我创建了一个使用 websocket 接受客户端的 Socket 服务器，我正在尝试提供聊天服务，但我遇到了两件事：
1.我能够将味精从浏览器发送到服务器，但反之则不行。
2.一旦我在控制台中写入并点击输入，连接已关闭，我收到断开连接的消息
这是我的代码：
服务器
using System;
using System.Net.Sockets;
using System.Net;
using System.Security.Cryptography;
using System.Threading;
using System.Text;
using System.IO;
namespace ConsoleApplication1
{
class Program
{
static Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
static private string guid = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
static void Main(string[] args)
{
serverSocket.Bind(new IPEndPoint(IPAddress.Any, 8080));
serverSocket.Listen(128);
serverSocket.BeginAccept(null, 0, OnAccept, null);
Console.ReadLine();
}
private static void OnAccept(IAsyncResult result)
{
byte[] buffer = new byte[1024];
try
{
Socket client = null;
string headerResponse = "";
if (serverSocket != null && serverSocket.IsBound)
{
client = serverSocket.EndAccept(result);
int i = client.Receive(buffer);
headerResponse = (System.Text.Encoding.UTF8.GetString(buffer)).Substring(0, i);
// write received data to the console
Console.WriteLine(headerResponse);
}
if (client != null)
{
//Console.WriteLine("Connected and waiting for a client msg");
/* Handshaking and managing ClientSocket */
var key = headerResponse.Replace("ey:", "`")
.Split('`')[1] // dGhlIHNhbXBsZSBub25jZQ== \r\n .......
.Replace("\r", "").Split('\n')[0] // dGhlIHNhbXBsZSBub25jZQ==
.Trim();
// key should now equal dGhlIHNhbXBsZSBub25jZQ==
var test1 = AcceptKey(ref key);
var newLine = "\r\n";
var response = "HTTP/1.1 101 Switching Protocols" + newLine
+ "Upgrade: websocket" + newLine
+ "Connection: Upgrade" + newLine
+ "Sec-WebSocket-Accept: " + test1 + newLine + newLine
//+ "Sec-WebSocket-Protocol: chat, superchat" + newLine
//+ "Sec-WebSocket-Version: 13" + newLine
;
client.Send(System.Text.Encoding.UTF8.GetBytes(response));
int received = ReceiveMsg(client);
// once the message is received decode it in different formats
Console.WriteLine(Convert.ToString(buffer).Substring(0, received));
Console.WriteLine("Type any word to send to the client");
Console.ReadLine();
int sent = client.Send(buffer, buffer.Length, SocketFlags.None);
Console.WriteLine("Sent {0} bytes.", sent); //the sent buffer is not displaying on browser
Console.ReadLine(); //here the connection is closed
}
}
catch (SocketException exception)
{
throw exception;
}
finally
{
if (serverSocket != null && serverSocket.IsBound)
{
serverSocket.BeginAccept(null, 0, OnAccept, null);
}
}
}
public static int ReceiveMsg(Socket server )
{
byte[] msg = Encoding.UTF8.GetBytes("This is a test");
byte[] bytes = new byte[256];
try
{
// Blocks until send returns.
int i = server.Send(msg);
Console.WriteLine("Sent {0} bytes.", i);
// Get reply from the server.
i = server.Receive(bytes);
ASCIIEncoding encoder = new ASCIIEncoding();
Console.WriteLine(encoder.GetString(bytes, 0, bytes.Length));
}
catch (SocketException e)
{
Console.WriteLine("{0} Error code: {1}.", e.Message, e.ErrorCode);
return (e.ErrorCode);
}
return 0;
}
public static T[] SubArray<T>(T[] data, int index, int length)
{
T[] result = new T[length];
Array.Copy(data, index, result, 0, length);
return result;
}
private static string AcceptKey(ref string key)
{
string longKey = key + guid;
byte[] hashBytes = ComputeHash(longKey);
return Convert.ToBase64String(hashBytes);
}
static SHA1 sha1 = SHA1CryptoServiceProvider.Create();
private static byte[] ComputeHash(string str)
{
return sha1.ComputeHash(System.Text.Encoding.ASCII.GetBytes(str));
}
}
}
客户
<!DOCTYPE HTML>
<html lang = "en">
<head>
<title>WebSocket Test</title>
<style type = "text/css">
h1 {
text-align: center;
}
.error {
color: red;
}
.response {
color: blue;
}
fieldset {
width: 80%;
margin: auto;
text-align: center;
-moz-box-shadow: 10px 10px 10px #000000;
-webkit-box-shadow: 10px 10px 10px #000000;
}
#output {
font-family: monospace;
width: 80%;
margin-left: auto;
margin-right: auto;
margin-top: 1em;
background-color: #eeeeee;
padding: 1em;
border: 5px groove #cccccc;
-moz-border-radius: 15px;
-webkit-border-radius: 15px;
-moz-box-shadow: 10px 10px 10px #000000;
-webkit-box-shadow: 10px 10px 10px #000000;
}
</style>
<script language="javascript" type="text/javascript">
var output;
var websocket;
function init() {
output = document.getElementById("output");
} // end init
function connect() {
//open socket
if ("WebSocket" in window) {
websocket = new WebSocket("ws://localhost:8080/server2");
//note this server does nothing but echo what was passed
//use a more elaborate server for more interesting behavior
output.innerHTML = "connecting...";
//attach event handlers
websocket.onopen = onOpen;
websocket.onclose = onClose;
websocket.onmessage = onMessage;
websocket.onerror = onError;
} else {
alert("WebSockets not supported on your browser.");
} // end if
} // end connect
function onOpen(evt) {
//called as soon as a connection is opened
output.innerHTML = "<p>CONNECTED TO SERVER</p>";
} // end onOpen
function onClose(evt) {
//called when connection is severed
output.innerHTML += "<p>DISCONNECTED</p>"+evt.data;
} // end onClose;
function onMessage(evt) {
//called on receipt of message
alert("msg received");
output.innerHTML += "<p class = 'response'>RESPONSE: "
+ evt.data + "</p>";
} // end onMessage
function onError(evt) {
//called on error
output.innerHTML += "<p class = 'error'>ERROR: "
+ evt.data + "</p>";
} // end onError
function sendMessage() {
//get message from text field
txtMessage = document.getElementById("txtMessage");
message = txtMessage.value;
//pass message to server
websocket.send(message);
output.innerHTML += "<p>MESSAGE SENT: " + message + "</p>";
} // end sendMessage
</script>
</head>
<body onload = "init()">
<h1>Web Socket Echo Chamber</h1>
<form action = "">
<fieldset>
<button type = "button" onclick = "connect()">connect to server</button>
<label for = "txtMessage">
<input type = "text" id = "txtMessage" value = "HTML5 Quick Reference For Dummies" />
</label>
<button type = "button" onclick = "sendMessage()">send message</button>
<button type = "button" onclick = "websocket.close()">disconnect</button>
</fieldset>
</form>
<div id="output">Click 'connect' button to connect</div>
</body>
</html>
任何想法 ？？