[英]Write a WebSocket server in C#
I write code like in this article . 我像本文一样编写代码。 My code: 我的代码:
static void Main()
{
TcpListener server = new TcpListener(IPAddress.Parse("127.0.0.1"), 8080);
server.Start();
Console.WriteLine("Server has started on 127.0.0.1:8080");
Console.WriteLine("Waiting for a connection...");
TcpClient client = server.AcceptTcpClient();
Console.Write("A client connected.");
NetworkStream stream = client.GetStream();
//enter to an infinite cycle to be able to handle every change in stream
while (true)
{
while (!stream.DataAvailable) ;
byte[] bytes = new byte[client.Available];
stream.Read(bytes, 0, bytes.Length);
//translate bytes of request to string
string request = Encoding.UTF8.GetString(bytes);
if (new Regex("^GET").IsMatch(request))
{
byte[] response = UTF8.GetBytes("HTTP/1.1 101 Switching Protocols" + Environment.NewLine
+ "Connection: Upgrade" + Environment.NewLine
+ "Upgrade: websocket" + Environment.NewLine
+ "Sec-WebSocket-Accept: " + Convert.ToBase64String(
SHA1.Create().ComputeHash(
Encoding.UTF8.GetBytes(
new Regex("Sec-WebSocket-Key: (.*)").Match(request).Groups[1].Value.Trim() + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
)
)
) + Environment.NewLine + Environment.NewLine);
stream.Write(response, 0, response.Length);
}
else
{
byte[] response = UTF8.GetBytes("Data received");
response[0] = 0x81; // denotes this is the final message and it is in text
response[1] = (byte)(response.Length - 2); // payload size = message - header size
stream.Write(response, 0, response.Length);
}
}
}
I try debug to see it work, but it runs to the line 我尝试调试以查看它是否有效,但它会运行到该行
TcpClient client = server.AcceptTcpClient();
and stops. 并停止。 It shows Waiting for a connection...
and stops. 它显示Waiting for a connection...
并停止。
As #Blorgbeard mentioned should have client as well, you can check this code https://github.com/sta/websocket-sharp 由于#Blorgbeard提到也应该有客户端,你可以检查这段代码https://github.com/sta/websocket-sharp
Or Simple code like this: 或者像这样的简单代码:
var tcpclnt = new TcpClient();
Console.WriteLine("Connecting.....");
tcpclnt.Connect(IPAddress.Parse("127.0.0.1"), 8080);
// use the ipaddress as in the server program
Console.WriteLine("Connected");
Console.Write("Enter the string to be transmitted : ");
String str = Console.ReadLine();
Stream stm = tcpclnt.GetStream();
ASCIIEncoding asen = new ASCIIEncoding();
byte[] ba = asen.GetBytes(str);
Console.WriteLine("Transmitting.....");
stm.Write(ba, 0, ba.Length);
byte[] bb = new byte[100];
int k = stm.Read(bb, 0, 100);
for (int i = 0; i < k; i++)
Console.Write(Convert.ToChar(bb[i]));
tcpclnt.Close();
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