private int IsPartialMessage(string MID, string Length)
{
// Function to check and return if any partially received MIDs are saved
// Returns 0 if none or if current file size >= Length or an error,
// otherwise the length of data already received.
var intBytesReceived = default(int);
byte[] bytFiledata;
try
{
var dataStore = new MessageStore(DatabaseFactory.Get());
bytFiledata = dataStore.GetTemporaryInboundMessage(MID);
if (bytFiledata.Length > 0)
{
// Assume any partial will be a multiple of 250 real bytes as the last block of < 250 bytes
// would indicate a completed file...
if (bytFiledata.Length > 255)
{
intBytesReceived = bytFiledata.Length - (bytFiledata[1] + 2 + 2 * (bytFiledata.Length / 250));
if (intBytesReceived < 250 | intBytesReceived % 250 != 0)
{
// Problem with partial...
_log.Error("IsPartialMessage: Computed Bytes received is not modulo 250, Partial MID: " + MID + " Purged!");
dataStore.DeleteTemporaryInboundMessage(MID);
intBytesReceived = 0;
}
else if (intBytesReceived >= Convert.ToInt32(Length))
{
_log.Error("IsPartialMessage: Partial Length exceeded proposed length, Partial MID: " + MID + " Purged!");
dataStore.DeleteTemporaryInboundMessage(MID);
intBytesReceived = 0;
}
}
else
{
_log.Error("IsPartialMessage: Partial Files size < 255, Partial MID: " + MID + " Purged!");
dataStore.DeleteTemporaryInboundMessage(MID);
}
}
return(intBytesReceived);
}
catch (Exception e)
{
var dataStore = new MessageStore(DatabaseFactory.Get());
dataStore.DeleteTemporaryInboundMessage(MID);
_log.Error("[IsPartialMessage] " + e.Message);
return(0);
}
} // IsPartialMessage
} // WritePartialToFile
public void PurgeCurrentPartial()
{
// Called to purge the partial if the message was received completly or protocol failure
bytData = new byte[0];
try
{
var messageStore = new MessageStore(DatabaseFactory.Get());
messageStore.DeleteTemporaryInboundMessage(strMID);
}
catch
{
}
} // PurgeCurrentPartial
public void StartNewPartial(string MID)
{
strMID = MID;
bytData = new byte[0];
try
{
var messageStore = new MessageStore(DatabaseFactory.Get());
messageStore.DeleteTemporaryInboundMessage(MID);
}
catch (Exception ex)
{
_log.Error("[PartialSession.StartNewPartial] " + ex.Message);
}
} // StartNewFile
