nodejs的net模块出现这个问题怎么回事，各位大神帮忙看一下！

events.js:72
    throw er; // Unhandled 'error' event
          ^

Error: This socket has been ended by the other party at Socket.writeAfterFIN [as write] (net.js:274:12) at broadcast (C:\nodejs\app.js:19:15) at Socket. (C:\nodejs\app.js:60:5) at Socket.EventEmitter.emit (events.js:95:17) at Socket. (stream_readable.js:710:14) at Socket.EventEmitter.emit (events.js:92:17) at emitReadable (_stream_readable.js:382:10) at emitReadable (_stream_readable.js:378:5) at readableAddChunk (_stream_readable.js:143:7) at Socket.Readable.push (_stream_readable.js:113:10)