feat: display server's listening address

lib/server.js

@@ -2,7 +2,7 @@
 
 const connect = require('connect');
 const http = require('http');
-const { underline } = require('picocolors');
+const { underline, bold } = require('picocolors');
 const Promise = require('bluebird');
 const open = require('open');
 const net = require('net');
@@ -21,14 +21,19 @@ module.exports = function(args) {
 
     return this.watch();
   }).then(() => startServer(http.createServer(app), port, ip)).then(server => {
+    const listeningAddress = getListeningAddress(server.address());
+    this.log.info('hexo-server listening on %s . Press Ctrl+C to stop.', bold(listeningAddress));
+
+    return server;
+  }).then(server => {
     const addr = server.address();
-    const addrString = formatAddress(ip || addr.address, addr.port, root);
+    const localAddress = getLocalAddress(ip || addr.address, addr.port, root);
 
-    this.log.info('Hexo is running at %s . Press Ctrl+C to stop.', underline(addrString));
+    this.log.info('Preview your site via: %s ', underline(localAddress));
     this.emit('server');
 
     if (args.o || args.open) {
-      open(addrString);
+      open(localAddress);
     }
 
     return server;
@@ -69,7 +74,18 @@ function checkPort(ip, port) {
   }).then(() => { server.close(); });
 }
 
-function formatAddress(ip, port, root) {
+function getListeningAddress(serverAddress) {
+  const {address, port, family} = serverAddress;
+  let host;
+  if (family === 'IPv6') {
+    host = `[${address}]`;
+  } else {
+    host = address;
+  }
+  return `${host}:${port}`;
+}
+
+function getLocalAddress(ip, port, root) {
   let hostname = ip;
   if (ip === '0.0.0.0' || ip === '::') {
     hostname = 'localhost';

test/index.js

@@ -259,7 +259,7 @@ describe('server', () => {
     stub.callsFake(spy);
 
     return Promise.using(prepareServer(), app => {
-      spy.args[1][1].should.contain('localhost');
+      spy.args[2][1].should.contain('localhost');
     }).finally(() => {
       stub.restore();
     });
@@ -271,7 +271,21 @@ describe('server', () => {
     stub.callsFake(spy);
 
     return Promise.using(prepareServer({ip: '::'}), app => {
-      spy.args[1][1].should.contain('localhost');
+      spy.args[2][1].should.contain('localhost');
+    }).finally(() => {
+      stub.restore();
+    });
+  });
+
+  it('display listening address', () => {
+    const spy = sinon.spy();
+    const stub = sinon.stub(hexo.log, 'info');
+    stub.callsFake(spy);
+
+    return Promise.using(prepareServer({ip: 'localhost'}), app => {
+      spy.args[1][1].should.satisfy(listenAddress => {
+        return listenAddress.includes('::1') || listenAddress.includes('127.0.0.1');
+      });
     }).finally(() => {
       stub.restore();
     });