feat(raiden-resolver): add configuration option for listening interface

bin/xud

@@ -76,6 +76,10 @@ const { argv } = require('yargs')
       describe: 'Port to listen for http requests',
       type: 'number',
     },
+    'http.host': {
+      describe: 'Host of the http server',
+      type: 'string',
+    },
     'lnd.[currency].certpath': {
       describe: 'Path to the SSL certificate for lnd',
       type: 'string',

lib/Config.ts

@@ -18,7 +18,7 @@ class Config {
   public logdateformat: string;
   public network: XuNetwork;
   public rpc: { disable: boolean, host: string, port: number };
-  public http: { port: number };
+  public http: { host: string, port: number };
   public lnd: { [currency: string]: LndClientConfig | undefined } = {};
   public raiden: RaidenClientConfig;
   public orderthresholds: OrderBookThresholds;
@@ -89,6 +89,7 @@ class Config {
       port: 8886,
     };
     this.http = {
+      host: 'localhost',
       port: 8887,
     };
     this.webproxy = {

lib/Xud.ts

@@ -145,7 +145,10 @@ class Xud extends EventEmitter {
 
       if (!this.swapClientManager.raidenClient.isDisabled()) {
         this.httpServer = new HttpServer(loggers.http, this.service);
-        await this.httpServer.listen(this.config.http.port);
+        await this.httpServer.listen(
+          this.config.http.port,
+          this.config.http.host,
+        );
       }
 
       // start rpc server last

lib/http/HttpServer.ts

@@ -83,14 +83,14 @@ class HttpServer {
   /**
    * Starts the server and begins listening on the provided port.
    */
-  public listen = async (port: number) => {
+  public listen = async (port: number, host: string) => {
     return new Promise<void>((resolve, reject) => {
       const listenErrHandler = (err: Error) => {
         reject(err);
       };
 
-      this.server.listen(port, '127.0.0.1').once('listening', () => {
-        this.logger.info(`http server listening on 127.0.0.1:${port}`);
+      this.server.listen(port, host).once('listening', () => {
+        this.logger.info(`http server listening on ${host}:${port}`);
         this.server.removeListener('error', listenErrHandler);
         resolve();
       }).on('error', listenErrHandler);

test/unit/HttpServer.spec.ts

@@ -34,7 +34,7 @@ describe('HttpServer', () => {
 
   before(async () => {
     port = await getUnusedPort();
-    await httpServer.listen(port);
+    await httpServer.listen(port, 'localhost');
   });
 
   it('should receive and parse a raiden resolve request', (done) => {