[英]C# Tcp Server - HTML5 Websocket communication
我正在編寫C#Tcp Server和HTML5 Websocket Client。 但是,當從客戶端向服務器發送消息時,我在C#Tcp服務器上收到“ GET / HTTP / 1.1”消息。
C#服務器
using System;using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.IO;
namespace websocket
{
class Program
{
static void Main(string[] args)
{
TcpListener server = new TcpListener(IPAddress.Parse("127.0.0.2"), 500);
server.Start();
Console.WriteLine("Basladi");
Console.WriteLine("Bekliyor");
while (true)
{
TcpClient client = server.AcceptTcpClient();
Console.WriteLine("Baglandi");
NetworkStream asd = client.GetStream();
byte[] buffer = new byte[1024];
String mesaj = Encoding.ASCII.GetString(buffer, 0, asd.Read(buffer, 0, buffer.Length));
Console.WriteLine(mesaj);
}
server.Stop();
}
}
}
HTML5 Websocket客戶端
function WebSocketTest()
{
var ws = new WebSocket("ws://127.0.0.2:500");
ws.onopen = function()
{
ws.send("Message to send");
document.write("Message is sent...");
};
ws.onmessage = function (evt)
{
var received_msg = evt.data;
document.write("Message is received...");
};
ws.onclose = function()
{
document.write("Connection is closed...");
};
}
結果
GET / HTTP/1.1
Upgrade: websocket
Connection: Upgrade
Host: 127.0.0.2:500
Origin: null
Pragma: no-cache
Cache-Control: no-cache
Sec-WebSocket-Key: Nmh4m9EiHa9GFx8Ft5Z9bQ==
Sec-WebSocket-Version: 13
Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits, x-webkit-deflate-frame
User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.143 Safari/537.36
WebSocket不是普通的TCP套接字,而是HTTP連接中類似套接字的層。 您在此處看到的是客戶端的HTTP請求,以及將HTTP連接升級到WebSocket連接的請求。 如果您不想使用現有的WebSocket庫,則必須自己實現該協議,即首先實現最小的Web服務器(RFC2616),然后將WebSocket層置於頂層(RFC6455)。
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