network-programming | Source code collection of network programming using Python | Natural Language Processing library
kandi X-RAY | network-programming Summary
kandi X-RAY | network-programming Summary
Source code collection of network programming using Python
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Top functions reviewed by kandi - BETA
- Main entry point .
- Loop forever .
- Handle the incoming request .
- Print a value .
- Open a TCP socket .
- Initialize the thread .
- Stop the thread .
- Handle parsing of a start tag .
- The worker .
- Return current time .
network-programming Key Features
network-programming Examples and Code Snippets
Community Discussions
Trending Discussions on network-programming
QUESTION
I am building a website using the Holy Grail Layout and while it looks fine currently on my laptop and desktop computers, it looks terrible on my phone and does not resize correctly at all. I cannot even see half of the page despite having a media query to try and address this as well as using dynamically sized HTML elements in the rest of my CSS. Here is my code, I am not sure what my issue is currently as my media query doesn't seem to do anything.
...ANSWER
Answered 2022-Mar-12 at 21:33Your media query only has one break point at 800px;
QUESTION
I am working on a desktop application written in Qt that does not connect to the internet (apart from through a third-party licencing application). I would like to ping a server with a piece of identifiable user information (e.g. their software key, email, IP) every time a user logs on, so it is possible to can track how many people are using the software.
I have very little experience with network programming but Qts API looks promising (https://doc.qt.io/qt-5/qtnetwork-programming.html). More generally, because I am very concerned about degrading existing user experiences with firewall popups, or security issues of sending data from their desktop / network, is there anything further related to this to be aware of? Many guides go through the steps to setup a TCP connection for example, which looks trivial, but do not go into details on these kind of wider issues.
If anyone can reccomending reading on this issue it would be much appreciated as am a bit lost where to start.
...ANSWER
Answered 2021-Nov-08 at 15:54I suggest you to take a look to Qt examples and tutorial, and more specifically those for networking. The solution will depend of what you will have on the server side (API, socket, ping ?).
In all cases, you will trigger the firewall when you contact your server, there is no way to avoid it.
In matter of security, use HTTPS and if your server support it, better use TLS than SSL protocol. Latest Qt version support both SSL 3 and TLS 1.2, .
QUESTION
I am connecting to a server via TCP socket and sending in strings of data and expecting responses. The responses are unique to the request string and there are two responses per request. One that says the server completed an intermediate task and another indicating the task is complete. These tasks take up to about 20 seconds to complete. Note - I have no access to the server program/code its proprietary.
The client should be able to send in string requests anytime and sometimes fairly quickly. Requests could stack up and the client needs to wait for the unique responses to each request as they are received.
Assuming this needs an asynchronous client I am using the example right from the MS site.
Developing in a console app, I am able to connect and send string requests and I get one response back. The program then exits. New to async sockets I'm not sure how to keep the socket "alive" or open and randomly Console.Read new strings, send them, and get both responses as they are received.
Here is my client code.
...ANSWER
Answered 2021-Aug-26 at 21:31At the very least, you could wrap your read-send-receive logic in a loop:
QUESTION
I have tried both Client and Server Documentation from microsoft: https://docs.microsoft.com/en-us/dotnet/framework/network-programming/asynchronous-client-socket-example https://docs.microsoft.com/en-us/dotnet/framework/network-programming/asynchronous-server-socket-example This works fine but it just doesn't allow me to keep the connection with a reference to each connection so that I can keep sending data back and forth, tried googling alot but can't find anything related to the topic and couldn't really understand how to edit the code for that, Can someone do a demo or walk me through ?
...ANSWER
Answered 2021-Jun-22 at 23:07Found Answer, Use CavemanTCP or SimpleTCP, Those libraries are straightforward and implements everything to be used directly in C# Links: https://github.com/jchristn/CavemanTcp https://github.com/jchristn/SimpleTcp -- Thanks for the 30 views who watched and never did anything to help!
QUESTION
I am building an Windows Form-based app that listens on a port and when it receives a specific command, it opens a window (Form) that requests input.
My problem is that even though I am using a delegated method to open the window, only the window furniture/border is drawn. The contents of the form are not rendered at all.
From searching other answers on S.O., there seem to be two causes for this:
InitializeComponent()not being called- Trying to open the window from a non-UI thread
It appears that #2 is my problem. When I compare the ManagedThreadId in the form constructor and from the callback delegate, they are different.
As far as I can tell from the docs, the delegate should ensure that the callback is run on the UI thread. Can anyone suggest why it isn't?
Below is a simplified version of what my code looks like.
The form
...ANSWER
Answered 2021-May-03 at 06:07As far as I can tell from the docs, the delegate should ensure that the callback is run on the UI thread. Can anyone suggest why it isn't?
There are no docs that should suggest that. I.e. it's not sufficient simply to use a delegate. You have to invoke the delegate using a mechanism that would move that invocation onto the UI thread, and there's nothing like that in the code you posted above. You seem to have misunderstood whatever it was that you read.
The issue with your code is that you appear to have confused the compiler-generated Invoke() method for a delegate with the framework-provided Control.Invoke() method. Your code calls the former, while you should be calling the latter. All that the former does is to actually invoke the delegate; the latter is what handles marshaling the execution of a delegate onto the UI thread so it can be executed there.
Frankly, it's a mistake for the socket-related code to try to address this at all. In the ListenThread() method, just raise the event normally (which ironically is the syntax you're using, so actually you don't need to change anything there). In your OpenFormCommandHandler() method, then you should call the Control.Invoke() method to execute whatever code you need to execute there, such as creating and showing a new form.
Based on your recent edit, in theory here is how you would change your event handler:
QUESTION
I am strugling to find a way to convert this function to C#. could you give me a hand? I have found how to fetch data from the server and get the response using this information here but was not able to find a way to get the indexof and substring the same way this code is doing.
...ANSWER
Answered 2021-Mar-04 at 20:08I translated the code for you, I think this is what you wanted?
QUESTION
Reading the https://www.amazon.com/Unix-Network-Programming-Sockets-Networking/dp/0131411551, chapter
8.14 Determining Outgoing Interface with UDP
A connected UDP socket can also be used to determine the outgoing interface that will be used to a particular destination. This is because of a side effect of the connect function when applied to a UDP socket: The kernel chooses the local IP address (assuming the process has not already called bind to explicitly assign this). This local IP address is chosen by searching the routing table for the destination IP address, and then using the primary IP address for the resulting interface.
If I try to run the example (udpcli01.c):
...ANSWER
Answered 2021-Jan-18 at 19:14You're passing the address of a struct sockaddr_in to the inet_ntop function. For an AF_INET socket it expects a pointer to a struct in_addr.
So instead of this:
QUESTION
I am reading https://www.amazon.com/Unix-Network-Programming-Sockets-Networking/dp/0131411551, and there the author handle the sigchld in handler that calls waitpid rather then wait.
In Figure 5.7, we cannot call wait in a loop, because there is no way to prevent wait from blocking if there are running children that have not yet terminated.
The handler is as follows:
...ANSWER
Answered 2021-Jan-01 at 20:51The while loop condition will run one more time than there are zombie child processes that need to be waited for. So if you use wait() instead of waitpid() with the WNOHANG flag, it'll potentially block forever if you have another still running child - as wait() only returns early with an ECHLD error if there are no child processes at all. A robust generic handler will use waitpid() to avoid that.
Picture a case where the parent process starts multiple children to do various things, and periodically sends them instructions about what to do. When the first one exits, using wait() in a loop in the SIGCHLD handler will cause it to block forever while the other child processes are hanging around waiting for more instructions that they'll never receive.
Or, say, an inetd server that listens for network connections and forks off a new process to handle each one. Some services finish quickly, some can run for hours or days. If it uses a signal handler to catch exiting children, it won't be able to do anything else until the long-lived one exits if you use wait() in a loop once that handler is triggered by a short-lived service process exiting.
QUESTION
In my network-programming course, I've come across the following function, which initializes a struct of type _body:
ANSWER
Answered 2020-Dec-14 at 13:24Writing :
QUESTION
I am beginner for IP/TCP, but reading Addison Wesley : UNIX Network Programming Volume 1, I have the following code:
...ANSWER
Answered 2020-Nov-29 at 18:35Give yourself something to connect with locally first. Try nc -v -l 13 to run netcat listening on port 13, for example, before running your program in a separate terminal. Sorry, I don't have enough rep to only comment.
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You can use network-programming like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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