Example Usage
This is an example of the most common use case of this SDK - fetching operations and approving them.
SDK Integration
Follow the SDK Integration tutorial for SDK installation.
Example Code
Note: The async/throws methods shown here also have callback-based counterparts (completion: @escaping (Result<…, WMTError>) -> Void) if you prefer the closure style.
// PowerAuth instance needs to be configured and a user-activated instance.
// More about PowerAuth SDK can be found here: https://github.com/wultra/powerauth-mobile-sdk
import PowerAuth2
import WultraMobileTokenSDK
func exampleUsage(powerAuth: PowerAuthSDK) {
do {
let mtoken = try powerauth.createWultraMobileToken(acceptLanguage: "de") // create the WultraMobileToken instance and set "requested content" to german language (default is english - "en")
Task {
do {
let ops = try await mtoken.operations.getOperations()
// we expect at least 1 operation in the list for the example purposes
let auth = PowerAuthAuthentication.possessionWithPassword(password: "1234") // simulate that user entered PIN 1234
try await mtoken.operations.authorize(operation: ops.first!, with: auth)
// handle successful authorization
} catch {
// operation fetch or authorization failed
}
}
} catch {
// PowerAuth baseUrl is not valid
}
}
For more examples see IntegrationTests
Request Interceptors
powerauth.createWultraMobileToken(...)/WultraMobileToken.init(...) also accept an optional requestInterceptors parameter - a list of WPNInterceptors applied, in order, to every outgoing request right before it’s sent. Use it for cross-cutting concerns such as a correlation ID:
class CorrelationIdInterceptor: WPNInterceptor {
func processRequest(_ request: NSMutableURLRequest) {
request.setValue(UUID().uuidString, forHTTPHeaderField: "X-Correlation-ID")
}
}
let mtoken = try powerauth.createWultraMobileToken(requestInterceptors: [CorrelationIdInterceptor()])
Don’t modify the X-PowerAuth-* headers or the request body in an interceptor - doing so could lead to the backend rejecting the request.