[iOS 开发问题解决]kCFStreamNetworkServiceTypeVoIP' is deprecated

由于公司使用是socket连接，且三方socket框架 优秀的框架暂时只了解AsyncSocket。但是现在苹果已经废弃了kCFStreamNetworkServiceTypeVoIP；

提出警告  kCFStreamNetworkServiceTypeVoIP' is deprecated: first deprecated in iOS 9.0 - use PushKit for VoIP control purposes

所以根据提示，只需要 导入 

#import <PushKit/PushKit.h>

.......

kCFStreamNetworkServiceTypeVoIP 再改为 kCFStreamNetworkServiceTypeVoIP 就OK：

r1 = CFReadStreamSetProperty(readStream,kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);

r2 = CFWriteStreamSetProperty(writeStream,kCFStreamNetworkServiceType, PKPushTypeVoIP);