How to send request with XML - ios

Question

I want to send XML file to http://api.online-convert.com/queue-insert
I'm using such code:
NSString *urlString = [NSString stringWithFormat:#"http://api.online-convert.com/queue-insert"];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:#"POST"];
//set headers
NSString *contentType = [NSString stringWithFormat:#"text/xml"];
[request addValue:contentType forHTTPHeaderField: #"Content-Type"];
//create the body
NSMutableData *postBody = [NSMutableData data];
[postBody appendData:[[NSString stringWithFormat:#"<queue>"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:#"<apiKey>32423sda..2134</apiKey>"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:#"<targetType>audio</targetType>"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:#"<targetMethod>convert-to-flac</targetMethod>"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:#"<testMode>true</testMode>"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:#"<sourceUrl>http://www.online-convert.com/audio/audio-converter.flac</sourceUrl>"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:#"</queue>"] dataUsingEncoding:NSUTF8StringEncoding]];
//post
[request setHTTPBody:postBody];
//get response
NSHTTPURLResponse* urlResponse = nil;
NSError *error = [[NSError alloc] init];
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error];
NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSLog(#"Response Code: %d", [urlResponse statusCode]);
if ([urlResponse statusCode] >= 200 && [urlResponse statusCode] < 300) {
NSLog(#"Response: %#", result);
}
But I always get error:
<queue-answer>
<status>
<code>8</code>
<message>The XML file is empty</message>
</status>
</queue-answer>
Where is my fault? Please help..

Answer 1

I'm sending XML-file in the following way:
NSString *message = [[NSString alloc] initWithFormat:#"<?xml version=\"1.0\" ?>\n<parameters></parameters>"];
url = [NSURL URLWithString:#"https://site.ru/request"];
request = [NSMutableURLRequest requestWithURL:url];
NSString *msgLength = [NSString stringWithFormat:#"%d",[message length]];
[request addValue:#"application/xml; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
[request addValue:msgLength forHTTPHeaderField:#"Content-Length"];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[message dataUsingEncoding:NSUTF8StringEncoding]];
LOG([NSString stringWithFormat:#"Post message: %#"], message);
[message release];
self.connection = [NSURLConnection connectionWithRequest:request delegate:self];

Answer 2

You probably do not know what you're doing. In the string:
[postBody appendData:[[NSString stringWithFormat:#"<sourceUrl>http://www.online-convert.com/audio/audio-converter.flac</sourceUrl>"] dataUsingEncoding:NSUTF8StringEncoding]];
You are supposed to send the URL to the server where your original file (the file you wish to convert) is located. The link in your code leads to non-existing file.

Answer 3

This piece of code works for me:
- (IBAction)startSOAP:(id)sender
{
NSLog(#"\n{AppDelegate} startSOAP start");
// create the request
NSError **myError;
NSHTTPURLResponse **serverResponse;
NSData *serverData;
NSDictionary *headerFieldsDict = [NSDictionary
dictionaryWithObjectsAndKeys:#"Apple iPhone",#"User- Agent",
#"text/xml; charset=utf-8", #"Content-Type",
#"soapAction",#"SOAP_ACTION",nil];
#try {
// 1) The Request String.
// Note: smsXMLString contains the entire SMS SOAP envelope, without the <? XML declaration command >.
NSString *smsXMLPath = [[NSBundle mainBundle] pathForResource:#"sms" ofType:#"xml"];
self.smsXMLString = [NSString stringWithContentsOfFile:smsXMLPath encoding:NSUTF8StringEncoding error:myError];
// -----------------------
// 2) Create the request.
NSMutableURLRequest *theRequest=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:theServerURL]
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:10.0];
// -----------------------
// 2a) Modify the Request from default 'GET' to 'POST':
[theRequest setHTTPMethod:#"POST"];
// 2b) Modify the Headers:
[theRequest setAllHTTPHeaderFields:headerFieldsDict];
// 2c) Sent the Contents of the Body to the SOAP/XML data:
[theRequest setHTTPBody:[self.smsXMLString dataUsingEncoding:NSUTF8StringEncoding]];
// -----------------------
// 3) Get Synchronous Data:
serverData = [NSURLConnection sendSynchronousRequest:theRequest
returningResponse:serverResponse
error:myError];
// -----------------------
// 4) Convert Synchronous Data into Human-Readable String (Unicode 8) format:
NSString *serverDataString = [[[NSString alloc] initWithData:serverData encoding:NSUTF8StringEncoding] retain];
[[soapResponse layoutManager]replaceTextStorage:[[NSTextStorage alloc] initWithString:serverDataString]];
[serverDataString release];
}
#catch (id e) {
NSLog(#"\n**** {startSOAP} EXCEPTION: %# ****\n",e);
self.statusLine.stringValue = [NSString stringWithFormat:#"*** Exception flagged: %# ***",e];
}
#finally {
NSLog(#"\n{startSoap} end.");
}
}