Node.js is widely used to build web applications with real-time, two-way connections, where both the client and server can initiate communication, allowing them to exchange data freely.\u00a0The best\u00a0side is that we don\u2019t need a host container for building a web app just means including a library that listens for HTTP requests on a port and\u00a0responds.\u00a0It is\u00a0as simple as just coding your app and let it listen on any non-privileged port. Eg. 3000.<\/p>\n
With time things started getting complicated.\u00a0The requirement\u00a0of running node applications on privileged ports like 80, 443 starts emerging up.<\/p>\n
LAMP Server with Node.js and\u00a0npm\u00a0installed over it. I am using Ubuntu machine for this demo<\/p>\n
Enable the mod_proxy and mod_proxy_html Apache modules. They should be available by default so just enable them with the a2enmod command.\u00a0sudo\u00a0a2enmod proxy\u00a0sudo\u00a0a2enmod proxy_http. For more information on mod_proxysee the apache official documentation.<\/a> We have created the virtual host for domain\u00a0mydomain.com<\/strong>\u00a0on which we want to run a node\u00a0application. We have enabled the proxy module in apache and check.html will not be proxied through but will instead be served by the\u00a0Apache\u00a0server as a \u2018normal\u2019 page (the!\u00a0means it won\u2019t be sent through; for more info on the\u00a0proxypass\u00a0directive\u00a0see the apache official documentation.<\/a><\/p>\n Using above proxy configuration in a\u00a0vhost\u00a0file you will magically get your node server\u2019s responses running over\u00a0http:\/\/localhost:3000\/<\/strong>\u00a0by simply running the domain namemydomain.com<\/strong>.<\/p>\n Condition:<\/strong>\u00a0you\u00a0must have started you node application and it is successfully over https:\/\/mydomian.com:3000\/<\/p>\n One way is route traffic of port 80 to desired port internally using\u00a0iptables. In below\u00a0example, we have routed all incoming traffic on port 80 to port 3000.<\/p>\n Node.js <\/p>\n Node.js is widely used to build web applications with real-time, two-way connections, where both the client and server can initiate communication, allowing them to exchange data freely. The best side is that we don\u2019t need a host container for building a web app just means including a library that listens for HTTP requests on […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"_links":{"self":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/7553"}],"collection":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7553"}],"version-history":[{"count":2,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/7553\/revisions"}],"predecessor-version":[{"id":7555,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/7553\/revisions\/7555"}],"wp:attachment":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nCondition:<\/strong>\u00a0You\u00a0must have started you node application and it is successfully over http:\/\/mydomian.com:3000\/<\/p>\n<VirtualHost *:80>\r\n ServerName mydomain.com\r\n ServerAlias www.mydomain.com\r\n DocumentRoot \/var\/www\/nodeapp\/\r\n Options -Indexes\r\n ErrorDocument 503 \/check.html\r\n\r\n ProxyRequests on\r\n ProxyPass \/check.html !\r\n ProxyPass \/ http:\/\/mydomain.com:3000\/\r\n ProxyPassReverse \/ http:\/\/mydomain.com:3000\/\r\n<\/VirtualHost>\r\n<\/pre>\n
Using Apache\u2019s Mod_Proxy Module (SSL)<\/h2>\n
<VirtualHost *:443>\r\n ServerName mydomain.com\r\n ServerAlias www.mydomain.com\r\n DocumentRoot \/var\/www\/nodeapp\/\r\n Options -Indexes\r\n ErrorDocument 503 \/check.html\r\n\r\n SSLProxyEngine On\r\n ProxyPass \/check.html !\r\n ProxyPass \/ https:\/\/mydomain.com:3000\r\n ProxyPassReverse \/ https:\/\/mydomain.com:3000\r\n ProxyPreserveHost On\r\n\r\n SSLEngine on\r\n SSLCertificateFile \/etc\/apache2\/ssl\/mydomain.com.crt\r\n SSLCertificateKeyFile \/etc\/apache2\/ssl\/mydomain.com.key\r\n SSLCertificateChainFile \/etc\/apache2\/ssl\/mydomain.com:3000.ca-bundle\r\n<\/VirtualHost>\r\n<\/pre>\n
Secondary Option:<\/h2>\n
Routing Application Using IPTABLES<\/h2>\n
sudo iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3000<\/pre>\n","protected":false},"excerpt":{"rendered":"