如何获取本地网络上所有设备的名称和ip? [英] How to get the names and ips of all devices on my local network?
问题描述
我的目标是列出本地网络上所有设备的名称和ips.
My goal is to list the names and ips of all the devices on the local network.
列出所有计算机名称iPhone上的本地网络与该帖子类似，但未得到答复.
list all the computer names on a local network on iPhone similar to this post, but it wasn't answered.
我已经研究了Apple Bonjour，但我认为这不是我所需要的.它不会显示网络上的所有设备.
I've looked into Apples Bonjour and don't think that's what I need. It doesn't show all the devices on network.
我也尝试了下面的代码，但输出异常(如下).
I've also tried the code below, but I get weird output (below).
int sock;
struct ifconf ifconf;
struct ifreq ifreq[30];
int interfaces;
int i;
// Create a socket or return an error.
sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock < 0)
diep("socket");
// Point ifconf's ifc_buf to our array of interface ifreqs.
ifconf.ifc_buf = (char *) ifreq;
// Set ifconf's ifc_len to the length of our array of interface ifreqs.
ifconf.ifc_len = sizeof ifreq;
// Populate ifconf.ifc_buf (ifreq) with a list of interface names and addresses.
if (ioctl(sock, SIOCGIFCONF, &ifconf) == -1)
diep("ioctl");
// Divide the length of the interface list by the size of each entry.
// This gives us the number of interfaces on the system.
interfaces = ifconf.ifc_len / sizeof(ifreq[0]);
// Print a heading that includes the total # of interfaces.
printf("IF(%d)\tIP\n", interfaces);
// Loop through the array of interfaces, printing each one's name and IP.
for (i = 0; i < interfaces; i++) {
char ip[INET_ADDRSTRLEN];
struct sockaddr_in *address = (struct sockaddr_in *) &ifreq[i].ifr_addr;
// Convert the binary IP address into a readable string.
if (!inet_ntop(AF_INET, &address->sin_addr, ip, sizeof(ip)))
diep("inet_ntop");
printf("FOUND: %s\t%s\n", ifreq[i].ifr_name, ip);
}
close(sock);
这是输出，我无法理解.
This is the output, which I can't really make sense of.
FOUND: lo0 24.3.0.0
FOUND: 28.30.0.0
FOUND: 0.0.0.0
FOUND: 0.0.0.0
FOUND: 0.0.0.1
FOUND: ip0 112.100.112.95
FOUND: pdp_ip1 255.7.0.0
FOUND: 20.18.4.0
FOUND: ip2 0.0.0.0
FOUND: ap1\256\372\272J\221\253 0.0.0.0
FOUND: 105.112.50.0
FOUND: 254.74.145.171
FOUND: ip2 0.0.0.0
FOUND: ip2 101.110.49.142
FOUND: awdl0 6.5.6.0
FOUND: \273Y\311 28.30.0.0
我想看到类似这样的输出:
I'd like to see output something like this:
My-Mac 192.168.0.21
My-iPad 192.168.0.22
Mum's iPhone 192.168.0.23
使用Objective-C或C ++的解决方案将很有用.谢谢.
A solution in either Objective-C or C++ would be useful. Thanks.
推荐答案
只需再次挖这个项目...这是我在@PRSingh请求时共享代码的尝试...希望能有所帮助.
Just dug up this project again...and this is my attempt at sharing the code as @PRSingh requested...hope it helps.
在我的.h中定义
NSNetServiceBrowser *serviceBrowser;
NSNetService *service;
NSMutableArray* snames;
NSMutableArray* sips;
UIActivityIndicatorView* spinner;
在我的.m
#pragma mark - NSNetServiceDelegate Methods
- (void)netServiceWillResolve:(NSNetService *)sender {
NSLog(@"netServiceWillResolve");
serviceBrowser = [[NSNetServiceBrowser alloc] init];
if(!serviceBrowser) {
NSLog(@"The NSNetServiceBrowser couldn't be allocated and initialized.");
}
serviceBrowser.delegate = self;
[serviceBrowser searchForServicesOfType:@"_type._tcp." inDomain:@"local."];
}
- (void)netServiceWillPublish:(NSNetService *)netService
{
NSLog(@"netServiceWillPublish");
}
- (void)netServiceDidPublish:(NSNetService *)sender {
NSLog(@"netServiceDidPublish");
}
- (void)netService:(NSNetService *)sender didNotPublish:(NSDictionary *)errorDict {
NSLog(@"didNotPublish");
}
- (void)netServiceDidResolveAddress:(NSNetService *)netService {
NSLog(@"netServiceDidResolveAddress");
for (NSData* data in [netService addresses]) {
char addressBuffer[100];
struct sockaddr_in* socketAddress = (struct sockaddr_in*) [data bytes];
int sockFamily = socketAddress->sin_family;
if (sockFamily == AF_INET /*|| sockFamily == AF_INET6*/) {
const char* addressStr = inet_ntop(sockFamily,
&(socketAddress->sin_addr), addressBuffer,
sizeof(addressBuffer));
// int port = ntohs(socketAddress->sin_port);
if (addressStr){
if(![sips containsObject:[NSString stringWithFormat:@"%s",addressStr]]){
[snames addObject:netService.name];
[sips addObject:[NSString stringWithFormat:@"%s",addressStr]];
[self.tableView reloadSections:[NSIndexSet indexSetWithIndex:0] withRowAnimation:UITableViewRowAnimationFade];
}
}
}
}
}
- (void)netService:(NSNetService *)sender didNotResolve:(NSDictionary *)errorDict {
NSLog(@"didNotResolve: %@",errorDict);
}
- (void)netService:(NSNetService *)sender didUpdateTXTRecordData:(NSData *)data {
NSLog(@"didUpdateTXTRecordData");
}
- (void)netServiceDidStop:(NSNetService *)netService {
NSLog(@"netServiceDidStop");
}
#pragma mark - NSNetServiceBrowserDelegate Methods
- (void)netServiceBrowser:(NSNetServiceBrowser *)netServiceBrowser didFindService:(NSNetService *)netService moreComing:(BOOL)moreServicesComing {
NSLog(@"didFindService: %@ lenght:%d",netService.name,[netService.name length]);
[services addObject:netService];
}
- (void)netServiceBrowser:(NSNetServiceBrowser *)netServiceBrowser didRemoveService:(NSNetService *)netService moreComing:(BOOL)moreServicesComing {
[services removeObject:netService];
[netService stop];
int index = [snames indexOfObject:netService.name];
[snames removeObjectAtIndex:index];
[sips removeObjectAtIndex:index];
[self.tableView reloadSections:[NSIndexSet indexSetWithIndex:0] withRowAnimation:UITableViewRowAnimationFade];
NSLog(@"didRemoveService");
}
要使其正常工作，我相信网络上的所有设备都必须运行"_type_.tcp"(或您给它的名字)的类型"的bonjour.您可以使用该类型，仅查看某些服务类型上您的本地网络上已经有哪些设备( https://developer.apple.com/library/mac/qa/qa1312/_index.html ).
For this to work I believe that all devices on the network need to be running bonjour with a 'type' of '_type_.tcp' (or what ever name you give it). You can play around with the type just to see what devices on your local network are already on certain service types (https://developer.apple.com/library/mac/qa/qa1312/_index.html).
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