将 UDP 数据从 Windows 服务发送到同一台机器上的浏览器 运行 网页
Send UDP data from Windows Service to browser running webpage on same machine
假设我在 Windows 服务上有以下代码 运行。
我必须将数据从机器上的 Windows 服务发送到在同一台机器上打开的网页(但未托管在该机器上)。
static void Main(string[] args)
{
Int32 counter = 0;
while (counter < 100)
{
SendUDP("127.0.0.1", 49320, counter.ToString(), counter.ToString().Length);
Thread.Sleep(2000);
counter++;
}
}
public static void SendUDP(string hostNameOrAddress, int destinationPort, string data, int count)
{
IPAddress destination = Dns.GetHostAddresses(hostNameOrAddress)[0];
IPEndPoint endPoint = new IPEndPoint(destination, destinationPort);
byte[] buffer = Encoding.ASCII.GetBytes(data);
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
for (int i = 0; i < count; i++)
{
socket.SendTo(buffer, endPoint);
}
socket.Close();
System.Console.WriteLine("Sent: " + data);
}
我必须监听发送到端口 49320 的数据,然后在浏览器中处理它。
我可以在网页上使用 Node.js 创建监听器,如下所示,但我必须单独启动此服务并在客户端上安装 node.js。
有什么替代方案吗? 更轻量级的东西?
我还可以创建一个 AJAX 来每 2 秒查询一次 Web 服务,这与 Windows 服务做同样的事情,但似乎很多查询一直在无意义地发送.
//websocket gateway on 8070
var app = require('http').createServer(handler)
, io = require('socket.io').listen(app)
, fs = require('fs');
var mysocket = 0;
app.listen(8070);
function handler (req, res) {
fs.readFile(__dirname + '/index.html',
function (err, data) {
if (err) {
res.writeHead(500);
return res.end('Error loading index.html');
}
res.writeHead(200);
res.end(data);
});
}
io.sockets.on('connection', function (socket) {
console.log('index.html connected');
mysocket = socket;
});
//udp server on 49320
var dgram = require("dgram");
var server = dgram.createSocket("udp4");
server.on("message", function (msg, rinfo) {
console.log("msg: " + msg);
if (mysocket != 0) {
mysocket.emit('field', "" + msg);
mysocket.broadcast.emit('field', "" + msg);
}
});
server.on("listening", function () {
var address = server.address();
console.log("udp server listening " + address.address + ":" + address.port);
});
server.bind(49320);
使用 Signal R。这是一种自动协商将事件从服务器推送到浏览器的最有效传输的技术(例如 Forever Frames、Web Sockets)- 它将回退到您在您的文档中提到的轮询方法如果需要,请提问。我认为这是使用原始 UDP 的更好方法,因为所有低级工作都已为您完成。
下面是使用 windows 服务中的 Signal R 的示例:
https://code.msdn.microsoft.com/windowsapps/SignalR-self-hosted-in-6ff7e6c3
来自该示例 - 这是使用 OWIN 自托管(无 IIS)的 SignalR 的更简化示例:
using System;
using Microsoft.AspNet.SignalR;
using Microsoft.Owin.Cors;
using Microsoft.Owin.Hosting;
using Owin;
namespace SignalRWindowsService
{
static class Program
{
static void Main()
{
string url = "http://localhost:8080";
WebApp.Start(url);
Console.WriteLine("Press any key to exit");
Console.ReadKey();
}
}
class Startup
{
public void Configuration(IAppBuilder app)
{
//This means you can access the web sockets from the local service (on a different URL) than the domain the page in the browser was served up from.
app.UseCors(CorsOptions.AllowAll);
app.MapSignalR();
}
}
public class MyHub : Hub
{
public void Send(string name, string message)
{
Clients.All.addMessage(name, message);
}
}
}
您需要以下 NUGET 包:
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="Microsoft.AspNet.Cors" version="5.0.0" targetFramework="net45" />
<package id="Microsoft.AspNet.SignalR.Core" version="2.0.3" targetFramework="net45" />
<package id="Microsoft.AspNet.SignalR.SelfHost" version="2.0.3" targetFramework="net45" />
<package id="Microsoft.Owin" version="2.1.0" targetFramework="net45" />
<package id="Microsoft.Owin.Cors" version="2.1.0" targetFramework="net45" />
<package id="Microsoft.Owin.Diagnostics" version="2.0.1" targetFramework="net45" />
<package id="Microsoft.Owin.Host.HttpListener" version="2.0.1" targetFramework="net45" />
<package id="Microsoft.Owin.Hosting" version="2.0.1" targetFramework="net45" />
<package id="Microsoft.Owin.Security" version="2.0.1" targetFramework="net45" />
<package id="Microsoft.Owin.SelfHost" version="2.0.1" targetFramework="net45" />
<package id="Newtonsoft.Json" version="5.0.1" targetFramework="net45" />
<package id="Owin" version="1.0" targetFramework="net45" />
</packages>
假设我在 Windows 服务上有以下代码 运行。 我必须将数据从机器上的 Windows 服务发送到在同一台机器上打开的网页(但未托管在该机器上)。
static void Main(string[] args)
{
Int32 counter = 0;
while (counter < 100)
{
SendUDP("127.0.0.1", 49320, counter.ToString(), counter.ToString().Length);
Thread.Sleep(2000);
counter++;
}
}
public static void SendUDP(string hostNameOrAddress, int destinationPort, string data, int count)
{
IPAddress destination = Dns.GetHostAddresses(hostNameOrAddress)[0];
IPEndPoint endPoint = new IPEndPoint(destination, destinationPort);
byte[] buffer = Encoding.ASCII.GetBytes(data);
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
for (int i = 0; i < count; i++)
{
socket.SendTo(buffer, endPoint);
}
socket.Close();
System.Console.WriteLine("Sent: " + data);
}
我必须监听发送到端口 49320 的数据,然后在浏览器中处理它。
我可以在网页上使用 Node.js 创建监听器,如下所示,但我必须单独启动此服务并在客户端上安装 node.js。
有什么替代方案吗? 更轻量级的东西?
我还可以创建一个 AJAX 来每 2 秒查询一次 Web 服务,这与 Windows 服务做同样的事情,但似乎很多查询一直在无意义地发送.
//websocket gateway on 8070
var app = require('http').createServer(handler)
, io = require('socket.io').listen(app)
, fs = require('fs');
var mysocket = 0;
app.listen(8070);
function handler (req, res) {
fs.readFile(__dirname + '/index.html',
function (err, data) {
if (err) {
res.writeHead(500);
return res.end('Error loading index.html');
}
res.writeHead(200);
res.end(data);
});
}
io.sockets.on('connection', function (socket) {
console.log('index.html connected');
mysocket = socket;
});
//udp server on 49320
var dgram = require("dgram");
var server = dgram.createSocket("udp4");
server.on("message", function (msg, rinfo) {
console.log("msg: " + msg);
if (mysocket != 0) {
mysocket.emit('field', "" + msg);
mysocket.broadcast.emit('field', "" + msg);
}
});
server.on("listening", function () {
var address = server.address();
console.log("udp server listening " + address.address + ":" + address.port);
});
server.bind(49320);
使用 Signal R。这是一种自动协商将事件从服务器推送到浏览器的最有效传输的技术(例如 Forever Frames、Web Sockets)- 它将回退到您在您的文档中提到的轮询方法如果需要,请提问。我认为这是使用原始 UDP 的更好方法,因为所有低级工作都已为您完成。
下面是使用 windows 服务中的 Signal R 的示例: https://code.msdn.microsoft.com/windowsapps/SignalR-self-hosted-in-6ff7e6c3
来自该示例 - 这是使用 OWIN 自托管(无 IIS)的 SignalR 的更简化示例:
using System;
using Microsoft.AspNet.SignalR;
using Microsoft.Owin.Cors;
using Microsoft.Owin.Hosting;
using Owin;
namespace SignalRWindowsService
{
static class Program
{
static void Main()
{
string url = "http://localhost:8080";
WebApp.Start(url);
Console.WriteLine("Press any key to exit");
Console.ReadKey();
}
}
class Startup
{
public void Configuration(IAppBuilder app)
{
//This means you can access the web sockets from the local service (on a different URL) than the domain the page in the browser was served up from.
app.UseCors(CorsOptions.AllowAll);
app.MapSignalR();
}
}
public class MyHub : Hub
{
public void Send(string name, string message)
{
Clients.All.addMessage(name, message);
}
}
}
您需要以下 NUGET 包:
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="Microsoft.AspNet.Cors" version="5.0.0" targetFramework="net45" />
<package id="Microsoft.AspNet.SignalR.Core" version="2.0.3" targetFramework="net45" />
<package id="Microsoft.AspNet.SignalR.SelfHost" version="2.0.3" targetFramework="net45" />
<package id="Microsoft.Owin" version="2.1.0" targetFramework="net45" />
<package id="Microsoft.Owin.Cors" version="2.1.0" targetFramework="net45" />
<package id="Microsoft.Owin.Diagnostics" version="2.0.1" targetFramework="net45" />
<package id="Microsoft.Owin.Host.HttpListener" version="2.0.1" targetFramework="net45" />
<package id="Microsoft.Owin.Hosting" version="2.0.1" targetFramework="net45" />
<package id="Microsoft.Owin.Security" version="2.0.1" targetFramework="net45" />
<package id="Microsoft.Owin.SelfHost" version="2.0.1" targetFramework="net45" />
<package id="Newtonsoft.Json" version="5.0.1" targetFramework="net45" />
<package id="Owin" version="1.0" targetFramework="net45" />
</packages>