set up proxy for android emulator

c:\Users\lenger\AppData\Local\Android\Sdk\tools>emulator.exe -http-proxy ip:port -avd Nexus_5X_API_23

c:\Users\lenger\AppData\Local\Android\Sdk\tools>bin\avdmanager.bat list avd

    Name: Nexus_5X_API_23   Device: Nexus 5X (Google)     Path: C:\Users\lenger\.android\avd\Nexus_5X_API_23.avd   Target: Google APIs (Google Inc.)           Based on: Android 6.0 (Marshmallow) Tag/ABI: google_apis/x86_64     Skin: nexus_5x   Sdcard: 100M ---------     Name: Nexus_5X_API_23_2   Device: Nexus 5X (Google)     Path: C:\Users\lenger\.android\avd\Nexus_5X_API_23_2.avd   Target: Google APIs (Google Inc.)           Based on: Android 6.0 (Marshmallow) Tag/ABI: google_apis/armeabi-v7a     Skin: nexus_5x   Sdcard: 100M ---------     Name: Nexus_5X_API_27_x86   Device: Nexus 5X (Google)     Path: C:\Users\lenger\.android\avd\Nexus_5X_API_27_x86.avd   Target: Google APIs (Google Inc.)           Based on: Android API 27 Tag/ABI: google_apis/x86     Skin: nexus_5x   Sdcard: 800M Snapshot: no