我正在尝试添加一些任务。我有一个基本的HTML网站，我想监视更改并重新加载更新的更改。我正在尝试使用livereload进行监听和更改。但是，当它重新加载时，我得到一个错误，表明该端口已在使用中，这是有道理的。但是我找不到解决方案。第一次使用Gulp，因此欢迎提出任何使我做得更好的提示

    var gulp = require('gulp');
var livereload = require('gulp-livereload');
var rev = require('gulp-rev');
var clean = require('gulp-rimraf');
var runSequence = require('run-sequence').use(gulp);
var connect = require('gulp-connect');

gulp.task('build',function () {
  // by default,gulp would pick `assets/css` as the base,// so we need to set it explicitly:
  return gulp.src(['assets/css/*.css','assets/css/**/*.css','assets/js/*.js','assets/js/**/*.js','assets/js/**/**/*.js','assets/img/**/*.jpg','assets/img/**/*.png'],{ base: 'assets' })
    .pipe(gulp.dest('build/assets'))  // copy original assets to build dir
    .pipe(rev())
    .pipe(gulp.dest('build/assets'))  // write rev'd assets to build dir
    .pipe(rev.manifest())
    .pipe(gulp.dest('build/assets')); // write manifest to build dir
});

gulp.task('copy',function () {
  gulp.src('index.html')
    .pipe(gulp.dest('build'));
  gulp.src('assets/fonts/*.*')
    .pipe(gulp.dest('build/assets/fonts'));
  gulp.src('assets/fonts/revicons/*.*')
    .pipe(gulp.dest('build/assets/fonts/revicons'));
});

gulp.task('clean',[],function() {
  return gulp.src("build/*",{ read: false }).pipe(clean());
});

gulp.task('watch',function () {
  livereload.listen(35729,function(err) {
    if(err) return console.log(err);
  })
  gulp.watch(['index.html','assets/css/*.css',function (e) {
    livereload.changed(e.path,35729)
  });
});

gulp.task('connect',function() {
  connect.server({
    host: '0.0.0.0',root: 'build',port: 8000,livereload: true
  });
});

gulp.task('default',function() {
  runSequence(
    'dist',['connect','watch']
  );
});

gulp.task('dist',['clean'],function () {
  gulp.start('build');
  gulp.start('copy');
});