iPhone transfer files to the server

I think the iPhone client to upload files to the server.
web service is the axis (soap), the corresponding code:

 
public class FileService {
public String upload (DataHandler handler, String fileName) {
A series of operations 
 / / save file} 
} 

Fragment corresponding wsdl:

On the client, simply type parameter passing is no problem. but because with apachesoap: DataHandler receive attachments (documents), there has not found in objc corresponding data type .
objc code: (from google)

 
NSString * soapMessage = [NSString stringWithFormat: 
@ " \ N" 
" "
" \ N" 
"" 
"% @ " 
"% @ " 
"" 
" \ n" 
"", @ "aaaadd", @ "aa.txt"]; 
NSLog (@ "String call webserivce is:% @", soapMessage); 
Path / / send the request to the 
NSString * msgLength = [NSString stringWithFormat: @ "% d", [soapMessage length]]; 
NSURL * url = [NSURL URLWithString: @ "http://10.188.96.27:8080/AudioService/services/FileService?wsdl"]; 
NSMutableURLRequest * urlRequest = [NSMutableURLRequest requestWithURL: url]; 

/ / The following request for information must be added before the property is a four sentences, 
[UrlRequest addValue: @ "text / xml; charset = utf-8" forHTTPHeaderField: @ "Content-Type"]; 
[UrlRequest addValue: @ "http://10.188.96.27:8080/AudioService/services/FileService?wsdl" forHTTPHeaderField: @ "SOAPAction"]; 
[UrlRequest addValue: msgLength forHTTPHeaderField: @ "Content-Length"]; 
[UrlRequest setHTTPMethod: @ "POST"]; 
[UrlRequest setHTTPBody: [soapMessage dataUsingEncoding: NSUTF8StringEncoding]]; 

/ / Request 
NSURLConnection * theConnection = [[NSURLConnection alloc] initWithRequest: urlRequest delegate: self]; 
theConnection = nil; 

Ask you, usually in ios processing file uploads is how to do it? I am new to ios, please advise :)
Reply:
Try to use a third-party library ASIHTTPRequest or AFNetworking
Reply:
Anzhe few days just to get this thing probably you can look
http://www.999dh.net/article/iphone_ios_art/30.html
http://www.999dh.net/article/iphone_ios_art/29.html
This article 2 are two different methods for data transmission