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.