using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Threading.Tasks;
using?System.Windows.Forms;
using?System.Net;
using?System.Net.Sockets;
using?System.IO;
using?System.Threading;
using?System.Security.Cryptography;
using?Client;
namespace?Myclient
{
????public?partial?class?Client?:?Form
????{
????????Socket?socketsend;//發送消息的socket
????????IPAddress?ip;//ip
????????int?port;//端口
????????static?Socket?client;//UDP
????????private?RSACryptoServiceProvider?rsa;
????????private?byte[]?SAIV;//密鑰
????????private?string?SAKey;//密鑰
????????public?Client（）
????????{
????????????InitializeComponent（）;
????????????tcpradioButton.Checked?=?true;
????????}

????????private?void?Form1_Load（object?sender?EventArgs?e）
????????{
????????????Control.CheckForIllegalCrossThreadCalls?=?false;//取消跨線程檢查，避免界面假死

????????}

????????private?void?okbutton_Click（object?sender?EventArgs?e）
????????{
????????????//連接服務器
????????????//TCP通訊
????????????if?（tcpradioButton.Checked）
????????????{
????????????????try
????????????????{
????????????????????ip?=?IPAddress.Parse（iptextBox.Text.Trim（））;
????????????????????port?=?Convert.ToInt32（porttextBox.Text）;
????????????????????socketsend?=?new?Socket（AddressFamily.InterNetwork?SocketType.Stream?ProtocolType.Tcp）;
????????????????????IPEndPoint?point?=?new?IPEndPoint（ip?port）;
????????????????????socketsend.Connect（point）;
????????????????????ShowMsg（“連接成功！“）;
????????????????????sendPublicKey（）;//發送客戶端的加密密鑰
????????????????????getSymmetricKey（）;//獲取服務器的加密密鑰
????????????????????Thread?th?=?new?Thread（AcceptMessage）;
????????????????????th.IsBackground?=?true;
????????????????????th.Start（）;
????????????????}
????????????????catch
????????????????{?}
????????????}
????????????//UDP通訊
????????????else
????????????{
????????????????client?=?new?Socket（AddressFamily.InterNetwork?SocketType.Dgram?ProtocolType.Udp）;
????????????????client.Bind（new?IPEndPoint（IPAddress.Parse（“127.0.0.1“）?6000））;
????????????????Thread?t2?=?new?Thread（ReciveMsg）;
????????????????t2.Start（）;
????????????????ShowMsg（“連接成功！“）;
????????????}????????????
????????}
????????///?

????????///?向特定ip的主機的端口發送數據報
????????///?

?????????void?sendMsg（）
????????{
????????????EndPoint?point?=?new?IPEndPoint（IPAddress.Parse（“127.0.0.1“）?6001）;
????????????string?msg?=textBox2.Text.Trim（）;
????????????client.SendTo（Encoding.UTF8.GetBytes（msg）?point）;

????????}

????????///?

????????///?接收發送給本機ip對應端口號的數據報
????????///?

?????????void?ReciveMsg（）
????????{
????????????while?（true）
????????????{
????????????????EndPoint?point?=?new?IPEndPoint（IPAddress.Any?0）;//用來保存發送方的ip和端口號
????????????????byte[]?buffer?=?new?byte[1024];
????????????????int?length?=?client.ReceiveFrom（buffer?ref?point）;//接收數據報
????????????????string?m

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-10-26?20:34??MyServer?and?Myclient\
?????目錄???????????0??2018-01-08?14:36??MyServer?and?Myclient\Myclient\
?????文件?????????187??2016-10-22?17:29??MyServer?and?Myclient\Myclient\App.config
?????目錄???????????0??2016-10-24?16:51??MyServer?and?Myclient\Myclient\bin\
?????目錄???????????0??2018-01-08?15:01??MyServer?and?Myclient\Myclient\bin\Debug\
?????文件???????15360??2018-01-08?16:22??MyServer?and?Myclient\Myclient\bin\Debug\Myclient.exe
?????文件?????????187??2016-10-22?17:29??MyServer?and?Myclient\Myclient\bin\Debug\Myclient.exe.config
?????文件???????38400??2018-01-08?16:22??MyServer?and?Myclient\Myclient\bin\Debug\Myclient.pdb
?????文件???????22472??2018-01-08?17:29??MyServer?and?Myclient\Myclient\bin\Debug\Myclient.vshost.exe
?????文件?????????187??2016-10-22?17:29??MyServer?and?Myclient\Myclient\bin\Debug\Myclient.vshost.exe.config
?????目錄???????????0??2016-10-24?16:51??MyServer?and?Myclient\Myclient\bin\Release\
?????文件????????7985??2018-01-08?16:22??MyServer?and?Myclient\Myclient\Client.cs
?????文件????????8842??2018-01-08?15:17??MyServer?and?Myclient\Myclient\Client.Designer.cs
?????文件????????5817??2018-01-08?15:29??MyServer?and?Myclient\Myclient\Client.resx
?????文件????????5236??2018-01-08?14:43??MyServer?and?Myclient\Myclient\Myclient.csproj
?????文件?????????452??2016-10-24?16:42??MyServer?and?Myclient\Myclient\Myclient.csproj.user
?????目錄???????????0??2016-10-22?17:29??MyServer?and?Myclient\Myclient\obj\
?????目錄???????????0??2018-01-08?16:22??MyServer?and?Myclient\Myclient\obj\Debug\
?????文件????????1451??2018-01-08?14:15??MyServer?and?Myclient\Myclient\obj\Debug\DesignTimeResolveAssemblyReferences.cache
?????文件????????7028??2018-01-08?14:36??MyServer?and?Myclient\Myclient\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????文件?????????180??2018-01-08?15:42??MyServer?and?Myclient\Myclient\obj\Debug\Myclient.Client.resources
?????文件????????1674??2018-01-08?17:29??MyServer?and?Myclient\Myclient\obj\Debug\Myclient.csproj.FileListAbsolute.txt
?????文件?????????976??2018-01-08?15:42??MyServer?and?Myclient\Myclient\obj\Debug\Myclient.csproj.GenerateResource.Cache
?????文件????????2209??2018-01-08?15:01??MyServer?and?Myclient\Myclient\obj\Debug\Myclient.csprojResolveAssemblyReference.cache
?????文件???????15360??2018-01-08?16:22??MyServer?and?Myclient\Myclient\obj\Debug\Myclient.exe
?????文件???????38400??2018-01-08?16:22??MyServer?and?Myclient\Myclient\obj\Debug\Myclient.pdb
?????文件?????????180??2018-01-08?15:01??MyServer?and?Myclient\Myclient\obj\Debug\Myclient.Properties.Resources.resources
?????文件???????????0??2016-10-22?17:29??MyServer?and?Myclient\Myclient\obj\Debug\TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs
?????文件???????????0??2016-10-22?17:29??MyServer?and?Myclient\Myclient\obj\Debug\TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs
?????文件???????????0??2016-10-22?17:29??MyServer?and?Myclient\Myclient\obj\Debug\TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs
?????目錄???????????0??2016-10-22?17:29??MyServer?and?Myclient\Myclient\obj\Debug\TempPE\
............此處省略48個文件信息