tcp_send_list
struct tcp_send_list* next;
struct tcp_send_list* querylist;
struct tcp_send_list* querylast;
struct tcp_send_list* answerlist;
struct tcp_send_list* answerlast;
struct tcp_send_list* s, *sn;
tcp_relay_read(int s, struct tcp_send_list** first,
struct tcp_send_list** last, struct timeval* now,
struct tcp_send_list* item;
item = (struct tcp_send_list*)malloc(sizeof(*item));
tcp_relay_write(int s, struct tcp_send_list** first,
struct tcp_send_list** last, struct timeval* now)
struct tcp_send_list* p;