如何使用IOS实现WIFI传输
问题
业务场景上存在需要将手机里的文件、图片传递给其他的设备,
不仅仅局限于传书、资料啥的都有可能传递
方案
最base的方法:设备之间加个云,设备上传资料到云,云同步资料到各个设备,适用于多设备之间,这个没讲的必要
如果是两设备之间,忽略服务器,怎么搞?联想到图书App中的WiFi传书,貌似没云端概念的,怎么做到的?
上菜
采用框架GCDWebServer,通过CocoaPods引入
pod "GCDWebServer", "~> 3.0"
设置本地接收目录,初始化Server并启动
override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) if let filepath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first as NSString? { let path = filepath.appendingPathComponent("transfer") if !FileManager.default.fileExists(atPath: path) { do { try FileManager.default.createDirectory(atPath: path, withIntermediateDirectories: false, attributes: nil) } catch { print(error) } } webServer = GCDWebUploader(uploadDirectory: path) webServer?.delegate = self webServer?.allowHiddenItems = true webServer?.allowedFileExtensions = ["doc", "docx", "xls", "xlsx", "txt", "pdf", "jpeg", "jpg"] webServer?.title = "善斋工具" webServer?.prologue = "欢饮使用善斋工具的WIFI管理平台" webServer?.epilogue = "善斋书屋制作" if webServer?.start() == true, let address = IPHelper.deviceIPAdress(), address.count > 0, let port = webServer?.port { ipLb.text = "1.确保设备在同一局域网 \n2.上传时勿关闭该页面 \n3.请网页中输入该地址 \nhttp://\(address):\(port)/" } else { ipLb.text = "GCDWebServer not running!" } } }
局域网内获取本机的ip地址,并设置其他设备访问链接
#import <ifaddrs.h> #import <arpa/inet.h> #import <net/if.h> @implementation IPHelper + (NSString *)deviceIPAdress { NSString *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); return address; } #define IOS_CELLULAR @"pdp_ip0" #define IOS_WIFI @"en0" #define IOS_VPN @"utun0" #define IP_ADDR_IPv4 @"ipv4" #define IP_ADDR_IPv6 @"ipv6" #pragma mark - 获取设备当前网络IP地址 + (NSString *)getIPAddress:(BOOL)preferIPv4 { NSArray *searchArray = preferIPv4 ? @[ IOS_VPN @"/" IP_ADDR_IPv4, IOS_VPN @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6 ] : @[ IOS_VPN @"/" IP_ADDR_IPv6, IOS_VPN @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4 ] ; NSDictionary *addresses = [self getIPAddresses]; NSLog(@"addresses: %@", addresses); __block NSString *address; [searchArray enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop) { address = addresses[key]; //筛选出IP地址格式 if([self isValidatIP:address]) *stop = YES; } ]; return address ? address : @"0.0.0.0"; } + (BOOL)isValidatIP:(NSString *)ipAddress { if (ipAddress.length == 0) { return NO; } NSString *urlRegEx = @"^([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\." "([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\." "([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\." "([01]?\\d\\d?|2[0-4]\\d|25[0-5])$"; NSError *error; NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:urlRegEx options:0 error:&error]; if (regex != nil) { NSTextCheckingResult *firstMatch=[regex firstMatchInString:ipAddress options:0 range:NSMakeRange(0, [ipAddress length])]; if (firstMatch) { NSRange resultRange = [firstMatch rangeAtIndex:0]; NSString *result=[ipAddress substringWithRange:resultRange]; //输出结果 NSLog(@"%@",result); return YES; } } return NO; } + (NSDictionary *)getIPAddresses { NSMutableDictionary *addresses = [NSMutableDictionary dictionaryWithCapacity:8]; // retrieve the current interfaces - returns 0 on success struct ifaddrs *interfaces; if(!getifaddrs(&interfaces)) { // Loop through linked list of interfaces struct ifaddrs *interface; for(interface=interfaces; interface; interface=interface->ifa_next) { if(!(interface->ifa_flags & IFF_UP) /* || (interface->ifa_flags & IFF_LOOPBACK) */ ) { continue; // deeply nested code harder to read } const struct sockaddr_in *addr = (const struct sockaddr_in*)interface->ifa_addr; char addrBuf[ MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN) ]; if(addr && (addr->sin_family==AF_INET || addr->sin_family==AF_INET6)) { NSString *name = [NSString stringWithUTF8String:interface->ifa_name]; NSString *type; if(addr->sin_family == AF_INET) { if(inet_ntop(AF_INET, &addr->sin_addr, addrBuf, INET_ADDRSTRLEN)) { type = IP_ADDR_IPv4; } } else { const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6*)interface->ifa_addr; if(inet_ntop(AF_INET6, &addr6->sin6_addr, addrBuf, INET6_ADDRSTRLEN)) { type = IP_ADDR_IPv6; } } if(type) { NSString *key = [NSString stringWithFormat:@"%@/%@", name, type]; addresses[key] = [NSString stringWithUTF8String:addrBuf]; } } } // Free memory freeifaddrs(interfaces); } return [addresses count] ? addresses : nil; }
在其他设备中访问该地址即可
let address = IPHelper.deviceIPAdress() let port = webServer?.port http://\(address):\(port)/
备注:
- 确保设备在同一局域网
- 上传时勿关闭该页面
Game Over
局域网中,设备作为server,其他设备作为client,简单的HTTP方式上传文件到server,初始配置的路径即为server接收后存放文件的路径
以上就是如何使用IOS实现WIFI传输的详细内容,更多关于IOS实现WIFI传输的资料请关注海外IDC网其它相关文章!
【文章转自日本多IP服务器 http://www.558idc.com/japzq.html提供,感恩】