Retain close callback block
Retain close callback block

gregvis/cordova-plugin-chrome-apps-sockets-udp,MobileChromeApps/cordova-plugin-chrome-apps-sockets-udp,RAMDdFLEET/cordova-plugin-chrome-apps-sockets-udp,gregvis/cordova-plugin-chrome-apps-sockets-udp,MobileChromeApps/cordova-plugin-chrome-apps-sockets-udp,RAMDdFLEET/cordova-plugin-chrome-apps-sockets-udp