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[core] h2: avoid sending tiny DATA frames 

h2: avoid sending tiny DATA frames when h2 window is tiny
and a larger amount of data is pending to be sent;
wait for slightly larger window to be available

note: must temporarily disable this when running h2spec since some
      h2spec tests expect 1-byte DATA frame, not a deferred response
personal/stbuehler/tests-path
Glenn Strauss 2022-06-05 21:51:15 -04:00
parent ad4a790495
commit f20061e482
1 changed files with 3 additions and 0 deletions
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src/h2.c
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@ -2624,6 +2624,9 @@ h2_send_cqdata (request_st * const r, connection * const con, chunkqueue * const
if ((int32_t)dlen > h2r->h2_swin) dlen = (uint32_t)h2r->h2_swin;
const uint32_t cqlen = (uint32_t)chunkqueue_length(cq);
if (dlen > cqlen) dlen = cqlen;
/*(note: must temporarily disable next line when running h2spec since
* some h2spec tests expect 1-byte DATA frame, not a deferred response)*/
else if (dlen < 2048 && cqlen >= 2048) return 0;
if (0 == dlen) return 0;
/* XXX: future: should have an interface which processes chunkqueue