从iPhone上传一个大的视频到Web服务器 [英] Uploading a large video from iphone to web server

问题描述

我正在使用 NSInputStream 来获取文件视频块，我在每次遍历

 时创建一个请求（POST） - （void）流：（NSStream *）stream handleEvent：（NSStreamEvent）eventCode 
  

方法读数据作为参数传递。

这里是我用来获取数据块的代码

   - （无效）流：（NSStream *）流的handleEvent：（NSStreamEvent）EVENTCODE 
 {
开关（EVENTCODE）
 {
情况下NSStreamEventHasBytesAvailable： 
 {
 NSMutableData * dataSlice; 
 
 uint8_t buf [1048576]; 
 unsigned int len = 0; 
 len = [（NSInputStream *）stream read：buf maxLength：1048576]; 
 if（len）
 {
 dataSlice = [NSMutableData dataWithBytes：（const void *）buf length：len]; 
 
 
的NSMutableDictionary * PARAMS = [的NSMutableDictionary dictionaryWithObjectsAndKeys：folderNameForUpload，kFolderName，
 @ abcd.MOV，kFileName，
 @ MOV，kFileType，
 nil]; 
 MKNetworkOperation * op = [self.networkEngine operationWithPath：@upload.phpparams：params httpMethod：@POST]; 
 
 [addData：dataSlice forKey：@file
 mimeType：@image / mov
 fileName：@abcd]; 
 
 [op onCompletion：^（MKNetworkOperation * completedOperation）{
 
} onError：^（NSError * error）{
 
}]; 
 
 [[WebRequest sharedInstance] .networkEngine enqueueOperation：op]; 
 
 
} 
 else 
 {
 NSLog（@NO MORE BUFFER！）; 
} 
 break; 
} 
 
 
 case NSStreamEventEndEncountered：
 {
 [stream close]; 
 [stream removeFromRunLoop：[NSRunLoop currentRunLoop] 
 forMode：NSDefaultRunLoopMode]; 
 [小溪释放]; 
 stream = nil; 
 break; 
 
 
 
 
 
 
它将数据发送给服务器，我能够写入文件块。但是，问题是，如果有多个块，文件将被损坏，我无法打开视频文件。 
 
 
 
我检查了服务器和客户端上的文件大小，两者完全相同。
 
 
 
以下是php脚本，我用来合并视频文件块。
  $ tmp_file = $ _FILES ['file'] ['tmp_name ]; 
 
 $ write_handle = fopen（$ fileURL，ab +）; 
 $ read_handle = fopen（$ tmp_file，rb）; 
 
 $ contents = fread（$ read_handle，filesize（$ tmp_file））; 
 fwrite（$ write_handle，$ contents）; 
 
 fclose（$ write_handle）; 
 fclose（$ read_handle）; 
  
我在这做错了什么？请帮忙！
 
 
我被困在这个问题!! 
 
 
在此先感谢，
 
 
 
 Suraj 
解决方案
实际上，我是在同一时间发送不同的视频块。问题出现了，因为后来的视频块在第一块视频之前到达了服务器。  
 
 
我解决了这个问题，只有在第一个数据块到达web服务器并在客户端获得响应后才发送第二个数据块。 $ b
I'm trying to upload a large video from iphone to a web server that has php script.

I'm using NSInputStream to get file video chunks and I'm creating a request(POST) on each traversal of the
- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)eventCode
method, with the read data passed as parameter.

Here is the code I'm using to get chunks of data
- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)eventCode 
{
switch(eventCode) 
{
    case NSStreamEventHasBytesAvailable:
    {
        NSMutableData *dataSlice;

        uint8_t buf[1048576];
        unsigned int len = 0;
        len = [(NSInputStream *)stream read:buf maxLength:1048576];
        if(len) 
        {
            dataSlice = [NSMutableData dataWithBytes:(const void *)buf length:len];


            NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:folderNameForUpload, kFolderName,
                                           @"abcd.MOV", kFileName,
                                           @"MOV", kFileType,
                                           nil];
            MKNetworkOperation *op = [self.networkEngine operationWithPath:@"upload.php" params:params httpMethod:@"POST"];

            [op addData:dataSlice forKey: @"file"
                             mimeType: @"image/mov"
                             fileName: @"abcd"];

            [op onCompletion:^(MKNetworkOperation *completedOperation) {

            } onError:^(NSError *error) {

            }];

            [[WebRequest sharedInstance].networkEngine enqueueOperation: op];


        }
        else 
        {
            NSLog(@"NO MORE BUFFER!");
        }
        break;
    }


    case NSStreamEventEndEncountered:
    {
        [stream close];
        [stream removeFromRunLoop:[NSRunLoop currentRunLoop]
                          forMode:NSDefaultRunLoopMode];
        [stream release];
        stream = nil;
        break;
    }
}
}
It is sending the data to the server, and I'm able to  write the chunks into a file. But, the problem is that, if there are more than one chunk, the file will become corrupted and I'm not able to open the video file. 

I checked the file size on both server and client, and both are exactly same.

Below is the php script, I'm using to merge video file chunks.
        $tmp_file = $_FILES['file']['tmp_name'];

        $write_handle = fopen($fileURL, "ab+");
        $read_handle = fopen($tmp_file, "rb");

        $contents = fread($read_handle, filesize($tmp_file));
        fwrite($write_handle, $contents);

        fclose($write_handle);
        fclose($read_handle);
What Am I doing wrong here?, Please help!

I'm stuck over this problem!!

Thanks in Advance,

Suraj
解决方案
I got the problem myself guys. Actually, I was sending different chunks of video at the same time. And the problem was arising because the later chunks of video reached server before the first chunk of video. 

I solved the problem by sending second chunk of video only after the first chunk is reached web server and the response is got at the client side.

                        
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