緣起
今天用暴風影音看視頻,然后發現它有個功能,wifi傳片,感覺挺有意思,然后就上網查了下相關內容。
原理
使用CocoaHTTPServer框架,在iOS端建立一個本地服務器,只要電腦和手機連入同一熱點或者說網絡,就可以實現通過電腦瀏覽器訪問iOS服務器的頁面,利用POST實現文件的上傳。
實現
1.下載CocoaHTTPServer
2.導入CocoaHTTPServer-master
目錄下的Core文件夾
3.導入Samples/SimpleFileUploadServer
目錄下的MyHTTPConnection
類文件和web
文件夾
導入web文件夾的時候,一定要使用真實的目錄,而不是xcode的虛擬目錄
web文件夾導入.png
4.導入Vendor
目錄下的CocoaAsyncSocket
、CocoaLumberjack
文件夾
5.打開MyHTTPConnection.m
文件,根據標記 #pragma mark multipart form data parser delegate 跳轉或者直接找到139行的 *- (void) processStartOfPartWithHeader:(MultipartMessageHeader ) header 方法,把第151行的uploadDirPath
改為
NSString *uploadDirPath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];
這個路徑是上傳文件的存儲路徑
6.在適當的地方配置server啟動。這里以AppDelegate為例
#import "AppDelegate.h"
#import <ifaddrs.h>
#import <arpa/inet.h>
#import "HTTPServer.h"
#import "DDLog.h"
#import "DDTTYLogger.h"
#import "MyHTTPConnection.h"
@interface AppDelegate ()
@property (nonatomic, strong) HTTPServer * httpServer;
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
_httpServer = [[HTTPServer alloc] init];
[_httpServer setPort:1234];
[_httpServer setType:@"_http._tcp."];
// webPath是server搜尋HTML等文件的路徑
NSString * webPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"web"];
[_httpServer setDocumentRoot:webPath];
[_httpServer setConnectionClass:[MyHTTPConnection class]];
NSError *err;
if ([_httpServer start:&err]) {
NSLog(@"port %hu",[_httpServer listeningPort]);
}else{
NSLog(@"%@",err);
}
NSString *ipStr = [self getIpAddresses];
NSLog(@"ip地址 %@", ipStr);
return YES;
}
- (NSString *)getIpAddresses{
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 == 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;
}
}
// Free memory
freeifaddrs(interfaces);
return address;
}
7.運行后,控制臺會打印出端口號和ip,在電腦端瀏覽器里輸入ip+端口號訪問即可,如果成功的話會看到如下界面:
訪問成功.png
8.如果上傳成功,網頁上會出現上傳的文件名,可以在沙盒里驗證文件是否上傳成功