had a security audit and was told that we need to DISABLE the "allow remote connection to this server" option for all of our SQL Servers. What impact would this have on connection to the SQL Server via Management Studio (SSMS) from a client machine/desktop or from a web app that might use a connection string or any other external app? All of the documentation I see regarding connectivity issues to a SQL Server seem to include "ENABLING" this option as a solution. Is there a workaround that will allow us to disable it but still allow the access we need from the target clients?
We have multiple versions that we would be doing this on 2012, 2014, 2016 and 2017.
...ANSWER
Answered 2021-Jun-07 at 20:44The "allow remote connection to this server" option in SSMS (Server Properties-->Connections) is actually the remote access
configuration option. This option is often mistaken for enabling remote network connectivity via SQL Server Configuration Manager, which might be what you've read.
The remote access option is a long deprecated feature that will be removed in a future SQL Server version. It will likely have no impact but your environment may be atypical so you may want to first test in a pre-prod environment before making the change in prod.
Below is the excerpt from the documentation.
The remote access option controls the execution of stored procedures from local or remote servers on which instances of SQL Server are running. This default value for this option is 1. This grants permission to run local stored procedures from remote servers or remote stored procedures from the local server. To prevent local stored procedures from being run from a remote server or remote stored procedures from being run on the local server, set the option to 0.
QUESTION
I'm trying to set up my environment to use Yocto's generated SDK to compile my out-of-tree module, but for some reason, I'm getting an error.
cp: cannot stat 'arch/arm/kernel/module.lds': No such file or directory
I'm using Poky distribution and meta-raspberrypi which is needed because I'm using the RPI ZeroW board. Apart from this everything works fine. I'm able to compile the entire image and load it on the board.
Here is the line I've added to local.conf
TOOLCHAIN_TARGET_TASK_append = " kernel-devsrc"
as I've found in the documentation.
Also below you can find the whole log from the compilation.
...ANSWER
Answered 2021-Jun-07 at 11:16Missing the module.lds file in the latest kernel. Apply the following source code as a patch in the kernel and build the image.
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