inblock.sock = cutthrough_fd;
/* this relies on (inblock.sock == tls_out.active) */
if(!smtp_read_response(&inblock, responsebuffer, sizeof(responsebuffer), expect, CUTTHROUGH_DATA_TIMEOUT))
inblock.sock = cutthrough_fd;
/* this relies on (inblock.sock == tls_out.active) */
if(!smtp_read_response(&inblock, responsebuffer, sizeof(responsebuffer), expect, CUTTHROUGH_DATA_TIMEOUT))