added check of nc implementation

gosher

@@ -51,7 +51,7 @@ NETCAT="nc"
 ##
 ## NETCAT_OPTS: any additional options to netcat
 ## 
-NETCAT_OPTS=""
+NETCAT_OPTS="-v"
 
 ##
 ## STYLE: The way in which netcat will talk to gosher_serve
@@ -94,20 +94,36 @@ if [ -z "${MYNAME#gosher}" ]; then
 		echo "Wrong NETCAT -- Exiting" >&2
 		exit 2
 	}
+	is_openbsd=$(echo "${NETCAT}" | grep -i "certfile")
 
 	if [ -f "${MYDIR}/gosher_serve" ] ||  [ -h "${MYDIR}/gosher_serve" ]; then
 		GOSHER_SERVE="${MYDIR}/gosher_serve"
 		trap cleanup 0 HUP INT TRAP TERM QUIT
 
 		INF="${IPREFIX}$$"
-		[ "$STYLE" = "pipe" ] && {
+		[ "$STYLE" = "pipe" -a -n "${is_openbsd}" ] && {
+			echo "Genuine OpenBSD nc detected" >&2
 			mkfifo -m 600 "$INF"
 # shellcheck disable=SC2050
 			while :; do
 # shellcheck disable=SC2094
 				${GOSHER_SERVE} "${GOPHERDIR}" \
 				   "${HOSTNAME}" "${PORT}" <"$INF" |\
-				    ${NETCAT} -vvvvv -l "${HOSTNAME}" "${PORT}" >"$INF"
+				    ${NETCAT} ${NETCAT_OPTS} -l "${HOSTNAME}" "${PORT}" >"$INF"
+				sleep 1
+			done
+			rm -f $INF
+			exit 0
+		}
+		[ "$STYLE" = "pipe" -a -z "${is_openbsd}" ] && {
+			echo "Other nc implementation detected" >&2
+			mkfifo -m 600 "$INF"
+# shellcheck disable=SC2050
+			while :; do
+# shellcheck disable=SC2094
+				${GOSHER_SERVE} "${GOPHERDIR}" \
+				   "${HOSTNAME}" "${PORT}" <"$INF" |\
+				    ${NETCAT} ${NETCAT_OPTS} -l -p "${PORT}" >"$INF"
 				sleep 1
 			done
 			rm -f $INF
@@ -116,7 +132,7 @@ if [ -z "${MYNAME#gosher}" ]; then
 		[ "$STYLE" = 'fork' ] && {
 # shellcheck disable=SC2050
 			while :; do
-				${NETCAT} -vv -l -p "$PORT" -c \
+				${NETCAT} ${NETCAT_OPTS} -l -p "$PORT" -c \
 				   "${GOSHER_SERVE} ${GOPHERDIR} ${HOSTNAME} ${PORT}"
 				sleep 1
 			done