//
//  LxGetCurrentIp.m
//  Ifish
//
//  Created by imac on 16/9/12.
//  Copyright © 2016年 lianxiang. All rights reserved.
//

#import "LxGetCurrentIp.h"
#include <ifaddrs.h>
#include <arpa/inet.h>

@implementation LxGetCurrentIp
+(NSString *)currentIPAddress
{
    NSString *address = @"an error occurred when obtaining ip address";
    struct ifaddrs *interfaces = NULL;
    struct ifaddrs *temp_addr = NULL;
     int success = 0;
    
     success = getifaddrs(&interfaces);
    if (success == 0) { // 0 表示获取成功
        
        temp_addr = interfaces;
        while (temp_addr != NULL) {
            if( temp_addr->ifa_addr->sa_family == AF_INET) {
                // Check if interface is en0 which is the wifi connection on the iPhone
                if ([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"]) {
                    // Get NSString from C String
                    address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
                }
            }
            
            temp_addr = temp_addr->ifa_next;
        }
    }
    
    freeifaddrs(interfaces);
    
    NSLog(@"手机的IP是：%@", address);
    
    return address;
    
    
}
@end