tls_handshake
if (timeout_tls(s, tls_ctx, tls_handshake) == -1) {
} else if (timeout_tls(connfd, tls_cctx, tls_handshake) == -1) {
int tls_handshake(struct tls *_ctx);
if ((rv = tls_handshake(ctx)) != 0)
if ((rv = tls_handshake(ctx)) != 0)