Automattic · vkarpov15 · Dec 19, 2022 · Dec 17, 2022 · vkarpov15 · Dec 19, 2022
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -58,7 +58,7 @@ If you'd like to preview your documentation changes, first commit your changes t
 * `npm install`
 * `npm run docs:view`
 
-Visit `http://localhost:8089` and you should see the docs with your local changes. Make sure you `npm run docs:clean` before committing, because automated generated files to `docs/*` should **not** be in PRs.
+Visit `http://127.0.0.1:8089` and you should see the docs with your local changes. Make sure you `npm run docs:clean` before committing, because automated generated files to `docs/*` should **not** be in PRs.
 
 #### Documentation Style Guidelines
 

diff --git a/README.md b/README.md
@@ -66,7 +66,7 @@ const require = createRequire(import.meta.url);
 
 const mongoose = require('mongoose');
 
-mongoose.connect('mongodb://localhost:27017/test')
+mongoose.connect('mongodb://127.0.0.1:27017/test')
   .then(() => console.log('Connected!'));
 ```
 
@@ -91,12 +91,12 @@ First, we need to define a connection. If your app uses only one database, you s
 Both `connect` and `createConnection` take a `mongodb://` URI, or the parameters `host, database, port, options`.
 
 ```js
-await mongoose.connect('mongodb://localhost/my_database');
+await mongoose.connect('mongodb://127.0.0.1/my_database');
 ```
 
 Once connected, the `open` event is fired on the `Connection` instance. If you're using `mongoose.connect`, the `Connection` is `mongoose.connection`. Otherwise, `mongoose.createConnection` return value is a `Connection`.
 
-**Note:** _If the local connection fails then try using 127.0.0.1 instead of localhost. Sometimes issues may arise when the local hostname has been changed._
+**Note:** _If the local connection fails then try using 127.0.0.1 instead of 127.0.0.1. Sometimes issues may arise when the local hostname has been changed._
 
 **Important!** Mongoose buffers all the commands until it's connected to the database. This means that you don't have to wait until it connects to MongoDB in order to define models, run queries, etc.
 

diff --git a/benchmarks/benchjs/delete.js b/benchmarks/benchjs/delete.js
@@ -17,11 +17,11 @@ const mongoClient = require('mongodb').MongoClient;
  * These are all the benchmark tests for deleting data
  */
 
-mongoose.connect('mongodb://localhost/mongoose-bench', function (err) {
+mongoose.connect('mongodb://127.0.0.1/mongoose-bench', function (err) {
   if (err) {
     throw err;
   }
-  mongoClient.connect('mongodb://localhost', function (err, client) {
+  mongoClient.connect('mongodb://127.0.0.1', function (err, client) {
     if (err) {
       throw err;
     }

diff --git a/benchmarks/benchjs/insert.js b/benchmarks/benchjs/insert.js
@@ -19,12 +19,12 @@ const ObjectId = Schema.Types.ObjectId;
  * These are all the benchmark tests for inserting data
  */
 
-mongoose.connect('mongodb://localhost/mongoose-bench', function (err) {
+mongoose.connect('mongodb://127.0.0.1/mongoose-bench', function (err) {
   if (err) {
     throw err;
   }
   mongoClient.connect(
-    'mongodb://localhost/mongoose-bench',
+    'mongodb://127.0.0.1/mongoose-bench',
     function (err, client) {
       if (err) {
         throw err;

diff --git a/benchmarks/benchjs/multiop.js b/benchmarks/benchjs/multiop.js
@@ -19,11 +19,11 @@ const utils = require('../../lib/utils.js');
  * These are all the benchmark tests for mixed data operations
  */
 
-mongoose.connect('mongodb://localhost/mongoose-bench', function (err) {
+mongoose.connect('mongodb://127.0.0.1/mongoose-bench', function (err) {
   if (err) {
     throw err;
   }
-  mongoClient.connect('mongodb://localhost', function (err, client) {
+  mongoClient.connect('mongodb://127.0.0.1', function (err, client) {
     if (err) {
       throw err;
     }

diff --git a/benchmarks/benchjs/population.js b/benchmarks/benchjs/population.js
@@ -18,7 +18,7 @@ const utils = require('../../lib/utils.js');
  * These are all the benchmark tests for population ops
  */
 
-mongoose.connect('mongodb://localhost/mongoose-bench', function (err) {
+mongoose.connect('mongodb://127.0.0.1/mongoose-bench', function (err) {
   if (err) {
     throw err;
   }

diff --git a/benchmarks/benchjs/read.js b/benchmarks/benchjs/read.js
@@ -20,11 +20,11 @@ const utils = require('../../lib/utils.js');
  * These are all the benchmark tests for reading data
  */
 
-mongoose.connect('mongodb://localhost/mongoose-bench', function (err) {
+mongoose.connect('mongodb://127.0.0.1/mongoose-bench', function (err) {
   if (err) {
     throw err;
   }
-  mongoClient.connect('mongodb://localhost', function (err, client) {
+  mongoClient.connect('mongodb://127.0.0.1', function (err, client) {
     if (err) {
       throw err;
     }

diff --git a/benchmarks/benchjs/update.js b/benchmarks/benchjs/update.js
@@ -20,11 +20,11 @@ const utils = require('../../lib/utils.js');
  * These are all the benchmark tests for updating data
  */
 
-mongoose.connect('mongodb://localhost/mongoose-bench', function (err) {
+mongoose.connect('mongodb://127.0.0.1/mongoose-bench', function (err) {
   if (err) {
     throw err;
   }
-  mongoClient.connect('mongodb://localhost', function (err, client) {
+  mongoClient.connect('mongodb://127.0.0.1', function (err, client) {
     if (err) {
       throw err;
     }

diff --git a/benchmarks/mem.js b/benchmarks/mem.js
@@ -4,7 +4,7 @@ const mongoose = require('../');
 
 const Schema = mongoose.Schema;
 
-mongoose.connect('mongodb://localhost/mongoose-bench');
+mongoose.connect('mongodb://127.0.0.1/mongoose-bench');
 
 const DocSchema = new Schema({
   title: String

diff --git a/benchmarks/populate.js b/benchmarks/populate.js
@@ -18,7 +18,7 @@ const B = mongoose.model('B', Schema({
 let start;
 let count = 0;
 
-mongoose.connect('mongodb://localhost/mongoose-bench', function(err) {
+mongoose.connect('mongodb://127.0.0.1/mongoose-bench', function(err) {
   if (err) {
     return done(err);
   }

diff --git a/docs/connections.md b/docs/connections.md
@@ -3,7 +3,7 @@
 You can connect to MongoDB with the `mongoose.connect()` method.
 
 ```javascript
-mongoose.connect('mongodb://localhost:27017/myapp');
+mongoose.connect('mongodb://127.0.0.1:27017/myapp');
 ```
 
 This is the minimum needed to connect the `myapp` database running locally
@@ -39,7 +39,7 @@ Mongoose lets you start using your models immediately, without waiting for
 mongoose to establish a connection to MongoDB.
 
 ```javascript
-mongoose.connect('mongodb://localhost:27017/myapp');
+mongoose.connect('mongodb://127.0.0.1:27017/myapp');
 const MyModel = mongoose.model('Test', new Schema({ name: String }));
 // Works
 MyModel.findOne(function(error, result) { /* ... */ });
@@ -56,7 +56,7 @@ const MyModel = mongoose.model('Test', new Schema({ name: String }));
 MyModel.findOne(function(error, result) { /* ... */ });
 
 setTimeout(function() {
-  mongoose.connect('mongodb://localhost:27017/myapp');
+  mongoose.connect('mongodb://127.0.0.1:27017/myapp');
 }, 60000);
 ```
 
@@ -101,12 +101,12 @@ There are two classes of errors that can occur with a Mongoose connection.
 To handle initial connection errors, you should use `.catch()` or `try/catch` with async/await.
 
 ```javascript
-mongoose.connect('mongodb://localhost:27017/test').
+mongoose.connect('mongodb://127.0.0.1:27017/test').
   catch(error => handleError(error));
 
 // Or:
 try {
-  await mongoose.connect('mongodb://localhost:27017/test');
+  await mongoose.connect('mongodb://127.0.0.1:27017/test');
 } catch (error) {
   handleError(error);
 }
@@ -201,9 +201,9 @@ driver. You **can't** set Mongoose-specific options like `bufferCommands`
 in the query string.
 
 ```javascript
-mongoose.connect('mongodb://localhost:27017/test?connectTimeoutMS=1000&bufferCommands=false&authSource=otherdb');
+mongoose.connect('mongodb://127.0.0.1:27017/test?connectTimeoutMS=1000&bufferCommands=false&authSource=otherdb');
 // The above is equivalent to:
-mongoose.connect('mongodb://localhost:27017/test', {
+mongoose.connect('mongodb://127.0.0.1:27017/test', {
   connectTimeoutMS: 1000
   // Note that mongoose will **not** pull `bufferCommands` from the query string
 });
@@ -453,7 +453,7 @@ using your connection options:
 mongoose.createConnection(uri, { maxPoolSize: 10 });
 
 // With connection string options
-const uri = 'mongodb://localhost:27017/test?maxPoolSize=10';
+const uri = 'mongodb://127.0.0.1:27017/test?maxPoolSize=10';
 mongoose.createConnection(uri);
 ```
 

diff --git a/docs/guide.md b/docs/guide.md
@@ -274,9 +274,9 @@ While nice for development, it is recommended this behavior be disabled in produ
 Disable the behavior by setting the `autoIndex` option of your schema to `false`, or globally on the connection by setting the option `autoIndex` to `false`.
 
 ```javascript
-mongoose.connect('mongodb://user:pass@localhost:port/database', { autoIndex: false });
+mongoose.connect('mongodb://user:pass@127.0.0.1:port/database', { autoIndex: false });
 // or
-mongoose.createConnection('mongodb://user:pass@localhost:port/database', { autoIndex: false });
+mongoose.createConnection('mongodb://user:pass@127.0.0.1:port/database', { autoIndex: false });
 // or
 mongoose.set('autoIndex', false);
 // or

diff --git a/docs/migrating_to_5.md b/docs/migrating_to_5.md
@@ -70,10 +70,10 @@ MyModel.find().exec(function() {
 // Worked in mongoose 4. Does **not** work in mongoose 5, `mongoose.connect()`
 // now returns a promise consistently. This is to avoid the horrible things
 // we've done to allow mongoose to be a thenable that resolves to itself.
-mongoose.connect('mongodb://localhost:27017/test').model('Test', new Schema({}));
+mongoose.connect('mongodb://127.0.0.1:27017/test').model('Test', new Schema({}));
 
 // Do this instead
-mongoose.connect('mongodb://localhost:27017/test');
+mongoose.connect('mongodb://127.0.0.1:27017/test');
 mongoose.model('Test', new Schema({}));
 ```
 
@@ -87,8 +87,8 @@ no longer supports several function signatures for `mongoose.connect()` that
 worked in Mongoose 4.x if the `useMongoClient` option was off. Below are some
 examples of `mongoose.connect()` calls that do **not** work in Mongoose 5.x.
 
-* `mongoose.connect('localhost', 27017);`
-* `mongoose.connect('localhost', 'mydb', 27017);`
+* `mongoose.connect('127.0.0.1', 27017);`
+* `mongoose.connect('127.0.0.1', 'mydb', 27017);`
 * `mongoose.connect('mongodb://host1:27017,mongodb://host2:27017');`
 
 In Mongoose 5.x, the first parameter to `mongoose.connect()` and `mongoose.createConnection()`, if specified, **must** be a [MongoDB connection string](https://docs.mongodb.com/manual/reference/connection-string/). The

diff --git a/docs/migrating_to_6.md b/docs/migrating_to_6.md
@@ -90,7 +90,7 @@ res.deletedCount; // Number of documents that were deleted. Replaces `res.n`
 // No longer necessary:
 mongoose.set('useFindAndModify', false);
 
-await mongoose.connect('mongodb://localhost:27017/test', {
+await mongoose.connect('mongodb://127.0.0.1:27017/test', {
   useNewUrlParser: true, // <-- no longer necessary
   useUnifiedTopology: true // <-- no longer necessary
 });

diff --git a/docs/models.md b/docs/models.md
@@ -64,13 +64,13 @@ uses is open. Every model has an associated connection. When you use
 `mongoose.model()`, your model will use the default mongoose connection.
 
 ```javascript
-mongoose.connect('mongodb://localhost/gettingstarted');
+mongoose.connect('mongodb://127.0.0.1/gettingstarted');
 ```
 
 If you create a custom connection, use that connection's `model()` function
 instead.
 ```javascript
-const connection = mongoose.createConnection('mongodb://localhost:27017/test');
+const connection = mongoose.createConnection('mongodb://127.0.0.1:27017/test');
 const Tank = connection.model('Tank', yourSchema);
 ```
 

diff --git a/docs/populate.md b/docs/populate.md
@@ -444,8 +444,8 @@ Let's say you have a schema representing events, and a schema representing
 conversations. Each event has a corresponding conversation thread.
 
 ```javascript
-const db1 = mongoose.createConnection('mongodb://localhost:27000/db1');
-const db2 = mongoose.createConnection('mongodb://localhost:27001/db2');
+const db1 = mongoose.createConnection('mongodb://127.0.0.1:27000/db1');
+const db2 = mongoose.createConnection('mongodb://127.0.0.1:27001/db2');
 
 const conversationSchema = new Schema({ numMessages: Number });
 const Conversation = db2.model('Conversation', conversationSchema);

diff --git a/docs/tutorials/ssl.md b/docs/tutorials/ssl.md
@@ -3,10 +3,10 @@
 Mongoose supports connecting to [MongoDB clusters that require SSL connections](https://docs.mongodb.com/manual/tutorial/configure-ssl/). Setting the `ssl` option to `true` in [`mongoose.connect()`](../api/mongoose.html#mongoose_Mongoose-connect) or your connection string is enough to connect to a MongoDB cluster using SSL:
 
 ```javascript
-mongoose.connect('mongodb://localhost:27017/test', { ssl: true });
+mongoose.connect('mongodb://127.0.0.1:27017/test', { ssl: true });
 
 // Equivalent:
-mongoose.connect('mongodb://localhost:27017/test?ssl=true');
+mongoose.connect('mongodb://127.0.0.1:27017/test?ssl=true');
 ```
 
 The `ssl` option defaults to `false` for connection strings that start with `mongodb://`. However,
@@ -27,7 +27,7 @@ By default, Mongoose validates the SSL certificate against a [certificate author
 to `false`.
 
 ```javascript
-mongoose.connect('mongodb://localhost:27017/test', {
+mongoose.connect('mongodb://127.0.0.1:27017/test', {
   ssl: true,
   sslValidate: false
 });
@@ -49,7 +49,7 @@ server is not registered with an established certificate authority. The solution
 [essentially sets a list of allowed SSL certificates](https://mongodb.github.io/node-mongodb-native/2.1/tutorials/connect/ssl/).
 
 ```javascript
-await mongoose.connect('mongodb://localhost:27017/test', {
+await mongoose.connect('mongodb://127.0.0.1:27017/test', {
   ssl: true,
   sslValidate: true,
   // For example, see https://medium.com/@rajanmaharjan/secure-your-mongodb-connections-ssl-tls-92e2addb3c89
@@ -76,19 +76,19 @@ If you're using [X509 authentication](https://www.mongodb.com/docs/drivers/node/
 ```javascript
 // Do this:
 const username = 'myusername';
-await mongoose.connect(`mongodb://${encodeURIComponent(username)}@localhost:27017/test`, {
+await mongoose.connect(`mongodb://${encodeURIComponent(username)}@127.0.0.1:27017/test`, {
   ssl: true,
   sslValidate: true,
   sslCA: `${__dirname}/rootCA.pem`,
   authMechanism: 'MONGODB-X509'
 });
 
 // Not this:
-await mongoose.connect(`mongodb://localhost:27017/test`, {
+await mongoose.connect(`mongodb://127.0.0.1:27017/test`, {
   ssl: true,
   sslValidate: true,
   sslCA: `${__dirname}/rootCA.pem`,
   authMechanism: 'MONGODB-X509'.
   auth: { username }
 });
-```
+```
diff --git a/docs/typescript.md b/docs/typescript.md
@@ -37,7 +37,7 @@ run().catch(err => console.log(err));
 
 async function run() {
   // 4. Connect to MongoDB
-  await connect('mongodb://localhost:27017/test');
+  await connect('mongodb://127.0.0.1:27017/test');
 
   const user = new User({
     name: 'Bill',

diff --git a/docs/typescript/query-helpers.md b/docs/typescript/query-helpers.md
@@ -69,7 +69,7 @@ const ProjectModel = model<Project, ProjectModelType>('Project', schema);
 run().catch(err => console.log(err));
 
 async function run(): Promise<void> {
-  await connect('mongodb://localhost:27017/test');
+  await connect('mongodb://127.0.0.1:27017/test');
 
   // Equivalent to `ProjectModel.find({ stars: { $gt: 1000 }, name: 'mongoose' })`
   await ProjectModel.find().where('stars').gt(1000).byName('mongoose');
@@ -99,4 +99,4 @@ const ProjectModel = model('Project', ProjectSchema);
 
 // Equivalent to `ProjectModel.find({ stars: { $gt: 1000 }, name: 'mongoose' })`
 await ProjectModel.find().where('stars').gt(1000).byName('mongoose');
-```
+```
diff --git a/examples/aggregate/aggregate.js b/examples/aggregate/aggregate.js
@@ -51,7 +51,7 @@ const data = [
 ];
 
 
-mongoose.connect('mongodb://localhost/persons', function(err) {
+mongoose.connect('mongodb://127.0.0.1/persons', function(err) {
   if (err) throw err;
 
   // create all of the dummy people

diff --git a/examples/doc-methods.js b/examples/doc-methods.js
@@ -36,12 +36,12 @@ CharacterSchema.methods.attack = function() {
 const Character = mongoose.model('Character', CharacterSchema);
 
 /**
- * Connect to the database on localhost with
+ * Connect to the database on 127.0.0.1 with
  * the default port (27017)
  */
 
 const dbname = 'mongoose-example-doc-methods-' + ((Math.random() * 10000) | 0);
-const uri = 'mongodb://localhost/' + dbname;
+const uri = 'mongodb://127.0.0.1/' + dbname;
 
 console.log('connecting to %s', uri);
 

diff --git a/examples/express/connection-sharing/README.md b/examples/express/connection-sharing/README.md
@@ -3,4 +3,4 @@ To run:
 
 - Execute `npm install` from this directory
 - Execute `node app.js`
-- Navigate to `localhost:8000`
+- Navigate to `127.0.0.1:8000`
diff --git a/examples/express/connection-sharing/app.js b/examples/express/connection-sharing/app.js
@@ -2,7 +2,7 @@
 const express = require('express');
 const mongoose = require('../../../lib');
 
-const uri = 'mongodb://localhost/mongoose-shared-connection';
+const uri = 'mongodb://127.0.0.1/mongoose-shared-connection';
 global.db = mongoose.createConnection(uri);
 
 const routes = require('./routes');
@@ -12,4 +12,4 @@ app.get('/', routes.home);
 app.get('/insert', routes.insert);
 app.get('/name', routes.modelName);
 
-app.listen(8000, () => console.log('listening on http://localhost:8000'));
+app.listen(8000, () => console.log('listening on http://127.0.0.1:8000'));
diff --git a/examples/geospatial/geoJSONexample.js b/examples/geospatial/geoJSONexample.js
@@ -21,7 +21,7 @@ const data = [
 ];
 
 
-mongoose.connect('mongodb://localhost/locations', function(err) {
+mongoose.connect('mongodb://127.0.0.1/locations', function(err) {
   if (err) {
     throw err;
   }