the socket name is not available on this system

As an AI language model, I don't have enough context to provide a specific answer. However, "the socket name is not available on this system" typically indicates that a network socket, which is an endpoint for sending or receiving data across a computer network, cannot be created due to a conflict with another application or service already using the same port number. This error message can also occur if the socket name is misspelled or if the required socket library is not installed on the system. To resolve this issue, you may need to change the port number or check if any conflicting applications are running.

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c# java socketn 字节流_socket传输protobuf字节流的实例详解

使用 C# 和 Java 实现 Socket 传输 Protobuf 字节流的过程可以分为以下几个步骤：

1. 定义 Protobuf 消息结构

首先，需要使用 Protocol Buffers 定义消息结构。假设我们要传输的消息结构如下：

message Person {
    string name = 1;
    int32 age = 2;
    repeated string phone_number = 3;
}

2. 生成代码

使用 protobuf 编译器生成 C# 和 Java 的代码，方法如下：

protoc --csharp_out=. person.proto
protoc --java_out=. person.proto

3. C# 实现 Socket 发送

首先，在 C# 中创建一个 `Person` 对象，并将其序列化为字节数组，然后将其发送到 Java 服务器：

using System;
using System.Net.Sockets;
using Google.Protobuf;

class Program {
    static void Main(string[] args) {
        // 创建 Person 对象
        var person = new Person {
            Name = "张三",
            Age = 18,
            PhoneNumber = { "123456789", "987654321" }
        };

        // 将 Person 对象序列化为字节数组
        byte[] data = person.ToByteArray();

        // 创建 Socket 连接
        var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        socket.Connect("127.0.0.1", 8888);

        // 发送数据
        socket.Send(data);

        // 关闭连接
        socket.Shutdown(SocketShutdown.Both);
        socket.Close();
    }
}

4. Java 实现 Socket 接收

在 Java 中，我们需要创建一个 `ServerSocket`，并监听指定的端口。当有连接请求时，我们可以使用 `Socket` 接收数据，并将其反序列化为 `Person` 对象：

import com.example.PersonOuterClass.Person;
import com.google.protobuf.InvalidProtocolBufferException;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class Main {
    public static void main(String[] args) throws IOException {
        // 创建 ServerSocket，监听指定端口
        ServerSocket serverSocket = new ServerSocket(8888);

        while (true) {
            // 等待连接
            Socket socket = serverSocket.accept();

            // 读取数据
            byte[] buffer = new byte[socket.getInputStream().available()];
            socket.getInputStream().read(buffer);

            try {
                // 将字节数组反序列化为 Person 对象
                Person person = Person.parseFrom(buffer);
                System.out.println(person);
            } catch (InvalidProtocolBufferException e) {
                e.printStackTrace();
            }

            // 关闭连接
            socket.shutdownInput();
            socket.close();
        }
    }
}

这样，就完成了 C# 和 Java 之间通过 Socket 传输 Protobuf 字节流的实例。