java.net.SocketException：连接由对等方重置：服务文件时套接字写入错误

我正在尝试使用套接字实现 HTTP 服务器。如果客户端（例如浏览器）请求目录，服务器将显示可用文件的列表。当客户端请求文件时就会出现问题。我收到以下错误：

java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:113)
at java.net.SocketOutputStream.write(SocketOutputStream.java:159)
at cf.charly1811.java.web.RequestHandler.writeFile(RequestHandler.java:152)
at cf.charly1811.java.web.RequestHandler.processRequest(RequestHandler.java:139)
at cf.charly1811.java.web.RequestHandler.handleRequest(RequestHandler.java:110)
at cf.charly1811.java.web.RequestHandler.run(RequestHandler.java:86)
at java.lang.Thread.run(Thread.java:745)

堆栈跟踪显示问题来自writeFile()方法：

private void writeFile(File request) throws IOException 
{
    InputStream byteReader = new BufferedInputStream(new FileInputStream(request));
    byte[] buffer = new byte[1024];
    int bytesRead;
    while ((bytesRead = byteReader.read(buffer)) != -1) 
    {
        outputStream.write(buffer, 0, bytesRead);
    }
    byteReader.close();
}

但我不知道出了什么问题。 你能帮助我吗？

EDIT

谢谢大家的回答。在我阅读了您的答案后，我明白问题出在 Socket 发生错误时。这是我的错误代码：

// Method to process a single request
handleRequest() throw IOException
{
    // process here
    // if the client request a file
    writeFile();
    // close socket when the request is processed
}

// The method is called
public run()
{
    try{
        // If an error occurs the try/catch won't be called because it is implemented outside the loop. So when an IOException occurs, the loop just stop and exit the program
        while(true)
        {
            handleRequest();
        }
    }
    catch(IOException e) {
        // Handle exception here
    }
}

我的新代码如下所示：

// Method to process a single request
handleRequest()
{
   try {
        // process here
        // if the client request a file
        writeFile();
        // close socket when the request is processed
    }
    // If this exception occurs the catch() method will be called
    catch(IOException e)
    {
        // handle exception here
    }
}

// The method is called
public run()
{
    while(true)
        {
            handleRequest();
        }
    }
}

TCP 套接字有可能“关闭”，而您的代码尚未收到通知。

这是生命周期的动画。http://tcp.cs.st-andrews.ac.uk/index.shtml?page=connection_lifecycle http://tcp.cs.st-andrews.ac.uk/index.shtml?page=connection_lifecycle

基本上，连接被客户端关闭了。你已经拥有了throws IOException and SocketException延伸IOException。这工作得很好。你只需要正确处理IOException因为它是 api 的正常部分。

编辑：RST当在不存在或已关闭的套接字上接收到数据包时，就会发生数据包。您的应用程序没有任何区别。取决于实施情况reset状态可能会坚持并且closed永远不会正式发生。