Re: File upload with NSURLRequest fails
Re: File upload with NSURLRequest fails
- Subject: Re: File upload with NSURLRequest fails
- From: Ben Lachman <email@hidden>
- Date: Fri, 14 Mar 2008 02:43:32 -0400
I do this with a perl script on the back end. My experience was that
its was more cajoling the perl script into working that the PHP side,
but that may be because I'm not much of a perl wizard (maybe only
level 8 or so :-). I found it was important to declare a filename if
you're transferring data like this.
Here is my code:
NSMutableURLRequest *postRequest = [NSMutableURLRequest
requestWithURL:aURL cachePolicy:NSURLRequestReloadIgnoringCacheData
timeoutInterval:30.0];
NSString *boundary = @"----Boundary+AaB03x";
[postRequest setHTTPMethod:@"POST"];
[postRequest addValue:[aURL] absoluteString]
forHTTPHeaderField:@"Referer"];
[postRequest setValue:[NSString stringWithFormat:@"multipart/form-
data; boundary=%@", boundary, nil] forHTTPHeaderField:@"Content-Type"];
NSEnumerator *dictionaryEnumerator = [postDictionary keyEnumerator];
NSString *currentKey = nil;
NSMutableData *multipartData = [NSMutableData data];
while( (currentKey = [dictionaryEnumerator nextObject]) ) {
[multipartData appendData:[[NSString stringWithFormat:@"\r\n--%@\r
\n", boundary] dataUsingEncoding:NSASCIIStringEncoding
allowLossyConversion:NO]];
id currentValue = [postDictionary objectForKey:currentKey];
if( [currentValue isKindOfClass:[NSData class]] && [NSImageRep
imageRepClassForData:currentValue] != nil ) {
[multipartData appendData:[[NSString stringWithFormat:@"Content-
Disposition: form-data; name=\"%@\"; filename=\"image.jp2\"\r\n",
currentKey] dataUsingEncoding:NSASCIIStringEncoding]];
[multipartData appendData:[@"Content-Type: image/jp2\r\n"
dataUsingEncoding:NSASCIIStringEncoding]];
[multipartData appendData:[@"Content-Transfer-Encoding: binary\r\n\r
\n" dataUsingEncoding:NSASCIIStringEncoding]];
[multipartData appendData:currentValue];
}
}
[multipartData appendData:[[NSString stringWithFormat:@"\r\n--%@--\r
\n", boundary] dataUsingEncoding:NSASCIIStringEncoding
allowLossyConversion:NO]];
[postRequest setHTTPBody:multipartData];
Hope this helps,
->Ben
--
Ben Lachman
Acacia Tree Software
http://acaciatreesoftware.com
email@hidden
740.590.0009
On Mar 13, 2008, at 4:50 PM, Tom Harrington wrote:
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@hidden
AIM: atomicbird1
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