httpd/async: retry reads properly when parsing headers

While git-http-backend sends headers with one write syscall,
upstream cgit still trickles them out line-by-line and we need to
account for that and retry Qspawn {parse_hdr} callbacks.

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/PublicInbox/Qspawn.pm b/lib/PublicInbox/Qspawn.pm
index f8cbffcb..7984e35a 100644
--- a/lib/PublicInbox/Qspawn.pm
+++ b/lib/PublicInbox/Qspawn.pm
@@ -134,7 +134,7 @@ sub start ($$$) {
         }
 }
 
-sub psgi_qx_init_cb {
+sub psgi_qx_init_cb { # this may be PublicInbox::HTTPD::Async {cb}
         my ($self) = @_;
         my $async = delete $self->{async}; # PublicInbox::HTTPD::Async
         my ($r, $buf);
@@ -223,7 +223,7 @@ sub rd_hdr ($) {
         $ret;
 }
 
-sub psgi_return_init_cb {
+sub psgi_return_init_cb { # this may be PublicInbox::HTTPD::Async {cb}
         my ($self) = @_;
         my $r = rd_hdr($self) or return;
         my $env = $self->{psgi_env};