Before I submit this to the Apache bug database, I would like to hear
your comment about it.
[Symptom]
I used LimitRequestBody directive and then sent POST request which
size is over the value of LimitRequestBody.
I expected the response of Status 413 with the body which is set for the status.
However I got the Status 413 with the body including not only 413, but also 500.
[Analysis]
It happens when you use mod_cgid / mod_cgi and LimitRequestBody.
It might caused by the following mod_cgi's code :
--- L.836-843 in mod_cgi.c ---
rv = ap_get_brigade(r->input_filters, bb, AP_MODE_READBYTES,
APR_BLOCK_READ, HUGE_STRING_LEN);
if (rv != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
"Error reading request entity data");
return HTTP_INTERNAL_SERVER_ERROR;
}
-------------------------------------------------
Exceeding LimitRequestBody AP_FILTER_ERROR occurs in ap_get_brigade().
Apache put Status 413's body into the response at that time.
However following code returns HTTP_INTERNAL_SERVER_ERROR.
It means that Apache adds Status 500's body to the response.
I think the code might be like following :
-------------------------------------------------
rv = ap_get_brigade(r->input_filters, bb, AP_MODE_READBYTES,
APR_BLOCK_READ, HUGE_STRING_LEN);
if (rv != APR_SUCCESS) {
if (rv == AP_FILTER_ERROR)
return rv;
else
return HTTP_INTERNAL_SERVER_ERROR;
}
-------------------------------------------------
I mention only mod_cgi, but mod_cgid includes the same issue.
I appriciate your comment.
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