fixes #1007 nngcat should accept data from stdin

Allows passing a filename of `-` to the `--file` option in order to read from
stdin. Also removes the requirement for the file to be seekable - this allows
nngcat to be used as part of a shell pipeline, or with other non-seekable files

1 files changed, 44 insertions, 0 deletions

diff --git a/tools/nngcat/nngcat_stdin_pipe_test.sh b/tools/nngcat/nngcat_stdin_pipe_test.sh
new file mode 100755
index 00000000..5fec0ab7
--- /dev/null
+++ b/tools/nngcat/nngcat_stdin_pipe_test.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+
+#
+# Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
+# Copyright 2018 Capitar IT Group BV <info@capitar.com>
+# Copyright 2020 Lager Data, Inc. <support@lagerdata.com>
+#
+# This software is supplied under the terms of the MIT License, a
+# copy of which should be located in the distribution where this
+# file was obtained (LICENSE.txt).  A copy of the license may also be
+# found online at https://opensource.org/licenses/MIT.
+#
+
+NNGCAT=${NNGCAT:=$1}
+NNGCAT=${NNGCAT:-./nngcat}
+ADDR="ipc:///tmp/nngcat_stdin_pipe_test"
+OUTPUT=/tmp/nngcat_stdin_pipe_test.$$.out
+
+echo -n "Verify reading from stdin pipe: "
+
+trap "rm $OUTPUT" 0
+
+${NNGCAT} --listen ${ADDR} --count=1 --recv-timeout=3 --recv-maxsz=0 --pull0 --raw > $OUTPUT 2>/dev/null &
+bgid=$!
+
+sleep 1
+# for speed of execution, run these in the background, they should be ignored
+echo "hello world" | ${NNGCAT} --connect ${ADDR} --delay=1 --push0 --file -
+wait "$bgid" 2>/dev/null
+
+sum=$(cksum ${OUTPUT})
+sum=${sum%% *}
+
+# This matches "hello world\n" since echo adds a trailing newline
+if [[ ${sum} == 3733384285 ]]
+then
+	echo "pass"
+	exit 0
+fi
+echo "FAIL: Checksum failed (Wanted 3733384285 got ${sum})"
+echo "OUTPUT:"
+ls -la ${OUTPUT}
+
+exit 1