wifi文件传输

步骤：

1.下载CocoaHTTPServer
2.解压后，将CocoaHTTPServer-master目录下的Core导入工程。
3.打开Samples/SimpleFileUploadServer，将其中的MyHTTPConnection类文件、web文件夹导入工程。
4.打开Vendor，将其中的CocoaAsyncSocket、CocoaLumberjack文件夹导入。
所有要导入的文件如下图所示：注意，其中的HYBIPHelper为获取本地ip的工具类，不是必要的，请忽视。

5.打开工程，打开MyHTTPConnection.m，根据标记#pragma mark multipart form data parser delegate跳转或者直接找到139行，- (void) processStartOfPartWithHeader:(MultipartMessageHeader*) header方法，将其中filePath的值修改为iOS的某个目录，这个路径是上传的文件存储的路径，

我们可以已Caches为例：

//    NSString* uploadDirPath = [[config documentRoot] stringByAppendingPathComponent:@"upload"];
    NSString *uploadDirPath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];

6.在适当的地方配置server启动，这里在ViewController中操作：

#import "ViewController.h"
#import "HTTPServer.h"
#import "DDLog.h"
#import "DDTTYLogger.h"
#import "MyHTTPConnection.h"
// 获取IP地址
#include <arpa/inet.h>
#include <ifaddrs.h>@interface ViewController (){
    HTTPServer *httpServer;
}@end@implementation ViewController- (void)viewDidLoad {
    [super viewDidLoad];    httpServer = [[HTTPServer alloc] init];
    [httpServer setType:@"_http._tcp."];
    // webPath是server搜寻HTML等文件的路径
    NSString *webPath = [[NSBundle mainBundle] resourcePath];
    [httpServer setDocumentRoot:webPath];
    [httpServer setConnectionClass:[MyHTTPConnection class]];    NSError *err;
    if ([httpServer start:&err]) {
        NSLog(@"port %hu",[httpServer listeningPort]);
    }else{
        NSLog(@"%@",err);
    }    // 获取局域网IP地址
    [self getIpAddresses];}// 获取局域网IP地址
- (NSString *)getIpAddresses {
    NSString *address = @"error";
    struct ifaddrs *interfaces = NULL;
    struct ifaddrs *temp_addr = NULL;
    int success = ;
    // retrieve the current interfaces - returns 0 on success
    success = getifaddrs(&interfaces);
    if (success == )
    {
        // 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);    NSLog(@"%@", address);    return address;
}// 查询手机里面是否已经导入文件成功
- (IBAction)clicked {    NSFileManager *fileManager=[NSFileManager defaultManager];
    NSArray *pathcaches = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
    NSString* cacheDirectory = [pathcaches objectAtIndex:];
    if ([fileManager fileExistsAtPath:cacheDirectory]) {
        NSArray *childerFiles=[fileManager subpathsAtPath:cacheDirectory];
        for (NSString *fileName in childerFiles) {
            // 文件名(本地文件视频名),用于界面展示
            NSLog(@"fileName名  %@", fileName);
        }
    }}@end