How to upload a file to web (http) server

[Diem]

I want to upload a file from iphone to a web server. The web server is
just a regular one that can handle upload form or I can code the sever
in anyway that can be used with iphone.

I was trying to use the ULRRequest, but have no clue how to pass the
file content to the request.

Any help? Thanks.

[David Phillip Oster]

Use an NSURLRequest set the request.HTTPMethod to @"POST" set the
request.HTTPBody to an NSData of the file you want to upload (or use
HTTPBodyStream to an NSINputStream Then, handle this server side like
any webfrom.

[David Phillip Oster]

of course I mean NSMutableURLRequest . Pass it to an NSURLConnection
to do the actual transfer.

[Steve Shi]

Hi David,

Thanks for your pointer. but... I would like to know:
Is that a conceptual idea that you have in mind which you believe will work this way or have you already implemented this code successfully and it works without a hitch?

Steve

[Diem]

Thank you. After few more googles, I got it done. Here is the snippet
for reference

NSURL *cgiUrl = [NSURL URLWithString:@"http://myserver.com"];
NSMutableURLRequest *postRequest = [NSMutableURLRequest
requestWithURL:cgiUrl];

//adding header information:
[postRequest setHTTPMethod:@"POST"];

NSString *stringBoundary = [NSString
stringWithString:@"0xKhTmLbOuNdArY"];
NSString *contentType = [NSString stringWithFormat:@"multipart/form-
data; boundary=%@",stringBoundary];
[postRequest addValue:contentType forHTTPHeaderField: @"Content-
Type"];


//setting up the body:
NSMutableData *postBody = [NSMutableData data];
[postBody appendData:[[NSString stringWithFormat:@"--%@\r
\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"Content-
Disposition: form-data; name=\"uploadFile\"; filename=\"%@\"\r
\n",filename] dataUsingEncoding:NSUTF8StringEncoding]];
//[postBody appendData:[[NSString stringWithString:@"Content-Type:
application/octet-stream\r\n\r\n"]
dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[@"Content-Type: image/jpeg\r\n\r\n"
dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:imageData];
[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r
\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postRequest setHTTPBody:postBody];

NSHTTPURLResponse *theResponse = nil;
NSError *theError = nil;
NSString* ret =nil;

NSData *theResponseData = [NSURLConnection
sendSynchronousRequest:postRequest returningResponse:&theResponse
error:&theError];
if (theResponseData == nil || [theResponse statusCode]!=200)
{
return nil;
} else
{
ret = [[NSString alloc] initWithData:theResponseData
encoding:NSUTF8StringEncoding];

}


On Apr 12, 10:56 am, "Steve Shi" <stevesh...@gmail.com> wrote:
> Hi David,
>
> Thanks for your pointer. but... I would like to know:
> Is that a conceptual idea that you have in mind which you believe will work
> this way or have you already implemented this code successfully and it works
> without a hitch?
>
> Steve
>
> On Fri, Apr 11, 2008 at 3:57 AM, David Phillip Oster <
>

[Steve Shi]

Hi ,

 

This uploading code works fine. Thanks for providing it.

 

Steve