c# websocketServer

代码：

https://github.com/AltairCA/.netcore2.0-websocketServerExample

查找安装：WebSocketSharp

解析包：这个可以：

/// <summary>
/// 解析客户端发送来的数据
/// </summary>
/// <returns>The data.</returns>
/// <param name="recBytes">Rec bytes.</param>
/// <param name="length">Length.</param>
private string AnalyzeClientData (byte[] recBytes, int length){
if (length < 2) {
return string.Empty;}bool fin = (recBytes [0] & 0x80) == 0x80; // 1bit，1表示最后一帧
if (!fin) {
return string.Empty;// 超过一帧暂不处理 }bool mask_flag = (recBytes [1] & 0x80) == 0x80; // 是否包含掩码
if (!mask_flag) {
return string.Empty;// 不包含掩码的暂不处理}int payload_len = recBytes [1] & 0x7F; // 数据长度  byte[] masks = new byte[4];
byte[] payload_data;if (payload_len == 126) {Array.Copy (recBytes, 4, masks, 0, 4);payload_len = (UInt16)(recBytes [2] << 8 | recBytes [3]);payload_data = new byte[payload_len];Array.Copy (recBytes, 8, payload_data, 0, payload_len);} else if (payload_len == 127) {Array.Copy (recBytes, 10, masks, 0, 4);
byte[] uInt64Bytes = new byte[8];
for (int i = 0; i < 8; i++) {uInt64Bytes [i] = recBytes [9 - i];}UInt64 len = BitConverter.ToUInt64 (uInt64Bytes, 0);payload_data = new byte[len];
for (UInt64 i = 0; i < len; i++) {payload_data [i] = recBytes [i + 14];}} else {Array.Copy (recBytes, 2, masks, 0, 4);payload_data = new byte[payload_len];Array.Copy (recBytes, 6, payload_data, 0, payload_len);}for (var i = 0; i < payload_len; i++) {payload_data [i] = (byte)(payload_data [i] ^ masks [i % 4]);}return Encoding.UTF8.GetString (payload_data);}

这个是不是也可以：

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using Newtonsoft.Json;
using WebSocketSharp;
using WebSocketSharp.Server;namespace PrintPlugin
{public partial class Form_Main : Form{public Form_Main(){InitializeComponent();}private void Form_Main_Load(object sender, EventArgs e){var wssv = new WebSocketServer(54321);wssv.AddWebSocketService<PrintServer>("/PrintServer");//添加服务侦听，第一个是类。第二个是调用的接口wssv.Start();Console.WriteLine("打印服务运行中...");// wssv.Stop();}class PrintServer : WebSocketBehavior{static Dictionary<string, string> dClientAll = new Dictionary<string, string>();protected override void OnOpen(){dClientAll.Add(base.Context.SecWebSocketKey, base.Context.UserEndPoint.ToString());Console.WriteLine("连接打开" + dClientAll[base.Context.SecWebSocketKey] + "|" + DateTime.Now.ToString());base.OnOpen();}protected override void OnMessage(MessageEventArgs e){var data = e.Data + "|" + DateTime.Now.ToString();Console.WriteLine("接收数据" + dClientAll[base.Context.SecWebSocketKey] + "|" + data);var retjson = JsonConvert.SerializeObject(new { code = 200, msg = data });Send(retjson);}protected override void OnClose(CloseEventArgs e){Console.WriteLine("连接关闭" + dClientAll[base.Context.SecWebSocketKey] + "|" + DateTime.Now.ToString());base.OnClose(e);}protected override void OnError(ErrorEventArgs e){Console.WriteLine("错误信息" + dClientAll[base.Context.SecWebSocketKey] + "|" + DateTime.Now.ToString());base.OnError(e);}}}
}

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