Form Data Request using NSURLConnection in iOS - ios

Question

I want to make http form post using NSURLConnection in iOS. I have two form fields and one file upload option in an HTML form. When I am doing same thing using NSURLConnection I am not getting a response.
NSString *urlString = #"http://url/test.php";
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:#"POST"];
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data"];
[request addValue:contentType forHTTPHeaderField: #"Content-Type"];
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithString:#"Content-Disposition: form-data; name=\"file\"; filename=\"myphoto.png\"rn"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:#"Content-Type: application/octet-streamrnrn"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:filedata];
[body appendData:[[NSString stringWithFormat:#"&s=YL4e6ouKirNDgCk0xV2HKixt&hw=141246514ytdjadh"] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(#"RETURNED:%#",returnString);
But when I use ASIHTTPRequest and write the following code it's working and I am getting a response.
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:#"http://url/test.php"]];
[request setPostValue:#"YL4e6ouKirNDgCk0xV2HKixt&hw" forKey:#"ssf"];
[request setPostValue:#"141246514ytdjadh" forKey:#"sds"];
[request setData:filedata withFileName:#"myphoto.png" andContentType:#"image/jpeg" forKey:#"file"];
[request startSynchronous];
NSError *error = [request error];
if (!error) {
NSString *response = [request responseString];
NSLog(#"response:%#",response);
}
Can anyone tell me what I'm doing wrong with the NSURLConnection part?

Answer 1

You are not copying the example of that link. In that tutorial, the HTTPBody parameter is supposed to be an instance of NSData, not NSString.
[request setHTTPMethod:#"POST"];
NSString *myString = [NSString stringWithFormat:#"value1=test3&value2=test"];
[request setHTTPBody:[myString dataUsingEncoding:NSUTF8StringEncoding]];

Answer 2

I tried this code for uploading the image and its working. Added boundry.
NSString *urlString = #"URL";
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:#"POST"];
NSString *boundary = #"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#", boundary];
[request addValue:contentType forHTTPHeaderField:#"Content-Type"];
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Disposition: form-data; name=\"userfile\"; filename=\"Test.png\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];

Answer 3

This is working fine for me.
- (void)viewDidLoad
{
[super viewDidLoad];
NSMutableURLRequest *req=[[NSMutableURLRequest alloc]initWithURL:[NSURL URLWithString:#"http:///URL/iinsert.php"]];
NSString *myreqstr=#"name=abhii&address=knrr";
NSData *myreqdata=[NSData dataWithBytes:[myreqstr UTF8String] length:[myreqstr length]];
[req setHTTPMethod:#"POST"];
[ req setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"content-type"];
[ req setHTTPBody: myreqdata ];
//[req setValue:#"abhii" forHTTPHeaderField:#"name"];
//[req setValue:#"kar" forHTTPHeaderField:#"address"];
NSData *data=[NSURLConnection sendSynchronousRequest:req returningResponse:nil error:nil];
NSLog(#"%#",data);
NSString *returnstring=[[NSString alloc]initWithData:data encoding:NSASCIIStringEncoding];
NSLog(#"%#",returnstring);
// Do any additional setup after loading the view, typically from a nib.
}

Answer 4

Try this ....
NSURL *url = [NSURL URLWithString:#"URL"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
NSString *myRequestString =#"Request string";
NSLog(#"%#",myRequestString);
NSData *myRequestData = [ NSData dataWithBytes: [ myRequestString UTF8String ] length: [ myRequestString length ] ];
[ request setHTTPBody: myRequestData ];
NSURLResponse *response;
NSError *err;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
NSString *content = [NSString stringWithUTF8String:[responseData bytes]];

Answer 5

You have several
rn
in the end of your strings. All of them should be
\r\n
More precisely it should be:
[body appendData:[[NSString stringWithString:#"Content-Disposition: form-data; name=\"file\"; filename=\"myphoto.png\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:#"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];