private static void WriteSessionRecoveryFeatureRequest(TdsPackageWriter writer, SessionData reconnectData)
{
var(_, initialLength, currentLength, writeState) = SessionRecoveryFeatureRequestLengths(reconnectData);
writer.WriteByte(TdsEnums.FEATUREEXT_SRECOVERY);
if (reconnectData == null)
{
writer.WriteInt32(0);
}
else
{
writer.WriteInt32(8 + initialLength + currentLength); // length of data w/o total length (initial + current + 2 * sizeof(DWORD))
writer.WriteInt32(initialLength);
writer.WriteByteLenString(reconnectData.InitialDatabase);
writer.WriteCollation(reconnectData.InitialCollation);
writer.WriteByteLenString(reconnectData.InitialLanguage);
for (var i = 0; i < SessionData.MaxNumberOfSessionStates; i++)
{
if (reconnectData.InitialState[i] != null)
{
writer.WriteByte((byte)i);
if (reconnectData.InitialState[i].Length < 0xFF)
{
writer.WriteByte((byte)reconnectData.InitialState[i].Length);
}
else
{
writer.WriteByte(0xFF);
writer.WriteInt32(reconnectData.InitialState[i].Length);
}
writer.WriteByteArray(reconnectData.InitialState[i]);
}
}
writer.WriteInt32(currentLength);
writer.WriteByteLenString(reconnectData.Database != reconnectData.InitialDatabase ? reconnectData.Database : null);
writer.WriteCollation(SqlCollations.AreSame(reconnectData.InitialCollation, reconnectData.Collation) ? null : reconnectData.Collation);
writer.WriteByteLenString(reconnectData.Language != reconnectData.InitialLanguage ? reconnectData.Language : null);
for (var i = 0; i < SessionData.MaxNumberOfSessionStates; i++)
{
if (writeState[i])
{
writer.WriteByte((byte)i);
if (reconnectData.Delta[i].DataLength < 0xFF)
{
writer.WriteByte((byte)reconnectData.Delta[i].DataLength);
}
else
{
writer.WriteByte(0xFF);
writer.WriteInt32(reconnectData.Delta[i].DataLength);
}
writer.WriteByteArray(reconnectData.Delta[i].Data);
}
}
}
}
