message: Add INET support for linux (not just INET6)
diff: @@ -157,16 +157,26 @@ oatpp::v_io_handle SimpleTCPConnectionProvider::instantiateServer(){
  v_int32 ret;
  int yes = 1;
  - struct sockaddr_in6 addr;
  + struct addrinfo *result = NULL;
  + struct addrinfo hints;
  - addr.sin6_family = AF_INET6;
  - addr.sin6_port = htons(m_port);
  - addr.sin6_addr = in6addr_any;
  + memset(&hints, 0, sizeof(hints));
  + hints.ai_family = AF_INET6;
  + hints.ai_socktype = SOCK_STREAM;
  + hints.ai_protocol = 0;
  + hints.ai_flags = AI_PASSIVE;
  + auto portStr = oatpp::utils::conversion::int32ToStr(m_port);
  - serverHandle = socket(AF_INET6, SOCK_STREAM, 0);
  + ret = getaddrinfo(NULL, (const char *) portStr->getData(), &hints, &result);
  + if (ret != 0) {
  + OATPP_LOGE("[oatpp::network::server::SimpleTCPConnectionProvider::instantiateServer()]", "Error. Call to getaddrinfo() failed with result=%d", ret);
  + throw std::runtime_error("[oatpp::network::server::SimpleTCPConnectionProvider::instantiateServer()]: Error. Call to getaddrinfo() failed.");
  + }
  + serverHandle = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
  if (serverHandle < 0) {
  - return -1;
  + OATPP_LOGE("[oatpp::network::server::SimpleTCPConnectionProvider::instantiateServer()]", "Error. Couldn't open a socket");
  + throw std::runtime_error("[oatpp::network::server::SimpleTCPConnectionProvider::instantiateServer()]: Error. Couldn't open a socket");
  }
  ret = setsockopt(serverHandle, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int));
  @@ -174,7 +184,7 @@ oatpp::v_io_handle SimpleTCPConnectionProvider::instantiateServer(){
  OATPP_LOGD("[oatpp::network::server::SimpleTCPConnectionProvider::instantiateServer()]", "Warning. Failed to set %s for accepting socket", "SO_REUSEADDR");
  }
  - ret = bind(serverHandle, (struct sockaddr *)&addr, sizeof(addr));
  + ret = bind(serverHandle, result->ai_addr, (int) result->ai_addrlen);
  if(ret != 0) {
  ::close(serverHandle);
  