tls_trailer_len
record_len = tls_header_len(en) + len + padding + tls_trailer_len(en);
tls_header_len(en), len, padding, tls_trailer_len(en));
tls_trailer_len(en);
outbuf_cap = tls_header_len(en) + len + tls_trailer_len(en);
outbuf_cap = tls_header_len(en) + tls_trailer_len(en);
tls_trailer_len(en);
outbuf_cap = tls_header_len(en) + len + tls_trailer_len(en);
outbuf_cap = tls_header_len(en) + len + tls_trailer_len(en);
outbuf_cap = tls_header_len(en) + len + tls_trailer_len(en);
outbuf_cap = tls_header_len(en) + len + tls_trailer_len(en);
outbuf_cap = tls_header_len(en) + len + tls_trailer_len(en);
outbuf_cap = tls_header_len(en) + len + tls_trailer_len(en);
tls_header_len(&en) + 64 + tls_trailer_len(&en) / 2);
len = tls_header_len(&en) + payload_len + tls_trailer_len(&en);
iov[1].iov_len = tls_trailer_len(&en);
payload_len = len - (tls_header_len(en) + tls_trailer_len(en));