how to send data to url with POST Method in Xcode - objective-c

Question

I want to send one data with POST method to one url and received answer from that url.
I write this code for send data ("a") to this url ("http://www.test.com/test/msht")
this is my code but not working please guide me how to send data and give answer from url.
-(IBAction)btn_post_clicked:(id)sender{
//if there is a connection going on just cancel it.
[self.connection cancel];
//initialize new mutable data
NSMutableData *data = [[NSMutableData alloc] init];
self.receivedData = data;
[data release];
//initialize url that is going to be fetched.
NSURL *url = [NSURL URLWithString:#"http://www.test.com/test/msht"];
//initialize a request from url
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[url standardizedURL]];
//set http method
[request setHTTPMethod:#"POST"];
//initialize a post data
NSString *postData = [[NSString alloc] initWithString:#"a"];
//set request content type we MUST set this value.
[request setValue:#"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
//set post data of request
[request setHTTPBody:[postData dataUsingEncoding:NSUTF8StringEncoding]];
//initialize a connection from request
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
self.connection = connection;
[connection release];
//start the connection
[connection start];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
[self.receivedData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
NSLog(#"%#" , error);
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
//initialize convert the received data to string with UTF8 encoding
NSString *htmlSTR = [[NSString alloc] initWithData:self.receivedData
encoding:NSUTF8StringEncoding];
NSLog(#"%#" , htmlSTR);
}

Answer 1

My friend your code is wrong!!! you should determine name of post value in post NSString....
you don't send a value only.
you should write this code if get post method name in server is user :
NSString *post = [NSString stringWithFormat:#"user=a"];