我尝试创建自己的客户端 - 服务器程序，我想要做的是客户端将连接到服务器并发送一个简单的字符串，服务器需要对这个字符串进行一些操作并用新的字符串响应客户端。
我发现这篇文章：http ://www.daniweb.com/software-development/csharp/threads/69900/socket-programming
它似乎工作正常，我可以向服务器发送一个字符串，但我怎样才能从服务器响应客户端？（我是一名新开发人员...）
Server:
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Security.Cryptography;
using ClassLibrary1;
public class serv
{
public static void Main()
{
//Establishing a connection with the client
IPAddress ipAd = IPAddress.Parse("10.0.0.182");
TcpListener newList = new TcpListener(ipAd, 7777);
/* Start Listeneting at the specified port */
newList.Start();
Console.WriteLine("The server is running at port 7777...");
Console.WriteLine("Waiting for a connection.....");
Socket s = newList.AcceptSocket();
Console.WriteLine("Connection accepted from " + s.RemoteEndPoint);
//Accepting the data from the client in byte form
byte[] b = new byte[100];
int k = s.Receive(b);
Console.WriteLine("Recieved...");
for (int i = 0; i < k; i++)
//displaying the data in characters
Console.Write(Convert.ToChar(b[i]));
//Displaying the data in bytes
Console.WriteLine("The byte data is");
for (int i = 0; i < k; i++)
Console.Write(b[i]);
//Sending acknowlegement to the client
ASCIIEncoding asen = new ASCIIEncoding();
s.Send(asen.GetBytes("The string was recieved by the server."));
Console.WriteLine("\nSent Acknowledgement");
//Accepting data using the network streams
NetworkStream nts = new NetworkStream(s);
StreamReader strea = new StreamReader(nts);
StreamWriter strwri = new StreamWriter(nts);
string output;
output = strea.ReadLine();
Console.WriteLine(output);
try
{
string output2;
//Copying the contents of the file
output2 = strea.ReadLine();
Console.WriteLine(output2);
string dest = ("C://Project//Copy//copy.txt");
File.Copy(output2, dest, true);
Console.WriteLine("The file has been copied to the new destination");
//Getting the contents of the copied file
Console.WriteLine();
Console.WriteLine("The contents of the Copied file are");
Console.WriteLine(File.ReadAllText("C://Project//Copy//copy.txt"));
//Encrypting a file
TripleDESCryptoServiceProvider cypto = new TripleDESCryptoServiceProvider();
FileStream filestream = File.Create("C://Project//Copy//secret.txt");
CryptoStream cryptoStream = new CryptoStream(filestream, cypto.CreateEncryptor(), CryptoStreamMode.Write);
StreamWriter write = new StreamWriter(cryptoStream);
write.WriteLine(File.ReadAllText("C://Project//Copy//copy.txt"));
write.Close();
filestream = File.Create("C://Project//Copy//secret.txt");
BinaryWriter binwrite = new BinaryWriter(filestream);
binwrite.Write(cypto.Key);
binwrite.Write(cypto.IV);
binwrite.Close();
Console.WriteLine();
Console.WriteLine("The data is encrypted and stored");
Console.Write("The encrypted data is : ");
Console.WriteLine(File.ReadAllText("C:\\Project\\Copy\\Secret.txt"));
}
catch (FileNotFoundException e)
{
Console.WriteLine(e);
}
s.Close();
}
}
Client:
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
using System.Net.Sockets;
public class clnt
{
public static void Main(string[] args)
{
try
{
//Establishing the connection
TcpClient tcpclnt = new TcpClient();
Console.WriteLine("Connecting.....");
tcpclnt.Connect("10.0.0.182", 7777);
Console.WriteLine("Connected");
//Transfering of data in the form of bytes
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]));
//Using the network stream to send data
NetworkStream nts = tcpclnt.GetStream();
StreamReader strread = new StreamReader(nts);
StreamWriter strwrite = new StreamWriter(nts);
//Sending a pre-stored text data
string str1 = "goodboy";
strwrite.WriteLine(str1);
strwrite.Flush();
//Transfering of the file name using the streams
Console.WriteLine("Enter the file path");
string str2 = Console.ReadLine();
strwrite.WriteLine(str2);
strwrite.Flush();
tcpclnt.Close();
}
catch (Exception e)
{
Console.WriteLine("Error..... " + e.StackTrace);
}
}
}