fix(xo-server/callProxyMethod): dont use HTTP proxy

CHANGELOG.unreleased.md

@@ -11,6 +11,8 @@
 
 > Users must be able to say: “I had this issue, happy to know it's fixed”
 
+- [Proxy] Don't use configured HTTP proxy to connect to XO proxy
+
 ### Packages to release
 
 > Packages will be released in the order they are here, therefore, they should
@@ -27,3 +29,5 @@
 > - major: if the change breaks compatibility
 >
 > In case of conflict, the highest (lowest in previous list) `$version` wins.
+
+- xo-server patch

packages/xo-server/src/xo-mixins/http.js

@@ -22,6 +22,10 @@ export default class Http {
     this.setHttpProxy(httpProxy)
   }
 
+  // TODO: find a way to decide for which addresses the proxy should be used
+  //
+  // For the moment, use this method only to access external resources (e.g.
+  // patches, upgrades, support tunnel)
   httpRequest(...args) {
     return hrp(
       {

packages/xo-server/src/xo-mixins/proxies.js

@@ -1,5 +1,6 @@
 import cookie from 'cookie'
 import defer from 'golike-defer'
+import hrp from 'http-request-plus'
 import parseSetCookie from 'set-cookie-parser'
 import pumpify from 'pumpify'
 import split2 from 'split2'
@@ -359,7 +360,7 @@ export default class Proxy {
       request.host = assertProxyAddress(proxy, proxy.address)
     }
 
-    const response = await this._app.httpRequest(request)
+    const response = await hrp(request)
 
     const authenticationToken = parseSetCookie(response, {
       map: true,