public static bool TryDecodeMessage(BEncodedDictionary dictionary, out DhtMessage message, out string error)
{
message = null;
error = null;
if (!dictionary.TryGetValue(MessageTypeKey, out BEncodedValue messageType))
{
message = null;
error = "The BEncodedDictionary did not contain the 'q' key, so the message type could not be identified";
return(false);
}
if (messageType.Equals(QueryMessage.QueryType))
{
message = queryDecoders[(BEncodedString)dictionary[QueryNameKey]](dictionary);
}
else if (messageType.Equals(ErrorMessage.ErrorType))
{
message = new ErrorMessage(dictionary);
messages.Remove(message.TransactionId);
}
else
{
QueryMessage query;
BEncodedString key = (BEncodedString)dictionary[TransactionIdKey];
if (messages.TryGetValue(key, out query))
{
messages.Remove(key);
try
{
message = query.CreateResponse(dictionary);
}
catch
{
error = "Response dictionary was invalid";
}
}
else
{
error = "Response had bad transaction ID";
}
}
// If the transaction ID is null, or invalid, we should bail out
if (message != null && message.TransactionId == null)
{
error = "Response had a null transation ID";
}
// If the node ID is null, or invalid, we should bail out
if (message != null && message.Id == null)
{
error = "Response had a null node ID";
}
return(error == null && message != null);
}
public static bool TryDecodeMessage(BEncodedDictionary dictionary, out DhtMessage message)
{
string error;
return(TryDecodeMessage(dictionary, out message, out error));
}
