Hi,
Please help me on below query:
During migration from Apache 2.0 to Apache 2.2 and compiling the
Apache 2.2.15 source code, we found following difference in the
function "ssl_io_filter_register" in the file "ssl_engine_io.c".
Apache 2.0 Source code:
void ssl_io_filter_register(apr_pool_t *p)
{
ap_register_input_filter (ssl_io_filter, ssl_io_filter_input,
NULL, AP_FTYPE_CONNECTION + 5);
ap_register_output_filter (ssl_io_filter, ssl_io_filter_output,
NULL, AP_FTYPE_CONNECTION + 5);
ap_register_input_filter (ssl_io_buffer, ssl_io_filter_buffer,
NULL, AP_FTYPE_PROTOCOL);
return;
}
Apache 2.2 Source code:
void ssl_io_filter_register(apr_pool_t *p)
{
/* This filter MUST be after the HTTP_HEADER filter, but it also must be
* a resource-level filter so it has the request_rec.
*/
ap_register_output_filter ("UPGRADE_FILTER",
ssl_io_filter_Upgrade, NULL, AP_FTYPE_PROTOCOL + 5);
ap_register_input_filter (ssl_io_filter, ssl_io_filter_input,
NULL, AP_FTYPE_CONNECTION + 5);
ap_register_output_filter (ssl_io_filter, ssl_io_filter_output,
NULL, AP_FTYPE_CONNECTION + 5);
ap_register_input_filter (ssl_io_buffer, ssl_io_filter_buffer,
NULL, AP_FTYPE_PROTOCOL);
return;
}
Could you please let me know the reason for addition of below line and
additional function "ssl_io_filter_Upgrade" in Aapche 2.2.x as against
Apache 2.0.x:
ap_register_output_filter ("UPGRADE_FILTER", ssl_io_filter_Upgrade,
NULL, AP_FTYPE_PROTOCOL + 5);
Also what exactly "ssl_io_filter_Upgrade" function do in Apache 2.2.x,
which is missing in Apache 2.0.x?
Regards,
Matty
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