int nrtele; // number of elements in the routing table
int send_retries; // number of retries send_msg() should attempt if eagain/timeout indicated by nng
int trace_data_len; // number of bytes to allocate in header for trace data
int d1_len; // extra header data 1 length
int d2_len; // extra header data 2 length (future)
int nn_sock; // our general listen socket
int nrtele; // number of elements in the routing table
int send_retries; // number of retries send_msg() should attempt if eagain/timeout indicated by nng
int trace_data_len; // number of bytes to allocate in header for trace data
int d1_len; // extra header data 1 length
int d2_len; // extra header data 2 length (future)
int nn_sock; // our general listen socket