File upload with NSURLRequest fails

FROM : Tom Harrington
DATE : Thu Mar 13 21:50:40 2008

I'm trying to upload a file with the NSURL* API, but on the server end
the PHP code is unable to decode the $_FILES array.  The PHP code
works fine when posted from an HTML form (and from clients on other
platforms).

Traffic sniffed on the wire looks good as far as I can tell, so what
would be the problem?  The code in question follows.

   NSString *urlString = @"http://server:8080/php/post.php";
   NSURL *url = [NSURL URLWithString:urlString];
   NSString *requestMethod = @"POST";

   NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url];
   [req setHTTPMethod:requestMethod];

   NSString *headerFieldName;
   NSString *headerFieldValue;

   NSString *boundary = @"-----------------------------1234567890";
   
   headerFieldName = @"Content-Type";
   headerFieldValue = [NSString stringWithFormat:@"multipart/form-data;
boundary=%@", boundary];
   [req addValue:headerFieldValue forHTTPHeaderField:headerFieldName];
   
   NSString *phone = @"7195554321";
   NSDate *currentDate = [NSDate date];
   NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init]  autorelease];
   [dateFormatter setDateFormat:@"yyyyMMddHHmmss"];
   NSString *dateString = [dateFormatter stringFromDate:currentDate];
   
   // Will look something like this: form-data; name="file";
filename="7195554321_1_20080311132327_jpg"
   headerFieldValue = [NSString stringWithFormat:@"form-data;
name=\"file\"; filename=\"%@_1_%@_jpg\"", phone, dateString];
   
   NSMutableData *postBody = [NSMutableData data];
   // Add ----boundary
   [postBody appendData:[[NSString stringWithFormat:@"%@\r\n", boundary]
dataUsingEncoding:NSUTF8StringEncoding]];
   // Add form-data with filename
   [postBody appendData:[[NSString
stringWithFormat:@"Content-Disposition: %@\r\n", headerFieldValue]
dataUsingEncoding:NSUTF8StringEncoding]];
   // Add content-type
   [postBody appendData:[[NSString stringWithString:@"Content-Type:
null\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
   // Add image data
   [postBody appendData:imageData];
   // Add ----boundary--
   [postBody appendData:[[NSString stringWithFormat:@"\r\n%@--\r\n",
boundary] dataUsingEncoding:NSUTF8StringEncoding]];
   
   [req setHTTPBody:postBody];

   NSHTTPURLResponse *res = nil;
   NSError *err = nil;
   
   NSData *data = [NSURLConnection sendSynchronousRequest:req
                                        returningResponse:&res
                                                    error:&err];


--
Tom Harrington
<email_removed>
AIM: atomicbird1