CODEWITHSUNDEEP
iosweb-servicessoaphttpsnsurlconnection
SKK
SKK

Reputation: 1719

IOS - calling soap webservice with transport based security (HTTPS)

I am developing an IOS application. In which I want to call a soap webservice method(transport based security (HTTPS)). I am following NSURLConnection to call the web service method. I have used the following code.

- (void)viewDidLoad
{

    //Web Service Call
    NSString *soapMessage = [NSString stringWithFormat:
                             @"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
                             "<SOAP-ENV:Envelope \n"
                             "xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" \n"
                             "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" \n"
                             "xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\" \n"
                             "SOAP-ENV:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\" \n"
                             "xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\"> \n"
                             "<SOAP-ENV:Body> \n"
                             "<Service xmlns=\"http://tempuri.org/\">"
                             "</Service> \n"
                             "</SOAP-ENV:Body> \n"
                             "</SOAP-ENV:Envelope>"];



    NSURL *url = [NSURL URLWithString:@"https://domain/Service.svc"];
    NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
    NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];
    [theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
    [theRequest addValue: @"http://tempuri.org/IService/RegisterMethod" forHTTPHeaderField:@"soapAction"];
    [theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
    [theRequest setHTTPMethod:@"POST"];
    [theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
    NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

    if(theConnection) {
        webData = [NSMutableData data] ;
    }
    else {
        NSLog(@"theConnection is NULL");
    }

    [super viewDidLoad];
    // Do any additional setup after loading the view.
}


- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace {
    return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];
}

- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
    NSArray *trustedHosts=[NSArray arrayWithObject:@"https://mydomain/"];
    if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust])
        if ([trustedHosts containsObject:challenge.protectionSpace.host])
            [challenge.sender useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];

    [challenge.sender continueWithoutCredentialForAuthenticationChallenge:challenge];
}

But I can't get the response. When I print the "webData", I am getting "<>" empty response. I am new to the IOS. Can anyone tell me, what is the problem in my code (or) I should use any other method to call soap web service with https and give me some useful links.

Edited: I have changed my code as,

NSData* bodyData = [soapMessage dataUsingEncoding:NSUTF8StringEncoding];
NSUInteger bodyDataLength = [bodyData length];
[theRequest addValue: [NSString stringWithFormat:@"%d", bodyDataLength] forHTTPHeaderField:@"Content-Length"]
[theRequest setHTTPBody: bodyData]

But still I am getting the "webData" value as empty.

Upvotes: 1

Views: 4944

Answers (1)

CouchDeveloper
CouchDeveloper

Reputation: 19106

It looks almost good ;)

You set the body data as a NSData object which you obtain by converting the soap message string into a byte sequence using the character encoding specified in the charset parameter of the Content-Type header (UTF-8).

So far so good. But, the length of the body data is the length of the NSData content (in bytes) - not the length of the NSString object in UTF-16 code units. ;)

NSData* bodyData = [soapMessage dataUsingEncoding:NSUTF8StringEncoding];
NSUInteger bodyDataLength = [bodyData length];

Set the Content-Length header accordingly.

Upvotes: 2

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