maskit commented on code in PR #9987:
URL: https://github.com/apache/trafficserver/pull/9987#discussion_r1454017382
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proxy/http2/Http2Stream.cc:
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@@ -315,19 +309,36 @@ Http2Stream::send_request(Http2ConnectionState &cstate)
}
} while (!done);
- if (bufindex == 0) {
+ if (dumpoffset == 0) {
// No data to signal read event
return;
}
// Is the _sm ready to process the header?
if (this->read_vio.nbytes > 0) {
if (this->receive_end_stream) {
- this->read_vio.nbytes = bufindex;
- this->read_vio.ndone = bufindex;
+ // This is dangerous. The _sm has possibly not read
+ // the data yet, so we end up with a mismatch if there
+ // is something async in between.
+ // Better would be to get the actual difference between
+ // the start of the headers and the actual position in
+ // the buffer for the ndone part.
+ // Howerver, during testing we have not seen any issues.
+ this->read_vio.nbytes = this->read_vio.ndone + dumpoffset;
Review Comment:
Just to confirm, does this mean `nbytes` is reset after processing the
standard headers? Are we sure the first `nbytes` is fully processed before
trailer header overwrites it?
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