Enabled arcs render after adapting OpenCNCPilot code.

Started porting iosender to C++

terje/telnet.h

@@ -0,0 +1,46 @@
+#pragma once
+
+#include <thread>
+#include "comms.h"
+
+namespace iosender {
+
+class TelnetStream : public StreamComms {
+public:
+
+    TelnetStream(std::string host, DataReceivedHandler* dataHandler = nullptr, ByteReceivedHandler *byteHandler = nullptr);
+    ~TelnetStream() override;
+
+    bool IsOpen() override;
+    int OutCount() override;
+    std::string Reply() override;
+    Comms::StreamType StreamType() override;
+    bool EventMode() override;
+    void EventMode(bool mode) override;
+    void Close() override;
+    int ReadByte() override;
+    void WriteByte(uint8_t data) override;
+    void WriteBytes(uint8_t *bytes, int len) override;
+    void WriteString(std::string data) override;
+    void WriteCommand(std::string command) override;
+    std::string GetReply(std::string command) override;
+    void AwaitAck() override;
+    void AwaitAck(std::string command) override;
+    void AwaitResponse(std::string command) override;
+    void AwaitResponse() override;
+    void PurgeQueue() override;
+
+
+private:
+    volatile bool shouldQuit = false;
+    void readWorker();
+
+    std::string reply;
+    int fd;
+    bool isConnected;
+    bool eventMode = true;
+    std::thread workerThread;
+};
+
+
+}