network-programming

问题 A friend likes to limit his applications to a use a certain bandwidth-limit. Seen as he doesn't have the widest connection and - for example - not every application that downloads/uploads has the ability to throttle/limit their downloads/uploads (Like Steam or a torrent downloader.). So he was wondering if I could maybe put something together since I fiddle around with WinForms often. I recommended NetLimiter and NetBalancer, but I was curious as to whether I could make this in C# myself. I

问题 I want to implement and unit test (not necessarily TDD) a client application which communicates with a TCP server using in a certain application protocol. I've seen in places such as here (1) and here (2) that protocol code should be preferably decoupled from the network code so I each one can be unit-tested separately. However I'm failing to understand how should I design and implement those parts. The first link talks about a MyProtocolHandler class with methods HelloMessage() and

问题 I have the following problem. I programmed a simple Echo Server and Echo Client but the problem is that in the loop of the Server, where I read from the Buffered Reader, the programme stuck and it won't write. import java.net.*; import java.util.*; import java.io.*; public class SimpleServer { public static void main(String[] args) { System.out.println("Dies ist ein simpler Echo Server"); int port = 6000; try { ServerSocket server = new ServerSocket(port); //server.setSoTimeout(30000); System

问题 Ready device for sending mms works fine in Kitkat but Pro KitKat version startUsingNetworkFeature is depreciated. final int result = mConnMgr.startUsingNetworkFeature( ConnectivityManager.TYPE_MOBILE, "enableMMS"); final ProgressDialog dialog = ProgressDialog.show(mContext, "", getString(R.string.compose_thread_dailog_converting_multi)); if (result != 0) { IntentFilter filter = new IntentFilter(); filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION); receiver = new BroadcastReceiver() {

问题 I have to communicate with some device over UDP. The problem is that QUdpSocket doesn't not work at all without special case of bind(). I use the connectToHost() method for access to read()/write() functions. UDP exchange not working at all when using the code: m_udp.connectToHost(QHostAddress("192.168.100.15"), 4001); m_udp.waitForConnected(); The I don't receive any bytes. Message in Wireshark: The below code doesn't work too: m_udp.bind(QHostAddress("192.168.100.15"), 4001); m_udp

问题 Is there any way to keep track of users accessing my shiny app that is shared internally, through: runApp(list(ui=ui, server=server), host="0.0.0.0", port=1234) Also, I was wondering if one can add semaphores to restrict the access of some IPs. Thank you. 来源： https://stackoverflow.com/questions/50396350/monitoring-a-shiny-app-shared-in-my-internal-network

问题 I am trying to use the program DigiKey have made for their Amazon Dash Button hack to monitor for when the button is pressed and then send a HTTP GET to IFTTT. I am using a Raspberry Pi to run this. Source: import socket import struct import binascii import time import json import urllib2 # Use your own IFTTT key ifttt_key = 'example_key' # Set these up at https://ifttt.com/maker ifttt_url_button = 'https://maker.ifttt.com/trigger/button_pressed/with/key/' + ifttt_key # Replace this MAC

问题 I'm attempting to implement the Haskell IRC bot tutorial in Rust and am having some difficulty reading what the server sends me after connecting. What seems to happen is that I connect, read ~5 KB from the server, and then roughly 240 seconds later everything is dumped at once instead of being read line-by-line. The connection is closed by a ping timeout, which should happen eventually, since I don't yet have a ping-pong function to reply with. Here's what I have so far: use std::io::{Read,

问题 I'm trying to generate a small-world type of network (https://en.wikipedia.org/wiki/Small-world_network) in my Netlogo model which is created throughout the model itself; people get to know one another while the model is running. I know how to generate a small world model in Netlogo in the setup . But how do you generate a small world network on the go ? My code for generating a small world during the setup is as follows. breed [interlinks interlink] ;links between different breeds breed

问题 I'm using sockets for communication between various processes right now. Everything is running on the same machine, so there is no packet loss, and I also don't get read timeouts etc. The messages are typically small blobs of data (JSON, sometimes binary.) Now I want to do cross-machine communication. The client/server connection usually looks like this: The client tells the server to start some processing (passing in the task description), the server does the work and communicates progress