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ngtcp2: avoid busy loop in low CWND situation

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Closes #8739
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Tatsuhiro Tsujikawa 2022-04-24 23:21:26 +02:00 • committed by Daniel Stenberg
parent b82d879817
commit 458c4b1df7
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lib/vquic/ngtcp2.c
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@ -879,6 +879,7 @@ static int ng_getsock(struct Curl_easy *data, struct connectdata *conn,
/* we're still uploading or the HTTP/2 layer wants to send data */
if((k->keepon & (KEEP_SEND|KEEP_SEND_PAUSE)) == KEEP_SEND &&
(!stream->h3out || stream->h3out->used < H3_SEND_SIZE) &&
ngtcp2_conn_get_cwnd_left(qs->qconn) &&
ngtcp2_conn_get_max_data_left(qs->qconn) &&
nghttp3_conn_is_stream_writable(qs->h3conn, stream->stream3_id))
bitmap |= GETSOCK_WRITESOCK(FIRSTSOCKET);