soissending 254 netinet/tcp_output.c if (idle && soissending(so)) {
soissending 415 netinet/tcp_output.c len + off >= so->so_snd.sb_cc && !soissending(so))
soissending 740 netinet/tcp_output.c if (off + len == so->so_snd.sb_cc && !soissending(so))