Is it necessary to create soap message when using ASIFormDataRequest/ASIHTTPRequest? - iphone

Question

I used NSURLConnection to communicate with Soap webservice and it worked fine.
Now I am using ASIFormDataRequest and I am not getting is it necessary to create soap message for that? and I am not aware what is SoapAction.
Here is the code I am using
NSURL *url = [NSURL URLWithString:#"http://SERVERNAME.com/WEBSERVICENAME"];
[self setFrmdataReq:[ASIFormDataRequest requestWithURL:url]];
[frmdataReq setRequestMethod:#"POST"];
[frmdataReq addRequestHeader:#"Content-Type" value:#"text/xml; charset=utf-8"];
[frmdataReq setPostValue:txtField.text forKey:#"city"];
[frmdataReq setDelegate:self];
[frmdataReq setDidFinishSelector:#selector(requestFinished:)];
[frmdataReq setDidFailSelector:#selector(requestFailed:)];
[frmdataReq startSynchronous];
UPDATE
Soap Message I used,
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
NSString *soapMessage = [NSString stringWithFormat:#"<?xml version=\"1.0\" encoding=\"utf-8\"?>\
<soap12:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap12=\"http://www.w3.org/2003/05/soap-envelope\">\
<soap12:Body>\
<getCityTime xmlns=\"http://www.Nanonull.com/TimeService/\">\
<city>%#</city>\
</getCityTime>\
</soap12:Body>\
</soap12:Envelope>",txtField.text];
NSString *msgLength = [NSString stringWithFormat:#"%d",[soapMessage length]];
[request addValue:#"text/xml" forHTTPHeaderField:#"Content-Type"];
[request addValue:msgLength forHTTPHeaderField:#"Content-Length"];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
if(conn)
{
responseData = [[NSMutableData data]retain];
NSLog(#"connection successful");
}
else
NSLog(#"connection fail.");
I didn't defined SOAPAction as I don't know anything about that.

Answer 1

When using ASIHTTPRequest, you need to create the SOAP request in basically the same way as you do with NSURLConnection.
The setPostValue call in ASIHTTPRequest is for create HTTP POST requests in the same format use for POST <form> tags in HTML.
For comparing ASIHTTPRequest / NSURLConnection, see things like:
ASIHTTPRequest vs NSURLConnection
and "What is ASIHTTPRequest?" on:
http://allseeing-i.com/ASIHTTPRequest/