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POHaving trouble running Phantomjs + node on Heroku
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copied!<p>I've successfully got Phantomjs to work on Heroku but now I'm hitting issues with the phantomjs-node interface for node.js (see <a href="https://github.com/sgentle/phantomjs-node" rel="noreferrer">https://github.com/sgentle/phantomjs-node</a>). </p> <p>When I'm attempting to initialize Phantom I'm seeing a 10-15 second delay and then:</p> <pre><code>> phantom stdout: ReferenceError: Can't find variable: socket phantom stdout: phantomjs://webpage.evaluate():1 phantomjs://webpage.evaluate():1 phantomjs://webpage.evaluate():1 </code></pre> <p>You can reproduce the problem with the following steps or by pulling down my test app at <a href="https://github.com/matellis/phantom-test" rel="noreferrer">https://github.com/matellis/phantom-test</a> </p> <pre><code>git init phantom-test cd phantom-test heroku apps:create # create node app as per Heroku instructions here https://devcenter.heroku.com/articles/nodejs # copy bin and lib folders from http://phantomjs.googlecode.com/files/phantomjs-1.6.1-linux-x86_64-dynamic.tar.bz2 into root of your new project # if you don't do this step you'll get an error "phantom stderr: execvp(): No such file or directory" git add . git commit -m "init" git push heroku </code></pre> <p>Test your app has come up, the third to last line will tell you the URL, it should read like:</p> <pre><code>http://fathomless-ravine-5563.herokuapp.com deployed to Heroku </code></pre> <p>If successful you should see Hello World! in your browser.</p> <p>Now from the same folder as your Heroku application run:</p> <pre><code>heroku run node </code></pre> <p>At the node prompt try the following:</p> <pre><code>phantom = require('phantom'); x = phantom.create(); </code></pre> <p>Wait 10-15 seconds and you should see the error. Nothing works from this point on.</p> <p>This should output file <code>foo.png</code>:</p> <pre><code>x = phantom.create(function(ph){ph.createPage(function(page){ page.open('http://bbcnews.com', function(status){ page.render('foo.png', function(result) {ph.exit()}); }); }); }); </code></pre> <p>To validate Phantomjs is working fine on Heroku, try the following using my test project:</p> <pre><code>>heroku run bash Running `bash` attached to terminal... up, run.1 ~ $ phantomjs test.js http://bbcnews.com foo.png ~ $ ls *.png foo.png </code></pre> <p>I cannot reproduce any of these problems locally but there are other issues reported where folks may have hit this issue locally.</p> <p>The problem seems to originate in <code>shim.js</code> line 1637:</p> <pre><code>s.on('request', function(req) { var evil; evil = "function(){socket.emit('message', " + (JSON.stringify(JSON.stringify(req))) + " + '\\n');}"; return controlPage.evaluate(evil); }); </code></pre> <p>I've tried variations of versions of node, phantom, etc. with no luck.</p> <p>I've also tried a custom buildpack that sets the DYLD variable, see <a href="http://github.com/tecnh/heroku-buildpack-nodejs" rel="noreferrer">http://github.com/tecnh/heroku-buildpack-nodejs</a> with no luck either.</p> <p>Anyone who has got Phantom + Node playing together nicely on Heroku please let me know. There are several references to this on Stackoverflow but nobody is saying "I got it to work, here's how".</p>

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