iOS HTTP Image Upload to Web Server

uploadToServerUsingImage

    // HTTP method to upload file to web server
    - (void)uploadToServerUsingImage:(NSData *)imageData andFileName:(NSString *)filename {
    // set this to your server's address
    NSString *urlString = @"http://fineuploader.com/demos.html#amazon-demo";
    // set the content type, in this case it needs to be: "Content-Type: image/jpg"
    // Extract 'jpg' or 'png' from the last three characters of 'filename'
    if (([filename length] -3 ) > 0) {
    NSString *contentType = [NSString stringWithFormat:@"Content-Type: image/%@", [filename substringFromIndex:[filename length] - 3]];
    }
     
    // allocate and initialize the mutable URLRequest, set URL and method.
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
    [request setURL:[NSURL URLWithString:urlString]];
    [request setHTTPMethod:@"POST"];
    // define the boundary and newline values
    NSString *boundary = @"uwhQ9Ho7y873Ha";
    NSString *kNewLine = @"\r\n";
    // Set the URLRequest value property for the HTTP Header
    // Set Content-Type as a multi-part form with boundary identifier
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
    [request setValue:contentType forHTTPHeaderField: @"Content-Type"];
    // prepare a mutable data object used to build message body
    NSMutableData *body = [NSMutableData data]
    // set the first boundary
    [body appendData:[[NSString stringWithFormat:@"--%@%@", boundary, kNewLine] dataUsingEncoding:NSUTF8StringEncoding]];
     
    // Set the form type and format
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"%@\"%@", @"uploaded_file", filename, kNewLine] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Type: image/jpg"] dataUsingEncoding:NSUTF8StringEncoding]];
    // Now append the image itself. For some servers, two carriage-return line-feeds are necessary before the image
    [body appendData:[[NSString stringWithFormat:@"%@%@", kNewLine, kNewLine] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:imageData];
    [body appendData:[kNewLine dataUsingEncoding:NSUTF8StringEncoding]];
    // Add the terminating boundary marker & append a newline
    [body appendData:[[NSString stringWithFormat:@"--%@--", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[kNewLine dataUsingEncoding:NSUTF8StringEncoding]];
    // Setting the body of the post to the request.
    [request setHTTPBody:body];
    // TODO: Next three lines are only used for testing using synchronous conn.
    NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
    NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
    NSLog(@"==> sendSyncReq returnString: %@", returnString);
    // You will probably want to replace above 3 lines with asynchronous connection
    // NSURLConnection *connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];
    }