简单的 TCP 聊天应用程序 c#
Simple TCP chat application c#
我尝试制作局域网聊天应用程序,使用 C# 中的 Send() 和 Receive() 函数来发送和接收消息。但问题是,当用户在控制台中输入消息并按 Enter 键盘时,在 WriteLine 我的表单出现之前,此内容突然出现在控制台屏幕中(例如:我期望的是 You: hello)
如何删除行 "hello"。我期待的是:
客户:嗨
你:你好
服务器代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Net.Sockets;
namespace SimpleTcpSrvr
{
class Program
{
static void Main(string[] args)
{
Console.OutputEncoding = Encoding.UTF8;
int recv;
byte[] data = new byte[1024];
IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("127.0.0.1"),9050);
Socket newsock = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
newsock.Bind(ipep);
newsock.Listen(10);
Console.WriteLine("Waiting for a client...");
Socket client = newsock.Accept();
IPEndPoint clientep = (IPEndPoint)client.RemoteEndPoint;
Console.WriteLine("Connected with {0} at port {1}",clientep.Address,clientep.Port);
string welcome = "Welcome to my test server";
data = Encoding.UTF8.GetBytes(welcome);
client.Send(data,data.Length,SocketFlags.None);
string input;
while (true)
{
data = new byte[1024];
recv = client.Receive(data);
if (recv == 0)
break;
Console.WriteLine("Client: "+Encoding.UTF8.GetString(data, 0, recv));
input = Console.ReadLine();
Console.WriteLine("You: " + input);
client.Send(Encoding.UTF8.GetBytes(input));
}
Console.WriteLine("Disconnected from {0}", clientep.Address);
client.Close();
newsock.Close();
Console.ReadLine();
}
}
}
客户代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Net.Sockets;
namespace SimpleTcpClient
{
class Program
{
static void Main(string[] args)
{
Console.OutputEncoding = Encoding.UTF8;
byte[] data = new byte[1024];
string input, stringData;
IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("127.0.0.1"),9050);
Socket server = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
try
{
server.Connect(ipep);
}
catch(SocketException e)
{
Console.WriteLine("Unable to connect to server.");
Console.WriteLine(e.ToString());
return;
}
int recv = server.Receive(data);
stringData = Encoding.UTF8.GetString(data, 0, recv);
Console.WriteLine(stringData);
while (true)
{
input = Console.ReadLine();
if (input == "exit")
break;
Console.WriteLine("You: " + input);
server.Send(Encoding.UTF8.GetBytes(input));
data = new byte[1024];
recv = server.Receive(data);
stringData = Encoding.UTF8.GetString(data, 0, recv);
byte[] utf8string = System.Text.Encoding.UTF8.GetBytes(stringData);
Console.WriteLine("Server: "+stringData);
}
Console.WriteLine("Disconnecting from server...");
server.Shutdown(SocketShutdown.Both);
server.Close();
Console.WriteLine("Disconnected!");
Console.ReadLine();
}
}
}
谢谢大家!
您可以试试这个,在 ReadLine 之后将光标位置设置回上一行的开头,然后用您的文本覆盖该行 - 在您的情况下,因为您在 "You: " 之前,您的输出字符串将是比输入字符串长 - 如果它更小,您可以用空格覆盖以清除任何多余的字符。
input = Console.ReadLine();
Console.SetCursorPosition(0, Console.CursorTop-1);
Console.WriteLine("You: " + input);
我尝试制作局域网聊天应用程序,使用 C# 中的 Send() 和 Receive() 函数来发送和接收消息。但问题是,当用户在控制台中输入消息并按 Enter 键盘时,在 WriteLine 我的表单出现之前,此内容突然出现在控制台屏幕中(例如:我期望的是 You: hello)
如何删除行 "hello"。我期待的是:
客户:嗨
你:你好
服务器代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Net.Sockets;
namespace SimpleTcpSrvr
{
class Program
{
static void Main(string[] args)
{
Console.OutputEncoding = Encoding.UTF8;
int recv;
byte[] data = new byte[1024];
IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("127.0.0.1"),9050);
Socket newsock = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
newsock.Bind(ipep);
newsock.Listen(10);
Console.WriteLine("Waiting for a client...");
Socket client = newsock.Accept();
IPEndPoint clientep = (IPEndPoint)client.RemoteEndPoint;
Console.WriteLine("Connected with {0} at port {1}",clientep.Address,clientep.Port);
string welcome = "Welcome to my test server";
data = Encoding.UTF8.GetBytes(welcome);
client.Send(data,data.Length,SocketFlags.None);
string input;
while (true)
{
data = new byte[1024];
recv = client.Receive(data);
if (recv == 0)
break;
Console.WriteLine("Client: "+Encoding.UTF8.GetString(data, 0, recv));
input = Console.ReadLine();
Console.WriteLine("You: " + input);
client.Send(Encoding.UTF8.GetBytes(input));
}
Console.WriteLine("Disconnected from {0}", clientep.Address);
client.Close();
newsock.Close();
Console.ReadLine();
}
}
}
客户代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Net.Sockets;
namespace SimpleTcpClient
{
class Program
{
static void Main(string[] args)
{
Console.OutputEncoding = Encoding.UTF8;
byte[] data = new byte[1024];
string input, stringData;
IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("127.0.0.1"),9050);
Socket server = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
try
{
server.Connect(ipep);
}
catch(SocketException e)
{
Console.WriteLine("Unable to connect to server.");
Console.WriteLine(e.ToString());
return;
}
int recv = server.Receive(data);
stringData = Encoding.UTF8.GetString(data, 0, recv);
Console.WriteLine(stringData);
while (true)
{
input = Console.ReadLine();
if (input == "exit")
break;
Console.WriteLine("You: " + input);
server.Send(Encoding.UTF8.GetBytes(input));
data = new byte[1024];
recv = server.Receive(data);
stringData = Encoding.UTF8.GetString(data, 0, recv);
byte[] utf8string = System.Text.Encoding.UTF8.GetBytes(stringData);
Console.WriteLine("Server: "+stringData);
}
Console.WriteLine("Disconnecting from server...");
server.Shutdown(SocketShutdown.Both);
server.Close();
Console.WriteLine("Disconnected!");
Console.ReadLine();
}
}
}
谢谢大家!
您可以试试这个,在 ReadLine 之后将光标位置设置回上一行的开头,然后用您的文本覆盖该行 - 在您的情况下,因为您在 "You: " 之前,您的输出字符串将是比输入字符串长 - 如果它更小,您可以用空格覆盖以清除任何多余的字符。
input = Console.ReadLine();
Console.SetCursorPosition(0, Console.CursorTop-1);
Console.WriteLine("You: " + input);