diff --git a/qse/cmd/http/ursd.c b/qse/cmd/http/ursd.c
index 5ccdfc65..0439f547 100644
--- a/qse/cmd/http/ursd.c
+++ b/qse/cmd/http/ursd.c
@@ -183,7 +183,12 @@ static qse_sck_hnd_t open_server_socket (int proto, const qse_nwad_t* bindnwad)
 
 	skad_len = qse_nwadtoskad (bindnwad, &skad);
 	family = qse_skadfamily(&skad);
+
+#if defined(IPPROTO_SCTP)
 	type = (proto == IPPROTO_SCTP)? SOCK_SEQPACKET: SOCK_DGRAM;
+#else
+	type = SOCK_DGRAM;
+#endif
 
 	s = socket (family, type, proto);
 	if (!qse_isvalidsckhnd(s))
@@ -221,9 +226,10 @@ static qse_sck_hnd_t open_server_socket (int proto, const qse_nwad_t* bindnwad)
 	}
 
 bind_ok:
+	#if defined(IPPROTO_SCTP)
 	if (proto == IPPROTO_SCTP)
 	{
-	#if defined(SOL_SCTP)
+		#if defined(SOL_SCTP)
 		struct sctp_initmsg im;
 		struct sctp_paddrparams hb;
 
@@ -244,7 +250,7 @@ bind_ok:
 		hb.spp_pathmaxrxt = 1;
 
 		if (setsockopt (s, SOL_SCTP, SCTP_PEER_ADDR_PARAMS, &hb, QSE_SIZEOF(hb)) <= -1) goto oops;
-	#endif
+		#endif
 
 		if (listen (s, 99) <= -1)
 		{
@@ -252,6 +258,7 @@ bind_ok:
 			goto oops;
 		}
 	}
+	#endif
 
 	return s;
 
diff --git a/qse/lib/awk/mod-math.c b/qse/lib/awk/mod-math.c
index 5ea986c7..0c3de629 100644
--- a/qse/lib/awk/mod-math.c
+++ b/qse/lib/awk/mod-math.c
@@ -155,7 +155,45 @@ static qse_awk_flt_t math_round (qse_awk_t* awk, qse_awk_flt_t x)
 #elif defined(HAVE_ROUNDF)
 	return roundf (x);
 #else
-	#error ### no round function available ###
+
+	qse_flt_t f, d;
+
+	f = math_floor (awk, x);
+	d = x - f; /* get fraction */
+
+	if (d > (qse_awk_flt_t)0.5)
+	{
+		/* round up to the nearest */
+		f =  f + (qse_awk_flt_t)1.0;
+	}
+	else if (d == (qse_awk_flt_t)0.5)
+	{
+	#if 1
+		/* round half away from zero */
+		if (x >= 0)
+		{
+			f = x + (qse_awk_flt_t)0.5;
+		}
+		else
+		{
+			f = x - (qse_awk_flt_t)0.5;
+		}
+	#else
+		/* round half to even - C99's rint() does this, i guess. */
+		d = f - (qse_awk_flt_t)2.0 * math_floor(awk, f * (qse_awk_flt_t)0.5);
+		if (d == (qse_awk_flt_t)1.0) f =  f + (qse_awk_flt_t)1.0;
+	#endif
+	}
+
+	/* this implementation doesn't keep the signbit for -0.0.
+	 * The signbit() function defined in C99 may get used to
+	 * preserve the sign bit. but this is a fall-back rountine
+	 * for a system without round also defined in C99. 
+	 * don't get annoyed by the lost sign bit for the value of 0.0.
+	 */
+
+	return f;
+	
 #endif
 }
 
diff --git a/qse/lib/http/httpd-std-urs.h b/qse/lib/http/httpd-std-urs.h
index a9bdf6a2..62bfa948 100644
--- a/qse/lib/http/httpd-std-urs.h
+++ b/qse/lib/http/httpd-std-urs.h
@@ -119,7 +119,11 @@ static int urs_open (qse_httpd_t* httpd, qse_httpd_urs_t* urs)
 		httpd->opt.rcb.logact (httpd, &msg);
 	}
 
+#if defined(IPPROTO_SCTP)
 	type = (proto == IPPROTO_SCTP)? SOCK_SEQPACKET: SOCK_DGRAM;
+#else
+	type = SOCK_DGRAM;
+#endif
 	
 	urs->handle[0].i = open_udp_socket (httpd, AF_INET, type, proto);
 #if defined(AF_INET6)
diff --git a/qse/lib/http/httpd-std.c b/qse/lib/http/httpd-std.c
index b1b5ce4b..8711539d 100644
--- a/qse/lib/http/httpd-std.c
+++ b/qse/lib/http/httpd-std.c
@@ -430,8 +430,11 @@ static QSE_INLINE qse_ssize_t __send_file (
 	#endif
 	size_t xfer;
 	ssize_t ret;
+	qse_fio_hnd_t fh;
 
-	vec.sfv_fd = in_fd.i;
+	fh = qse_fio_gethandle(in_fd.ptr);
+
+	vec.sfv_fd = fh;
 	vec.sfv_flag = 0;
 	if (offset)
 	{
@@ -439,7 +442,7 @@ static QSE_INLINE qse_ssize_t __send_file (
 	}
 	else
 	{
-		vec.sfv_off = QSE_LSEEK (in_fd.i, 0, SEEK_CUR); 
+		vec.sfv_off = QSE_LSEEK (fh, 0, SEEK_CUR); 
 		if (vec.sfv_off == (off_t)-1) return (qse_ssize_t)-1;
 	}
 	vec.sfv_len = count;
@@ -739,9 +742,10 @@ static qse_sck_hnd_t open_udp_socket (qse_httpd_t* httpd, int domain, int type,
 
 	if (set_socket_nonblock (httpd, fd, 1) <= -1) goto oops;
 
+	#if defined(IPPROTO_SCTP)
 	if (proto == IPPROTO_SCTP)
 	{
-	#if defined(SOL_SCTP)
+		#if defined(SOL_SCTP)
 		struct sctp_initmsg im;
 		struct sctp_paddrparams hb;
 
@@ -758,8 +762,9 @@ static qse_sck_hnd_t open_udp_socket (qse_httpd_t* httpd, int domain, int type,
 		hb.spp_pathmaxrxt = 1;
 
 		if (setsockopt (fd, SOL_SCTP, SCTP_PEER_ADDR_PARAMS, &hb, QSE_SIZEOF(hb)) <= -1) goto oops;
-	#endif
+		#endif
 	}
+	#endif
 
 	return fd;