client-server

问题 I'm having a problem with a weird error from boost::asio. I am implementing half of a TFTP server (server->client only). I get the first RRQ packet on port 69 on the first socket and then create another socket to carry out the DATA,ACK exchange. I start an async_receive() on that socket and then do a send() of the first packet of data. I then get the handler callback for the receive (I assume the ACK coming in) and it gives the error "No connection could be made because the target machine

问题 I am wondering what is the best design approach between using a big state (store) and sql request in database. Let's say you have a Todo CRUD application. You can save the Todos list in store within Redux implementation. What is the best approach if you want to make complex statistics on those TODOs: Reducers or sql requests? For example, you want to get all todos for the current month: Reducers/store approach You can get all the todos list from the store and filter todos by date to get all

问题 The problem is that my server is written in the old Framework, so I can not use SocketStream there, I use System.Net.Sockets.TcpClient instead. The Client is written in the new framework, where TcpClient and the whole System.Net.Sockets are not supported. In the new framework we have Windows.Networking.Sockets. The exact question is: How to send data from the Client to the Server? Here is what happens when the user clicks on Send button: var writer = new DataWriter(socket.OutputStream);

问题 I need to execute powershell script on remote computer with admin privilegies. I have 2 scripts: client and server. When i start client.ps1 i invoke command on server machine but get access error. I get no error if I use simple code in server.ps1 like write-host "hello". server.ps1: Get-service -ComputerName 'client' client.ps1: $ScriptBlockContent = { d:\server.ps1 } $remote=New-PSSession -ComputerName 'server' Invoke-Command $remote -ScriptBlock $ScriptBlockContent 回答1: Your problem is

问题 I've recieved a byte array from the server and I know that connects and sends perfectly. It's when I try and play the sound from the byte array. Here's what I have to play the sound. SourceDataLine speaker = null; try { DataLine.Info speakerInfo = new DataLine.Info(SourceDataLine.class, getAudioFormat(samplerate)); speaker = (SourceDataLine) AudioSystem.getLine(speakerInfo); } catch (LineUnavailableException e) { e.printStackTrace(); } int nBytesRead = 0; while (nBytesRead != -1) { if

问题 Do you know, if there is the possibility to check who is calling a method and to restrict whether they are allowed to execute it with Java Annotations? For example if you have a client and a server. There are several users, which have different roles and they login into the client. Then (the same client) with different users wants to call a getMethod on the server. Can I restrict, who is allowed to call this methos with Java Annotations? Like: @Role(role="AllowedRole") public ReturnType

问题 I have these like buttons in a JQuery/Django tutorial I wrote: <td id="toggle_color_like_cell_{{ color.id }}" class="td__toggle_color_like_button" data-color_id="{{ color.id }}"> {% include "color_liker/color_like_link__html_snippet.txt" %} </td> where color_like_link__html_snippet.txt is: <button class="button_{% if not color.is_favorited %}un{% endif %}liked" >{% if color.is_favorited %}Yes{% else %}No{% endif %}</button> The following JQuery-JavaScript is the AJAX call to toggle the like

问题 Alright so I've been looking into this for the past two days and I still feel like I'm getting nowhere. I recently started using the SPIFFS File System for Arduino development on an HUZZAH ESP8266 like the FSBrowser.ino example, and while it's been great in terms of separating code, as my code continues to grow it has not been great in terms of stability. Ever since I began adding more and more javascript, I began to have errors pop up for various files, whether it's my HTML/CSS/JS, and the

问题 I am trying to write a client-server system using Sockets in java, however I cannot seem to read data sent from the server to the client. Here is the code for the client: public class ClientSocket { Socket clientSocket = null; PrintWriter out = null; BufferedReader in = null; // establish a connection to All Care's server application through socket 4444 (adjust localhost to reflect the IP address that the server // is being run from) public ClientSocket() { try { clientSocket = new Socket(

问题 I need to separate our application into a light-weight gui application and a business logic application. This won't be a client/server setup as such, as the 'server' component will only have one client. The other limitation in the application is that it has only one entry/exit point. Therefore if we were to use RMI, it would only ever be on one function. All form data is already wrapped up into a string and passed through one transport area. Should I just use Java Sockets to enhance this