关于ios 网络连接的问题

我在做一个聊天app，

从wifi切换到蜂窝数据，网络正常可以访问到服务器，

从蜂窝切换到wifi的时候也正常可以访问到服务器，

但当使用蜂窝数据并启用3G的话，会出现长时间连不到服务器，最终也能连接上（我想切换后短时间内就能连接上， 因为时间过长给用户的感觉不好。）

下面是输出网络的切换3G后的网络状态，

SCNetworkReachabilityFlags reachabilityFlags = 0;

BOOL reachbilityState = SCNetworkReachabilityGetFlags(reachability, &reachabilityFlags);

    NSLog(@"reachbilityState %i",reachbilityState);

    NSLog(@"reachabilityFlags  %i",reachabilityFlags);

    NSLog(@"kSCNetworkReachabilityFlagsReachable %i",kSCNetworkReachabilityFlagsReachable);

    NSLog(@"kSCNetworkReachabilityFlagsTransientConnection %i",kSCNetworkReachabilityFlagsTransientConnection);

    NSLog(@"kSCNetworkReachabilityFlagsConnectionRequired %i",kSCNetworkReachabilityFlagsConnectionRequired);

    NSLog(@"kSCNetworkReachabilityFlagsConnectionOnTraffic %i",kSCNetworkReachabilityFlagsConnectionOnTraffic);

    NSLog(@"kSCNetworkReachabilityFlagsInterventionRequired %i",kSCNetworkReachabilityFlagsInterventionRequired);

    NSLog(@"kSCNetworkReachabilityFlagsConnectionOnDemand %i",kSCNetworkReachabilityFlagsConnectionOnDemand);

    NSLog(@"kSCNetworkReachabilityFlagsIsLocalAddress %i",kSCNetworkReachabilityFlagsIsLocalAddress);

    NSLog(@"kSCNetworkReachabilityFlagsIsDirect %i",kSCNetworkReachabilityFlagsIsDirect);

    NSLog(@"kSCNetworkReachabilityFlagsIsWWAN %i",kSCNetworkReachabilityFlagsIsWWAN);

reachbilityState 1

2013-04-25 17:15:04.047 reachabilityFlags 262147

2013-04-25 17:15:04.048 kSCNetworkReachabilityFlagsReachable 2

2013-04-25 17:15:04.049 kSCNetworkReachabilityFlagsTransientConnection 1

2013-04-25 17:15:04.051 kSCNetworkReachabilityFlagsConnectionRequired 4

2013-04-25 17:15:04.052 kSCNetworkReachabilityFlagsConnectionOnTraffic 8

2013-04-25 17:15:04.057 kSCNetworkReachabilityFlagsInterventionRequired 16

2013-04-25 17:15:04.058 kSCNetworkReachabilityFlagsConnectionOnDemand 32

2013-04-25 17:15:04.059 kSCNetworkReachabilityFlagsIsLocalAddress 65536

2013-04-25 17:15:04.061 kSCNetworkReachabilityFlagsIsDirect 131072

2013-04-25 17:15:04.062 kSCNetworkReachabilityFlagsIsWWAN 262144

请问 状态262147 是什么状态，我该怎么做才能让app更快的连接上服务器。 谢谢