path: root/t/
diff options
authorJeff King <>2018-01-25 00:58:19 (GMT)
committerJunio C Hamano <>2018-01-25 21:50:17 (GMT)
commit4414a150025765bdf83df81026270b0acbb8b376 (patch)
tree288185514098bdadadbfbc50b6713bedc705dd8f /t/
parent550fbcad1c464df9e32cab15a8c6a01f91b1629c (diff)
t/lib-git-daemon: add network-protocol helpers
All of our git-protocol tests rely on invoking the client and having it make a request of a server. That gives a nice real-world test of how the two behave together, but it doesn't leave any room for testing how a server might react to _other_ clients. Let's add a few test helper functions which can be used to manually conduct a git-protocol conversation with a remote git-daemon: 1. To connect to a remote git-daemon, we need something like "netcat". But not everybody will have netcat. And even if they do, the behavior with respect to half-duplex shutdowns is not portable (openbsd netcat has "-N", with others you must rely on "-q 1", which is racy). Here we provide a "fake_nc" that is capable of doing a client-side netcat, with sane half-duplex semantics. It relies on perl's IO::Socket::INET. That's been in the base distribution since 5.6.0, so it's probably available everywhere. But just to be on the safe side, we'll add a prereq. 2. To help tests speak and read pktline, this patch adds packetize() and depacketize() functions. I've put fake_nc() into, since that's really the only server where we'd need to use a network socket. Whereas the pktline helpers may be of more general use, so I've added them to Programs like upload-pack speak pktline, but can talk directly over stdio without a network socket. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
Diffstat (limited to 't/')
1 files changed, 24 insertions, 1 deletions
diff --git a/t/ b/t/
index 9612ccc..edbea2d 100644
--- a/t/
+++ b/t/
@@ -32,7 +32,8 @@ LIB_GIT_DAEMON_PORT=${LIB_GIT_DAEMON_PORT-${this_test#t}}
start_git_daemon() {
if test -n "$GIT_DAEMON_PID"
@@ -98,3 +99,25 @@ stop_git_daemon() {
rm -f git_daemon_output
+# A stripped-down version of a netcat client, that connects to a "host:port"
+# given in $1, sends its stdin followed by EOF, then dumps the response (until
+# EOF) to stdout.
+fake_nc() {
+ if ! test_declared_prereq FAKENC
+ then
+ echo >&4 "fake_nc: need to declare FAKENC prerequisite"
+ return 127
+ fi
+ perl -Mstrict -MIO::Socket::INET -e '
+ my $s = IO::Socket::INET->new(shift)
+ or die "unable to open socket: $!";
+ print $s <STDIN>;
+ $s->shutdown(1);
+ print <$s>;
+ ' "$@"
+test_lazy_prereq FAKENC '
+ perl -MIO::Socket::INET -e "exit 0"