core: add r->flushed flag and set it when the response is sent.

By setting EOR->r->flushed in the core output filter, allow one to determine at
log_transaction hook time whether the request has been fully flushed through
the network, or not (network issue, filter error, n-th pipelined resposne...).

Introduce the ap_bucket_eor_request() helper to get the request bound to an EOR
bucket, and uses it in ap_core_output_filter() to mark the EOR's request just
before destroying it, after all the previous buckets have been sent.

While at it, rename the request_rec* member of struct ap_bucket_eor from "data"
to "r", which makes the code clearer (not to be confused with b->data).

Finally, add CustomLog format %F, showing "F" or "-" depending on r->flushed,
for admins to figure out for each request.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1876017 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 5 insertions, 0 deletions

diff --git a/include/httpd.h b/include/httpd.h
index 88c71c0c22..c3a81ba446 100644
--- a/include/httpd.h
+++ b/include/httpd.h
@@ -1092,6 +1092,11 @@ struct request_rec {
      *  Always use ap_request_tainted() to check taint.
      */
     int taint;
+    /** Whether the response has been flushed through the network,
+     *  relevant at ap_run_log_transaction() time only.
+     *  TODO: compact elsewhere
+     */
+    unsigned int flushed:1;
 };
 
 /**