ZT_INVALID_SOCKET 176 src/ftmod/ftmod_zt/ftmod_zt.c static ftdm_socket_t CONTROL_FD = ZT_INVALID_SOCKET; ZT_INVALID_SOCKET 262 src/ftmod/ftmod_zt/ftmod_zt.c ftdm_socket_t sockfd = ZT_INVALID_SOCKET; ZT_INVALID_SOCKET 266 src/ftmod/ftmod_zt/ftmod_zt.c if (sockfd != ZT_INVALID_SOCKET && ftdm_span_add_channel(span, sockfd, type, &ftdmchan) == FTDM_SUCCESS) { ZT_INVALID_SOCKET 1140 src/ftmod/ftmod_zt/ftmod_zt.c ftdmchan->sockfd = ZT_INVALID_SOCKET;