private void replyRequest(PackageBuffer pkgBuffer)
{
for (int i = 0; i < request_queue.Count; ++i)
{
int id = request_queue[i];
int index = -1;
for (int j = 0; j < history_queue.Count; ++j)
{
if (id < history_queue[j].id)
{
break;
}
else if (id == history_queue[j].id)
{
index = j;
break;
}
}
if (index == -1) // already expired
{
}
else
{
packMessage(history_queue[index], pkgBuffer);
}
}
request_queue.Clear();
}
private void packHeartbeat(PackageBuffer pkgBuffer)
{
if (pkgBuffer.len == PackageBuffer.PACKAGE_LEN)
{
pkg_queue.Add(pkgBuffer);
pkgBuffer = new PackageBuffer();
}
pkgBuffer.buffer[pkgBuffer.len++] = (byte)TYPE_HEARTBEAT;
}
private void sendMessages(PackageBuffer pkgBuffer)
{
for (int i = 0; i < send_queue.Count; ++i)
{
packMessage(send_queue[i], pkgBuffer);
}
history_queue.AddRange(send_queue);
send_queue.Clear();
}
private void packRequest(PackageBuffer pkgBuffer, int id)
{
if ((PackageBuffer.PACKAGE_LEN - pkgBuffer.len) < 3)
{
pkg_queue.Add(pkgBuffer);
pkgBuffer = new PackageBuffer();
}
pkgBuffer.len = fillHeader(pkgBuffer.buffer, pkgBuffer.len, TYPE_REQUEST, id);
}
private void genPackages()
{
PackageBuffer pkgBuffer = new PackageBuffer();
requestMissing(pkgBuffer);
replyRequest(pkgBuffer);
sendMessages(pkgBuffer);
if (pkgBuffer.len == 0)
{
packHeartbeat(pkgBuffer);
}
pkg_queue.Add(pkgBuffer);
}
private void packMessage(Message msg, PackageBuffer pkgBuffer)
{
int lenData = msg.data.Length;
int lenPackage = (lenData < 128) ? lenData + 3 : lenData + 4;
if ((PackageBuffer.PACKAGE_LEN - pkgBuffer.len) < lenPackage)
{
pkg_queue.Add(pkgBuffer);
pkgBuffer = new PackageBuffer();
}
pkgBuffer.len = fillHeader(pkgBuffer.buffer, pkgBuffer.len, lenData + TYPE_DATA, msg.id);
Array.Copy(msg.data, 0, pkgBuffer.buffer, pkgBuffer.len, lenData);
pkgBuffer.len += lenData;
}
private void requestMissing(PackageBuffer buffer)
{
int id = recv_id_min;
for (int i = 0; i < recv_queue.Count; ++i)
{
if (recv_queue[i].id > id)
{
for (int j = id; j < recv_queue[i].id; j++)
{
packRequest(buffer, j);
}
}
id = recv_queue[i].id + 1;
}
}