events.js:72 // unhandled 'error' event; Error: This socket is closed

[kyleva]

I'm using the gulp-imagemin plugin to minify image files. Unfortunately, every time I save into the image directory specified in my watch task (gulp.watch('src/assets/images/**/*', ['images']);), there is the following error:

Starting 'images'...

events.js:72
        throw er; // Unhandled 'error' event
              ^
Error: This socket is closed.
    at Socket._write (net.js:637:19)
    at doWrite (_stream_writable.js:225:10)
    at writeOrBuffer (_stream_writable.js:215:5)
    at Socket.Writable.write (_stream_writable.js:182:11)
    at Socket.write (net.js:615:40)
    at Socket.Writable.end (_stream_writable.js:340:10)
    at Socket.end (net.js:396:31)
    at Through2._transform (C:\Storage\Web\uva\node_modules\gulp-imagemin\node_modules\imagemin\node_modules\imagemin-jpegtran\index.js:68:12)
    at Through2.Transform._read (C:\Storage\Web\uva\node_modules\gulp-imagemin\node_modules\imagemin\node_modules\through2\node_modules\readable-stream\lib\_stream_transform.js:184:10)
    at Through2.Transform._write (C:\Storage\Web\uva\node_modules\gulp-imagemin\node_modules\imagemin\node_modules\through2\node_modules\readable-stream\lib\_stream_transform.js:172:12)

Here's my images task:

gulp.task('images', function(){
    gulp.src('src/assets/images/**/*')
        .pipe(imagemin({ optimizationLevel: 3, progressive: true, interlaced: true}))
        .pipe(gulp.dest('dist/assets/images'))
        .pipe(livereload())
        .pipe(notify({message: "Image task complete"}));
});

What I've tried so far

• npm cache clean followed by deleting all everything in node_modules folder and running npm install
• Running my images task and targeting only one image (e.g. gulp.src('src/assets/images/background-image.png'). This was mentioned in Error That Fixes by Restarting #45.
• Specifying separate image formats as an argument for gulp.src. (e.g. gulp.src(['images/**/*.png', 'images/**/*.jpg', 'images/**/*.svg']). This was mentioned in Error That Fixes by Restarting #45.
• Uninstall gulp-imagemin and reinstall gulp-imagemin
• npm install jpegtran-bin (there appeared to be an error when installing this, more on this in a sec). This was mentioned in grunt-contrib-imagemin #272.
• Uninstall/reinstall node.js

Now, one thing I noticed a problem with .. was when installing gulp-imagemin there was an error with one of it's dependencies. When installing there were some errors with jpegtran so I manually attempted to install jpegtran-bin. When running this command I received the following result:

>npm install jpegtran-bin
npm WARN package.json uva@0.1.0 No repository field.
\
> jpegtran-bin@2.0.2 postinstall C:\Storage\Web\uva\node_modules\jpegtran-bin
> node lib/install.js

  ‼ ENOENT, stat 'C:\Storage\Web\uva\node_modules\jpegtran-bin\vendor\jpegtran.exe'
  ‼ jpegtran pre-build test failed
  i compiling from source
  x Error: Command failed: '.' is not recognized as an internal or external command,
operable program or batch file.

    at ChildProcess.exithandler (child_process.js:648:15)
    at ChildProcess.emit (events.js:98:17)
    at maybeClose (child_process.js:756:16)
    at Process.ChildProcess._handle.onexit (child_process.js:823:5)
jpegtran-bin@2.0.2 node_modules\jpegtran-bin
├── logalot@2.1.0 (figures@1.3.5, squeak@1.2.0)
├── bin-build@2.1.0 (rimraf@2.2.8, exec-series@1.0.1, tempfile@1.1.0, download@3.2.0)
└── bin-wrapper@2.1.1 (os-filter-obj@1.0.0, is-path-global@1.0.1, download-status@2.1.0, lnfs@1.0.0, bin-version-check@1.0.0, npm-installed@1.0.0, bin-check@1.0.0, globby@0.1.1, download@3.2.0)

My gulpfile.js:

var gulp = require('gulp'),
    sass = require('gulp-sass'),
    autoprefixer = require('gulp-autoprefixer'),
    cache = require('gulp-cache'),
    concat = require('gulp-concat'),
    imagemin = require('gulp-imagemin'),
    jshint = require('gulp-jshint'),
    livereload = require('gulp-livereload'),
    minifycss = require('gulp-minify-css'),
    notify = require('gulp-notify'),
    rename = require('gulp-rename'),
    uglify = require('gulp-uglify'),
    htmlmin = require('gulp-htmlmin'),
    webserver = require('gulp-webserver'),
    del = require('del');

gulp.task('webserver', function(){
    gulp.src('src')
        .pipe(webserver({
            livereload: true,
            open: true
        })
    );
});

gulp.task('styles', function(){
    gulp.src('src/assets/styles/main.scss')
        .pipe(sass())
        .pipe(autoprefixer('last 2 version', 'safari 5', 'ie 8', 'ie 9', 'opera 12.1', 'ios 6', 'android 4'))
        .pipe(gulp.dest('src/assets/styles'))
        .pipe(rename({ suffix: '.min' }))
        .pipe(minifycss())
        .pipe(gulp.dest('dist/assets/styles'))
        .pipe(livereload())
        .pipe(notify({ message: 'Styles task complete' }));

});

gulp.task('scripts', function(){
    gulp.src('src/assets/scripts/**/*.js')
        .pipe(jshint('.jshintrc'))
        .pipe(jshint.reporter('default'))
        .pipe(concat('main.js'))
        .pipe(gulp.dest('dist/assets/scripts'))
        .pipe(rename({suffix: '.min'}))
        .pipe(uglify())
        .pipe(gulp.dest('dist/assets/scripts'))
        .pipe(livereload())
        .pipe(notify({ message: 'Scripts task complete'}));
});

gulp.task('html', function(){
    gulp.src('src/*.html')
        .pipe(htmlmin({ collapseWhitespace: true, removeComments: true, removeAttributeQuotes: true, removeRedundantAttributes: true, minifyJS: true }))
        .pipe(gulp.dest('dist'))
        .pipe(livereload())
        .pipe(notify({ message: 'Html task complete' }));
});

gulp.task('images', function(){
    gulp.src('src/assets/images/**/*')
        .pipe(imagemin({ optimizationLevel: 3, progressive: true, interlaced: true}))
        .pipe(gulp.dest('dist/assets/images'))
        .pipe(livereload())
        .pipe(notify({message: "Image task complete"}));
});

gulp.task('clean', function(cb){
    del([
        'dist/assets/styles',
        'dist/assets/scripts',
        'dist/assets/images'
    ], cb);
});

gulp.task('default', ['clean'], function(){
    gulp.start('styles', 'scripts', 'images', 'html');
});

gulp.task('serve', function(){
    gulp.start('webserver', 'watch');
});

gulp.task('watch', function(){
    livereload.listen();

    gulp.watch('src/assets/styles/**/*.scss', ['styles']);

    gulp.watch('src/assets/scripts/**/*.js', ['scripts']);

    gulp.watch('src/assets/images/**/*', ['images']);

    gulp.watch('src/*.html', ['html']);
});

Any idea on if there's a bug here or if I'm doing something incorrectly?

[kyleva]

Changing the versions of the jpegtran-bin dependencies in node_modules/jpegtran-bin/package.json did the trick.

"dependencies": {
    //"bin-build": "^2.0.0",
    //"bin-wrapper": "^2.0.1",
    "bin-build": "^0.2.0",
    "bin-wrapper": "^0.4.0",
    "logalot": "^2.0.0"
  }

[kyleva]

See: jpegtran-bin #54.

[elartix]

workaround imagemin/jpegtran-bin#54 (comment)

[IOZ]

Please, reopen this issue and make plugin updates according comments above.

[sindresorhus]

Please, realize this issue has nothing to do with this plugin directly.