Hosting static angular2 app on nginx and proxying http requests to backend api

Question

How do I get angular2 routes to work and proxy http requests to a rest api on another machine?

I have an angular2 web application on an nginx server which serves the static html files. I have a separate rest api hosted on a different machine with a different IP address. I have set the location to / in my nginx config file to allow the angular2 routes to work correctly. I have also added a location /api/ which i hoped would intercept any api requests and proxy them to my backend api.

My nginx conf with proxy set to http://swapi.co for test purposes.

events {
  worker_connections  4096;  ## Default: 1024
}

http {
  server {
    listen       80;
    server_name  localhost;

    root   /usr/share/nginx/html;
    index  index.html index.htm;
    include /etc/nginx/mime.types;

    location / {
         # If you want to enable html5Mode(true) in your angularjs app for pretty URL
         # then all request for your angularJS app will be through index.html
         try_files $uri /index.html;
    }

    # /api will server your proxied API that is running on same machine different port
    # or another machine. So you can protect your API endpoint not get hit by public directly
    location /api/ {
        proxy_pass http://swapi.co;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

    #Static File Caching. All static files with the following extension will be cached for 1 day
    location ~* .(jpg|jpeg|png|gif|ico|css|js)$ {
        expires 1d;
    }
  } 
}

My angular2 service

import { Injectable } from '@angular/core';
import { Http, Response } from '@angular/http';
import { Observable } from 'rxjs/Observable';

@Injectable()
export class Service {

  private url: string = '/api/people/';
  constructor (private http: Http) {}

  getPeople () {
    return this.http.get(this.url)
                  .map(res => res.json());
  }
}

Any help would be much appreciated.

So the angular routes work as expected but i cant get the api call in the service to proxy to another url. i.e it calls localhost/api/people rather than the address in the proxy swapi.co and as expected it times out as there is no rest api running locally. — Steve Fitzsimons
– Steve Fitzsimons, Commented Oct 6, 2016 at 19:53

Steve Fitzsimons · Accepted Answer · 2016-10-11 12:46:02Z

11

Got it to proxy requests correctly in my development environment. Added to the http block and pointed proxy pass to the upstream api value

upstream api {
  server 192.168.0.15:9998;
}

Complete config:

events {
  worker_connections  4096;  ## Default: 1024
}

http {

  # Change this depending on environment
  upstream api {
    server 192.168.0.1:9998;
  }

  server {
    listen       80;
    server_name  localhost;

    root   /usr/share/nginx/html;
    index  index.html index.htm;
    include /etc/nginx/mime.types;

    location / {
      # If you want to enable html5Mode(true) in your angularjs app for pretty URL
      # then all request for your angularJS app will be through index.html
      try_files $uri /index.html;
    }

    # /api will server your proxied API that is running on same machine different port
    # or another machine. So you can protect your API endpoint not get hit by public directly
    location /api {
      proxy_pass http://api;
      proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection 'upgrade';
      proxy_set_header Host $host;
      proxy_cache_bypass $http_upgrade;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

    #Static File Caching. All static files with the following extension will be cached for 1 day
    location ~* .(jpg|jpeg|png|gif|ico|css|js)$ {
      expires 1d;
    }
  }
}

answered Oct 11, 2016 at 12:46

Steve Fitzsimons

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2 Comments

dkhaupt Over a year ago

This was hugely helpful- I spent a while trying to do this exact same thing. Thanks for following up on your own question!

Steve Fitzsimons Over a year ago

No problem glad I could help. I spent quite some time getting it to work myself

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