Conn | Minimal yet modular networking layer for Swift | iOS library
kandi X-RAY | Conn Summary
kandi X-RAY | Conn Summary
When writing networking layers, it´s common to end with a lot of boilerplate or repeated code. There are currently some libraries that one can use in order to improve code readability and to avoid writing boilerplate, but they are usually so bloated that one doesn´t use the half of what that library offers. On the other hand, there are some other libraries that are lightweight, but they often fall short when you need more advanced functionality. Conn is the library that resolves this issue. It is very lightweight (118 lines counting empty lines until now), but it is still highly modular while it doesn't require the developer to write any boilerplate. You can read more about the reasoning behind this library in my article in Medium.
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QUESTION
I am trying to run Oracle db in docker on M1 Mac. I have tried images from both store/oracle/database-enterprise:12.2.0.1-slim and container-registry.oracle.com/database/enterprise:12.2.0.1-slim but getting the same error.
docker run -d -it --name oracle -v $(pwd)/db/oradata:/ORCL store/oracle/database-enterprise:12.2.0.1-slim
I also tried non-slim version and by providing the --platform linux/amd64 to the docker command. Result is same.
Here's the result of docker logs -f oracle
ANSWER
Answered 2021-Aug-04 at 20:48There are two issues here:
- Oracle Database is not supported on ARM processors, only Intel. See here: https://github.com/oracle/docker-images/issues/1814
- Oracle Database Docker images are only supported with Oracle Linux 7 or Red Hat Enterprise Linux 7 as the host OS. See here: https://github.com/oracle/docker-images/tree/main/OracleDatabase/SingleInstance
Oracle Database ... is supported for Oracle Linux 7 and Red Hat Enterprise Linux (RHEL) 7. For more details please see My Oracle Support note: Oracle Support for Database Running on Docker (Doc ID 2216342.1)
The referenced My Oracle Support Doc ID goes on to say that the database binaries in their Docker image are built specifically for Oracle Linux hosts, and will also work on Red Hat. That's it.
Because Docker provides process level virtualization it still pulls kernel and other OS libraries from the underlying host OS. A Docker image built for Oracle Linux needs an Oracle Linux host; it doesn't bring the Oracle Linux OS with it. Only Oracle Linux or Red Hat Linux are supported for any Oracle database Linux installation, with or without Docker. Ubuntu, Mac OS, Debian, or any other *NIX flavor will not provide predictable reliable results, even if it is hacked into working or the processes appear to work normally.
QUESTION
I want to download/scrape 50 million log records from a site. Instead of downloading 50 million in one go, I was trying to download it in parts like 10 million at a time using the following code but it's only handling 20,000 at a time (more than that throws an error) so it becomes time-consuming to download that much data. Currently, it takes 3-4 mins to download 20,000 records with the speed of 100%|██████████| 20000/20000 [03:48<00:00, 87.41it/s] so how to speed it up?
ANSWER
Answered 2022-Feb-27 at 14:37If it's not the bandwidth that limits you (but I cannot check this), there is a solution less complicated than the celery and rabbitmq but it is not as scalable as the celery and rabbitmq, it will be limited by your number of CPU.
Instead of splitting calls on celery workers, you split them on multiple processes.
I modified the fetch function like this:
QUESTION
I was using pyspark on AWS EMR (4 r5.xlarge as 4 workers, each has one executor and 4 cores), and I got AttributeError: Can't get attribute 'new_block' on . Below is a snippet of the code that threw this error:
...ANSWER
Answered 2021-Aug-26 at 14:53I had the same error using pandas 1.3.2 in the server while 1.2 in my client. Downgrading pandas to 1.2 solved the problem.
QUESTION
After upgrading to android 12, the application is not compiling. It shows
"Manifest merger failed with multiple errors, see logs"
Error showing in Merged manifest:
Merging Errors: Error: android:exported needs to be explicitly specified for . Apps targeting Android 12 and higher are required to specify an explicit value for
android:exportedwhen the corresponding component has an intent filter defined. See https://developer.android.com/guide/topics/manifest/activity-element#exported for details. main manifest (this file)
I have set all the activity with android:exported="false". But it is still showing this issue.
My manifest file:
...ANSWER
Answered 2021-Aug-04 at 09:18I'm not sure what you're using to code, but in order to set it in Android Studio, open the manifest of your project and under the "activity" section, put android:exported="true"(or false if that is what you prefer). I have attached an example.
QUESTION
I'm using Flask Mail to send emails from my Flask App. No problem using it from the main thread. However I have a route that can send a quite large amount of emails (enough I think to exceed the HTTP Timeout) and I'd like to quickly return a response and running the mail send in the background.
I tried the following solution :
...ANSWER
Answered 2022-Feb-20 at 13:04Manually push a context:
QUESTION
Forgive me for the newb question, but I am confused and obviously not understanding the fundamentals or explanations of how to use a Websocket server hosted over HTTPS. Everything I find online leads me to have more questions than answers.
I have a Websocket server hosted on my HTTPS website using Java code.
This is my WebsocketServer.java file:
ANSWER
Answered 2022-Jan-13 at 14:50Keep it easy.
Certs inside your application are complex - they are hard to manage and you will get problems to run your application in a modern cloud environment (start new environments, renew certs, scale your application, ...).
Simple conclusion: Dont implement any certs.
How-to get encrypted connections?As Mike already pointed out in the comments: WebSockets are just upgraded HTTP(S) connections. A normal webserver (nginx, apache) takes care about the certs. It can be done in kubernetes (as ingress-controller) or with a "bare-metal" webserver.
Both of them should act as a reverse-proxy. This means: Your java-application doesn't know anything about certs. It has just unencrypted connections - like in your code on port 6868.
But the client will not use this port. 6868 is only internally reachable.
The client will call your reverse-proxy at the normal HTTPS port (=443). The reverse-proxy will forward the connection to your java-application.
Here some links for further information:
QUESTION
For the past 3 days now I have been struggling with an issue with MySQL connector in C#. Basically, I follow the MySQLConnector tutorial to open my connection in order to send data, but when I get to the MySQLConnection.Open() method, my code throws a SSL Connection error. Here is the code:
...ANSWER
Answered 2021-Aug-18 at 21:46When you go on mysql connection strings
You will see connection string with TCP port in it like this, try with this connection string construction:
Server=myServerAddress;Port=1234;Database=myDataBase;Uid=myUsername;Pwd=myPassword;
Also are you sure you are using right port?
QUESTION
How to validate radio button if at least one in the question is not answered. If you wondered I use while loop in html to display all the questions. I'm trying the server side validation because I have no idea on how to validate in Javascript.
Sample Question Output Do you have a fever or temperature over 38 °C? * Yes No --other questions here
...ANSWER
Answered 2022-Jan-13 at 01:52Add the required attribute to all input tags.
e.g:
QUESTION
In Excel VBA with the SQLite ODBC Driver, my simple SELECT query run against a single table retrieves 'long' integers (10 or more decimal places) incorrectly. How can these values be retrieved correctly, without truncation or whatever garbling is going on?
(PLEASE NOTE: the database structure/field definitions can't be modified — the database belongs to an open source application, Anki, and changing the structure would break the software.)
The particular table I'm querying contains (at least) several fields that can contain longer integer values (10 or more decimal places). The primary key ("id") contains Unix timestamp (datetime) values, with milliseconds, so the integer in the primary key field always occupies 13 decimal places.
Here is the table definition:
...ANSWER
Answered 2022-Jan-02 at 17:15As commented, essentially the issue derives from how to include the BigInt parameter in connection string. While MSDN documentation appears to differ from implementation, key/value pairs should avoid whitespaces:
QUESTION
I was writing an application and I had this issue, looking the code over and over, nothing seems to be wrong, tested with the below basic snippet and the issue is reproducible .... RabbitMQ is saying the queue is always empty when it is not.
The below Golang snippet shows a producer sending messages more often than the consumer consuming them. The consumer is always active but sleeping longer to make the queue have messages in its backlog. Result? The consumer fetches messages each time it tries however the API is always saying there are no messages -> message count is 0.
...ANSWER
Answered 2021-Nov-27 at 15:36The field q2.Messages is unreliable, it is the count of messages not awaiting acknowledgment, i.e. messages already ACK'ed.
Your consumer is declared with autoAck = true — i.e. noAck —, which means that no acknowledgements are expected, which means that there are zero messages already ACK'ed.
When you comment out the consumer, the number of acknowledged messages likely depends on the publisher buffer.
Getting a precise number of messages programmatically on a given queue with AMQP 0.9.1 is basically not possible. You may use the message_stats field in the management API instead:
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