How to send POST XML from iOS app? - iphone

Question

So, I've ran over and over the web in search for anything about sending XML with POST from iPhone app - no luck so far, none!
I'm using in my app KissXML, which I find very easy and useful when it comes to getting XML out of response - but quite opposite when sending XML to server...
Here is my method for connecting and receiving XML. I tried to put NSString containing simply my XML request into body of POST request, but it doesn't work as planned.
-(void)prepareTransaction{
NSLog(#"FXSecondVC: preparing transaction...");
NSString *login = [[NSUserDefaults standardUserDefaults] stringForKey:#"kUsername"];
NSString *password = [[NSUserDefaults standardUserDefaults] stringForKey:#"kPassword"];
NSString *host = [[NSUserDefaults standardUserDefaults] stringForKey:#"kURLServer"];
NSURL *url = [[NSURL alloc] initWithString:host];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
[httpClient setAuthorizationHeaderWithUsername:login password:password];
[httpClient registerHTTPOperationClass:[AFKissXMLRequestOperation class]];
NSString *xmlString = #"<RootEl xmlns=\"http://some.url/goes/here\">"
"<Element1>12678967.543233</Element1>"
"<Element2>"
"<string xmlns=\"bla.bla/url\">"
"String content</string>"
"<string xmlns=\"bla.bla/url\">"
"String content</string>"
"</Element2>"
"<Element3>true</Element3>"
"<Element4>String content</Element4>"
"<Element5>1999-05-31T11:20:00</Element5>"
"<Element6>true</Element6>"
"</RootEl>";
NSMutableURLRequest *request = [httpClient requestWithMethod:#"POST" path:kServerRequestURL parameters:nil];
[request setHTTPBody:[xmlString dataUsingEncoding:NSUTF8StringEncoding]];
AFKissXMLRequestOperation *operation = [AFKissXMLRequestOperation XMLDocumentRequestOperationWithRequest:request success:^(NSURLRequest *req, NSHTTPURLResponse *resp, DDXMLDocument *XMLDocument){
NSLog(#"[SUCCESS]: XMLDocument: %#", XMLDocument);
}failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, DDXMLDocument *XMLDocument) {
NSLog(#"error parsing: %#", [error localizedDescription]);
}];
[operation start];
}
This is what I'm getting in response:
2012-11-21 19:40:09.884 FXApp[19662:707] FXSecondVC: preparing transaction...
2012-11-21 19:40:10.011 FXApp[19662:707] error parsing: Expected status code in (200-299), got 400
Am I missing something here? I want to use KissXML, because it the simplest way (at least known to me) to use already prepared XML document in successful response, but if solution requires changing framework - don't hesitate. The priority is to get it working.
I hit dead end - this is driving me crazy, especially it is really urgent matter.

Answer 1

Mystery solved:
it appears that all I had to do was to set Content-Type for xml - which I wasn't doing. Solution found here
Here you go:
[request setValue:#"application/xml; charset=utf-8" forHTTPHeaderField:#"Content-Type"];

Answer 2

In my case, I had to use setValue:#"text/xml" to get the desired JSON response from the server (PHP server).
i.e. I used the following:
[request addValue:#"text/xml" forHTTPHeaderField:#"Content-Type"];