/**
* 打开本地通信端点，用于接收远程客户连接到达
* (server end)
*/
//public RpcConnection openEndpoint(RpcEndpoint ep) {
// return null;
//}
public bool open()
{
bool succ = false;
if (_settings.threadNum > 0)
{
_dispatcher = new RpcMessageDispatcher(this, _settings.threadNum);
succ = _dispatcher.open();
}
// if acceptor has not opened, then do open.
lock (_acceptors) {
foreach (RpcConnectionAcceptor acceptor in _acceptors)
{
if (acceptor.isOpen == false)
{
if (!acceptor.open())
{
RpcCommunicator.instance()
.logger.error("open connection acctor failed! " + acceptor.ToString());
}
}
}
}
return(succ);
}
//从二进制流中反序列化出对象RpcMessage
public static RpcMessage unmarshall(Stream stream)
{
RpcMessage m = new RpcMessage();
BinaryReader reader = new BinaryReader(stream);
try {
m.type = RpcBinarySerializer.readByte(reader);
m.sequence = RpcBinarySerializer.readInt(reader);
m.calltype = RpcBinarySerializer.readByte(reader);
m.ifidx = RpcBinarySerializer.readShort(reader);
m.opidx = RpcBinarySerializer.readShort(reader);
m.errcode = RpcBinarySerializer.readInt(reader);
m.paramsize = RpcBinarySerializer.readByte(reader);
m.call_id = RpcBinarySerializer.readShort(reader);
if (m.extra.unmarshall(stream) == false)
{
return(null);
}
m.paramstream = reader.ReadBytes((int)(stream.Length - stream.Position));
}
catch (Exception e) {
RpcCommunicator.instance().logger.error(e.ToString());
m = null;
}
return(m);
}
protected bool sendBufferredMsg()
{
if (_unsent_msglist.Count == 0)
{
return(true);
}
RpcMessage m = _unsent_msglist[0];
_unsent_msglist.RemoveAt(0);
if (_sent_num == 0)
{ //第一次连接进入之后的第一个数据包需要携带令牌和设备标识码，用于接入服务器的验证
if (_token != null && !_token.Equals(""))
{
m.extra.setPropertyValue("__token__", _token);
m.extra.setPropertyValue("__device_id__", RpcCommunicator.getSystemDeviceID());
}
}
byte[] bytes = createMsgBody(m).ToArray();
_sock.BeginSend(bytes, 0, bytes.Length, SocketFlags.None, delegate(IAsyncResult ar) {
try {
RpcConnectionAsyncSocket s = (RpcConnectionAsyncSocket)ar.AsyncState;
s.sendBufferredMsg();
}
catch (Exception e) {
RpcCommunicator.instance().logger.error("BeginSend failed:" + e.ToString());
}
}, this);
_sent_num++;
return(true);
}
public void dispatchMsg(RpcMessage m)
{
RpcServantDelegate dg = null;
if ((m.calltype & RpcMessage.CALL) != 0)
{
lock (_servants) {
if (!_servants.ContainsKey(m.ifidx))
{
doError(RpcException.RPCERROR_INTERFACE_NOTFOUND, m);
return;
}
dg = _servants[m.ifidx];
}
try {
RpcMessage msgreturn = dg.invoke(m);
if (msgreturn != null)
{
m.conn.sendMessage(msgreturn);
}
}
catch (Exception e) {
RpcCommunicator.instance().logger.error(" execute servant failed:" + e.ToString());
doError(RpcException.RPCERROR_REMOTEMETHOD_EXCEPTION, m);
}
}
}
public RpcMessage(int calltype = UNDEFINED)
{
this.calltype = calltype;
if ((calltype & CALL) != 0)
{
sequence = RpcCommunicator.instance().getUniqueSequence();
}
}
protected override void run()
{
//接收数据
long recv_num = 0;
byte[] bytes = new byte[1024];
MemoryStream stream = new MemoryStream();
RpcCommunicator.instance().logger.debug("thread of connection come in..");
try {
this.onConnected();
while (true)
{
int size = _sock.Receive(bytes);
if (size > 0)
{
stream.Seek(0, SeekOrigin.End);
stream.Write(bytes, 0, size);
}
else
{
break;
}
List <MemoryStream> streamlist = new List <MemoryStream>();
stream.Seek(0, SeekOrigin.Begin);
ReturnValue rv = parsePacket(stream);
if (rv.code == ReturnValue.DATA_DIRTY)
{
this.close(); // destroy the socket , connection be lost.
RpcCommunicator.instance().logger.debug("data dirty, break out");
break;
}
BinaryReader reader = new BinaryReader(stream);
byte[] remains = reader.ReadBytes((int)(stream.Length - stream.Position));
stream = new MemoryStream();
stream.Write(remains, 0, remains.Length);
// left bytes be picked out .
foreach (RpcMessage m in rv.msglist)
{
this.onMessage(m);
}
}
}
catch (Exception e) {
RpcCommunicator.instance().logger.debug(e.ToString());
}
onDisconnected();
RpcCommunicator.instance().logger.debug("thread of connection leaving..");
}
protected virtual void doReturnMsg(RpcMessage m2)
{
RpcMessage m1 = null;
// count+=1;
m1 = RpcCommunicator.instance().dequeueMessage(m2.sequence);
if (m1 != null)
{
if (m1.async != null)
{
// it will raise exception in user callback function
try {
if (m2.errcode != RpcException.RPCERROR_SUCC)
{
// remote exception
//m1.async.ctx.exception = new RpcException(m2.errcode);
if (m1.async.promise != null)
{
RpcAsyncContext ctx = new RpcAsyncContext();
ctx.promise = m1.async.promise;
ctx.exception = new RpcException(m2.errcode);
m1.async.promise.onError(ctx);
}
else
{
m1.async.onError(m2.errcode);
}
}
else
{
m1.async.callReturn(m1, m2);
}
}
catch (Exception e) {
RpcCommunicator.instance().logger.error("User CallBack failed: m1.async.callReturn ." + e.ToString());
}
}
else
{
lock (m1){
m1.result = m2; // assing to init-caller
//m1.notify();
m1.ev.Set();
}
}
}
}
protected virtual void onMessage(RpcMessage m)
{
if (_adapter == null && _acceptor != null && _acceptor.adapter != null) // the connection from acceptor
{
_adapter = _acceptor.adapter;
}
if (_adapter != null && _adapter.dispatcher != null) //由adapter的线程执行
{
_adapter.dispatcher.dispatchMsg(m);
}
else //由全局通信器进行调度执行
{
RpcCommunicator.instance().dispatchMsg(m);
}
}
private void dataRecieve(IAsyncResult ar)
{
try {
int recv_size = _sock.EndReceive(ar);
if (recv_size > 0)
{
_stream.Seek(0, SeekOrigin.End);
_stream.Write(_bytes, 0, recv_size);
List <MemoryStream> streamlist = new List <MemoryStream>();
_stream.Seek(0, SeekOrigin.Begin);
ReturnValue rv = parsePacket(_stream);
if (rv.code == ReturnValue.DATA_DIRTY)
{
this.close(); // destroy the socket , connection be lost.
RpcCommunicator.instance().logger.debug("data dirty, break out");
onDisconnected();
return;
}
BinaryReader reader = new BinaryReader(_stream);
byte[] remains = reader.ReadBytes((int)(_stream.Length - _stream.Position));
_stream = new MemoryStream();
_stream.Write(remains, 0, remains.Length);
// left bytes be picked out .
foreach (RpcMessage m in rv.msglist)
{
this.onMessage(m);
}
_sock.BeginReceive(_bytes, 0, _bytes.Length, SocketFlags.None, dataRecieve, this);
}
else
{
// socket lost
onDisconnected();
}
}
catch (Exception e) {
RpcCommunicator.instance().logger.debug("socket connection lost:" + e.ToString());
onDisconnected();
}
}
/**
* 处理线程一次取走当前队列中所有消息，并批处理执行
*/
private void threadMessageProcess()
{
while (_running)
{
_read_ev.WaitOne();
List <RpcMessage> msglist;
lock (_messages)
{
msglist = _messages;
_messages = new List <RpcMessage>();
}
if (msglist != null)
{
foreach (RpcMessage message in msglist)
{
message.conn.dispatchMsg(message); //分派到connection对象处理
}
}
}
RpcCommunicator.instance().logger.debug(string.Format("thread of dispatcher({0}) exiting .. ", _client.getName()));
}
protected override bool connect()
{
IPAddress addr = IPAddress.Parse(_ep.host);
IPEndPoint ep = new IPEndPoint(addr, _ep.port);
_status = ConnectStatus.CONNECTING;
_sock = newSocket();
_sock.BeginConnect(ep, delegate(IAsyncResult ar) {
RpcConnectionAsyncSocket s = (RpcConnectionAsyncSocket)ar.AsyncState;
try {
s.handler.EndConnect(ar);
if (s.handler.Connected == true)
{
s.onConnected();
//s._thread = new Thread(run);
//s._thread.Start(); // launch one thread for data recieving .
}
}
catch (Exception e) {
// connect failed
//s.onDisconnected();
RpcCommunicator.instance().logger.error("connect to host failed!");
}
//connect failed, trigger event to user as Promise
if (s.handler.Connected == false)
{
foreach (RpcMessage m in _unsent_msglist)
{
RpcAsyncContext ctx = m.async.ctx;
ctx.exception = new RpcException(RpcException.RPCERROR_CONNECT_FAILED);
m.async.promise.onError(ctx);
}
_unsent_msglist.Clear();
}
s._status = ConnectStatus.STOPPED;
}, this);
return(true);
}
public virtual bool sendMessage(RpcMessage m)
{
if ((m.calltype & RpcMessage.CALL) != 0 && (m.calltype & RpcMessage.ONEWAY) == 0)
{
m.conn = this;
//请求 Communicator 进行调度
RpcCommunicator.instance().enqueueMessage(m.sequence, m);
}
bool r = false;
lock (this) {
r = sendDetail(m);
}
if (!r) //发送失败，清除队列消息
{
if ((m.calltype & RpcMessage.CALL) != 0 && (m.calltype & RpcMessage.ONEWAY) == 0)
{
RpcCommunicator.instance().dequeueMessage(m.sequence);
}
}
return(r);
}
protected void _timerCheckHealth(object source, System.Timers.ElapsedEventArgs e)
{
//RpcCommunicator.instance().logger.debug("Communicator:: health checking..");
List <RpcMessage> removeList = new List <RpcMessage>();
lock (_cachedMsgList){
long cursec = Utility.unixTimestamp(DateTime.Now);
List <int> deprecatedlist = new List <int>();
foreach (KeyValuePair <int, RpcMessage> kv in _cachedMsgList)
{
if ((cursec - kv.Value.issuetime) * 1000 > _settings.callwait)
{
deprecatedlist.Add(kv.Key);
}
}
foreach (int seq in deprecatedlist)
{
removeList.Add(_cachedMsgList[seq]);
_cachedMsgList.Remove(seq);
RpcCommunicator.instance().logger.error(String.Format("message({0}) be dropped for timeout", seq));
}
}
//
foreach (RpcMessage message in removeList)
{
if (message.async.promise == null)
{
message.async.onError(RpcException.RPCERROR_TIMEOUT);
}
else
{
RpcAsyncContext ctx = new RpcAsyncContext();
ctx.promise = message.async.promise;
ctx.exception = new RpcException(RpcException.RPCERROR_TIMEOUT);
message.async.promise.onError(ctx);
}
}
}
//BinaryReader 以 Little-Endian 格式读取此数据类型。
// Network Order is Big-Endian
public bool unmarshall(Stream d)
{
try{
BinaryReader reader = new BinaryReader(d);
int size = 0;
size = RpcBinarySerializer.readInt(reader);
string key, val;
//byte[] bytes;
//int len = 0;
for (int n = 0; n < size; n++)
{
key = RpcBinarySerializer.readString(reader);
val = RpcBinarySerializer.readString(reader);
_props.Add(key, val);
}
}catch (Exception e) {
RpcCommunicator.instance().getLogger().error(e.ToString());
return(false);
}
return(true);
}
protected virtual void doReturnMsg(RpcMessage m2)
{
RpcMessage m1 = null;
// count+=1;
m1 = RpcCommunicator.instance().dequeueMessage(m2.sequence);
if (m1 != null)
{
if (m1.async != null)
{
m1.async.callReturn(m1, m2);
}
else
{
lock (m1){
m1.result = m2; // assing to init-caller
//m1.notify();
m1.ev.Set();
}
}
}
}
protected RpcConnection(RpcAdapter adapter = null)
{
this.adapter = adapter;
RpcCommunicator.instance().registerConnection(this);
}