fix(xo-server/xen-servers): handle loosing connection case (#3841)

Fixes #3839

CHANGELOG.md

@@ -15,6 +15,7 @@
 
 - [Self] Display sorted Resource Sets [#3818](https://github.com/vatesfr/xen-orchestra/issues/3818) (PR [#3823](https://github.com/vatesfr/xen-orchestra/pull/3823))
 - [Servers] Correctly report connecting status (PR [#3838](https://github.com/vatesfr/xen-orchestra/pull/3838))
+- [Servers] Fix cannot reconnect to a server after connection has been lost [#3839](https://github.com/vatesfr/xen-orchestra/issues/3839) (PR [#3841](https://github.com/vatesfr/xen-orchestra/pull/3841))
 
 ### Released packages
 

packages/xo-server/src/xo-mixins/xen-servers.js

@@ -375,6 +375,12 @@ export default class {
       xapi.watchEvents()
 
       this.updateXenServer(id, { error: null })::ignoreErrors()
+
+      xapi.once('disconnected', () => {
+        xapi.xo.uninstall()
+        delete this._xapis[server.id]
+        delete this._serverIdsByPool[poolId]
+      })
     } catch (error) {
       delete this._xapis[server.id]
       xapi.disconnect()::ignoreErrors()