public ClientConnection(string id, int baseReceiveBufferSize, Socket socket, Action <ClientConnection> onConnected)
{
this.connectionId = id;
this.baseReceiveBufferSize = baseReceiveBufferSize;
this.OnConnected = onConnected;
var endPoint = socket.LocalEndPoint;
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
var sendArgs = new SocketAsyncEventArgs();
sendArgs.AcceptSocket = socket;
sendArgs.RemoteEndPoint = endPoint;
sendArgs.Completed += new EventHandler <SocketAsyncEventArgs>(OnSend);
var receiveArgs = new SocketAsyncEventArgs();
receiveArgs.AcceptSocket = socket;
receiveArgs.RemoteEndPoint = endPoint;
receiveArgs.Completed += new EventHandler <SocketAsyncEventArgs>(OnReceived);
socketToken = new ServerSocketToken(socket, baseReceiveBufferSize, sendArgs, receiveArgs);
// handshake ready状態にセット
socketToken.socketState = SocketState.WS_HANDSHAKING;
// clientのhandshakeデータの受け取りを行う
ReadyReceivingNewData(socketToken);
}
private void ReadyReceivingNewData(ServerSocketToken token)
{
token.receiveArgs.SetBuffer(token.receiveBuffer, 0, token.receiveBuffer.Length);
if (!token.socket.ReceiveAsync(token.receiveArgs))
{
OnReceived(token.socket, token.receiveArgs);
}
}
private void ReadBuffer(ServerSocketToken token)
{
var result = ScanBuffer(wsBuffer, wsBufLength);
// read completed datas.
if (0 < result.segments.Count)
{
OnMessage(result.segments);
}
// if the last result index is matched to whole length, receive finished.
if (result.lastDataTail == wsBufLength)
{
wsBufIndex = 0;
wsBufLength = 0;
ReadyReceivingNewData(token);
return;
}
// unreadable data still exists in wsBuffer.
var unreadDataLength = wsBufLength - result.lastDataTail;
if (result.lastDataTail == 0)
{
// no data is read as WS data.
// this means the all data in wsBuffer is not enough to read as WS data yet.
// need more data to add the last of wsBuffer.
// set wsBufferIndex and wsBufLength to the end of current buffer.
wsBufIndex = unreadDataLength;
wsBufLength = unreadDataLength;
}
else
{
// not all of wsBuffer data is read as WS data.
// data which is located before alreadyReadDataTail is already read.
// move rest "unreaded" data to head of wsBuffer.
Array.Copy(wsBuffer, result.lastDataTail, wsBuffer, 0, unreadDataLength);
// then set wsBufIndex to
wsBufIndex = unreadDataLength;
wsBufLength = unreadDataLength;
}
// should read rest.
ReadyReceivingNewData(token);
}