diff --git a/App.config b/App.config
new file mode 100644
index 0000000..b50c74f
--- /dev/null
+++ b/App.config
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Program.cs b/Program.cs
new file mode 100644
index 0000000..6d9eb55
--- /dev/null
+++ b/Program.cs
@@ -0,0 +1,169 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SocketSingleSend
+{
+ class Program
+ {
+ private const string ANSWER_FLAG = ">>OK<<";
+ private const int MAX_BYTE_SIZE = 256;
+ static readonly IPAddress localIP = Dns.GetHostByName(Dns.GetHostName()).AddressList[0];
+ static readonly int PORT = 10019;
+ static readonly int AS_PORT = 11019;
+
+ static Socket udpSender;
+ static Socket udpReceiver;
+
+ static void Main(string[] args)
+ {
+ Console.WriteLine("1: Send ;\r\n2: Receive ;");
+ Console.WriteLine("Make a choice to do:");
+
+ string choice = Console.ReadLine();
+ if (choice == "1")
+ {
+ //do Send
+ IPAddress targetIP = null;
+ bool flag = false;
+ while (!flag)
+ {
+ Console.WriteLine("Enter the other side's IP:");
+ try
+ {
+ targetIP = IPAddress.Parse(Console.ReadLine());
+ flag = true;
+ }
+ catch (Exception ex)
+ {
+ Console.WriteLine(ex.Message);
+ }
+ }
+ Console.WriteLine("Write down your text:");
+ Console.WriteLine("-----------------------------------");
+ string str = null;
+ do
+ {
+ str = Console.ReadLine();
+ if (str.Length > (MAX_BYTE_SIZE / 2 - 2))
+ {
+ Console.WriteLine("<<<<<<<<<< 0)
+ {
+ count--;
+ if (UDPSend(ANSWER_FLAG, answerIPE))
+ break;
+ }
+ }
+ return receiveStr;
+ }
+
+ static bool SendText(string str, IPAddress targetIP)
+ {
+ IPEndPoint targetIPE = new IPEndPoint(targetIP, PORT);
+ IPEndPoint answerIPE = new IPEndPoint(localIP, AS_PORT);
+ IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
+ EndPoint remoteIPE = sender;
+ //UDP Mode
+ if (UDPSend(str, targetIPE))
+ {
+ //Receive answer
+ if (UDPReceive(answerIPE, ref remoteIPE, false) == ANSWER_FLAG)
+ return true;
+ }
+ return false;
+ }
+
+ static bool UDPSend(string str, EndPoint targetIPE)
+ {
+ if (udpSender == null)
+ {
+ udpSender = new Socket(AddressFamily.InterNetwork,
+ SocketType.Dgram, ProtocolType.Udp);
+ udpSender.SendTimeout = 800;
+ }
+
+ try
+ {
+ byte[] strByte = Encoding.UTF8.GetBytes(str);
+ int sendLen = udpSender.SendTo(strByte, SocketFlags.None, targetIPE);
+ if (sendLen == strByte.Length)
+ return true;
+ }
+ catch { }
+ return false;
+ }
+
+ static string UDPReceive(EndPoint listenIPE, ref EndPoint remoteIPE, bool blocked = true)
+ {
+ if (udpReceiver == null)
+ {
+ //Receive_Socket的首次创建导致错过Answer信号的接收-------提升Socket创建顺序
+ //answerReceive网络缓冲区的旧数据导致收到“假Answer”------添加Answer校对
+ udpReceiver = new Socket(AddressFamily.InterNetwork,
+ SocketType.Dgram, ProtocolType.Udp);
+ udpReceiver.Bind(listenIPE);
+ if (!blocked)
+ udpReceiver.ReceiveTimeout = 2500;
+ }
+
+ try
+ {
+ byte[] strByte = new byte[MAX_BYTE_SIZE];
+ int receiveLen = udpReceiver.ReceiveFrom(strByte,
+ SocketFlags.None, ref remoteIPE);
+ if (receiveLen > 0)
+ return Encoding.UTF8.GetString(strByte, 0, receiveLen);
+ }
+ catch { }
+ return null;
+ }
+
+ }
+}
diff --git a/Properties/AssemblyInfo.cs b/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000..e12067c
--- /dev/null
+++ b/Properties/AssemblyInfo.cs
@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// 有关程序集的一般信息由以下
+// 控制。更改这些特性值可修改
+// 与程序集关联的信息。
+[assembly: AssemblyTitle("SocketSingleSend")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("SocketSingleSend")]
+[assembly: AssemblyCopyright("Copyright © 2019")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// 将 ComVisible 设置为 false 会使此程序集中的类型
+//对 COM 组件不可见。如果需要从 COM 访问此程序集中的类型
+//请将此类型的 ComVisible 特性设置为 true。
+[assembly: ComVisible(false)]
+
+// 如果此项目向 COM 公开，则下列 GUID 用于类型库的 ID
+[assembly: Guid("10f1df60-2525-41d6-8d30-ce0c22c0332c")]
+
+// 程序集的版本信息由下列四个值组成:
+//
+// 主版本
+// 次版本
+// 生成号
+// 修订号
+//
+// 可以指定所有值，也可以使用以下所示的 "*" 预置版本号和修订号
+// 方法是按如下所示使用“*”: :
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/SocketSingleSend.csproj b/SocketSingleSend.csproj
new file mode 100644
index 0000000..7e68b36
--- /dev/null
+++ b/SocketSingleSend.csproj
@@ -0,0 +1,53 @@
+
+
+
+
+ Debug
+ AnyCPU
+ {10F1DF60-2525-41D6-8D30-CE0C22C0332C}
+ Exe
+ SocketSingleSend
+ SocketSingleSend
+ v4.6.2
+ 512
+ true
+ true
+
+
+ AnyCPU
+ true
+ full
+ false
+ bin\Debug\
+ DEBUG;TRACE
+ prompt
+ 4
+
+
+ AnyCPU
+ pdbonly
+ true
+ bin\Release\
+ TRACE
+ prompt
+ 4
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/SocketSingleSend.sln b/SocketSingleSend.sln
new file mode 100644
index 0000000..9468d3a
--- /dev/null
+++ b/SocketSingleSend.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28307.136
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SocketSingleSend", "SocketSingleSend.csproj", "{10F1DF60-2525-41D6-8D30-CE0C22C0332C}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Any CPU = Debug|Any CPU
+ Release|Any CPU = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {10F1DF60-2525-41D6-8D30-CE0C22C0332C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {10F1DF60-2525-41D6-8D30-CE0C22C0332C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {10F1DF60-2525-41D6-8D30-CE0C22C0332C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {10F1DF60-2525-41D6-8D30-CE0C22C0332C}.Release|Any CPU.Build.0 = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+ GlobalSection(ExtensibilityGlobals) = postSolution
+ SolutionGuid = {AEDFDC66-2A93-4E14-B270-5554BCE31708}
+ EndGlobalSection
+EndGlobal