连接到另一个IP Windows窗体

本文介绍了连接到另一个IP Windows窗体的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

这有效：

this works:

string serverIP = "localhost"; string message = "Hello"; Connect(serverIP, message);

但是当我用一个我的ip地址字符串替换localhost部分时像：12.23.21.256，它告诉我： 由于目标机器主动拒绝它，因此无法建立连接。 在连接中我有： static void连接（字符串serverIP，字符串消息） { string output =; 尝试 { //创建一个TcpClient。 //客户端需要一个连接到服务器和端口 //组合所指定的同一地址的TcpServer //。 Int32 port = 13; TcpClient client = new TcpClient（serverIP，port）; //将传递的消息转换为ASCII并将其存储为字节数组。 Byte [] data = new Byte [256]; data = System.Text.Encoding.ASCII .GetBytes（消息）; //获取用于读写的客户端流。 //流stream = client.GetStream（）; NetworkStream stream = client.GetStream（）; //将消息发送到连接的TcpServer。 stream.Write（data，0，data.Length）; output =已发送：+消息; MessageBox.Show（输出）; //用于存储响应字节的缓冲区。 data = new Byte [256 ]; //存储响应ASCII表示的字符串。 字符串responseData = String.Empty; //读取第一批TcpServer响应字节。 Int32 bytes = stream.Read（data，0，data.Length）; responseData = System.Text.Encoding.ASCII.GetString（data，0，bytes）; output =Received：+ responseData; MessageBox.Show （输出）; //关闭所有内容。 stream.Close（）; client.Close （）; } catch（ArgumentNullException e） { output =ArgumentNullException：+ e; MessageBox.Show（输出）; } catch（SocketException e） { output =SocketException：+ e.ToString（）; MessageBox.Show（输出）; } }

but when i replace the "localhost" part with a string of my ip address like: "12.23.21.256", it tells me: "No connection could be made because the target machine actively refused it". In connect I have: static void Connect(string serverIP, string message) { string output = ""; try { // Create a TcpClient. // The client requires a TcpServer that is connected // to the same address specified by the server and port // combination. Int32 port = 13; TcpClient client = new TcpClient(serverIP, port); // Translate the passed message into ASCII and store it as a byte array. Byte[] data = new Byte[256]; data = System.Text.Encoding.ASCII.GetBytes(message); // Get a client stream for reading and writing. // Stream stream = client.GetStream(); NetworkStream stream = client.GetStream(); // Send the message to the connected TcpServer. stream.Write(data, 0, data.Length); output = "Sent: " + message; MessageBox.Show(output); // Buffer to store the response bytes. data = new Byte[256]; // String to store the response ASCII representation. String responseData = String.Empty; // Read the first batch of the TcpServer response bytes. Int32 bytes = stream.Read(data, 0, data.Length); responseData = System.Text.Encoding.ASCII.GetString(data, 0, bytes); output = "Received: " + responseData; MessageBox.Show(output); // Close everything. stream.Close(); client.Close(); } catch (ArgumentNullException e) { output = "ArgumentNullException: " + e; MessageBox.Show(output); } catch (SocketException e) { output = "SocketException: " + e.ToString(); MessageBox.Show(output); } }

推荐答案

您的计算机可能已阻止从给定端口连接到12.23.21.256 IP地址 读取在Windows防火墙中打开一个端口 [ ^ ]并打开给定的帖子再试一次，或者你可以通过临时的，你的f irewall和防病毒软件可以阻止你的端口。 your computer may have blocked conneting to 12.23.21.256 IP address from given port read Open a port in Windows Firewall[^] and open given post and try again, or you can test by temparary disssableing your firewall and antivirus software which can block your ports.