[C＃] 例如，在C＃中的插座
Dạo này đang học C# trên trường nên tiện thể viết mấy bài ghi nhớ 😉
计划 1: Nhập tạo 1 server và 1 client. Client gửi các thông tin gethostname, gethosttime, gethostdate đến server, server nhận và trả về tương ứng các giá trị tên, giờ, 天.
Chúng ta tạo 2 名为MyServer和MyClient的单独项目. 运行时，请记住按Ctrl + F5 (bỏ chế độ debug thì mới chạy được nhiều project). 在他的代码是相对的笔记，你应该设法跟踪.
using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
namespace MyServer
{
class Program
{
private const int BUFFER_SIZE = 1024;
private const int PORT_NUMBER = 7826;
static ASCIIEncoding encoding = new ASCIIEncoding();
public static void Main()
{
try
{
IPEndPoint iep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), PORT_NUMBER);
Console.WriteLine("dang cho client ket noi...");
// tao ra server
Socket server = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
// server lang nghe ket noi tu client
server.Bind(iep);
server.Listen(10);
Socket client = server.Accept();
Console.WriteLine("Chap nhan ket noi tu: " + client.RemoteEndPoint.ToString());
byte[] data = new byte[BUFFER_SIZE];
String result = "";
while (true)
{
// nhan du lieu tu client
int rec = client.Receive(data);
// chuyen ve string
string command = encoding.GetString(data, 0, rec);
Console.WriteLine("Client: " + command);
if (command.Equals("gethostname"))
{
// lay ten server
IPEndPoint endPoint = (IPEndPoint)client.RemoteEndPoint;
IPAddress ipAddress = endPoint.Address;
IPHostEntry hostEntry = Dns.GetHostEntry(ipAddress);
result = hostEntry.HostName;
}
else if (command.Equals("gethosttime"))
{
// lay thoi gian
result = DateTime.Now.ToString("h:mm:ss tt");
}
else if (command.Equals("gethostdate"))
{
// lay ngay
result= DateTime.Now.ToString("dd:MM:yyyy");
}
else if (command.Equals("quit"))
{
// dong
server.Close();
client.Close();
break;
}
else
{
result = "khong phai lenh dung";
}
// tra ve ket qua cho client
client.Send(encoding.GetBytes(result));
}
}
catch (Exception ex)
{
Console.WriteLine("Error: " + ex);
}
}
}
}
using System;
using System.IO;
using System.Net;
using System.Text;
using System.Net.Sockets;
namespace MyClient
{
class Program
{
private const int BUFFER_SIZE = 1024;
private const int PORT_NUMBER = 7826;
static ASCIIEncoding encoding = new ASCIIEncoding();
public static void Main()
{
try
{
// IPAddress address = IPAddress.Parse("127.0.0.1");
IPEndPoint iep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), PORT_NUMBER);
// tao ra client
Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
// client connect den cong
client.Connect(iep);
String command = "";
while (!command.Equals("quit"))
{
// cho nhap lenh
command = Console.ReadLine();
// gui lenh
client.Send(encoding.GetBytes(command));
byte[] data = new byte[BUFFER_SIZE];
int rec = client.Receive(data);
Console.WriteLine("server: " + encoding.GetString(data, 0, rec));
}
client.Close();
}
catch (Exception ex)
{
Console.WriteLine("Error: " + ex);
}
}
}
}
计划 2: 客户端发送 1 文件名的服务器上, 服务器会检查文件是否存在, 如果客户端存在，让Gamespot的, 否则该通知不存在客户端文件. (请注意，如果只有文件名，服务器将看在目录的bin /调试/)
using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.IO;
namespace MyServer
{
class Program
{
private const int BUFFER_SIZE = 1024;
private const int PORT_NUMBER = 7826;
static ASCIIEncoding encoding = new ASCIIEncoding();
public static void Main()
{
try
{
IPEndPoint iep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), PORT_NUMBER);
Console.WriteLine("dang cho client ket noi...");
// tao ra server
Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
// server lang nghe ket noi tu client
server.Bind(iep);
server.Listen(10);
Socket client = server.Accept();
Console.WriteLine("Chap nhan ket noi tu: " + client.RemoteEndPoint.ToString());
byte[] data = new byte[BUFFER_SIZE];
// lap vo han
while (true)
{
// nhan du lieu tu client
int rec = client.Receive(data);
// chuyen ve string
string fileName = encoding.GetString(data, 0, rec);
Console.WriteLine("Client: " + fileName);
// neu file ton tai
if (File.Exists(fileName))
{
// gui thong bao la co tim thay file
client.Send(encoding.GetBytes("yes"));
// gui file xuong client
byte[] fileData = File.ReadAllBytes(fileName);
byte[] fileNameByte = Encoding.ASCII.GetBytes(fileName);
byte[] servertData = new byte[4 + fileNameByte.Length + fileData.Length];
byte[] clientData = new byte[4 + fileNameByte.Length + fileData.Length];
byte[] fileNameLen = BitConverter.GetBytes(fileNameByte.Length);
fileNameLen.CopyTo(servertData, 0);
fileNameByte.CopyTo(servertData, 4);
fileData.CopyTo(servertData, 4 + fileNameByte.Length);
client.Send(servertData);
Console.WriteLine("Da gui file " + fileName + " den client!");
client.Close();
// thoat
break;
}
// khong tim thay file
else
{
// gui thong bao khong tim thay file
client.Send(encoding.GetBytes("no"));
Console.WriteLine("khong thay file");
}
}
}
catch (Exception ex)
{
Console.WriteLine("Error: " + ex);
}
}
}
}
using System;
using System.IO;
using System.Net;
using System.Text;
using System.Net.Sockets;
namespace MyClientSendFile
{
class Program
{
private const int BUFFER_SIZE = 1024;
private const int PORT_NUMBER = 7826;
static ASCIIEncoding encoding = new ASCIIEncoding();
public static void Main()
{
try
{
// IPAddress address = IPAddress.Parse("127.0.0.1");
IPEndPoint iep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), PORT_NUMBER);
// tao ra client
Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
// client connect den cong
client.Connect(iep);
// lap vo han
while (true)
{
// nhap file can tai xuong
Console.Write("Nhap file muon download: ");
String fileName = Console.ReadLine();
// gui ten file len server
client.Send(encoding.GetBytes(fileName));
// nhan thong bao co tim thay hay khong
byte[] data = new byte[BUFFER_SIZE];
int rec = client.Receive(data);
String check = encoding.GetString(data, 0, rec);
// neu tim thay thi thuc hien viec nhan file
if (check.Equals("yes"))
{
byte[] serverData = new byte[1024 * 5000];
int receivedBytesLen = client.Receive(serverData);
int fileNameLen = BitConverter.ToInt32(serverData, 0);
BinaryWriter bWrite = new BinaryWriter(File.Open(fileName, FileMode.Append));
bWrite.Write(serverData, 4 + fileNameLen, receivedBytesLen - 4 - fileNameLen);
Console.WriteLine("Da nhan file " + fileName + " tu server!");
bWrite.Close();
// thoat
break;
}
// neu khong tim thay thi bat nhap lai
else
{
Console.WriteLine("Server khong co file " + fileName);
}
}
client.Close();
}
catch (Exception ex)
{
Console.WriteLine("Error: " + ex);
}
}
}
}
欢迎, 你可以给自己询问有关网络编程越南教材, 或在线学习资源，其中?
谢谢了!
我只是独自谷歌这一个, 谷歌英文和满满的全是你啊
我问他放置在客户端发送IPE ip地址的客户端或服务器IP是如此?
服务器你NHE, 寻求连接到服务器，.
问问自己, ví dụ như sàn giao dịch tiền điện tử binance.com họ cho user viết tool để trade, cung cấp data real time, ra lệnh mua bán bằng APi. 请问能不能用C#写工具？, 软不软，需要使用其他软件或辅助工具吗？. 感谢!
我不知道这个.