private SessionMessageBase DeserializeMessage(SessionFragmentMessage fragment)
{
var type = SessionMessageTypeAttribute.GetTypeForMessageType(fragment.Header.SessionMessageType);
if (type == null)
{
logger.LogTrace("Incoming decrypted has no impl: " +
JsonConvert.SerializeObject(fragment, Formatting.Indented));
}
var message = CreateFromMessageType(fragment.Header.SessionMessageType);
if (fragment.Header.IsFragment)
{
message = new FragmentMessage();
}
logger.LogTrace($"Received {message.GetType().Name} message");
message.Header.ChannelId = fragment.Header.ChannelId;
message.Header.RequestAcknowledge = fragment.Header.RequestAcknowledge;
message.Header.IsFragment = fragment.Header.IsFragment;
message.Header.SessionMessageType = fragment.Header.SessionMessageType;
message.Header.Version = fragment.Header.Version;
message.Deserialize(new BEReader(fragment.Fragment));
return(message);
}
public SessionMessageBase AssembleFragment(SessionMessageBase message, uint sequenceNumber)
{
FragmentMessage fragment = message as FragmentMessage;
SessionMessageType messageType = fragment.Header.SessionMessageType;
int sequenceBegin = (int)fragment.SequenceBegin;
int sequenceEnd = (int)fragment.SequenceEnd;
_fragmentQueue[(int)sequenceNumber] = fragment.Data;
IEnumerable <int> neededSequences = Enumerable.Range(sequenceBegin, sequenceEnd - sequenceBegin);
foreach (var seq in neededSequences)
{
if (!_fragmentQueue.ContainsKey(seq))
{
return(null);
}
}
EndianWriter writer = new EndianWriter();
foreach (int seq in neededSequences)
{
byte[] data = _fragmentQueue[seq];
writer.Write(data);
_fragmentQueue.Remove(seq);
}
SessionMessageBase assembled = SessionMessageTransport.CreateFromMessageType(messageType);
assembled.Deserialize(new EndianReader(writer.ToBytes()));
return(assembled);
}
void LoadFragment(int id)
{
Fragment fragment = null;
switch (id)
{
case Resource.Id.menu_home:
fragment = FragmentHome.NewInstance();
break;
case Resource.Id.menu_add_location:
fragment = FragmentAdd.NewInstance();
break;
case Resource.Id.menu_message:
fragment = FragmentMessage.NewInstance();
break;
case Resource.Id.menu_settings:
fragment = FragmentSettings.NewInstance();
break;
}
if (fragment == null)
{
return;
}
FragmentManager.BeginTransaction()
.Replace(Resource.Id.content_frame, fragment)
.Commit();
}
public SessionMessageBase AssembleFragment(SessionMessageBase message, uint sequenceNumber)
{
FragmentMessage fragment = message as FragmentMessage;
SessionMessageType messageType = fragment.Header.SessionMessageType;
int sequenceBegin = (int)fragment.SequenceBegin;
int sequenceEnd = (int)fragment.SequenceEnd;
_fragmentQueue[(int)sequenceNumber] = fragment.Data;
IEnumerable <int> neededSequences = Enumerable.Range(sequenceBegin, sequenceEnd - sequenceBegin);
BEWriter writer = new BEWriter();
foreach (int seq in neededSequences)
{
try
{
byte[] data = _fragmentQueue[seq];
writer.Write(data);
}
catch (KeyNotFoundException)
{
return(null);
}
}
// Pop obsolete fragment data
foreach (int seq in neededSequences)
{
_fragmentQueue.Remove(seq);
}
SessionMessageBase assembled = SessionMessageTransport.CreateFromMessageType(messageType);
assembled.Deserialize(new BEReader(writer.ToBytes()));
return(assembled);
}
private void SendFragments(string message)
{
int total = Mathf.CeilToInt((float)message.Length / (float)maxPacketSize);
for (int n = 0; n < total; n++)
{
int length = maxPacketSize;
int i = n * maxPacketSize;
if (length > message.Length - i)
{
length = message.Length - i;
}
var msgFragment = message.Substring(i, length);
var fragment = new FragmentMessage {
op = "fragment",
data = msgFragment,
id = fragmentId.ToString(),
num = n,
total = total
};
Send(JsonUtility.ToJson(fragment));
}
fragmentId++;
}
