githttpbackend: avoid infinite loop on generic PSGI servers

We must detect EOF when reading a POST body with standard PSGI servers.
This does not affect deployments using the standard public-inbox-httpd;
but most smaller inboxes should be able to get away using a generic
PSGI server.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/PublicInbox/GitHTTPBackend.pm b/lib/PublicInbox/GitHTTPBackend.pm
index 4d2816a0..6efe5b31 100644
--- a/lib/PublicInbox/GitHTTPBackend.pm
+++ b/lib/PublicInbox/GitHTTPBackend.pm
@@ -280,6 +280,7 @@ sub input_to_file {
                         err($env, "error reading input: $!");
                         return;
                 }
+                last if $r == 0;
                 my $off = 0;
                 while ($r > 0) {
                         my $w = syswrite($in, $buf, $r, $off);