socket support fix

.gitignore

@@ -53,3 +53,5 @@ examples/socket_server_2.gif
 examples/socket_server_2.dot
 examples/morse_key.wav
 examples/log_file_client.log
+examples/morse.wav
+examples/socket_client_2.dot

CHANGELOG

 TODO::
   ? DSP::Clock_ptr => migrate to std::shared_ptr
-  update Linux makefile
   !!! Add TELEsound and PiAPS_sound projects to GitLab and start addaptation to new library version
 
   unsigned long SamplingRate // -1 => 0
 LAST DONE:
 
 CHANGES:
+- ver. 0.20.004 - <b>2021.04.06</b> Changed: 
+  - Fixed makefiles for Linux - install and examples compilation works
+  - Initial work on sockets support for Linux
+
 - ver. 0.20.003 - <b>2021.04.06</b> Changed: 
   - DSP::E_LS_Mode => DSP::e::LogState
   - DSP::LogMode => DSP::e::LogMode

src/cpp/DSP_sockets.cpp

@@ -114,7 +114,7 @@ bool DSP::Socket::is_socket_error(const int &iResult) {
 
 int DSP::Socket::GetLastError() {
 #ifndef __NO_WINSOCK__
-  return WSAGetLastError());
+  return WSAGetLastError();
 #else
   return errno;
 #endif
@@ -264,7 +264,7 @@ bool DSP::Socket::TryAcceptConnection(void)
     return false;
   }
   //current_socket_state &= DSP::e::SocketStatus::timeout_mask; // no object
-  if (DSP::Socket::is_socket_valid(res) == true)
+  if (DSP::Socket::is_socket_error(res) == true)
   {
     DSP::log << "DSP::Socket::TryAcceptConnection" << DSP::e::LogMode::second << "SOCKET_ERROR" << endl;
     DSP::Socket::close_socket();

src/include/DSP_lib.h

@@ -11,7 +11,7 @@
 
 #define DSP_VER_MAJOR 0
 #define DSP_VER_MINOR 20
-#define DSP_VER_BUILD 3 // !!! without zeroes before, else this will be treated as octal number
+#define DSP_VER_BUILD 4 // !!! without zeroes before, else this will be treated as octal number
 #define DSP_VER_YEAR  2021
 #define DSP_VER       DSP_VER_MAJOR.DSP_VER_MINOR.DSP_VER_BUILD