我试图检查设备的可达性上WIFI可达性 - 为本地局域网的IP地址
我从马赫阿里的书“高级IOS4编程”修改后的代码如下
- (BOOL) networkConnected: (NSString *) addr {
SCNetworkReachabilityFlags flags = 0;
SCNetworkReachabilityRef netReachability;
BOOL retrievedFlags = NO;
// added the "if" and first part of if statement
//
if (hasLeadingNumberInString(addr)) {
struct sockaddr_in the_addr;
memset((void *)&the_addr, 0, sizeof(the_addr));
the_addr.sin_family = AF_INET;
the_addr.sin_port = htons(1001);
const char* server_addr = [addr UTF8String];
unsigned long ip_addr = inet_addr(server_addr);
the_addr.sin_addr.s_addr = ip_addr;
netReachability = SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, (struct sockaddr*)&the_addr);
} else {
netReachability = SCNetworkReachabilityCreateWithName(kCFAllocatorDefault, [addr UTF8String]);
}
if (netReachability) {
retrievedFlags = SCNetworkReachabilityGetFlags(netReachability, &flags);
CFRelease(netReachability);
}
if (!retrievedFlags || !flags) {
return NO;
}
return YES;
}
使用一个IP地址
但它始终没有返回使用IP地址和端口,我知道我可以连接到 (即,如果我跳过此检查,一切顺利的话)
我试图连接到“10.0.0.59”端口1001我可以做
它编译 - 我已经步入(在iPod上),它通过代码的套接字部分运行。
netReachability返回为零。
相关的报头包含有
#import "Reachability.h"
#include <CFNetwork/CFSocketStream.h>
#include <arpa/inet.h>
任何人能发现什么,我做错了什么?
嗨,你有没有找到任何解决方案? – iBhavik 2013-04-25 08:10:31