Perl: avoid returning 500 if header was already sent.

Returning NGX_HTTP_INTERNAL_SERVER_ERROR if a perl code died after
sending header will lead to a "header already sent" alert.  To avoid
it, we now check if header was already sent, and return NGX_ERROR
instead if it was.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/http/modules/perl/ngx_http_perl_module.h b/src/http/modules/perl/ngx_http_perl_module.h
index b67ce137c..da3a16235 100644
--- a/src/http/modules/perl/ngx_http_perl_module.h
+++ b/src/http/modules/perl/ngx_http_perl_module.h
@@ -34,6 +34,7 @@ typedef struct {
     unsigned                  done:1;
     unsigned                  error:1;
     unsigned                  variable:1;
+    unsigned                  header_sent:1;
 
     ngx_array_t              *variables;  /* array of ngx_http_perl_var_t */