Making a POST request through WKWebView - ios

Question

I have been on this for a week now. I am trying to make a POST request using WKWebview. This has been achieved on the android version seamlessly.
Replicating the same on iOS with SwiftUI has been a ton of complications.
I want the form to be submitted onload and redirect to the payment gate way web for authorization but it appears something is cancelling the request
I have tried to loadHTML through the webview but it did not work
public struct HTMLView: UIViewRepresentable {
var url: String
var javascriptString: String
#Binding var webViewUIModel: UIModel
public init(url: String, javascriptString: String = "", webViewUIModel: Binding<UIModel>) {
self.url = url
self.javascriptString = javascriptString
self._webViewUIModel = webViewUIModel
}
public func makeUIView(context: Context) -> WKWebView {
let webView = WKWebView()
webView.configuration.preferences.setValue(true, forKey: "allowFileAccessFromFileURLs")
webView.navigationDelegate = context.coordinator
DispatchQueue.main.async {
webView.loadHTMLString(url, baseURL: nil)
}
return webView
}
public func updateUIView(_ uiView: WKWebView, context: Context) {
DispatchQueue.main.async {
uiView.loadHTMLString(url, baseURL: nil)
}
}
public func makeCoordinator() -> WebViewCordinator {
.init(javascriptString: javascriptString) {
print("HTMLView: Start")
} didHaveError: { e in
print("HTMLView: Error")
} didFinish: {
print("HTMLView: Finish")
}
}
}
public class WebViewCordinator: NSObject, WKNavigationDelegate {
var javascriptString: String
var didStart: () -> Void
var didHaveError: (Error) -> Void
var didFinish: () -> Void
public init(javascriptString: String = "",didStart: #escaping () -> Void, didHaveError: #escaping (Error) -> Void, didFinish: #escaping () -> Void) {
self.javascriptString = javascriptString
self.didStart = didStart
self.didHaveError = didHaveError
self.didFinish = didFinish
}
public func webView(_ webView: WKWebView, didReceiveServerRedirectForProvisionalNavigation navigation: WKNavigation!) async {
print("HTMLViewREDIRECT \(await webView.url)")
}
public func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
didHaveError(error)
}
public func webView(_ webView: WKWebView, didCommit navigation: WKNavigation!) async {
print("HTMLViewCOMMIT \(await webView.url)")
}
public func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: #escaping (WKNavigationActionPolicy) -> Void) async {
print("HOST \(navigationAction.request)")
decisionHandler(.allow)
}
public func webView(_ webView: WKWebView, decidePolicyFor navigationResponse: WKNavigationResponse) async -> WKNavigationResponsePolicy {
let response = navigationResponse.response
print("HTMLViewResponse \(response)")
return .allow
}
public func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) async {
print( "HTMLViewFINISH \(await navigation)")
print( "HTMLViewFINISH \(await String(describing: webView.url))")
if !javascriptString.isEmpty {
await webView.evaluateJavaScript(javascriptString) { value, error in
print(self.javascriptString)
print(value)
print(error)
}
}
didFinish()
}
}
But I get this error 2023-02-06 16:49:22.994531+0000 TrialsProject[89459:6286324] [ServicesDaemonManager] interruptionHandler is called. -[FontServicesDaemonManager connection]_block_invoke at the end of the request.
I also tried using URLSession
var request = URLRequest(url: URL(string: url)!)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.setValue("application/json", forHTTPHeaderField: "Accept")
request.allowsCellularAccess = true
request.httpMethod = "POST"
// let params =
request.httpBody = body.data(using: .utf8)
let task = URLSession.shared.dataTask(with: request) { (data : Data?, response : URLResponse?, error : Error?) in
print("Response \(response)")
if data != nil {
if let returnString = String(data: data!, encoding: .utf8) {
print("Returned String \(returnString)")
}
}
}
task.resume()
But I get NSURLErrorDomain error code -999
What can I do to achieve a POST request with WKWebview?