How to send data from client to server

How to send data from client to server

By : pulyaevsky
Date : November 17 2020, 11:52 AM
I hope this helps you . The HTTP_Download PEAR package seems to be what you are looking for:
code :

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Download external html content client side, send to django server, send processed data back to client

Download external html content client side, send to django server, send processed data back to client

By : Test Lab
Date : March 29 2020, 07:55 AM
help you fix your problem Why not make that all bit shorter:
1) Visitor clicks on button on webpage and your webpage sends address of html page to your django server.
Android send data from client, retrieve by server and send again to client

Android send data from client, retrieve by server and send again to client

By : user6
Date : March 29 2020, 07:55 AM
it fixes the issue After chatting on Google Plus, the root cause was due to the tutorial you are using with JSONParser. The JSONParser seems like a third party API, yucky...
You are getting back an Array from your server instead of an Object which caused the problem. Here is the implementation code shared on Google Plus
code :
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(URL);

try {

    // Building Parameters
    List<NameValuePair> params1 = new ArrayList<NameValuePair>();
    params1.add(new BasicNameValuePair(TAG_VANCODE, "VAN-ABC"));

    // Set HTTPPOST with your parameters
    httppost.setEntity(new UrlEncodedFormEntity(params1));

    // Execute HTTP Post Request
    HttpResponse response = httpclient.execute(httppost);

    // Setup an InputStream to handle the response.
    InputStream ips  = response.getEntity().getContent();
    BufferedReader buf = new BufferedReader(new InputStreamReader(ips,"iso-8859-1"), 8);

    // Use a reader to read the data and store it in a String builder
    StringBuilder sb = new StringBuilder();
    String s;
    while(true) {
        s = buf.readLine();
        if(s==null || s.length()==0)

    System.out.println("I AM HERE TESTING OUTPUT - " + sb.toString());

    // Take the JSON and create an array
    // sb.string should look like this
    JSONArray jr = new JSONArray(sb.toString());

    for(int i = 0; i<jr.length(); i++) {
        JSONObject jo = jr.getJSONObject(i);
        System.out.println("Document Number " + jo.getString("doccumentnumber"));
        System.out.println("Item Code: " + jo.getString("itemcode"));

} catch (ClientProtocolException e) {
} catch (IOException e) {
} catch (Exception e) {
How can socket Server catch data from client just in the moment when client send it?

How can socket Server catch data from client just in the moment when client send it?

By : Carlita Johnson-Lee
Date : March 29 2020, 07:55 AM
it should still fix some issue When java program sends data to hardware, at that time, java program is the client and hardware is the server.
When the hardware sends data to java program, the hardware is the client and your java program is the server.
How to send Data to the client with out client requesting the ws server in nodejs

How to send Data to the client with out client requesting the ws server in nodejs

By : Yasir
Date : March 29 2020, 07:55 AM
it fixes the issue Right now you are creating a new read stream and adding a listener to the converter on every new connection, that will cause trouble once you have more than one client (same event emitted multiple times, etc..). Instead of that you should keep just one reader and notify all open connections when there's a new record.
Also notice that the library you are using only accepts UTF-8 strings or binary type messages, row objects sent the way you're sending them now will be received as a "[object Object]" string after toString() is called on them. You should probably send just send the row string or use JSON.stringify / JSON.parse.
code :
var http            = require("http");
var tailStream      = require("tail-stream");
var Converter       = require("csvtojson").Converter;
var WebSocketServer = require("websocket").server;

var server    = http.createServer();
var wsServer  = new WebSocketServer({ httpServer: server });
var converter = new Converter({constructResult:false});
var logStream = tailStream.createReadStream("log.csv", { detectTruncate : false });

var connections = [];


converter.on("record_parsed", function (jsonObj) {


wsServer.on("request", function(request) {

   var connection = request.accept(null, request.origin);

   connection.on("close", function() {
        connections.splice(connections.indexOf(connection), 1);

var socket = new WebSocket('ws://localhost:1337/');

socket.onmessage = function (event) {
Send UDP data from client (Unity) and send data back to same client from server

Send UDP data from client (Unity) and send data back to same client from server

By : Eugenia Acuña
Date : March 29 2020, 07:55 AM
hope this fix your issue I am making a game in Unity and i'm trying to send data from client to server and back to the client (trying to save the instances), but when i receive data and try to send data back to the client it says the udp client is not connected. , You should call the c.EndReceive(...) only ones:
code :
public void ReceiveUdpCallback(IAsyncResult ar)
    UdpClient c = (UdpClient)ar.AsyncState;
    IPEndPoint receivedIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
    Byte[] receivedBytes1 = c.EndReceive(ar, ref receivedIpEndPoint);   // <----------------
    Debug.Log("coming in receiveudpcallback!: " + receivedBytes1);
    Dictionary<string, string> values = new Dictionary<string, string>();

    Byte[] receivedBytes;
        receivedBytes = c.EndReceive(ar, ref receivedIpEndPoint);       // <----------------
    catch (Exception e)

    if (receivedBytes != null)
        //byte[] dataBuffer = new byte[receivedBytesInt];
        // Array.Copy(_buffer, dataBuffer, receivedBytesInt);
        string textReceived = Encoding.ASCII.GetString(receivedBytes);
        Dictionary<string, string> data = GetDicValues(textReceived);

        HandleInputMessage(c, data);
    udpClient.BeginReceive(ReceiveUdpCallback, ar.AsyncState);

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