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POUploading a large video from iphone to web server
 

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  1. POUploading a large video from iphone to web server
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    <p>I'm trying to upload a large video from iphone to a web server that has php script.</p> <p>I'm using <code>NSInputStream</code> to get file video chunks and I'm creating a request(POST) on each traversal of the</p> <pre><code>- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)eventCode </code></pre> <p>method, with the read data passed as parameter.</p> <p>Here is the code I'm using to get chunks of data</p> <pre><code>- (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; } } } </code></pre> <p>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. </p> <p>I checked the file size on both server and client, and both are exactly same.</p> <p>Below is the php script, I'm using to merge video file chunks.</p> <pre><code> $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); </code></pre> <p>What Am I doing wrong here?, Please help!</p> <p>I'm stuck over this problem!!</p> <p>Thanks in Advance,</p> <p>Suraj</p>
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    1. COHi, Suran. I also want to upload large video in the form of chunks of data from iphone to a web server. How you did this? Do you have any tutorial or any working sample code?
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    2. COHi iOSDev, the code, that I've posted above is a working code to post large videos to server. Use an input stream, read video data as data slices and send them to server using NSURLConnection. At the server, write a php file to merge the chunks.
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