Use client certificate on api request usng Alamofire

NetworkManager.swift

/*
  This is a session for Alamofire where we add a certificate. This in case the client server has s self signed certficate.
	You can use this constante inside your network manager and use it as
	
		session.request(...)
					.validate()
					.response()

  NOTE: The certificate has to be encoded in a der format not in pem, because apple only supports der as noted in this stackoverflow answer https://stackoverflow.com/a/51742988
  
		HOSTNAME: is the name of the host e.g. www.google.com
		"AlamofireExtension(Bundle.main).certificates" this returns all valid certificates in the bundle
*/

private let session: Session = {
  let manager = ServerTrustManager(evaluators: [<HOSTNAME>: PinnedCertificatesTrustEvaluator(certificates: AlamofireExtension(Bundle.main).certificates, acceptSelfSignedCertificates: true, performDefaultValidation: false, validateHost: false)])
  let config = URLSessionConfiguration.default
  config.timeoutIntervalForRequest = 60
  config.timeoutIntervalForResource = 60
  config.httpMaximumConnectionsPerHost = 2
  return Session(configuration: config, serverTrustManager: manager)
}()