Wrong callback in Objective-C when calling SOAP service - xcode

Question

I have 2 SOAP services that I want to call from an IPad app.
One is used to Log the user in (SecurityASMX), the other is one that returns the current username (SecuredCalls) once logged in.
I can call the SecurityASMX no problem using the following code. The Async call callback is operation :
- (IBAction) OnButtonClick:(id) sender {
bindingSecurity = [[SecurityASMXSvc SecurityASMXSoapBinding] initWithAddress:#"http://myserver/Azur.IPADTest.Web.Services/public/Security.asmx"];
bindingSecurity.logXMLInOut = YES;
SecurityASMXSvc_Login *requestLogin = [[SecurityASMXSvc_Login alloc] init];
requestLogin.strUsername = #"test";
requestLogin.strPassword = #"testpass";
[bindingSecurity LoginAsyncUsingParameters:requestLogin delegate:self];
[requestLogin release];
self.label.text = #"Login in progress";
}
- (void) operation:(SecurityASMXSoapBindingOperation *)operation completedWithResponse:(SecurityASMXSoapBindingResponse *)response
{
[NSThread sleepForTimeInterval:2.0];
self.label.text = #"Login Done!";
}
This works fine.
However, in the same code file, I have a binding to my second web service to return the username with the following code. The async call callback is operationSecure :
- (IBAction) OnButtonSecureCallClick:(id) sender {
bindingSecuredCalls = [[SecureCallsSvc SecureCallsSoapBinding] initWithAddress:#"http://myserver/Azur.IPADTest.Web.Services/private/SecureCalls.asmx"];
bindingSecuredCalls.logXMLInOut = YES;
SecureCallsSvc_ReturnUserName *requestReturnUserName = [[SecureCallsSvc_ReturnUserName alloc] init];
[bindingSecuredCalls ReturnUserNameAsyncUsingParameters:requestReturnUserName delegate:self];
[requestReturnUserName release];
self.label.text = #"Get UserName In Progress";
}
- (void) operationSecure:(SecureCallsSoapBindingOperation *)operation completedWithResponse:(SecureCallsSoapBindingResponse *)response
{
[NSThread sleepForTimeInterval:2.0];
self.label.text = #"Get Username Done!";
}
The problem is that when the call to ReturnUserName returns, the method that gets called is the one for the login (operation) and not the one I want (operationSecure).
How can I tell my second webservice binding to call the second callback?
Thanks!

Answer 1

First thing would be to check if the API you're using (I assume it's a third party API) allows you to specify the callback method.
If not, you can work with the operation parameter and use isKindOfClass to see what is actually being passed.
- (void) operation:(SecurityASMXSoapBindingOperation *)operation completedWithResponse:(SecurityASMXSoapBindingResponse *)response
{
[NSThread sleepForTimeInterval:2.0];
if([operation isKindOfClass:[SecurityASMXSoapBindingOperation class]])
{
self.label.text = #"Login Done!";
}
else if([operation isKindOfClass:[SecureCallsSoapBindingOperation class]])
{
self.label.text = #"Get Username Done!";
}
}
Ideally you'd set the type of operation and response parameters to be the superclass of the respective objects returned.