Angular2/Angular seed http-proxy-middleware proxy api requests -

im using angular seed project , trying set proxy api requests backend service running on different port.

my code far:

/* add proxy middleware */ this.proxy_middleware = [   require('http-proxy-middleware')({     ws: false,     target: 'http://localhost:5555',     router: {       // when request.headers.host == 'dev.localhost:3000',       // override target 'http://www.example.org' 'http://localhost:8000'       //'http://localhost:5555/basepath/api' : 'http://localhost:7000/api'     }   }) ]; 

basically need route api matching http://localhost:5555/basepath/api http://localhost:7000/api though cant seem working using http-proxy-middleware. had working using proxy-middleware have switched need modify request headers , seems can done http-proxy-middleware.

spent bit of time trying work , ended adding project.config.ts within constructor.

   /* add proxy middleware */     this.proxy_middleware = [       require('http-proxy-middleware')(         '/basepath/api', {         ws: false,         onproxyreq: this.onproxyreq,         target: 'http://localhost:7000',         pathrewrite: {           '^/basepath/api' : '/api'         }       })     ]; 

and function included below constructor add header requests proxied

onproxyreq(proxyreq: , req: any, res: any) {   // add custom headers request   proxyreq.setheader('header_name', 'value'); }