使用iOS设备查找LAN网络中存在的设备(IP摄像头)IP地址?

时间:2017-09-12 09:15:55

标签: ios iphone networking ip lan

我正在研究项目,它找到了在LAN网络中连接的摄像机IP地址,我正在使用局域网搜索iOS来查找摄像机,它可以工作但有时相机已经自我分配到( 169.254.164.XXX)默认IP地址。局域网搜索无法找到它。如何在LAN网络中找到所有相机,即使相机处于默认网络中?

1 个答案:

答案 0 :(得分:0)

这将返回本地IP地址:

- (NSString *)getIPAddress {
        NSString *address = @"error";
        struct ifaddrs *interfaces = NULL;
        struct ifaddrs *temp_addr = NULL;
        int success = 0;
        // retrieve the current interfaces - returns 0 on success
        success = getifaddrs(&interfaces);
        if (success == 0) {
            // Loop through linked list of interfaces
            temp_addr = interfaces;
            while(temp_addr != NULL) {
                if(temp_addr->ifa_addr->sa_family == 2) {
                    // Check if interface is end 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;
            }
        }
        // Free memory
        freeifaddrs(interfaces);
        return address;
    }