public override VisualTransaction[] GetTransactions(IPSession session)
{
List <MSNSessionMessage> messages = new List <MSNSessionMessage>();
Dictionary <UInt32, MSNP2PMessage> messageFromId = new Dictionary <UInt32, MSNP2PMessage>();
foreach (TransactionNode node in session.Nodes)
{
if (node.Name.StartsWith("MSN"))
{
TransactionNode chunk = node.FindChild("MSNP2PMessageChunk");
if (chunk != null)
{
MSNP2PMessage msg;
TransactionNode headers = chunk.FindChild("Headers");
UInt32 msgID = (UInt32)headers.Fields["MessageID"];
UInt32 chunkSize = (UInt32)headers.Fields["ChunkSize"];
if (messageFromId.ContainsKey(msgID))
{
msg = messageFromId[msgID];
}
else
{
PacketDirection direction =
headers.GetSlicesForFieldPath("SessionID")[0].Packet.Direction;
UInt32 sessionID = (UInt32)headers.Fields["SessionID"];
UInt32 flags = (UInt32)headers.Fields["Flags"];
UInt64 dataOffset = (UInt64)headers.Fields["DataOffset"];
UInt64 dataSize = (UInt64)headers.Fields["DataSize"];
UInt32 ackedMsgID = (UInt32)headers.Fields["AckedMsgID"];
UInt32 prevAckedMsgID = (UInt32)headers.Fields["PrevAckedMsgID"];
UInt64 ackedDataSize = (UInt64)headers.Fields["AckedDataSize"];
msg = new MSNP2PMessage(chunk.Index, direction, chunk.StartTime,
msgID, sessionID, flags, dataOffset, dataSize, ackedMsgID,
prevAckedMsgID, ackedDataSize);
messages.Add(msg);
messageFromId[msgID] = msg;
}
int maxPreview = 4096;
if (msg.Flags == 0x20)
{
maxPreview = 131072;
}
if (chunkSize > 0 && msg.Transferred < (ulong)maxPreview)
{
TransactionNode content = chunk.FindChild("Content");
//string fieldName = (msg.SessionID != 0) ? "Raw" : "MSNSLP";
byte[] bytes = (byte[])content.Fields[content.FieldNames[0]];
int n = bytes.Length;
int max = maxPreview - (int)msg.Transferred;
if (n > max)
{
n = max;
}
msg.PreviewData.Write(bytes, 0, bytes.Length);
}
msg.EndTime = chunk.EndTime;
msg.Transferred += chunkSize;
}
else
{
TransactionNode bodyNode = node.FindChild("Payload");
if (bodyNode != null && bodyNode.Fields.ContainsKey("MSNSLP"))
{
MSNSLPMessage msg = new MSNSLPMessage(bodyNode.Index,
bodyNode.GetSlicesForFieldPath("MSNSLP")[0].Packet.Direction,
bodyNode.StartTime, (string)bodyNode["MSNSLP"]);
messages.Add(msg);
}
}
}
}
return(messages.ToArray());
}