#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<errno.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<unistd.h>
//pch 文件导入
//扫描本地设备 --- 智能家居
-(void)scanLocalDevice
{
NSLog(@"开始扫描本地设备");
setvbuf(stdout, NULL, _IONBF, 0); // 不要缓冲区
fflush(stdout); // 清除缓冲区
int sock = -1;
//AF_INET : #define AF_INET 2 // internetwork: udp, tcp, etc.
// SOCK_DGRAM是基于UDP的，专门用于局域网，基于广播
// 0 : 调用的协议
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
{
return;
}
const int opt = 1;
//设置该套接字为广播类型，
int nb = 0;
nb = setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char *)&opt, sizeof(opt));
struct sockaddr_in addrto;
bzero(&addrto, sizeof(struct sockaddr_in));
addrto.sin_family=AF_INET;
addrto.sin_addr.s_addr=htonl(INADDR_BROADCAST); // //广播地址：255.255.255.255
addrto.sin_port=htons(1025);
int nlen=sizeof(addrto);
while(1)
{
totalSearchTime += 1;
NSLog(@"-->%d",totalSearchTime);
sleep(1);
//从广播地址发送消息
char smsg[] = {"Are You Espressif IOT Smart Device?"};//与硬件约定的响应消息 硬件收到广播之后主动广播回主动发送自己的mac的地址和ip地址
long ret=sendto(sock, smsg, strlen(smsg), 0, (struct sockaddr*)&addrto, nlen);
if(ret<0){
}
else{
socklen_t size;
char buf[MAXDATASIZE];
memset(buf, 0, MAXDATASIZE);
recvfrom(sock,buf,MAXDATASIZE,0,(struct sockaddr *)&addrto,&size);
NSString *str = [NSString stringWithFormat:@"%s",buf];
NSArray * arry = [str componentsSeparatedByString:@" "];
NSString *tempstr = arry[1];
NSString *ip = arry[2];
NSRange range = [tempstr rangeOfString:@"."];
range.length = range.location;
range.location = 0;
range.location=range.length+1;
range.length = [tempstr length] - range.location;
NSString *mac = [tempstr substringWithRange:range];
NSArray *arr = [NSArray arrayWithObjects:ip,mac, nil];
NSLog(@"-----------> 扫描到的IP 和 MAC --->IP = %@ Mac ＝ %@",ip,mac);
[ListArray addObject:arr];
if (totalSearchTime == 20) {
totalSearchTime = 0;
[self getEqupmentIP];
break;
}
}
}
}