node.js - Swagger running on Heroku: port problems? -

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i using nodejs, express, swagger-tools swagger api document showing /docs in heroku dyno. locally works, on heroku port not listening.

app[web.1]: info: swagger-ui available on localhost:5765/docs heroku[web.1]: state changed crashed starting heroku[web.1]: error r10 (boot timeout) -> web process failed bind $port within 60 seconds of launch heroku[web.1]: stopping process sigkill heroku[web.1]: process exited status 137

on code, have port predetermined heroku.

var listen_addr = 'localhost'; var listen_port = process.env.port || 8080;  var swaggerdoc = require(options.swaggerui); swaggerdoc.host = listen_addr +":" + listen_port;    // making sure of add  swaggertools.initializemiddleware(swaggerdoc, function (middleware) {    app.use(middleware.swaggermetadata());   app.use(middleware.swaggervalidator());              app.use(middleware.swaggerui() );                app.use(middleware.swaggerrouter(options) );    app.listen(listen_port, listen_addr) {           winston.info('server listening on %s:%d', listen, port);     winston.info('swagger-ui available on %s:%d/docs', listen, port);   }); });

update: problem seemed solved changing app.listen app.listen( process.env.port || 3000, function()


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