On Wed, Apr 29, 2015 at 2:46 PM, Eric Covener <[email protected]> wrote:
> On Wed, Apr 29, 2015 at 8:19 AM, Yann Ylavic <[email protected]> wrote:
>> Hence how about removing this whole block (is there any module today
>> "outsmarting" httpd that cannot be considered as buggy?) or least
>> disable it for forwarded responses, eg:
>>
>> Index: modules/http/http_filters.c
>> ===================================================================
>> --- modules/http/http_filters.c (revision 1676716)
>> +++ modules/http/http_filters.c (working copy)
>> @@ -1292,6 +1292,7 @@ AP_CORE_DECLARE_NONSTD(apr_status_t) ap_http_heade
>> * The default (unset) behavior is to squelch the C-L in this case.
>> */
>> if (r->header_only
>> + && !r->proxyreq
>> && (clheader = apr_table_get(r->headers_out, "Content-Length"))
>> && !strcmp(clheader, "0")
>> && conf->http_cl_head_zero != AP_HTTP_CL_HEAD_ZERO_ENABLE) {
>
>
> Maybe we could remember here if the CL was set by
> ap_content_length_filter or someone else?
>
Yes, I first thought about this, hence checking r->clength instead,
but that would probably require to initialize it to something like
UNSET (-1), or we still could not distinguish it from a zero length
set...
That would be:
Index: modules/http/http_core.c
===================================================================
--- modules/http/http_core.c (revision 1676716)
+++ modules/http/http_core.c (working copy)
@@ -254,6 +254,9 @@ static int ap_process_http_connection(conn_rec *c)
static int http_create_request(request_rec *r)
{
+ /* Content-Length unset by default. */
+ r->clength = -1;
+
if (!r->main && !r->prev) {
ap_add_output_filter_handle(ap_byterange_filter_handle,
NULL, r, r->connection);
Index: modules/http/http_filters.c
===================================================================
--- modules/http/http_filters.c (revision 1676716)
+++ modules/http/http_filters.c (working copy)
@@ -1292,6 +1292,7 @@ AP_CORE_DECLARE_NONSTD(apr_status_t) ap_http_heade
* The default (unset) behavior is to squelch the C-L in this case.
*/
if (r->header_only
+ && (r->clength < 0)
&& (clheader = apr_table_get(r->headers_out, "Content-Length"))
&& !strcmp(clheader, "0")
&& conf->http_cl_head_zero != AP_HTTP_CL_HEAD_ZERO_ENABLE) {
--
