/// <summary>
/// Asynchronously deserializes the given <paramref name="input"/> stream to an <see cref="AS4Message"/> model.
/// </summary>
/// <param name="input">The source stream from where the message should be read.</param>
/// <param name="contentType">The content type required to correctly deserialize the message into different MIME parts.</param>
/// <param name="cancellation">The token to control the cancellation of the deserialization.</param>
public async Task <AS4Message> DeserializeAsync(
Stream input,
string contentType,
CancellationToken cancellation = default(CancellationToken))
{
if (input == null)
{
throw new ArgumentNullException(nameof(input));
}
if (contentType == null)
{
throw new ArgumentNullException(nameof(contentType));
}
var envelopeDocument = new XmlDocument {
PreserveWhitespace = true
};
envelopeDocument.Load(input);
// Sometimes throws 'The 'http://www.w3.org/XML/1998/namespace:lang' attribute is not declared.'
// ValidateEnvelopeDocument(envelopeDocument);
XmlNamespaceManager nsMgr = GetNamespaceManagerForDocument(envelopeDocument);
SecurityHeader securityHeader = DeserializeSecurityHeader(envelopeDocument, nsMgr);
Messaging messagingHeader = DeserializeMessagingHeader(envelopeDocument, nsMgr);
Body1 body = DeserializeBody(envelopeDocument, nsMgr);
if (messagingHeader == null)
{
throw new InvalidMessageException("The envelopeStream does not contain a Messaging element");
}
AS4Message as4Message =
await AS4Message.CreateAsync(
envelopeDocument,
contentType,
securityHeader,
messagingHeader,
body);
StreamUtilities.MovePositionToStreamStart(input);
return(as4Message);
}
