private void BeginReadCallback(IAsyncResult result)
{
string pipeId = (string)result.AsyncState;
EventPipe pipe = _pipes[pipeId];
int readBytes = pipe.InPipe.EndRead(result);
string msg = ToString(pipe.InMsgBuf, readBytes);
if (readBytes > 0 &&
(_pipeStopMsg == null || (_pipeStopMsg != null && msg != _pipeStopMsg)))
{
try {
PipeMessage pmsg = JsonConvert.DeserializeObject <PipeMessage>(msg);
log.Debug($"Client message received, type: {pmsg.type}, msg: {pmsg.message} ");
if (OnMessage != null)
{
OnMessage(pmsg, _channelName, pipeId);
}
} catch (Exception ex)
{
log.Error($"Failed to process received message: {msg}, ex: {ex}");
}
pipe.InPipe.BeginRead(pipe.InMsgBuf, 0, BUFFER_SIZE, BeginReadCallback, pipe.Id);
}
else
{
log.Debug("Receive empty or stop message, client disconnected or broken.");
RestartConnectionWaiting(pipe.Id);
}
}
public void SendMsg(PipeMessage msg)
{
foreach (var pipeKV in _pipes)
{
EventPipe pipe = pipeKV.Value;
try {
if (pipe.OutPipe.IsConnected && pipe.OutPipe.CanWrite)
{
log.Debug($"Sending to {pipe.Id}, message: {msg}");
byte[] msgBytes = Encoding.UTF8.GetBytes(msg.ToString());
pipe.OutPipe.Write(msgBytes, 0, msgBytes.Length);
pipe.OutPipe.Flush();
}
}
catch (Exception ex)
{
log.Debug($"Write message failed. Pipe {pipe.Id} should have broken. ex: {ex}");
if (OnDisconnected != null)
{
OnDisconnected(pipe.Id);
}
RestartConnectionWaiting(pipe.Id);
}
}
}
static void CtrlMessageHandler(PipeMessage pmsg, string channelName, string pipeId)
{
VoiceCmdSetting.VoiceGrammar grammarToUpdate;
try
{
switch (pmsg.type)
{
case EVENT_TYPE_ECHO:
if (pipeMap.ContainsKey(channelName))
{
pipeMap[channelName].SendMsg(pmsg);
}
break;
case EVENT_TYPE_UPDATE_GRAMMAR:
grammarToUpdate = JsonConvert.DeserializeObject <VoiceCmdSetting.VoiceGrammar>(pmsg.message);
voiceCmdRecognizer.UpdateGrammar(channelName, grammarToUpdate);
break;
default:
log.Debug($"no matched event type {pmsg.type}, msg: {pmsg.message}");
break;
}
}
catch (Exception ex)
{
log.Error($"Failed in processing control message, msg: {pmsg.message}, ex: {ex}");
}
}
static void Main(string[] args)
{
string input = "";
byte[] bytes2send;
PipeMessage pmsg;
XmlConfigurator.Configure(new FileInfo("logging.config"));
// default config
string confFile = "VoiceCmdClientSetting.json";
try {
if (args.Length >= 2)
{
confFile = args[1];
}
// decide which configuration to use
VoiceCmdSetting vs = JsonConvert.DeserializeObject <VoiceCmdSetting>(File.ReadAllText(confFile));
StartListen(vs);
Console.WriteLine("- Recognised voice messages will be listed below.");
Console.WriteLine("- Enter anything to receive echo message.");
Console.WriteLine("- Enter 'stop' to close program.\n\n");
while (true)
{
try
{
input = Console.ReadLine();
if (input == "stop")
{
Console.WriteLine("Stopping..");
StopListen();
break;
}
pmsg = new PipeMessage(EVENT_TYPE_ECHO, input);
bytes2send = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(pmsg));
SendStream.Write(bytes2send, 0, bytes2send.Length);
pmsg = null;
bytes2send = null;
}
catch (Exception ex)
{
log.Error("Namedpipe exception: ex: " + ex);
}
}
return;
} catch (Exception ex)
{
log.Error("Failed to start test client, ex: " + ex);
Console.WriteLine("enter to close program.");
Console.ReadLine();
return;
}
}
static void MsgHandler(string msg)
{
try
{
PipeMessage pmsg = JsonConvert.DeserializeObject <PipeMessage>(msg);
//log.Debug($"Message received, type: {pmsg.type}, msg: {pmsg.message}");
Console.WriteLine($"Message received, type: {pmsg.type}, msg: {pmsg.message}");
}
catch (Exception ex)
{
log.Error("Failed to deserialize received message, ex: " + ex);
}
}
private void OutConnectionCallBack(IAsyncResult result)
{
string pipeId = (string)result.AsyncState;
EventPipe pipe = _pipes[pipeId];
try
{
if (pipe.OutPipe != null && pipe.OutPipe.CanWrite)
{
pipe.OutPipe.EndWaitForConnection(result);
if (_pipeStartMsg != null)
{
int readBytes = pipe.OutPipe.Read(pipe.OutMsgBuf, 0, BUFFER_SIZE);
string msg = ToString(pipe.OutMsgBuf, readBytes);
// Check start message
if (readBytes <= 0 || msg != _pipeStartMsg)
{
log.Error($"HandleMessage: empty content or invalid start message: " + msg);
RestartConnectionWaiting(pipe.Id);
return;
}
}
// Send ack message
log.Debug($"Pipe {pipe.Id} Connected.");
PipeMessage ackMsg = new PipeMessage("Ack", $"Command pipe Connected! Id: {pipe.Id}, PipeName: {_outPipeName}");
byte[] ackMsgBytes = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(ackMsg));
pipe.OutPipe.Write(ackMsgBytes, 0, ackMsgBytes.Length);
// Update status
pipe.Status = ConnStatus.Connected;
// Run user action
if (OnConnected != null)
{
OnConnected(pipeId);
}
}
}
catch (Exception ex)
{
log.Error("Exception while waiting for connection to OutPipe, restart waiting , ex: " + ex);
RestartConnectionWaiting(pipe.Id);
}
}
static void VoiceCmdHandler(string msg, string grammarName, float confidence)
{
log.Debug($"Voice message received: {grammarName}, {msg}, {confidence}");
// dispatch by channel
string channel = grammarName.Split('.')[0];
string grammarType = grammarName.Split('.')[1];
PipeMessage pmsg = new PipeMessage(grammarType, msg);
if (pipeMap.ContainsKey(channel))
{
pipeMap[channel].SendMsg(pmsg);
}
else
{
log.Debug($"Channel [{channel}] of recognised message doesn't exist anymore, ignore the message [{msg}]");
}
}
